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HomeMy WebLinkAboutFire & Life Safety Reportbi 3਍ഀ ENGINEERING, INC.਍ഀ 6e.dersfiq th-gfi EWme-g਍ഀ Marc E. Espinosa਍ഀ David B. Robinson, P.E.਍ഀ Richard D. Matthias, P.E.਍ഀ REVIEW BY਍ഀ U 2006਍ഀ COLORADO IN SON਍ഀ AGENCY਍ഀ --jE OCK,.Cj(-102਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ FIRE & LIFE SAFETY REPORT and਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ Prepared For:਍ഀ 42140 ARCHITECTURE਍ഀ 1621 Eighteenth Street, Suite 200਍ഀ Denver, Colorado 80202਍ഀ Attn:਍ഀ Phone:਍ഀ Facsimile:਍ഀ Presented To:਍ഀ Randy Hart਍ഀ 303.292.3388਍ഀ 303.292.3133਍ഀ Town of Vail (TOV)਍ഀ Building Department਍ഀ Attn: Charlie Davis, Chief Building Official਍ഀ Vail Fire and Emergency Services਍ഀ Attn: Mike McGee, Fire Marshal਍ഀ BCER Engineering, Inc.਍ഀ Project No. 44606002਍ഀ Modified May 23, 2006਍ഀ April 3, 2006਍ഀ May 23, 2006਍ഀ Page I਍ഀ INTRODUCTION਍ഀ This document supercedes all previously submitted fire protection and life safety documents਍ഀ related to the Vail Front Door Project. Previous documents produced by Rolf Jensen and਍ഀ Associates, Inc. (RJA) will not be in effect. Effective March 11, 2006 BCER Engineering, Inc.਍ഀ (BCER) will be the fire protection and life safety consulting engineers of record for the project.਍ഀ This document describes, in conceptual terms, the fire protection features of The Vail Front Door਍ഀ project in Vail, Colorado. This Life Safety Report and Administrative Modification is intended to਍ഀ address the residential portions of the project of the building known as Building E and should਍ഀ reference as a companion document the Vail Front Door Building A, B, C and D Life Safety਍ഀ Report.਍ഀ This package intends to describe, in performance-based language, the overall approach to active਍ഀ and passive fire protection features in the facility, whether required by Code, the Authority਍ഀ Having Jurisdictions, or as a result of an Owner request. It also describes the interaction of these਍ഀ systems in providing an overall coordinated fire protection package.਍ഀ This document is intended to be the request for administrative modification describing a code਍ഀ equivalency gpproach for the Vail Front Door Residences or Chalet project in Vail, Colorado.਍ഀ Based on numerous meetings between the design team and TOV Building and Fire Department਍ഀ and the similar nature of this project to the Gore Creek Residential Project, the design team is਍ഀ utilizing an identical approach to the Gore Creek design. This request for administrative਍ഀ modification is documentation of the design methodology used for the Vail Front Door਍ഀ Residences Project.਍ഀ The application of this administrative modification will provide an equivalent level of life-safety਍ഀ to Section 503.1.1, Exception 2 of the 2003 International Fire Code (IFC) design requirements਍ഀ for fire apparatus access road requirements. The application of this administrative modification਍ഀ will also provide an equivalent level of life-safety to Section 508.2 of the 2003 International਍ഀ Building Code (IBC) design requirements for mixed use of enclosed parking garage (Group S-2)਍ഀ below and individual residential structure above.਍ഀ The enclosed parking garage (Group S-2) is referenced as the "residential parking structure" in਍ഀ the project design documents and for consistency is referenced as the residential parking structure਍ഀ throughout the remainder of this request.਍ഀ This request presents a code methodology based on the design issues identified in these਍ഀ discussions, which are:਍ഀ 1. Establishing an alternative means of fire protection to relieve the requirements of਍ഀ constructing fire apparatus access roads and access features according to Section 503 of਍ഀ the 2003 IFC, and਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 2਍ഀ 2. Establishing a level of understanding and equivalency of the Group R residential units਍ഀ attached to the Group S-2 Parking Garage with the Group R (Residential Occupancy)਍ഀ above in accordance with Section 508.2 of the 2003 IBC, and਍ഀ 3. Establishing a level of understanding and equivalency of the construction features of the਍ഀ separation between the Group S-2 subterranean Parking Garage and each of the Group R਍ഀ dwelling structures, separation between each of the dwelling structures, as well as਍ഀ separation between each of the Group R-3 individual units within the dwelling structure਍ഀ (party wall).਍ഀ This is a request for an administrative modification. It is intended to document the approach for਍ഀ fire protection and life safety and recommend specific provisions for the Vail Front Door Chalet਍ഀ Residences project.਍ഀ The 2003 International Building Code (IBC) permits this submittal and documentation process਍ഀ for the approval of alternate materials, design and methods of construction under Sections 104.10਍ഀ and 104.11. The 2003 International Fire Code (IFC) permits this submittal and documentation਍ഀ process for the approval of alternate materials, design and methods of construction under਍ഀ Sections 104.8 and 104.9. These sections permit Building and Fire Officials to grant਍ഀ modifications for individual cases with special provisions. This administrative modification਍ഀ process allows officials to provide guidance when determining that the strict letter of the code is਍ഀ not practical and when the modification is in conformance with the intent and purpose of the਍ഀ Code. Such modification must be a reasonable approach to complying with the current Code and਍ഀ not lessen the level of fire protection, the life safety of the occupants or impact the structural਍ഀ integrity of the building. The detail of any such action granting modification by this਍ഀ administrative modification process shall be recorded and entered into the files of the code਍ഀ enforcement agencies and considered to be the code for the design and construction of the਍ഀ project.਍ഀ BUILDING DESCRIPTION਍ഀ See The Life Safety Report for the Vail Front Door - Commercial Portion of the project dated਍ഀ April 3, 2006 for details related to the buildings and parking structures adjacent to the Chalet਍ഀ Residential Project.਍ഀ Chalets਍ഀ The Chalets consist of five duplex residential structures and one triplex residential structure (total਍ഀ of 13 dwelling units resembling detached single family residences) residing above a subterranean਍ഀ parking garage for private vehicles. The residential structures are identified from north to south਍ഀ as Building 1 and 2 on the west end, Building 3 and 4 in the center, and Building 5 (triplex) and਍ഀ 6, which actually are situated next to each other with 5 being west of 6. Portions of building 5 are਍ഀ above portions of the Building 6 private parking garage. Building 6 does not have access to the਍ഀ subterranean private residential parking garage. A corner of Building 5 and a portion of Building਍ഀ 6 reside above the Tunnel of the new Building A Parking Garage and Loading Dock. In total, the਍ഀ subterranean private residential parking garage and the residential structures are approximately਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 3਍ഀ 75,700 ft2 in area. The residential structures are considered R or simply a residential occupancy਍ഀ classification with the subterranean private residential parking garage considered a S-2਍ഀ occupancy classification.਍ഀ The private residential parking garage and the private garage for Building 6 are accessed from਍ഀ Vail Road via a road residing above the Tunnel of the new Building A Parking Garage and਍ഀ Loading Dock, leading to a roundabout in front of the new Building C Ski Club. Beyond the਍ഀ roundabout, another road provides access to the existing One Vail Place parking garage.਍ഀ All but two residential structures will be four-levels with three stories above grade. One਍ഀ residential unit within Building 5 and one residential unit within Building 6 will have only three਍ഀ levels. The lowest levels are all at different elevations. Buildings 2 and 4 are directly above the਍ഀ residential parking garage, Buildings 1, 3, and 5 have portions above and adjacent to the਍ഀ residential parking garage, and Building 6 is satellite from the residential parking garage. The਍ഀ private residential parking garage has a second level mechanical equipment room serving the਍ഀ residential structures with utilities metered separately.਍ഀ Each of the residential units will be equipped with an elevator. Buildings 2 and 4 are accessed਍ഀ from the private residential parking garage via elevator, while Buildings 1, 3 and 5 are accessed਍ഀ directly without use of an elevator. Building 6 has its own private garage. As each of the਍ഀ residential structures lowest levels begin at different elevations, the height of each elevator shaft਍ഀ varies to accommodate the elevation of the floors each shaft serves. Due to the varying elevations਍ഀ of each residential structure, some Buildings actually have structural void spaces. These void਍ഀ spaces are to be protected by utilizing either automatic sprinklers in concealed spaces or਍ഀ compliance with one of the fifteen methods of constructing concealed spaces to not require਍ഀ sprinkler protection described in section 8.14.1.2 of NFPA 13. (See G021).਍ഀ The private residential parking garage and the separate residential structures above will be਍ഀ constructed under the provisions of the 2003 editions of the International Codes and the Town of਍ഀ Vail Amendments. The facility will not be treated as one overall building in regards to਍ഀ construction type and allowable areas, as separation by fire resistive walls. Each building are਍ഀ may have non-separated uses as allowed b code.਍ഀ The private residential parking garage is occupied with parking of private motorized vehicles and਍ഀ incidental use areas such as a trash room, mechanical and electrical rooms, storage rooms, and਍ഀ Fire Command room for the Chalets.਍ഀ The residential units are most like a single-family residential unit. Section 310 of the 2003 IBC਍ഀ defines the various residential occupancies as follows:਍ഀ ➢ R-1 is reserved for residential occupancies where occupants are transient in nature; The਍ഀ Vail Front Door Residential Chalets are not this type of occupancy਍ഀ ➢ R-2 is reserved for residential occupancies containing more than two dwelling units਍ഀ where the occupants are permanent in nature; The Vail Front Door Residential Chalets਍ഀ are a series of dui)lexes separated by a two-hour fire resistive walls with one unit being a਍ഀ ADMINISTRATIVE MODIFICATION May 23, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page 4਍ഀ triplex residential unit.਍ഀ ➢ R-3 is reserved for residential occupancies where the occupants are permanent in nature਍ഀ and not classified as R-1, R-2, R-4 or I, and where buildings do not contain more than਍ഀ two dwelling units. The Vail Front Door Residential Chalets are a series of duplexes਍ഀ separated by a two-hour fire resistive wall with one unit being a triplex residential unit.਍ഀ ➢ R-4 is reserved for residential occupancies arranged as residential care/assisted living਍ഀ facilities. The Vail Front Door Residential Chalets are not this type of occupancy.਍ഀ Section 310.2 of the 2003 IBC defines residential or dwelling unit as a single unit providing਍ഀ complete, independent living facilities for one or more persons, including permanent provisions਍ഀ for living, sleeping, eating, cooking, and sanitation. The residential or dwelling structures਍ഀ "closely resemble" five, stand-alone duplex (two-family) and one triplex residential buildings.਍ഀ Due to the resemblance to stand-alone duplex residential buildings and the definitions of R਍ഀ occupancies as well as a dwelling unit, the design team recommends classification of each of the਍ഀ individual residential or dwelling structures as a residential occupancy that most closely਍ഀ resembles a Group R-3 Occupancy.਍ഀ Fire Department access to the south side of the Chalets is limited. Fire Protection features have਍ഀ been designed to supplement Fire Department response to this area. This includes the installation਍ഀ of exterior standpipe hose valves that are connected to the building standpipe system. The਍ഀ locations of these valves are located on the fire protection site plan and have been approved by਍ഀ the TOV fire department.਍ഀ The building as a whole will be constructed under the provisions of the 2003 editions of the਍ഀ International Codes and the Town of Vail Amendments. The building is divided into several਍ഀ buildings and separated by a series of 3-hour firewalls with the Chalets being divided into਍ഀ separate buildings and fire areas through the use of 2-hour fire resistive walls between units.਍ഀ OVERVIEW OF FIRE PROTECTION FEATURES਍ഀ The proposed fire protection and life-safety systems for the Vail Front Door Chalet Residence਍ഀ buildings include the following features:਍ഀ Hydraulically designed and supervised automatic sprinkler system throughout the਍ഀ residential and private parking garage portions of the building, installed in accordance਍ഀ with NFPA 13, 2002 Edition. The water supply to each separate residence will come from਍ഀ a bulk water main in the parking garage and be controlled by a main supervised control਍ഀ valve with main flow switch near the water entry. A supervised control valve with਍ഀ addressable flow switch downstream will also control each residential unit.਍ഀ The residential automatic sprinkler systems will be installed throughout the residential਍ഀ building in accordance with NFPA 13, 2002 Edition, utilizing either automatic sprinklers਍ഀ in concealed spaces or compliance with one of the fifteen methods of constructing਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 5਍ഀ concealed spaces to not require sprinkler protection described in section 8.14.1.2 of਍ഀ NFPA 13.