HomeMy WebLinkAboutPermanent Ground Nail Wall Taplin Residence
115 Forest Road
Vail , Colorado
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Permanent Ground Nail Wall
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1 . Cover
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2. General Notes a�
3. Approximate Wall Location
4. Elevation View , / � �-- .
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5. Ground Nail Wall - Typical Cross Section . ; �
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6. Ground Nail Wall - Details �
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Sheet Revision Designed For. 0
�� Yeh and Associates, Inc. De`e RevisiodLccue Checkedby B&Y Drilling,�o�. �
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Project Number. OVer ��
Consulting Geotechnical Engineers 210-158 �
170 Mel Ray Road Glenwood Springs, CO 81601 ��br �J Date: Projeck Sheet Number:
Phone: (970) 384-1500 Fax: (970) 384-1501
Checked by: �J September 23,2010 Taplin Residence 1 of 6
1 .0 Ground Nail Wall Materials 3.0 Ground Nail Wall Design Parameters
7.1 Ground nails - Grade 75 threadbar or equivalent in accordance with ASTM A615, and galvanized or epoxy-coated in 3.1 The ground nail wall has been designed in general accordance with procedures contained in the FWHA "Manual
accordance with ASTM A153. for Design and Construction Monitoring of Soil Nail Walls", Report No. FHWA-SA-96-069R.
fy=75,000 psi
3.2 The following strength parameters walls were assumed for the subsoils based on the "Presumptive Soil
1.2 Grout - Grout may be neat-cement or with sand, with Type II cement in accordance with ASTM C150. Water-cement Parameters for Foundation Design, Proposed Improvements, 115 Forest Road, Vail, Colorodo" by HP Geotech,
ratio should be between 0.4 and 0.6. Inc., Project No. 110 044A, dated March 15, 2010.
f�c=1,500 psi minimum 3 day
f'c=3,000 psi minimum 28 day $ c y qult
(deg) (psf) (pcf) (psi)
Sand and Gravel Soils 30 150 125 27
1.3 End hardware - Nuts and washers shall be in accordance with ground nail manufacturer's recommendations. Bearing
plate shall be in accordance with ASTM A36, Grade 36. An experienced geotechnical engineer should verify the above design parameters during construction.
1.4 Shotcrete - Shotcrete mix shall consist of Type II cement in accordance with ASTM C150, potable water and normal
weight aggregate in accordance with ASTM C33. Admixtures, if used, should be non-corrosive to steel. 3.3 Groundwater level was assumed to be below the base of the wall.
f'c=4,000 psi (28-day strength)
3.4 Factors of safety
7.5 Welded wire mesh shall be in accordance with ASTM A185. Global - FS > 1.5
Nail Tension Strength Factor - �N = 0.55
1.6 Walers and vertical bearing bars shall be in accordance with ASTM A615. Nail Pullout Resistance Factor - �Q = 0.50
fy=60,000 psi Nail Head Strength Factor - �F = 0.67
1.7 Strip drains consist of 12" wide dimpled cores wrapped in geotextile. The compressive strength of the core should 3.5 Surcharge loading
be at least 20 psi when tested in accordance with ASTM D1621, and it's in-plane flow capacity should be at least
10 gpm/ft when tested in accordonce with ASTM D4716. No surcharge loading was assumed. -
1.8 Centrolizers should be plastic that will provide free passage of grout and attached to the nails in accordance with the
3.6 Corrosivity was assumed to be low.
manufacturer's recommendations.
2.0 Ground Nail Wall Construction Sequence 4.0 Special Notes
2.1 Excavate one lift to a mazimum depth of five feet. 4.1 Wall geometry used in design was based on information provided by REI Sructural, Inc. plans dated 09.02.10.
4.2 At least one verification test shall be performed on a ground nail to verify the contractors
2.2 Install ground nails at the locations and to the lengths shown on the plans. Ground nail location may vary by up to installation method and nail pull-out resistance in accordance with FHWA-SA-96-069R.
6". Tremie the grout from the bottom of the hole up.
4.3 Ground nail verification and proof testing sholl be performed in accordance with FHWA-SA-96-069R.
2.3 Install strip drains, welded wire mesh, walers and bearing bars as shown on the drawings. Use chairs to hold the
welded wire mesh away from the soil as necessary. 4.4 This design is valid only for B&Y Drilling at the subject site.
2.4 Install shotcrete to the minimum thickness shown on the drawings and to attain the minimum coverages specified 4.5 The ground nail wall may be redesigned at the discretion of Yeh and Associates based on verification test
herein. Give special attention to filling the void in the borehole above the grout line. Cold weather protection measures results.
may be necessary.
4.6 Yeh and Associates is not responsible for maintaining slope stability above and below the ground nail wall
2.5 Install the ground nail end hardware after the minimum inside coverage specified herein has been attained. While the during construction.
shotcrete is still wet, embed the plate into the shotcrete surface until there is no void behind the plate. 4.7 The contractors are responsible for field locating all nearby utilities. Conflicting utilities may require ground nail
Handtighten the nut. Install remainder of shotcrete over end hardware to minimum specified thickness wall redesign, at Yeh and Associates' discretion. �.=--�-- -���._
and minimum outside cover as specified herein. _
4.8 Yeh and Associotes is not responsible for quality control, quality assurance, changed conditions, problems -
2.6 Once the grout and shotcrete have attained 80% of their specific strengths, repeat 2.1-2.5 to the bottom of the resulting from improper construction techniques, or construction site safety.
wall. ,> _' J/7- -
4.9 Yeh and Associates is not responsible for wall layout. �j-�"l l '��'
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2.7 At the bottom lift, complete strip drains to daylight as shown on the drawings. -
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Sheet Revision Designed For:
Date Revision/Lcsue Checkedby B&Y Drilling,Inc.
� Yeh and Associates, Inc.
Consulting Geotechnical Engineers ProjectNumber: GP.TLP.T�al NOtES
210-158
170 Mel Ray Road Glenwood Springs, CO 81601 D��br �J Date: Projec[: Shee[Number:
Phone: (970) 384-1500 Fax