਍ഀ The residences private parking structure automatic sprinkler protection will be installed਍ഀ throughout utilizing a single separate zone from the bulk water main in the parking਍ഀ garage and be controlled by a supervised control valve with addressable flow switch.਍ഀ 2. A separate Class I, manual dry standpipe/hydrant system that is interconnected to the਍ഀ water supply entry via a normally-closed, supervised, control valve, will also be provided਍ഀ with hose connections throughout. The standpipe system will feature a hose valve with਍ഀ two 2-t/2 inch valve with 1-'/2 inch reducers at each valve. The standpipe system will be਍ഀ designed in accordance with NFPA 14, 2003 Edition and local requirements.਍ഀ A fully addressable and analog fire alarm system throughout the residential and private਍ഀ parking garage portions of the building to notify the building occupants and the fire alarm਍ഀ monitoring agency of emergency will also be provided. The fire alarm system design will਍ഀ be in accordance with NFPA 72, 2002 Edition and local TOV draft amendments to the਍ഀ 2003 IBC and 2003 IFC.਍ഀ CODE METHODOLOGY਍ഀ In order for the Vail Front Door Residences project to function with the purpose of the overall਍ഀ building design, an equivalent approach was developed to meet the intent and levels of life-safety਍ഀ required in the 2003 International Building, Fire and Residential Codes.਍ഀ The design team has utilized a systems approach and performance-based methodology for code਍ഀ compliance compared to the single-code traditional prescriptive method.਍ഀ FIRE APPARATUS ACCESS ROAD DESIGN਍ഀ Applicable Codes਍ഀ The design requirements for fire apparatus access roads come from the 2003 IFC Sections 503.਍ഀ 2003 IFC Design Requirements਍ഀ Section 503. 1.1 requires fire apparatus access roads be constructed for every building, such that਍ഀ all portions of the exterior walls of the building are within 150 feet of the fire apparatus access਍ഀ roads as measured by an approved route around the exterior of the building. Due to adjoining਍ഀ topography and non-negotiable grades surrounding the project site, constructing code compliant਍ഀ fire apparatus access roads is not feasible.਍ഀ Exception 2 of Section 503. 1.1 allows the fire code official to increase the maximum 150-foot਍ഀ dimension when the fire apparatus access roads cannot be installed because of location on਍ഀ property, topography, waterways, non-negotiable grades or similar conditions, and an approved਍ഀ alternate means of fire protection is provided.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 6਍ഀ Recommendation਍ഀ The Vail Front Door Chalet Residences site will not meet the requirements of Section 503 of the਍ഀ 2003 IFC due to topography, proximity and non-negotiable grades. The project must proceed਍ഀ with additional fire protection features above what is prescriptively required in the code. The਍ഀ additional fire protection features identified in this report are intended to establish an equivalent਍ഀ level of fire- and life-safety afforded for complying with the maximum 150-foot dimension of਍ഀ fire apparatus access roads.਍ഀ FIRE SPRINKLER SYSTEM DESIGN਍ഀ Applicable Codes਍ഀ Section 903.2.7 of the 2003 IBC and the same section in the 2003 IFC require all buildings with਍ഀ Group R occupancies to have a fire sprinkler system throughout the building. Section 903.2.9 of਍ഀ the 2003 IBC also requires fire sprinkler systems for Group S-2 enclosed parking garages, and਍ഀ enclosed parking garages when located beneath other occupancy Groups. The private parking਍ഀ garage portion of the building would be required to have a NFPA 13 fire sprinkler system.਍ഀ Section 903.3.1.2 of the 2003 IBC and the same section of the 2003 IFC allow the Group਍ഀ residential portion of the building to have a NFPA 13R fire sprinkler system.਍ഀ NFPA 13 and 13R Fire Sprinkler Design Requirements਍ഀ With a few exceptions, a NFPA 13 fire sprinkler system requires coverage for all habitable areas਍ഀ of a building, as well as, combustible concealed spaces. A NFPA 13R fire sprinkler system਍ഀ allows for the omission of fire sprinkler coverage in small areas within a building and also omits਍ഀ sprinkler coverage within combustible concealed spaces. A NFPA 13R fire sprinkler system is਍ഀ also hydraulically designed for life safety preservation and minimal property preservation. Since਍ഀ the NFPA 13 standard requires greater coverage and hydraulic design criteria, it can be viewed as਍ഀ a design standard that provides a greater level of fire- and life-safety as well as property਍ഀ preservation than the NFPA 13R design standard.਍ഀ The current design intends to provide a compliant NFPA 13 fire sprinkler system throughout the਍ഀ Group R-3 dwelling units to provide a greater level of fire- and life-safety than is required by the਍ഀ 2003 IBC and 2003 IFC (for NFPA 13 R systems).਍ഀ Recommendation਍ഀ As an equivalency component for compliance with Section 503 of the 2003 IFC fire apparatus਍ഀ access roads, it is recommended by the design team that the Town of Vail Building and Fire਍ഀ Officials accept the installation of a NFPA 13 fire sprinkler system throughout the Group R-3਍ഀ dwelling occupancies and an exterior manual dry standpipe system at grade. These standpipes਍ഀ will be located as currently approved at grade of the Chalets. The sprinkler and exterior standpipe਍ഀ system is being provided as an additional level of fire and life-safety to help establish an਍ഀ acceptable level of equivalency for a complying fire apparatus access.਍ഀ Concealed spaces (attic, crawl space, and interstitial spaces) within the residential portions of the਍ഀ building are to be sprinklered or comply with concealed spaces not requiring sprinkler protection਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 7਍ഀ in NFPA 13 (Section 8.14.1.2). Individual supervised control valves would be installed at the਍ഀ ceiling level, but accessible, in the tunnel to isolate the NFPA 13 fire sprinkler system of each਍ഀ individual Group R-3 dwelling unit. Each water supply to the dwelling units would attach to a਍ഀ bulk sprinkler system main that would attach to a riser in the water entry room near the Fire਍ഀ Command room with the main fire sprinkler and standpipe system control valves.਍ഀ FIRE ALARM SYSTEM DESIGN਍ഀ Applicable Codes਍ഀ Section 907.2 of the 2003 IBC and the same section in the 2003 IFC require approved manual,਍ഀ automatic, or manual and automatic fire alarm systems be provided in new buildings and਍ഀ structures in accordance with Sections 907.2.1 through 907.2.23. Where automatic sprinkler਍ഀ protection installed in accordance with Section 903.3.1.1 (NFPA 13) or 903.3.1.2 (NFPA 13R) is਍ഀ provided and connected to the building fire alarm system, automatic heat detection is not਍ഀ required. Sections 907.2.1 through 907.2.23 specify the occupancies or conditions that require਍ഀ some form of fire alarm system. Group S-2 occupancies are not included in these sections and਍ഀ therefore no form of fire alarm is required in the Group S-2 occupancy except that necessary for਍ഀ the required automatic sprinkler flow alarms and tamper switches as well as manual pulls and਍ഀ notification devices. Group R-3 occupancies are included in Section 907.2.10.1.2 of the 2003਍ഀ IBC and the same section in the 2003 IFC and require single- or multiple-station smoke alarms਍ഀ installed and maintained in Group R-3 occupancies regardless of occupant load at all of the਍ഀ following locations:਍ഀ 1. On the ceiling or wall outside of each separate sleeping area in the immediate vicinity of਍ഀ bedrooms.਍ഀ 2. In each room used for sleeping purposes.਍ഀ 3. In each story within a dwelling unit, including basements but not including crawl spaces਍ഀ and uninhabitable attics.਍ഀ Section 907.2 of the Town of Vail Amendments to the 2003 IFC requires every hotel, motel,਍ഀ apartment building, condominium building and commercial building with attached residential਍ഀ occupancies having 3 or more stories, or with more than 11 units, classified under the 2003 IBC਍ഀ as Group A-1, A-2, A-2.1, A-3, A-4, B-2, R-1 and R-2, to have a fire alarm system installed in਍ഀ accordance with the 2003 IBC and the 2002 NFPA 72. The amendment does not indicate that਍ഀ Section 907.2 is deleted and replaced so it is assumed that the amendment for Section 907.2 is a਍ഀ modification only. Neither the amendment for Section 907.2 nor any of the amendment Section਍ഀ 907.2 subsections identify any fire alarm requirements for S-2 or R-3 occupancies.਍ഀ Section 907.2 of the 2003 IBC and the same section in the 2003 IFC require that an approved਍ഀ automatic fire detection system be installed in accordance with the provisions of NFPA 72.਍ഀ One of the most reliable forms of fire alarm systems is one that is fully addressable and analog਍ഀ (intelligent). Section 907.2.8.3 of the Town of Vail Amendments to the 2003 IFC requires all਍ഀ Group R-1 occupancies to have smoke alarms installed that are fully addressable, analog systems.਍ഀ The amendment does not have a similar requirement for Group R-3 occupancies.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 8਍ഀ NFPA 72 Fire Alarm Design Requirements਍ഀ Single- and multiple-station alarm requirements for one- and two-family dwelling units are਍ഀ addressed in Section 11.5.1 of the 2002 NFPA 72 as follows:਍ഀ Smoke detection is required in the same locations as is required in Section 907.2.10.1.2਍ഀ of the 2003 IBC and the same section in the 2003 IFC, above. Smoke detection is਍ഀ required as follows (Section 11.5.1.1 of 2002 NFPA 72):਍ഀ a. In all sleeping rooms.਍ഀ b. Outside of each separate sleeping area, in the immediate vicinity of the sleeping਍ഀ rooms.਍ഀ c. On each level of the dwelling unit, including basements.਍ഀ 2. Notification is required as follows (Section 11.5.1.2 of 2002 NFPA 72):਍ഀ a. Fire-warning equipment for dwelling units shall provide a sound that is audible in਍ഀ all occupied dwelling areas.਍ഀ b. Where more than one smoke or heat alarm is installed for new construction, they਍ഀ shall be arranged so that the operation of any smoke or heat alarm causes the਍ഀ alarm in all smoke and heat alarms within the dwelling unit to sound.਍ഀ A fully addressable and analog fire alarm system is one where the initiating devices are਍ഀ addressable and analog. An addressable device is a fire alarm system component with discrete਍ഀ identification that can have its status (alarm status) individually identified. An analog device਍ഀ transmits a signal indicating varying degrees of condition (such as a fault, clean or dirty) as਍ഀ contrasted with a conventional initiating device, which can only indicate an on-off condition.਍ഀ Recommendation਍ഀ As an equivalency component for compliance with provisions of this request, it is recommended਍ഀ by the design team that the Town of Vail Building and Fire Officials accept the installation of a਍ഀ fully addressable and analog fire alarm system that is designed with the location and notification਍ഀ requirements of a single- and multiple- station fire alarm system for the dwelling units in the਍ഀ Group R-3 dwelling occupancies as an additional level of fire- and life- safety to help establish਍ഀ an acceptable level of equivalency. The residential parking garage (Group S-2) will also be਍ഀ provided with fully addressable and analog fire alarm with tunnel initiating and notification਍ഀ devices as described below.਍ഀ The entire building would be on a single fire alarm system with multiple zones. The residential਍ഀ parking garage would be on one zone and each of the dwelling units would be on an individual਍ഀ zone. The fire alarm control panel would be located in the Fire Command Room at the primary਍ഀ fire department access point and will report to the Vail Front Door main Fire Alarm System.਍ഀ Each dwelling unit initiating fire alarm zone would consist of a flow switch and tamper for the਍ഀ automatic sprinklers protecting the private garage and storage unit in the tunnel for that unit as਍ഀ well as all of the sprinklered portions of the dwelling unit. Each dwelling unit initiating fire਍ഀ alarm zone would also consist of heat detection devices located in the private garage and storage਍ഀ unit in the garage, smoke/heat detection devices throughout all levels of the dwelling unit. No਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 9਍ഀ manual pull devices are planned for the individual dwelling unit fire alarm zones. Dwelling unit਍ഀ smoke detection devices would be designed in accordance with the NFPA 72 requirements for਍ഀ location and notification requirements of single- and multiple- station fire alarm system for one-਍ഀ and two- family dwelling units (Section 11.5.1.1 of the 2002 NFPA 72). Only automatic਍ഀ sprinkler water flow alarms on each residential zone would transmit a general alarm to a਍ഀ supervisory station (notification to the fire department) as smoke detectors would transmit only a਍ഀ supervisory alarm to the Fire Alarm Control Panel. Residential zone automatic sprinkler water-਍ഀ flow alarms and heat detector alarms would initiate local alarm for the dwelling unit of alarm਍ഀ initiation as well as the adjacent dwelling unit.਍ഀ The residential parking garage initiating fire alarm zone will consist of the main flow switch for਍ഀ the automatic sprinkler system for the automatic sprinkler systems of the parking garage, the਍ഀ control valve tamper switches and heat detection devices (addressable and analog) in the various਍ഀ rooms within the parking garage. The residential parking garage initiating fire alarm zone would਍ഀ also consist of manual pull stations strategically located throughout the parking garage to be਍ഀ within close proximity of the personnel doors for each unit, as well as manual pull stations near਍ഀ each exit from the residential parking garage.਍ഀ The residential parking garage notification fire alarm zone will consist of horns and strobes਍ഀ located for proper coverage throughout the tunnel in accordance with NFPA 72.਍ഀ CONSTRUCTION TYPES, AREAS, HEIGHTS and SEPARATION DESIGN਍ഀ Applicable Codes਍ഀ Section 508.2 of the 2003 IBC allows Group S-2 enclosed parking garage with Group R਍ഀ occupancies above to function as separate buildings in regards to area limitations, continuity of਍ഀ firewalls, limitations of stories and type of construction. Table 704.8 has the requirements for਍ഀ un-protected openings in exterior walls. Table 602 has the requirements for the fire-resistance਍ഀ rating of exterior walls based on fire separation distance.਍ഀ BUILDING SEPARATION REQUIREMENTS਍ഀ From a code definition standpoint the Chalet Residences and private parking garage is a series of਍ഀ several single buildings. A Group S-2 below-grade, enclosed parking garage connects separate਍ഀ Residential Group R-3 building sections that contain two or three individual dwelling units each.਍ഀ Though this is a single building, the design team proposes to construct the building so it can਍ഀ function from a fire separation standpoint as a Group S-2 enclosed parking structure with਍ഀ separate Group R dwelling above it in accordance with Section 508.2 of the 2003 IBC.਍ഀ To make this acceptable the following conditions of Section 508.2 of the 2003 IBC would be਍ഀ met:਍ഀ 1. Part 1 of Section 508.2 requires the below-grade Group S-2 enclosed residential parking਍ഀ garage would be constructed with Type I-A construction. A 3-hour horizontal਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E- Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 10਍ഀ floor/ceiling assembly above the garage separating it from any portion of Group R-3਍ഀ dwelling areas above it would be provided.਍ഀ 2. Part 2 of Section 508.2 allows for 2-hour fire-resistance rated shafts/stairways to਍ഀ penetrate the 3-hour horizontal assembly. There is planned a two-hour rated elevator਍ഀ shaft enclosure from the private residential parking garage below into the separate਍ഀ residential dwelling units above. The elevator hoist-way will be separated from the਍ഀ parking garage by a one-hour elevator lobby.਍ഀ 3. The connected structure to the Group S-2 will contain only Group R occupancies in਍ഀ accordance with Part 3 of Section 508.2.਍ഀ 4. The enclosed garage level will have only parking and storage of private motorized਍ഀ vehicles as well as similar uses incidental to the operation of the building. In addition the਍ഀ enclosed garage level will be protected throughout by an approved automatic sprinkler਍ഀ system. All of this in accordance with Part 4 of Section 508.2.਍ഀ 5. Part 5 of Section 508.2 has a requirement that the maximum building height will not਍ഀ exceed the limits of Table 503. Since the building will have a fire sprinkler system,਍ഀ Section 504.2 allows for a 20-foot increase in building height increase from Table 503਍ഀ (40 feet without the increase) to a height of 60 feet. This height limitation will be met.਍ഀ The above narrative justifies application of Section 508.2 of the 2003 IBC to consider the਍ഀ subterranean Group S-2 parking garage as a separate building from the Group residential਍ഀ dwelling units above in regards to area limitations, continuity of fire walls, limitations of stories਍ഀ and type of construction.਍ഀ These separate residential dwelling areas will have portions of exterior walls that face each other.਍ഀ The separation distance between these facing exterior walls is greater than 5 feet. Per Section਍ഀ 704.5 of the 2003 IBC requires an exterior wall to be rated from the inside when the fire਍ഀ separation distance is greater than 5 feet. Given the fire separation distance between the separate਍ഀ residential structures, the fire resistance rating from the inside is being utilized. Footnote f of਍ഀ Table 704.8 allows for an unlimited amount of un-protected openings in exterior walls for Group਍ഀ R-3 occupancies with a fire separation distance greater than 5 feet. Therefore there will be no਍ഀ special protection of openings in the Residential Chalets.਍ഀ These residential dwelling units will have roof eaves that utilize wood exterior materials. This is਍ഀ not prohibited by the 2003 IBC, however, is an opportunity for improving the risk of exterior਍ഀ vertical fire spread into the attic spaces via the eave overhang by adding an additional level of਍ഀ construction fire resistance. This additional level of fire resistance could consist of a single layer਍ഀ of noncombustible construction material directly behind the exterior wood material on the਍ഀ bottom side of the roof eaves.਍ഀ Recommendation:਍ഀ To utilize Type V construction of the dwelling residential structures, it is recommended by the਍ഀ design team that the Town of Vail Building and Fire Officials accept the design of the building਍ഀ ADMINISTRATIVE MODIFICATION May 23, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page I I਍ഀ using the increased fire-resistive separation provisions of Section 508.2 of the 2003 IBC and the਍ഀ fire resistive wall separations between the residential units. The design team believes that the਍ഀ fire resistive separation between the Group S-2 parking garage and Group Residential dwelling਍ഀ units mitigates a large portion of the fire exposure potential of this large building and separates਍ഀ the private parking garage and the residential structures above. By compartmenting the building਍ഀ areas and limiting this fire exposure, the maximum fire potential of the overall building is greatly਍ഀ reduced. It is also recommended by the design team that the Town of Vail Building and Fire਍ഀ Officials accept the design of the exterior walls that face each other between the individual਍ഀ dwelling areas being one-hour walls rated from the inside only and that unprotected openings on਍ഀ these walls be unlimited in area. With the increase fire resistive separation afforded by the 2003਍ഀ IBC, Section 508.2 provision, the design team feels the one-hour fire-resistive exterior walls of਍ഀ the residential structures can be rated from the inside according to Section 704.5 and window਍ഀ opening can be un-protected according to Footnote f of Table 704.8. All exterior walls will be਍ഀ one-hour rated from the inside only which complies with the requirements for exterior bearing਍ഀ walls.਍ഀ RESIDENTIAL DWELLING UNIT SEPARATION਍ഀ (30 MINUTE FIRE RESISTIVE WALL)਍ഀ Applicable Codes: I$C. 70਍ഀ Section 503.2 of the 2003 IBC requires any wall located on a property line between adjacent਍ഀ buildings, which is used or adapted for joint service between the two buildings, be constructed as਍ഀ a fire wall in accordance with Section 705, without openings, to create separate buildings.਍ഀ Since these residential dwelling structures "closely resemble" two or three dwelling unit stand-਍ഀ alone residential buildings that are individually constructed with fire separation between਍ഀ residential units and from the Group S-2 residential parking structure, the use of the 2003਍ഀ International Residential Code (IRC) as it pertains to dwelling unit separation is recommended਍ഀ by the design team. Section R317 of the 2003 IRC describes the requirements for dwelling unit਍ഀ separation for two-family dwellings and for townhouses. This concept has been presented in਍ഀ several meetings to the Town of Vail Building and Fire Department and is consistent with the਍ഀ concept utilized at the Gore Creek Residential Project. It has never been the intent of the design਍ഀ team to utilize either the IBC or the IRC with respect to these residential units. These single਍ഀ residential dwelling units and private residential parking garage do not fit well into either the਍ഀ building or the residential code. Based on that assumption the design has proceeded with the਍ഀ administrative modification process for this unique building type.਍ഀ Section R202 of the IRC defines dwelling unit the same way that the 2003 IBC does, as a single਍ഀ unit providing complete independent living facilities for one or more persons, including਍ഀ permanent provisions for living, sleeping, eating, cooking, and sanitation.਍ഀ Section R202 of the 2003 IRC defines townhouse as a single-family dwelling unit constructed in਍ഀ a group of three or more attached units in which each unit extends from foundation to roof and਍ഀ with open space on at least two sides.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page l2਍ഀ Since these dwelling structures "closely resemble" stand-alone duplex residential buildings that਍ഀ are individually constructed with fire separation from the Group S-2 residential parking structure,਍ഀ the use of the 2003 International Residential Code (IRC) for dwelling unit separation of two-਍ഀ family dwellings (Section R317) is recommended by the design team. The design team believes਍ഀ the dwelling unit separation design requirements for townhouses is not applicable to this project.਍ഀ 2003 IRC Design Requirements਍ഀ Section R317.1 of the 2003 IRC requires dwelling units in to be separated from each other by਍ഀ wall and/or floor assemblies having not less than one-hour (t/2 -hour fire-resistance rating in਍ഀ buildings protected throughout with an automatic sprinkler system installed in accordance with਍ഀ NFPA 13). Fire-resistance-rated floor-ceiling and wall assemblies are required to extend to and਍ഀ be tight against the exterior wall. Fire- resistance-rated wall assemblies are required to extend to਍ഀ the underside of the roof sheathing. There are no additional requirements for parapets at the roof਍ഀ or protection of projections (decks, eaves or overhangs, etc.) as there are for party walls in the਍ഀ 2003 IBC or as there are for dwelling unit separation of townhouses in the 2003 IRC.਍ഀ Recommendation਍ഀ To alleviate the need for dwelling unit separation construction in accordance with Section 503.2਍ഀ of the 2003 IBC party walls and to alleviate the need for dwelling unit separation construction in਍ഀ accordance with Section 317.2 of the 2003 IRC townhouses, it is recommended that the Town of਍ഀ Vail Building and Fire Officials accept the design of the common wall between dwelling units as਍ഀ a wall exceeding the t/2 -hour (30 minute) requirements of Section R317 of the 2003 IRC for਍ഀ dwelling unit separation of two-family dwellings (Section R317.1).਍ഀ As these residential dwelling structures "closely resemble" stand-alone duplex residential਍ഀ buildings that are individually attached to the Group S-2 parking structure, the design team is਍ഀ recommending using a design for the common wall between units that is an additional level of਍ഀ fire- and life-safety to help establish an acceptable level of equivalency for the dwelling unit਍ഀ separation requirements for two-family dwellings from the 2003 IRC and to establish an਍ഀ additional level of resistance to fire spread between the dwelling units. Although only a 30-਍ഀ minute fire resistive separation is required the dwelling unit separation are required to have a਍ഀ parapet in accordance with the IBC. To meet the parapet requirement the walls separating the਍ഀ residential units will consist of the following features:਍ഀ 1. The wall between dwelling units constructed as a two-hour fire-resistance-rated wall. The਍ഀ fire wall will be constructed in accordance with Gypsum Association File No. 3820 as a਍ഀ parallel stud wall with a 3-inch gap between studs filled with an approved fire-blocking਍ഀ material.਍ഀ 2. The fire resistive wall between dwelling units will not have a parapet (vertical continuity)਍ഀ extend through the roof assembly, the wall will be tight against the exterior walls and will਍ഀ extend to the underside of the roof sheathing or be provided with fire blocking, fire਍ഀ caulking or the addition of an additional layer of 5/8-inch Type X gypsum board directly਍ഀ beneath the underside of the roof/ceiling assembly on the inside of the residential unit a਍ഀ minimum distance of 4 feet on both sides of the fire resistive wall. These methods of਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 13਍ഀ extending the fire resistive wall to the underside of roof meets the intent of the building਍ഀ and fire code and will limit and prevent the spread of fire between residential units.਍ഀ 3. There will be no additional protection features where the wall between the dwelling units਍ഀ (fire resistive wall) intersects the exterior walls and there are horizontal projecting਍ഀ elements (balconies, roof overhangs, canopies, and other architectural projections).਍ഀ ELEVATOR SHAFT PENETRATIONS and਍ഀ COMMUNICATION TO RESIDENCES ABOVE਍ഀ An elevator and elevator shaft is planned for each residential unit. Four of the thirteen elevator਍ഀ shafts communicate from the individual private residential units above to the private residential਍ഀ parking garage below. This elevator is not being provided based on any building or fire code਍ഀ requirement. The elevator shaft is located between the Group S-2 residential parking garage and਍ഀ the Group R - residential dwelling unit above. The shaft also penetrates the horizontal਍ഀ floor/ceiling assembly of the parking garage. The elevator hoist-way and opening to the elevator਍ഀ is located near the complying open stair within each of the residential units.਍ഀ Applicable Codes਍ഀ Section 508.2 of the 2003 IBC allows Group S-2 enclosed parking garages with Group R਍ഀ occupancies above to function as separate buildings in regards to area limitations, continuity of਍ഀ fire resistive assemblies, limitations of stories and type of construction.਍ഀ Condition 1 of the list of requirements to treat this building in accordance with Section 508.2਍ഀ requires a 3-hour horizontal floor/ceiling assembly above the tunnel separating it from any਍ഀ portion of Group R-3 dwelling areas above it. As requested in the Construction Types, Areas,਍ഀ Heights and Separation Design section of this document, the design team would like to construct਍ഀ a 3-hour fire-resistive separation (in accordance with Table 715.3 of the 2003 IBC) between the਍ഀ private residential parking garage (Group S-2) and the separate residential dwelling units above.਍ഀ Condition 2 permits this building in accordance with Section 508.2 to allow for 2-hour fire-਍ഀ resistance rated shafts to penetrate the 3-hour separation assembly required between the parking਍ഀ garage and dwelling units as long as the shaft has opening protectives in accordance with Table਍ഀ 715.3 of the 2003 IBC. Table 715.3 of the 2003 IBC requires a minimum 90-minute fire door on਍ഀ the elevator. The Elevator doors are not intended to be protected with an elevator lobby or a door਍ഀ providing smoke protection over the elevator door in the residential units.਍ഀ Recommendation਍ഀ To alleviate the need for providing an elevator lobby or smoke protection on the elevator door਍ഀ opening it is recommended by the design team that Town of Vail Building and Fire Officials਍ഀ accept the use of three hour fire resistive wall and doors on the elevator lobby at private਍ഀ residential parking garage level. This will prevent the transmission of hot smoke and gases from਍ഀ a fire from the parking garage. Additionally, the building is being provided with system smoke਍ഀ detectors in the residential areas and the elevator shaft serving each unit. Since the elevator shaft਍ഀ openings are located within 10 feet of the open stair in the residences there would be no fire਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 14਍ഀ protection value for creating an elevator lobby or separation of the elevator shaft from the਍ഀ residences on each residential floor. The design team believes that with the items described਍ഀ above that this to be an equivalent level of fire- and life-safety and therefore smoke protection of਍ഀ the opening into the elevator shaft would not be necessary.਍ഀ CONCLUSION਍ഀ The issue presented in this administrative modification involves the design of additional fire and਍ഀ life-safety construction features that would overcome the issues of the fire apparatus access road਍ഀ design to create an equivalent level of life-safety. Also presented in this administrative਍ഀ modification is a level of understanding and equivalency of the Group R residential units਍ഀ attached to the Group S-2 Parking Garage with the Group R above. This is achieved in਍ഀ accordance with Section 508.2 of the 2003 IBC and a level of understanding and equivalency of਍ഀ the construction features of the separation between the Group S-2 parking garage and each of the਍ഀ residential dwelling structures, separation between each of the dwelling structures, as well as਍ഀ separation between each of the residential individual units within the dwelling structure (party਍ഀ wall). The design and current permit drawings have been based on meetings related to this਍ഀ administrative modification. This request requires the acceptance of the code equivalency਍ഀ approach presented in this report. The design team requests the Town of Vail Building and Fire਍ഀ Department approval of this equivalent design.਍ഀ As summary, the design of the Chalets at Vail Front Door is based on this document as follows:਍ഀ 1. From a code definition standpoint the Vail Front Door Chalet Residences project is a਍ഀ series of separate buildings. A subterranean private parking garage connects separate਍ഀ residential building above. The building functions from a fire separation standpoint as a਍ഀ Group S-2 enclosed parking structure with Group R dwelling above it in accordance with਍ഀ Section 508.2 of the 2003 IBC.਍ഀ 2. The residential dwelling structures "closely resemble" stand-alone residential buildings਍ഀ that are individually attached to the Group S-2 parking structure. Due to the resemblance਍ഀ to stand-alone residential buildings and the definitions of R occupancies as well as਍ഀ dwelling unit, the design team recommends classification of each of the individual਍ഀ residential dwelling structures as a separate residential occupancy.਍ഀ As an equivalency to the requirements of constructing fire apparatus access roads and਍ഀ access features according to Section 503 of the 2003 IFC, the following design਍ഀ components for full equivalency are planned:਍ഀ a. Hydraulically designed and supervised automatic sprinkler system throughout the਍ഀ residential and tunnel portions of the building, installed in accordance with NFPA਍ഀ 13, 2002 Edition. Concealed spaces (attic, crawl space, and interstitial spaces)਍ഀ within the residential portions of the building are to be sprinklered or comply with਍ഀ concealed spaces not requiring sprinkler protection in NFPA 13 (Section਍ഀ 8.14.1.2).਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 15਍ഀ b. A separate Class I, manual dry standpipe/hydrant system that is interconnected to਍ഀ the other standpipe system and fire department connections.਍ഀ c. A fire alarm system throughout the three levels of residential and parking garage਍ഀ portions of the building to notify the building occupants and the fire alarm਍ഀ monitoring agency of emergency.਍ഀ d. The wall between dwelling units constructed as a two-hour fire-resistance-rated਍ഀ wall without openings in lieu of the prescriptively required 'h-hour rated wall਍ഀ required by Section 317.1 of the 2003 IRC for NFPA 13 sprinklered residential਍ഀ dwellings.਍ഀ e. The roof eaves of the residential portion of the building constructed with an਍ഀ approved single layer of noncombustible construction material directly behind the਍ഀ exterior wood material on the bottom side of the wood eaves.਍ഀ 4. Utilize Type V construction of the dwelling residential structures in accordance with the਍ഀ increased fire-resistive separation provisions of Section 508.2 of the 2003 IBC.਍ഀ The exterior walls of the residential dwelling units constructed as one-hour walls rated਍ഀ from the inside only and that unprotected openings on these walls be unlimited in area.਍ഀ This in accordance with Section 704.5 of the 2003 IBC and Footnote f of Table 704.8 of਍ഀ the 2003 IBC.਍ഀ 6. The design of the common wall between dwelling units (fire resistive party wall) exceeds਍ഀ the requirements of Section R317 of the 2003 IRC for dwelling unit separation of two-਍ഀ family dwellings (Section R317.1). The 30-minute fire resistive wall will be constructed਍ഀ similar to a two-hour fire-resistance-rated wall and will extend to and be tight against the਍ഀ exterior walls and will extend to the underside of the roof sheathing, fire blocking or fire਍ഀ caulking. ?4VZ%T1W."J f*QL 177 7108਍ഀ 7. The elevator shaft from the parking garage level to the residential levels will be protected਍ഀ with a three-hour elevator lobby at the private garage level only. The elevator shaft਍ഀ communication to the residential units will not be provided with either an elevator lobby਍ഀ or any special smoke protection of the elevator shaft or opening to the elevator shaft.਍ഀ The recommendations in this request meet the spirit and intent of the 2003 IFC and IBC, and do਍ഀ not compromise either the life safety of the occupants or the property and buildings. This request਍ഀ for administrative modification is intended only for the new Vail Front Door Chalet Residences਍ഀ building and is not intended to be applied to any other project in the Town of Vail, nor should it਍ഀ be considered as precedent setting for any other projects with similar conditions.਍ഀ We greatly appreciate the continued cooperative spirit already given to the project from the Town਍ഀ of Vail Building and Fire Officials. Based on approval of this request for administrative਍ഀ modification the design team will proceed with development of the fire protection and life safety਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 16਍ഀ plans with involvement from the Building and Fire Officials.਍ഀ We request your concurrence of the alternative method of design, which is based on a਍ഀ performance-based scheme, by signature below.਍ഀ Should you have any questions regarding this Request for Administrative Modification please਍ഀ call me at 303.422.7400.਍ഀ Prepared by:਍ഀ BCER Engineering, Inc.਍ഀ May 15, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ May 23, 2006਍ഀ Page 17਍ഀ SIGNATURE PAGE਍ഀ Chalet Residences (Building E)਍ഀ Vail Front Door - Vail਍ഀ Request for Administrative Modification਍ഀ Modified May 15, 2006਍ഀ April 3, 2006਍ഀ Prepared by:਍ഀ BCER Engineering, Inc.਍ഀ May 15 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ Concurred by:਍ഀ Authorized Representative਍ഀ Date਍ഀ Vail Resorts Development Company਍ഀ Concurred by:਍ഀ May 23, 2006਍ഀ Authorized Representative਍ഀ Date਍ഀ 4240 Architecture਍ഀ Approved by:਍ഀ Charlie Davis਍ഀ Date਍ഀ Town of Vail Chief Building Official਍ഀ Mike McGee਍ഀ Date਍ഀ Vail Fire and Emergency Services Fire Marshal਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ May 23, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ Page 18਍ഀ b ff਍ഀ ENGINEERING, INC.਍ഀ Marc E. Espinosa਍ഀ David B. Robinson, P.E.਍ഀ Richard D. Matthies, P.E.਍ഀ JUL 06 U Mi਍ഀ FIRE & LIFE SAFETY REPORT and਍ഀ - ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ REVIE.AjEn਍ഀ COLORADO INSPECTION਍ഀ AGENCY਍ഀ Prepared For:਍ഀ 42140 ARCHITECTURE਍ഀ 1621 Eighteenth Street, Suite 200਍ഀ Denver, Colorado 80202਍ഀ Attn:਍ഀ Phone:਍ഀ Facsimile:਍ഀ Presented To:਍ഀ Randy Hart਍ഀ 303.292.3388਍ഀ 303.292.3133਍ഀ Town of Vail (TOV)਍ഀ Building Department਍ഀ Attn: Charlie Davis, Chief Building Official਍ഀ Vail Fire and Emergency Services਍ഀ Attn: Mike McGee, Fire Marshal਍ഀ BCER Engineering, Inc.਍ഀ Project No. 44606002਍ഀ Modified -b਍ഀ Modified Ma਍ഀ April 3, 2006਍ഀ ADMINISTRATIVE MODIFICATION June 14. 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page I਍ഀ This document describes, in conceptual terms, the fire protection features of The Vail Front Door਍ഀ project in Vail, Colorado. This Life Safety Report and Administrative. Modifi ation is intended to਍ഀ address the residential portions of the nr~lect of the building known as Building F and should਍ഀ reference as a companion document the Vail Front Door Building A B, Cand D Life Safet),਍ഀ Report.਍ഀ This package intends to describe, in performance-based language, the overall approach to active਍ഀ and passive fire protection features in the facility, whether required by Code, the Authority਍ഀ Having Jurisdictions, or as a result of an Owner request. It also describes the interaction of these਍ഀ systems in providing an overall coordinated fire protection package.਍ഀ The application of this administrative modification will provide an equivalent level of life-safety਍ഀ to Section 503.1.1, Exception 2 of the 2003 International Fire Code (IFC) design requirements਍ഀ for fire apparatus access road requirements. The application of this administrative modification਍ഀ will also provide an equivalent level of life-safety to Section 508.2 of the 2003 International਍ഀ Building Code (IBC) design requirements for mixed use of enclosed parking garage (Group S-2)਍ഀ below and individual residential structure above.਍ഀ The enclosed parking garage (Group S-2) is referenced as the "residential parking structure" in਍ഀ the project design documents and for consistency is referenced as the residential parking structure਍ഀ throughout the remainder of this request.਍ഀ This request presents a code methodology based on the design issues identified in these਍ഀ discussions, which are:਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 2਍ഀ 2. Establishing a level of understanding and equivalency of the Group R residential units਍ഀ attached to the ('group S-2 Parking Garage, with the Group R (Residential Occupancy)਍ഀ above in accordance with Section S09.2 of the 2003 IBC'., and਍ഀ 3. F.stahlishing_a level of understanding and equivalency of the construction features of the਍ഀ separation between the Group S-2 subterranean Parking Garage. and each of the Group R਍ഀ dwelling stnictures, separation between each of the dwelling structures, as well as਍ഀ separation between each of the Group R-3 individual units within the dwelling structure਍ഀ = z਍ഀ (party wall)-਍ഀ This is a request for an administrative modification. It is intended to document the approach for਍ഀ fire protection and life safety and recommend specific provisions for the Vail Front Door Chalet਍ഀ Residences project.਍ഀ The 2003 International Building Code (IBC) permits this submittal and documentation process਍ഀ for the approval of alternate materials, design and methods of construction under Sections 104.10਍ഀ and 104.11. The 2003 International Fire Code (IFC) permits this submittal and documentation਍ഀ process for the approval of alternate materials, design and methods of construction under਍ഀ Sections 104.8 and 104.9. These sections permit Building and Fire Officials to grant਍ഀ modifications for individual cases with special provisions. This administrative modification਍ഀ process allows officials to provide guidance when determining that the strict letter of the code is਍ഀ not practical and when the modification is in conformance with the intent and purpose of the਍ഀ Code. Such modification must be a reasonable approach to complying with the current Code and਍ഀ not lessen the level of fire protection, the life safety of the occupants or impact the structural਍ഀ integrity of the building. The detail of any such action granting modification by this਍ഀ administrative modification process shall be recorded and entered into the files of the code਍ഀ enforcement agencies and considered to be the code for the design and construction of the਍ഀ project.਍ഀ See The Life Safety Report for the Vail Front Door - Commercial Portion of the project dated਍ഀ April 3, 2006 for details related to the buildings and parking structures adjacent to the Chalet਍ഀ Residential Project.਍ഀ The Chalets consist of five duplex residential structures and one triplex residential structure (total਍ഀ of 13 dwelling units resembling detached single family residences) residing above a subterranean਍ഀ parking garage for private vehicles. The residential structures are identified from north to south਍ഀ as Building 1 and 2 on the west end, Building 3 and 4 in the center, and Building 5 (triplex) and਍ഀ 6, which actually are situated next to each other with 5 being west of 6. Portions of building 5 are਍ഀ above portions of the Building 6 private parking garage. Building 6 does not have access to the਍ഀ subterranean private residential parking garage. A corner of Building 5 and a portion of Building਍ഀ 6 reside above the Tunnel of the new Building A Parking Garage and Loading Dock. In total, the਍ഀ subterranean private residential parking garage and the residential structures are approximately਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 3਍ഀ 75,700 ft2 in area. The residential structures are considered R or simply a residential occupancy਍ഀ classification with the subterranean private residential parking garage considered a S-2਍ഀ occupancy classification.਍ഀ The private residential parking garage and the private garage for Building 6 are accessed from਍ഀ Vail Road via a road residing above the Tunnel of the new Building A Parking Garage and਍ഀ Loading Dock, leading to a roundabout in front of the new Building C Ski Club. Beyond the਍ഀ roundabout, another road provides access to the existing One Vail Place parking garage.਍ഀ All but two residential structures will be four-levels with three stories above grade. One਍ഀ residential unit within Building 5 and one residential unit within Building 6 will have only three਍ഀ levels. The lowest levels are all at different elevations. The residential structures are located on਍ഀ top of, and on the side of the private residential parking garage that serves them. The private਍ഀ residential parking garage has a second level mechanical equipment room serving the residential਍ഀ structures with utilities metered separately.਍ഀ Each of the residential units will be equipped with an elevator. Buildings 2 and 4 are accessed਍ഀ from the private residential parking garage via elevator, while Buildings 1, 3 and 5 are accessed਍ഀ directly without use of an elevator. Building 6 has its own private garage. As each of the਍ഀ residential structures lowest levels begin at different elevations, the height of each elevator shaft਍ഀ varies to accommodate the elevation of the floors each shaft serves. Due to the varying elevations਍ഀ of each residential structure, some Buildings actually have structural void spaces. These void਍ഀ spaces are to be protected by one or multiply means of NPFA 13 approved methods of protecting਍ഀ void spaces. (See G021).਍ഀ The private residential parking garage and the separate residential structures above will be਍ഀ constructed under the provisions of the 2003 editions of the International Codes and the Town of਍ഀ Vail Amendments. The facility will net he treated as on overall building in regards to਍ഀ construction type and allowable areas, ac ge aration by fir resistive walls- F.ach building area਍ഀ may have non-separated use,, as allowed by code-਍ഀ The private residential parking garage is occupied with parking of private motorized vehicles and਍ഀ storage for each residential unit, accessible from the residential parking garage. The private਍ഀ residential parking garage is also occupied with incidental use areas such as a trash room,਍ഀ mechanical and electrical rooms, storage rooms, and Fire Command room for the Chalets.਍ഀ The residential units are most like a single-family residential unit. Section 310 of the 2003 IBC਍ഀ defines the various residential occupancies as follows:਍ഀ ➢ R-1 is reserved for residential occupancies where occupants are transient in nature; Mie਍ഀ Vail Front Door Residential Chalets are not this type of occu anc਍ഀ ➢ R-2 is reserved for residential occupancies containing more than two dwelling units਍ഀ where the occupants are permanent in nature; The Vail Front Deer Residential C'hal਍ഀ ADMINISTRATIVE MODIFICATION June 14, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E- Residential Chalets਍ഀ VAIL, COLORADO Page 4਍ഀ ➢ R-3 is reserved for residential occupancies where the occupants are permanent in nature਍ഀ and not classified as R-1, R-2, R-4 or I, and where buildings do not contain more than਍ഀ two dwelling units. The Vail Front Door Residential Chalets are a series of duplexes਍ഀ separated by a two-hour fire resistive wall with one unit being a triplex residential unit.਍ഀ ➢ R-4 is reserved for residential occupancies arranged as residential care/assisted living਍ഀ facilities. The Vail Front Door Residential Chalets are not this ty a of occupancy.਍ഀ Section 310.2 of the 2003 IBC defines residential or dwelling unit as a single unit providing਍ഀ complete, independent living facilities for one or more persons, including permanent provisions਍ഀ for living, sleeping, eating, cooking, and sanitation. The residential or dwelling structures਍ഀ "closely resemble" five, stand-alone duplex (two-family) and one triplex residential buildings.਍ഀ Due to the resemblance to stand-alone duplex residential buildings and the definitions of R਍ഀ occupancies as well as a dwelling unit, the design team recommends classification of each of the਍ഀ individual residential or dwelling structures as a residential occupancy that most closely਍ഀ resembles a Group R-3 Occupancy-਍ഀ Fire Department access to the south side of the Chalets is limited. Fire Protection features have਍ഀ been designed to supplement Fire Department response to this area. This includes the installation਍ഀ of exterior standpipe hose valves that are connected to the building standpipe system. The਍ഀ locations of these valves are located on the attached fire protection site plan and have been਍ഀ approved by the TOV fire department.਍ഀ The building as a whole will be constructed under the provisions of the 2003 editions of the਍ഀ International Codes and the Town of Vail Amendments. The building is divided into several਍ഀ buildings and separated by a series of 3-hour firewalls with the Chalets being divided into਍ഀ separate buildings and fire areas through the use of 2-hour fire resistive walls between units.਍ഀ The proposed fire protection and life-safety systems for the Vail Front Door Chalet Residence਍ഀ buildings include the following features:਍ഀ Hydraulically designed and supervised automatic sprinkler system throughout the਍ഀ residential and private parking garage portions of the building, installed in accordance਍ഀ with NFPA 13, 2002 Edition. The water supply to each separate residence will come from਍ഀ a bulk water main in the parking garage and be controlled by a main supervised control਍ഀ valve with main flow switch near the water entry. A supervised control valve with਍ഀ addressable flow switch downstream will also control each residential unit.਍ഀ The residential automatic sprinkler systems will be installed throughout the residential਍ഀ building in accordance with NFPA 13, 2002 Edition, utilizing either automatic sprinklers਍ഀ in concealed spaces or compliance with one of the fifteen methods of constructing਍ഀ concealed spaces to not require sprinkler protection described in section 8.14.1.2 of਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 5਍ഀ NFPA 13.਍ഀ The residences private parking structure automatic sprinkler protection will be installed਍ഀ throughout utilizing a single separate zone from the bulk water main in the parking਍ഀ garage and be controlled by a supervised control valve with addressable flow switch.਍ഀ 2. A separate Class I, manual dry standpipe/hydrant system that is interconnected to the਍ഀ water supply entry via a normally-closed, supervised, control valve, will also be provided਍ഀ with hose connections throughout. The standpipe system will feature a hose valve with਍ഀ two 2-I/2 inch valve with 1-I/2 inch reducers at each valve. The standpipe system will be਍ഀ designed in accordance with NFPA 14, 2003 Edition and local requirements.਍ഀ 3. A fully addressable and analog fire alarm system throughout the residential and private਍ഀ parking garage portions of the building to notify the building occupants and the fire alarm਍ഀ monitoring agency of emergency will also be provided. The fire alarm system design will਍ഀ be in accordance with NFPA 72, 2002 Edition and local TOV draft amendments to the਍ഀ 2003 IBC and 2003 IFC.਍ഀ Apnlienble Codes਍ഀ The design requirements for fire apparatus access roads come from the 2003 IFC Sections 503.਍ഀ 2003 IFC Design Requirements਍ഀ Section 503. 1.1 requires fire apparatus access roads be constructed for every building, such that਍ഀ all portions of the exterior walls of the building are within 150 feet of the fire apparatus access਍ഀ roads as measured by an approved route around the exterior of the building. Due to adjoining਍ഀ topography and non-negotiable grades surrounding the project site, constructing code compliant਍ഀ fire apparatus access roads is not feasible.਍ഀ Exception 2 of Section 503. 1.1 allows the fire code official to increase the maximum 150-foot਍ഀ dimension when the fire apparatus access roads cannot be installed because of location on਍ഀ property, topography, waterways, non-negotiable grades or similar conditions, and an approved਍ഀ alternate means of fire protection is provided.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 6਍ഀ Recommendation਍ഀ The Vail Front Door Chalet Residences site will not meet the requirements of Section 503 of the਍ഀ 2003 IFC due to topography, proximity and non-negotiable grades. The project must proceed਍ഀ with additional fire protection features above what is prescriptively required in the code. The਍ഀ additional fire protection features identified in this report are intended to establish an equivalent਍ഀ level of fire- and life-safety afforded for complying with the maximum 150-foot dimension of਍ഀ fire apparatus access roads.਍ഀ Applicable Codes਍ഀ Section 903.2.7 of the 2003 IBC and the same section in the 2003 IFC require all buildings with਍ഀ Group R occupancies to have a fire sprinkler system throughout the building. Section 903.2.9 of਍ഀ the 2003 IBC also requires fire sprinkler systems for Group S-2 enclosed parking garages, and਍ഀ enclosed parking garages when located beneath other occupancy Groups. The private parking਍ഀ garage portion of the building would be required to have a NFPA 13 fire sprinkler system.਍ഀ Section 903.3.1.2 of the 2003 IBC and the same section of the 2003 IFC allow the Group਍ഀ residential portion of the building to have a NFPA 13R fire sprinkler system.਍ഀ NFPA 13 and 13R Fire Sprinkler Design Requirements਍ഀ With a few exceptions, a NFPA 13 fire sprinkler system requires coverage for all habitable areas਍ഀ of a building, as well as, combustible concealed spaces. A NFPA 13R fire sprinkler system਍ഀ allows for the omission of fire sprinkler coverage in small areas within a building and also omits਍ഀ sprinkler coverage within combustible concealed spaces. A NFPA 13R fire sprinkler system is਍ഀ also hydraulically designed for life safety preservation and minimal property preservation. Since਍ഀ the NFPA 13 standard requires greater coverage and hydraulic design criteria, it can be viewed as਍ഀ a design standard that provides a greater level of fire- and life-safety as well as property਍ഀ preservation than the NFPA 13R design standard.਍ഀ The current design intends to provide a compliant NFPA 13 fire sprinkler system throughout the਍ഀ Group R-3 dwelling units to provide a greater level of fire- and life-safety than is required by the਍ഀ 2003 IBC and 2003 IFC (for NFPA 13 R systems).਍ഀ As an equivalency component for compliance with Section 503 of the 2003 IFC fire apparatus਍ഀ access roads, it is recommended by the design team that the Town of Vail Building and Fire਍ഀ Officials accent the installation of a NFPA 13 fire sprinkler stem throughout the Group R-3਍ഀ dwelling occupancies and an exterior manual dry standpipe ,ystem at grade- These standpipes਍ഀ will he located as currently apprprvedat grade of the Chalets_ The sprinkler and exterior standpipe਍ഀ System is heingprovided as an additional level of fire and life-safety to help establish an਍ഀ acceptable level of equivalency fora complying fire, apparatus access-਍ഀ Concealed spaces (attic, crawl space, and interstitial spaces) within the residential portions of the਍ഀ building are to be sprinklered or comply with concealed spaces not requiring sprinkler protection਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 7਍ഀ in NFPA 13 (Section 8.14.1.2). Individual supervised control valves would be installed at the਍ഀ ceiling level, but accessible, in the tunnel to isolate the NFPA 13 fire sprinkler system of each਍ഀ individual Group R-3 dwelling unit. Each water supply to the dwelling units would attach to a਍ഀ bulk sprinkler system main that would attach to a riser in the water entry room near the Fire਍ഀ Command room with the main fire sprinkler and standpipe system control valves.਍ഀ Applicable Codes਍ഀ Section 907.2 of the 2003 IBC and the same section in the 2003 IFC require approved manual,਍ഀ automatic, or manual and automatic fire alarm systems be provided in new buildings and਍ഀ structures in accordance with Sections 907.2.1 through 907.2.23. Where automatic sprinkler਍ഀ protection installed in accordance with Section 903.3.1.1 (NFPA 13) or 903.3.1.2 (NFPA 13R) is਍ഀ provided and connected to the building fire alarm system, automatic heat detection is not਍ഀ required. Sections 907.2.1 through 907.2.23 specify the occupancies or conditions that require਍ഀ some form of fire alarm system. Group S-2 occupancies are not included in these sections and਍ഀ therefore no form of fire alarm is required in the Group S-2 occupancy except that necessary for਍ഀ the required automatic sprinkler flow alarms and tamper switches as well as manual pulls and਍ഀ notification devices. Group R-3 occupancies are included in Section 907.2.10.1.2 of the 2003਍ഀ IBC and the same section in the 2003 IFC and require single- or multiple-station smoke alarms਍ഀ installed and maintained in Group R-3 occupancies regardless of occupant load at all of the਍ഀ following locations:਍ഀ 1. On the ceiling or wall outside of each separate sleeping area in the immediate vicinity of਍ഀ bedrooms.਍ഀ 2. In each room used for sleeping purposes.਍ഀ 3. In each story within a dwelling unit, including basements but not including crawl spaces਍ഀ and uninhabitable attics.਍ഀ Section 907.2 of the Town of Vail Amendments to the 2003 IFC requires every hotel, motel,਍ഀ apartment building, condominium building and commercial building with attached residential਍ഀ occupancies having 3 or more stories, or with more than 11 units, classified under the 2003 IBC਍ഀ as Group A- 1, A-2, A-2.1, A-3, A-4, B-2, R-1 and R-2, to have a fire alarm system installed in਍ഀ accordance with the 2003 IBC and the 2002 NFPA 72. The amendment does not indicate that਍ഀ Section 907.2 is deleted and replaced so it is assumed that the amendment for Section 907.2 is a਍ഀ modification only. Neither the amendment for Section 907.2 nor any of the amendment Section਍ഀ 907.2 subsections identify any fire alarm requirements for S-2 or R-3 occupancies.਍ഀ Section 907.2 of the 2003 IBC and the same section in the 2003 IFC require that an approved਍ഀ automatic fire detection system be installed in accordance with the provisions of NFPA 72.਍ഀ One of the most reliable forms of fire alarm systems is one that is fully addressable and analog਍ഀ (intelligent). Section 907.2.8.3 of the Town of Vail Amendments to the 2003 IFC requires all਍ഀ Group R-1 occupancies to have smoke alarms installed that are fully addressable, analog systems.਍ഀ The amendment does not have a similar requirement for Group R-3 occupancies.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 8਍ഀ NFPA 72 Fire Alarm Design Requirements਍ഀ Single- and multiple-station alarm requirements for one- and two-family dwelling units are਍ഀ addressed in Section 11.5.1 of the 2002 NFPA 72 as follows:਍ഀ 1. Smoke detection is required in the same locations as is required in Section 907.2.10.1.2਍ഀ of the 2003 IBC and the same section in the 2003 IFC, above. Smoke detection is਍ഀ required as follows (Section 11.5.1.1 of 2002 NFPA 72):਍ഀ a. In all sleeping rooms.਍ഀ b. Outside of each separate sleeping area, in the immediate vicinity of the sleeping਍ഀ rooms.਍ഀ c. On each level of the dwelling unit, including basements.਍ഀ 2. Notification is required as follows (Section 11.5.1.2 of 2002 NFPA 72):਍ഀ a. Fire-warning equipment for dwelling units shall provide a sound that is audible in਍ഀ all occupied dwelling areas.਍ഀ b. Where more than one smoke or heat alarm is installed for new construction, they਍ഀ shall be arranged so that the operation of any smoke or heat alarm causes the਍ഀ alarm in all smoke and heat alarms within the dwelling unit to sound.਍ഀ A fully addressable and analog fire alarm system is one where the initiating devices are਍ഀ addressable and analog. An addressable device is a fire alarm system component with discrete਍ഀ identification that can have its status (alarm status) individually identified. An analog device਍ഀ transmits a signal indicating varying degrees of condition (such as a fault, clean or dirty) as਍ഀ contrasted with a conventional initiating device, which can only indicate an on-off condition.਍ഀ Recommendation਍ഀ As an equivalency component for compliance with provisions of this request, it is recommended਍ഀ by the design team that the Town of Vail Building and Fire Officials accept the installation of a਍ഀ fully addressable and analog fire alarm system that is designed with the location and notification਍ഀ requirement. of a single- and multiple- station fire alarm system for the dwelling units in the਍ഀ Grou jR 3 dwelling occupancies as an additional level of fire- and life- safety t^ o hel establish਍ഀ an acceptable level of equivalency, The residential parking garage (C'p S-2) will also be਍ഀ provided with fully addressable and analog fire alarm with tunnel initiating and notification਍ഀ devices as described below-਍ഀ The entire building would be on a single fire alarm system with multiple zones. The parking਍ഀ garage would be on one zone and each of the dwelling units would be on an individual zone. The਍ഀ fire alarm control panel would be located in the Fire Command Room at the primary fire਍ഀ department access point and will report to the Vail Front Door main Fire Alarm System.਍ഀ Each dwelling unit initiating fire. alarm zone would consist of a flow switch and tamper for the਍ഀ automatic sprinklers protecting the private garage and storage unit in the tunnel for that unit as਍ഀ well as all of the sprinklered portions of the dwelling unit. Each dwelling unit initiating fire਍ഀ alarm zone would also consist of heat detection devices located in the private garage and storage਍ഀ unit in the garage, smoke/heat detection devices throughout all levels of the dwelling unit. No਍ഀ ADMINISTRATIVE MODIFICATION June 14, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page 9਍ഀ manual pull devices are planned for the individual dwelling unit fire alarm zones. Dwelling unit਍ഀ smoke detection devices would be designed in accordance with the NFPA 72 requirements for਍ഀ location and notification requirements of single- and multiple- station fire alarm system for one-਍ഀ and two- family dwelling units (Section 11.5.1.1 of the 2002 NFPA 72). Only automatic਍ഀ sprinkler water flow alarms on each residential zone would transmit a general alarm to a਍ഀ supervisory station (notification to the fire department) as smoke detectors would transmit only a਍ഀ supervisory alarm to the Fire Alarm Control Panel. Residential zone automatic sprinkler water-਍ഀ flow alarms and heat detector alarms would initiate local alarm for the dwelling unit of alarm਍ഀ initiation as well as the adjacent dwelling unit.਍ഀ The residential parking garage initiating fire alarm zone will consist of the main flow switch for਍ഀ the automatic sprinkler system for the automatic sprinkler systems of the parking garage, the਍ഀ control valve tamper switches and heat detection devices (addressable and analog) in the various਍ഀ rooms within the parking garage. The residential parking garage initiating fire alarm zone would਍ഀ also consist of manual pull stations strategically located throughout the parking garage to be਍ഀ within close proximity of the personnel doors for each unit, as well as manual pull stations near਍ഀ each exit from the residential parking garage.਍ഀ The parking garage notification fire alarm zone will consist of horns and strobes located for਍ഀ proper coverage throughout the tunnel in accordance with NFPA 72.਍ഀ Applicable Codes਍ഀ Section 508.2 of the 2003 IBC allows Group S-2 enclosed parking garage with Group R਍ഀ occupancies above to function as separate buildings in regards to area limitations, continuity of਍ഀ firewalls, limitations of stories and type of construction. Table 704.8 has the requirements for਍ഀ un-protected openings in exterior walls. Table 602 has the requirements for the fire-resistance਍ഀ rating of exterior walls based on fire separation distance.਍ഀ From a code definition standpoint the Chalet Residences and private parking garage is a series of਍ഀ several single buildings. A Group S-2 below-grade, enclosed parking garage connects separate਍ഀ Residential Group R-3 building sections that contain two or three individual dwelling units each.਍ഀ Though this is a single building, the design team proposes to construct the building so it can਍ഀ function from a fire separation standpoint as a Group S-2 enclosed parking structure with਍ഀ separate Group R dwelling above it in accordance with Section 508.2 of the 2003 IBC.਍ഀ To make this acceptable the following conditions of Section 508.2 of the 2003 IBC would be਍ഀ met:਍ഀ 1. Part 1 of Section 508.2 requires the below-grade Group S-2 enclosed residential parking਍ഀ garage would be constructed with Type I-A construction. A 3-hour horizontal਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 10਍ഀ floor/ceiling assembly above the garage separating it from any portion of Group R-3਍ഀ dwelling areas above it would be provided.਍ഀ 2. Part 2 of Section 508.2 allows for 2-hour fire-resistance rated shafts/stairways to਍ഀ penetrate the 3-hour horizontal assembly. There is planned a two-hour rated elevator਍ഀ shaft enclosure from the private residential parking garage below into the separate਍ഀ residential dwelling units above. The elevator hoist-way will be separated from the਍ഀ parking garage by a one-hour elevator lobby.਍ഀ 3. The connected structure to the Group S-2 will contain only Group R occupancies in਍ഀ accordance with Part 3 of Section 508.2.਍ഀ 4. The enclosed garage level will have only parking and storage of private motorized਍ഀ vehicles as well as similar uses incidental to the operation of the building. In addition the਍ഀ enclosed garage level will be protected throughout by an approved automatic sprinkler਍ഀ system. All of this in accordance with Part 4 of Section 508.2.਍ഀ 5. Part 5 of Section 508.2 has a requirement that the maximum building height will not਍ഀ exceed the limits of Table 503. Since the building will have a fire sprinkler system,਍ഀ Section 504.2 allows for a 20-foot increase in building height increase from Table 503਍ഀ (40 feet without the increase) to a height of 60 feet. This height limitation will be met.਍ഀ The above narrative justifies application of Section 508.2 of the 2003 IBC to consider the਍ഀ subterranean Group S-2 parking garage as a separate building from the Group residential਍ഀ dwelling units above in regards to area limitations, continuity of fire walls, limitations of stories਍ഀ and type of construction.਍ഀ These separate residential dwelling areas will have portions of exterior walls that face each other.਍ഀ The separation distance between these facing exterior walls is greater than 5 feet. Per Section਍ഀ 704.5 of the 2003 IBC requires an exterior wall to be rated from the inside when the fire਍ഀ separation distance is greater than 5 feet. Given the fire separation distance between the separate਍ഀ residential structures, the fire resistance rating from the inside is being utilized. Footnote f of਍ഀ Table 704.8 allows for an unlimited amount of un-protected openings in exterior walls for Group਍ഀ R-3 occupancies with a fire separation distance greater than 5 feet. Therefore there will be no਍ഀ special protection of openings in the Residential Chalets.਍ഀ These residential dwelling units will have roof eaves that utilize wood exterior materials. This is਍ഀ not prohibited by the 2003 IBC, however, is an opportunity for improving the risk of exterior਍ഀ vertical fire spread into the attic spaces via the eave overhang by adding an additional level of਍ഀ construction fire resistance. This additional level of fire resistance could consist of a single layer਍ഀ of noncombustible construction material directly behind the exterior wood material on the਍ഀ bottom side of the roof eaves.਍ഀ To utilize Type V construction of the dwelling residential structures, it is recommended by the਍ഀ design team that the Town of Vail Building and Fire Offic iAs adept the demon of the bulding਍ഀ ADMINISTRATIVE MODIFICATION June 14, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page I I਍ഀ using the increased fire-resistive separation provisions of Section 508-2 of the 2003 IBC and the਍ഀ fire resistive wall separations between the residential units. The design team believes that the਍ഀ fire resistive separation between the Group S-2 parking garage and Group Residential dwelling਍ഀ units mitigates a large portion of the fire exposure potential of this large building and separates਍ഀ the private parking garage and the residential structures above. By compartmenting the building਍ഀ areas and limiting this fire exposure, the maximum fire potential of the overall building is greatly਍ഀ reduced. It is also recommended by the design team that the Town of Vail Building and Fire਍ഀ Officials accept the design of the exterior walls that face each other between the individual਍ഀ dwelling areas being one-hour walls rated from the inside only and that unprotected openings on਍ഀ these walls be unlimited in area. With the increase fire resistive separation afforded by the 2003਍ഀ IBC, Section 508.2 provision, the design team feels the one-hour fire-resistive exterior walls of਍ഀ the residential structures can be rated from the inside according to Section 704.5 and window਍ഀ opening can be un-protected according to Footnote f of Table 704.8. All exterior walls will be਍ഀ one-hour rated from the inside only which complies with the requirements for exterior bearing਍ഀ walls.਍ഀ Applicable Codes-਍ഀ Section 503.2 of the 20 3 IBC requires any wall located on a proyert~4 line between adjacent਍ഀ buildings, which is used or adapted for ioint service between the two buildings, be constnicted as਍ഀ a fire wall in accordance with Section i0_5, without ovems, to create separate buildings These਍ഀ residential dwelling strictures "closely resemble" two or three dwelling unit stand-alone਍ഀ residential buildings that are individually constnlcted with fire separation between residential਍ഀ units and from the (Troup S-2 narking structure਍ഀ It is recommended that the Town of Vail Building and Fire Officials accent the, design of the਍ഀ common wall between dwelling units arty wall) as a wall exceeding the 1/9 -hour (30 minute਍ഀ requirements of the building mode-਍ഀ As these residential dwelling stnuctures "closer resemble" stand-alone duplex residential਍ഀ buildings that are individuall)Lattached to the (iro1m S-2 arking structure, the design team is਍ഀ recommending using a design fgr the common wall between units that is an additional level of਍ഀ fire- and life-safety to help establish an acceptable level of equivalency for the dwelling Unit਍ഀ separation- Althgngh poly a 30-minute fire resistive separation is required the dwelling unit਍ഀ separation are required to have a ji im et in accordance with the 113C. To meet the parapet਍ഀ requirement the walls separating the residential units will consist of the following features-਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14. 2006਍ഀ Page 12਍ഀ 2. The fire resistive wall between dwelling units will not have a parapet (vertical continuitvl਍ഀ extend through the roof assembly„ the wall will he tight against the exterior walls and will਍ഀ extend to the underside of the roof sheathing or he provided with fire blocking, fire਍ഀ caulking or the addition of an additional layer of 5/9-inch Tyne X gypsum hoard directly਍ഀ beneath the underside of the roof/ceiling assembly ~n the inside of the residential unit a਍ഀ minimum distance of 4 feet on both sides of the fire resistive wall. These methods of਍ഀ extending the fire resistive wall to the underside of roof meets the intent of the building਍ഀ and fire code and will limit and prevent the spread of fire between residential units.਍ഀ 3. There will he no additional protection features where the wall between the dwelling emits਍ഀ (fire resistive wall) intersects the exterior walls and there are horizontal projecting਍ഀ elements (balconies,, roof overhangs, canopies, and other architectural nrn~ectionsl_਍ഀ An elevator and elevator shaft is planned for each residential unit to communicate to the private਍ഀ residential parking garage below the private individual residential units above. This elevator is਍ഀ not being provided based on any building or fire code requirement. The elevator shaft is located਍ഀ between the Group S-2 Parking Garage and the Group R - residential dwelling unit above. The਍ഀ shaft also penetrates the horizontal floor/ceiling assembly of the parking garage. The elevator਍ഀ hoist-way and opening to the elevator is located near the complying open stair in each of the਍ഀ residential units.਍ഀ Applicable Codes਍ഀ Section 508.2 of the 2003 IBC allows Group S-2 enclosed parking garages with Group R਍ഀ occupancies above to function as separate buildings in regards to area limitations, continuity of਍ഀ fire resistive assemblies, limitations of stories and type of construction.਍ഀ Condition 1 of the list of requirements to treat this building in accordance with Section 508.2਍ഀ requires a 3-hour horizontal floor/ceiling assembly above the tunnel separating it from any਍ഀ portion of Group R-3 dwelling areas above it. As requested in the Construction Types, Areas,਍ഀ Heights and Separation Design section of this document, the design team would like to construct਍ഀ a 3-hour fire-resistive separation (in accordance with Table 715.3 of the 2003 IBC) between the਍ഀ private residential parking garage (Group S-2) and the separate residential dwelling units above.਍ഀ Condition 2 permits this building in accordance with Section 508.2 to allow for 2-hour fire-਍ഀ resistance rated shafts to penetrate the 3-hour separation assembly required between the parking਍ഀ garage and dwelling units as long as the shaft has opening protectives in accordance with Table਍ഀ 715.3 of the 2003 IBC. Table 715.3 of the 2003 IBC requires a minimum 90-minute fire door on਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 13਍ഀ the elevator. The Elevator doors are not intended to be protected with an elevator lobby or a door਍ഀ providing smoke protection over the elevator door in the residential units.਍ഀ To alleviate the need for providing an elevator lobby or smoke protection on the elevator door਍ഀ opening it is recommended by the design team that Town of Vail Building and Fire Officials਍ഀ residences on each residential floor. The design team believes that with the items described਍ഀ above that this to be an equivalent level of fire- and life-safety and therefore smoke protection of਍ഀ the opening into the elevator shaft would not be necessary.਍ഀ The issue presented in this administrative modification involves the design of additional fire and਍ഀ life-safety construction features that would overcome the issues of the fire apparatus access road਍ഀ design to create an equivalent level of life-safety. Also presented in this administrative਍ഀ modification is a level of understanding and equivalency of the Group R residential units਍ഀ attached to the Group S-2 Parking Garage with the Group R above. This is achieved in਍ഀ accordance with Section 508.2 of the 2003 IBC and a level of understanding and equivalency of਍ഀ the construction features of the separation between the Group S-2 parking garage and each of the਍ഀ residential dwelling structures, separation between each of the dwelling structures, as well as਍ഀ separation between each of the residential individual units within the dwelling structure (party਍ഀ wall). The design and current permit drawings have been based on meetings related to this਍ഀ administrative modification. This request requires the acceptance of the code equivalency਍ഀ approach presented in this report. The design team requests the Town of Vail Building and Fire਍ഀ Department approval of this equivalent design.਍ഀ As summary, the design of the Chalets at Vail Front Door is based on this document as follows:਍ഀ 1. From a code definition standpoint the Vail Front Door Chalet Residences project is a਍ഀ series of separate buildings. A subterranean private parking garage connects separate਍ഀ residential building above. The building functions from a fire separation standpoint as a਍ഀ Group S-2 enclosed parking structure with Group R dwelling above it in accordance with਍ഀ Section 508.2 of the 2003 IBC.਍ഀ 2. The residential dwelling structures "closely resemble" stand-alone residential buildings਍ഀ that are individually attached to the Group S-2 parking structure. Due to the resemblance਍ഀ to stand-alone residential buildings and the definitions of R occupancies as well as਍ഀ dwelling unit, the design team recommends classification of each of the individual਍ഀ residential dwelling structures as a separate residential occupancy.਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14. 2006਍ഀ Page 14਍ഀ 3. As an equivalency to the requirements of constructing fire apparatus access roads and਍ഀ access features according to Section 503 of the 2003 IFC, the following design਍ഀ components for full equivalency are planned:਍ഀ a. Hydraulically designed and supervised automatic sprinkler system throughout the਍ഀ residential and tunnel portions of the building, installed in accordance with NFPA਍ഀ 13, 2002 Edition. Concealed spaces (attic, crawl space, and interstitial spaces)਍ഀ within the residential portions of the building are to be sprinklered or comply with਍ഀ concealed spaces not requiring sprinkler protection in NFPA 13 (Section਍ഀ 8.14.1.2).਍ഀ b. A separate Class I, manual dry standpipe/hydrant system that is interconnected to਍ഀ the other standpipe system and fire department connections.਍ഀ A fire alarm system throughout the three levels of residential and parking garage਍ഀ portions of the building to notify the building occupants and the fire alarm਍ഀ monitoring agency of emergency.਍ഀ d. The wall between dwelling units constructed as a two-hour fire-resistance-rated਍ഀ wall without openings in lieu of the prescriptively required 1/2-hour rated wall਍ഀ required by Section 317.1 of the 2003 IRC for NFPA 13 sprinklered residential਍ഀ dwellings.਍ഀ e. The roof eaves of the residential portion of the building constructed with an਍ഀ approved single layer of noncombustible construction material directly beneath਍ഀ the exterior wood material on the bottom side of the wood eaves.਍ഀ 4. Utilize Type V construction of the dwelling residential structures in accordance with the਍ഀ increased fire-resistive separation provisions of Section 508.2 of the 2003 IBC.਍ഀ 5. The exterior walls of the residential dwelling units constructed as one-hour walls rated਍ഀ from the inside only and that unprotected openings on these walls be unlimited in area.਍ഀ This in accordance with Section 704.5 of the 2003 IBC and Footnote f of Table 704.8 of਍ഀ the 2003 IBC.਍ഀ 6. The design of the common wall between dwelling units (fire resistive party wall) exceeds਍ഀ the requirements of Section R317 of the 2003 IRC for dwelling unit separation of two-਍ഀ family dwellings (Section R317.1). The 30-minute fire resistive wall will be constructed਍ഀ similar to a two-hour fire-resistance-rated wall without openings and will extend to and਍ഀ be tight against the exterior walls and will extend to the underside of the roof sheathing,਍ഀ fire blocking or fire caulking.਍ഀ 7. The elevator shaft from the parking garage level to the residential levels will be protected਍ഀ with a one-hour elevator lobby at the private garage level only. The elevator shaft਍ഀ communication to the residential units will not be provided with either an elevator lobby਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO਍ഀ June 14, 2006਍ഀ Page 15਍ഀ or any special smoke protection of the elevator shaft or opening to the elevator shaft.਍ഀ The recommendations in this request meet the spirit and intent of the 2003 IFC and IBC, and do਍ഀ not compromise either the life safety of the occupants or the property and buildings. This request਍ഀ for administrative modification is intended only for the new Vail Front Door Chalet Residences਍ഀ building and is not intended to be applied to any other project in the Town of Vail, nor should it਍ഀ be considered as precedent setting for any other projects with similar conditions.਍ഀ We greatly appreciate the continued cooperative spirit already given to the project from the Town਍ഀ of Vail Building and Fire Officials. Based on approval of this request for administrative਍ഀ modification the design team will proceed with development of the fire protection and life safety਍ഀ plans with involvement from the Building and Fire Officials.਍ഀ We request your concurrence of the alternative method of design, which is based on a਍ഀ performance-based scheme, by signature below.਍ഀ Should you have any questions regarding this Request for Administrative Modification please਍ഀ call me at 303.422.7400.਍ഀ Prepared by:਍ഀ BCER Engineering, Inc.਍ഀ June 14, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ ADMINISTRATIVE MODIFICATION June 14, 2006਍ഀ VAIL FRONT DOOR਍ഀ Building E - Residential Chalets਍ഀ VAIL, COLORADO Page 16਍ഀ SIGNATURE PAGE਍ഀ Chalet Residences (Building E)਍ഀ Vail Front Door - Vail਍ഀ Request for Administrative Modification਍ഀ Modified _Inne 14, 2006਍ഀ Modified y 15, 2006਍ഀ April 3, 2006਍ഀ Prepared by:਍ഀ BCER Engineering, Inc.਍ഀ June 14, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ Concurred by:਍ഀ Authorized Representative Date਍ഀ Vail Resorts Development Company਍ഀ 4240 Architecture਍ഀ Approved by:਍ഀ Charlie Davis਍ഀ Town of Vail Chief Building Official਍ഀ Date਍ഀ Mike McGee Date਍ഀ Vail Fire and Emergency Services Fire Marshal਍ഀ ADMINISTRATIVE MODIFICATION਍ഀ VAIL FRONT DOOR਍ഀ Buildin= E - Residential Chalets਍ഀ VAII., COLORADO਍ഀ June 14.2(X)6਍ഀ Pare 17਍ഀ b ff਍ഀ ENGINEERING, INC.਍ഀ Zzad fhp through Engw-ng਍ഀ Marc E. Espinosa਍ഀ David B. Robinson, P.E.਍ഀ Richard D. Matthies, P.E.਍ഀ ADMINISTRATIVE MODIFICATION REQUEST #1਍ഀ Vail Front Door and the Lodge South Tower and Special Opening Protection਍ഀ Vail Front Door and Lodge Tower਍ഀ Vail, Colorado਍ഀ Tracking Number AM2006-1਍ഀ May 23, 2006਍ഀ This request for Administrative Modification is based on the provisions of the International Building਍ഀ Code that permits the use of alternate methods and equivalency for unique building conditions. The Vail਍ഀ Front Door is a unique building project in Vail Colorado that will have several requests for alternate਍ഀ methods or administrative modifications.਍ഀ This request is intended to be a part of the series of documents known as the Vail Front Door Life Safety਍ഀ Report for Buildings A, B, C and D, the Life Safety Report and Request for Administrative Modification਍ഀ for Vail Front Door Chalet Residences and the Memorandum of Understanding.਍ഀ Specifically this request is related to the common wall between the Vail Front Door and the Lodge South਍ഀ Tower and special protection of the opening between these buildings.਍ഀ Separate entrances from the ramp/tunnel access are to be provided into the lower level parking garage and਍ഀ loading dock, the mid-level parking garage, and the upper level-parking garage. The mid-level parking਍ഀ garage is also accessible near the east side of the existing Lodge South Tower, between Lodge South਍ഀ Tower and Lodge at Vail, just south of the Lodge at Vail Porte cohere and main entrance (accessed from਍ഀ Vail Road near the intersection with Willow Road). The access to the Lodge South Tower parking level is਍ഀ to be provided from the newly constructed Building A of the Vail Front Door.਍ഀ The Vail Front Door Building A Parking Garage is new Type I-A fire resistive construction. Adjacent to਍ഀ this area is the existing Lodge Tower South Building. The Lodge Tower South Building consists of਍ഀ enclosed parking and residential condominium units above. The Lodge Tower South Building as an਍ഀ existing building is considered to comply with the currently adopted building and fire code. The਍ഀ ownership groups of each building have agreed to access to the Lodge Tower South via the Vail Front਍ഀ Door Project. This request does not document any of those agreements and such agreements should be਍ഀ referenced as needed by the Town of Vail.਍ഀ Another design team did the code evaluation of the existing conditions of the Lodge Tower South਍ഀ Building. That evaluation determined that the existing construction type in the Lodge Tower South਍ഀ Building is Type I-B fire resistive construction. Early discussions between the design team and the Town਍ഀ of Vail Building and Fire Department determined that the separation between the new and existing਍ഀ building could be 2-hour fire resistive construction with 90-minute opening protection between the਍ഀ buildings. Discussions with the Town of Vail Fire Department suggested that a rated fire shutter would਍ഀ not be preferred to protect this opening. The concerns were the false activation of the fire shutter and਍ഀ difficulty in maintaining access between buildings. Since the wall and the opening are located on the legal਍ഀ property line between the buildings some protection of the opening is required. The fire department਍ഀ recommended a performance code based approach to protect the opening.਍ഀ - I -਍ഀ ` `MEWED BY਍ഀ 9਍ഀ Tb L 1 D 2006਍ഀ C 0[-,A;DOINSPECTION਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAX: 303-422-7900਍ഀ Review comments from Colorado Inspection Agency for both buildings have indicated that a 3-hour fire਍ഀ resistive wall should be provided between the Lodge Tower South Building and the Vail Front Door਍ഀ Parking levels. This request is intended to document the separation requirement the buildings and the਍ഀ protection of the opening.਍ഀ RECOMMENDATION਍ഀ Both areas are provided with automatic sprinkler protection. The wall separating the buildings will be਍ഀ rated as a 3-hour fire resistive wall. There are two openings that require protection. The wall near the਍ഀ loading dock will be protected with a 3-hour rated fire shutter. The other opening between the buildings਍ഀ connecting the parking areas will be provided with a water curtain at the opening and connection of the਍ഀ Lodge Tower parking garage and the new Building A Parking Garage. The water curtain shall be਍ഀ designed to provide 3 gallons per minute per foot over the length of the opening. The sprinkler heads in਍ഀ the water curtain will be spaced 6 feet on center and within 12 inches of the opening. The water curtain is਍ഀ to be located on both sides of the opening. This will provide redundancy from separate fire protection਍ഀ systems. Additionally, both parking garages are being provided with rate compensating heat detectors to਍ഀ provide early detection of a fire and annunciation of the fire in the parking garage. The fire alarm system਍ഀ will be modified to provide a heat detector from the respective building on each side of the opening to਍ഀ notify both buildings of a fire incident at the opening between the parking garages.਍ഀ The contractor through the fire protection and fire alarm sub-contractors will prepare shop drawings and਍ഀ construction sequencing for the modifications to the fire protection system. The shop drawings and਍ഀ construction sequencing will be reviewed and approved by BCER Engineering for submittal to the TOV਍ഀ Fire Department for their review, approval and issuance of a permit for compliance with this਍ഀ administrative modification.਍ഀ Prepared by:਍ഀ May 23, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ -2-਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAx: 303-422-7900਍ഀ SIGNATURE PAGE਍ഀ ADMINISTRATIVE MODIFICATION REQUEST਍ഀ Vail Front Door and the Lodge South Tower and Special Opening Protection਍ഀ Vail Front Door and Lodge Tower਍ഀ Vail, Colorado਍ഀ Tracking Number AM2006-1਍ഀ May 23, 2006਍ഀ May 23, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ Concurred by:਍ഀ Authorized Representative਍ഀ Date਍ഀ Vail Resorts Development Company਍ഀ Concurred by:਍ഀ May 23, 2006਍ഀ Authorized Representative਍ഀ Date਍ഀ 4240 Architecture਍ഀ Authorized Representative਍ഀ Date਍ഀ Lodge Tower South਍ഀ Authorized Representative਍ഀ Date਍ഀ KLIPP Architects - Lodge Tower South਍ഀ Approved by:਍ഀ Charlie Davis਍ഀ Date਍ഀ Town of Vail Chief Building Official਍ഀ Mike McGee਍ഀ Date਍ഀ Vail Fire and Emergency Services Fire Marshal਍ഀ SCR/scr਍ഀ -3-਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAX: 303-422-7900਍ഀ bi 3਍ഀ ENGINEERING, INC.਍ഀ Genf fnp throng! Gngi--g਍ഀ Marc E. Espinosa਍ഀ David B. Robinson, P.E.਍ഀ Richard D. Matthies, P.E.਍ഀ Fire Resistive Separations Between New and Existing Buil ings REVIEWED BY਍ഀ One Vail Place and New Skier Services਍ഀ Vail Front Door and Lodge Tower J U L 10 2006਍ഀ Vail, Colorado਍ഀ Tracking Number AM2006-2 COLOR AGENCY ECTION਍ഀ INSP May 23, 2006਍ഀ This request for Administrative Modification is based on the provisions of the International Building਍ഀ Code that permits the use of alternate methods and equivalency for unique building conditions. The Vail਍ഀ Front Door is a unique building project in Vail Colorado that will have several requests for alternate਍ഀ methods or administrative modifications.਍ഀ This request is intended to be a part of the series of documents known as the Vail Front Door Life Safety਍ഀ Report for Buildings A, B, C and D, the Life Safety Report and Request for Administrative Modification਍ഀ for Vail Front Door Chalet Residences and the Memorandum of Understanding.਍ഀ Specifically this request is related to the fire resistive separation provisions, no build zones and physical਍ഀ separations between new and existing buildings. This request is intended to address numerous conditions਍ഀ where this occurs but specifically the One Vail Place and Vail Front Door New Skier Services.਍ഀ The Vail Front Door Building Parking Garage is new and typically Type I-A fire resistive construction.਍ഀ Adjacent to these areas are several existing buildings with different construction types. Meetings early in਍ഀ the design process with the Town of Vail Building, Fire Department and Colorado Inspection Agency਍ഀ have been utilized to present the different conditions between the new and existing buildings.਍ഀ A number of fire resistive walls (fire walls, fire barriers and fire partitions) are planned for this project, as਍ഀ depicted under the facility description section in the Life Safety Report and the G-Code Series Drawings਍ഀ have been identified. The design team has met with the TOV Building and Fire Department to determine਍ഀ the locations of these fire resistive walls and floor ceiling assemblies. The G-series code drawings਍ഀ indicate the locations of these walls and floors. Some of the walls are intended to be 3-hour firewalls਍ഀ separating buildings. These firewalls, as planned in some cases do not comply with the prescriptive਍ഀ requirements of the 2003 IBC. Specifically, Section 705.1 and Section 503.2 of the IBC requires that਍ഀ firewalls considered to separate buildings shall be constructed without openings, in a vertical plane and਍ഀ from grade to above the roof via a parapet. Due to the unique property of Vail Front Door and the location਍ഀ of the new structures in relation to the existing structures, proximity between the buildings with openings਍ഀ in these fire resistive walls must exist. Again from the onset of the project the design team through਍ഀ meetings with the TOV Building and Fire Department and Colorado Inspection Agency planned to utilize਍ഀ an equivalency approach through additional fire protection features (active protection), operational਍ഀ considerations (management operations), and passive protection features to achieve protected openings਍ഀ that result in considering the buildings as separate buildings.਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAX: 303-422-7900਍ഀ The fire protection and life-safety systems for the Vail Front Door Project includes the following features:਍ഀ 1. Hydraulically designed and supervised automatic sprinkler system throughout the commercial,਍ഀ residential and private parking garage portions of the building, installed in accordance with NFPA਍ഀ 13, 2002 Edition.਍ഀ 2. A separate Class I, manual dry standpipe/hydrant system that is interconnected to the water਍ഀ supply entry via a normally-closed, supervised, control valve, will also be provided with hose਍ഀ connections throughout. The standpipe system will feature a hose valve with two 2-'/2 inch valve਍ഀ with 1-'/z inch reducers at each valve. The standpipe system will be designed in accordance with਍ഀ NFPA 14, 2003 Edition and local requirements.਍ഀ 3. A fully addressable and analog fire alarm system throughout the building to notify the building਍ഀ occupants and the fire alarm monitoring agency of emergency will also be provided. The fire਍ഀ alarm system design will be in accordance with NFPA 72, 2002 Edition and local TOV਍ഀ amendments to the 2003 113C and 2003 IFC.਍ഀ 4. A series of 2 and 3 hour fire-walls and floor ceiling assemblies are provided though-out the਍ഀ building. These firewalls will connect into floor ceiling assemblies proceeding horizontally and਍ഀ then continuing vertically as a firewall. The buildings are also compartmented into several areas਍ഀ utilizing occupancy separation walls. There are several conditions between new buildings and਍ഀ new and existing buildings utilizing 3-hour fire resistive construction.਍ഀ The table below has been taken from the Life Safety Report for reference in this document and indicates਍ഀ where some of the fire resistive separation walls are located.਍ഀ Description਍ഀ Separation Reasoning਍ഀ Occupancy਍ഀ *Fire Rating਍ഀ Group਍ഀ Construction Type਍ഀ Mid-Level Parking Garage (north਍ഀ Determining Construction Type਍ഀ S-2਍ഀ 3 Hr. Firewall਍ഀ wall)/Lodge South Tower Parking਍ഀ of Tower਍ഀ Type IA - HA਍ഀ Garage (south wall)਍ഀ Upper Level Parking Garage਍ഀ Ski Club Construction Type਍ഀ S-1਍ഀ 3 Hr. Firewall਍ഀ (north wall)/Ski Club Mid-Level਍ഀ Type IA - IA਍ഀ (south wall)਍ഀ Upper Level Parking Garage (east਍ഀ Skier Services Construction਍ഀ S-1਍ഀ 3 Hr. Firewall਍ഀ wall)/Skier Services Lower Level਍ഀ Type਍ഀ Type IA- VA਍ഀ (west wall)਍ഀ Spa of Lodge at Vail Lower and਍ഀ Determining Construction Type਍ഀ B਍ഀ 2 Hr.**਍ഀ Mid-Levels (east wall)/Existing਍ഀ of Lodge at Vail਍ഀ Type IA - Extg਍ഀ Lodge at Vail (west wall)਍ഀ Bldg਍ഀ Skier Services Lower Level਍ഀ Determining Construction Type਍ഀ S-1਍ഀ 3 Hr. Firewall਍ഀ (north portion of east wall)/One਍ഀ of One Vail Place਍ഀ Type VA - Extg਍ഀ and Floor਍ഀ Vail Place Lower Level (west਍ഀ Bldg਍ഀ Ceiling਍ഀ wall)਍ഀ Assembly਍ഀ Residences Parking Garage Walls਍ഀ Compliance with IBC 508.2਍ഀ Residential਍ഀ 3 Hr. Firewall਍ഀ and Ceiling/Residences***਍ഀ Type IA - VA਍ഀ -2-਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAX: 303-422-7900਍ഀ * Fire Rating as determined by use of 2003 IBC, Table 705.4 and Table 303.3.2਍ഀ The existing wall at the Lodge at Vail is believed to have been constructed as a 2 Hr. wall. This can be਍ഀ confirmed during demolition and remodel. The TOV has agreed to the Lodge at Vail being considered Type਍ഀ IIIA construction with a 2 Hr. Fire Resistive wall separation provided.਍ഀ The openings between the Lodge Tower South and Vail Front Door Building A will be protected by਍ഀ Administrative Modification #1 Dated May 23, 2006. All other openings in fire resistive walls will be protected਍ഀ with opening protectives in accordance with the building code.਍ഀ RECOMMENDATION਍ഀ The series of fire resistive wall and floor assemblies extending from the lowest level of the various਍ഀ buildings to the roof in conjunction with the fire protection systems being provided including automatic਍ഀ fire sprinkler and fire detection and alarm systems throughout meets the intent and spirit of the adopted਍ഀ building and fire code without compromising the life safety of the occupants of the new or existing਍ഀ buildings. Additionally, the interconnection of theses buildings or the sharing of either an actual or਍ഀ assumed property lines creating "no build zones" between buildings will ensure that the physical਍ഀ separation between new and existing buildings will also be maintained.਍ഀ Prepared by:਍ഀ May 23, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ -3-਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAx: 303-422-7900਍ഀ SIGNATURE PAGE਍ഀ ADMINISTRATIVE MODIFICATION REQUEST਍ഀ Fire Resistive Separations Between New and Existing Buildings਍ഀ One Vail Place and New Skier Services਍ഀ Vail Front Door - Vail, Colorado਍ഀ Tracking Number AM2006-2਍ഀ May 23, 2006਍ഀ 100਍ഀ May 23, 2006਍ഀ Steve Rondinelli, AIA Date਍ഀ Director of Fire Protection and Life Safety਍ഀ Concurred by:਍ഀ Authorized Representative Date਍ഀ Vail Resorts Development Company਍ഀ Concurred by:਍ഀ Aoar~ May 23, 2006਍ഀ Authorized Representative਍ഀ 4240 Architecture਍ഀ Approved by:਍ഀ Date਍ഀ Charlie Davis Date਍ഀ Town of Vail Chief Building Official਍ഀ Mike McGee Date਍ഀ Vail Fire and Emergency Services Fire Marshal਍ഀ SCR/scr਍ഀ -4-਍ഀ 5420 WARD ROAD, SUITE 200, ARVADA, COLORADO 80002-1838 • TELEPHONE: 303-422-7400 • FAX: 303-422-7900਍ഀ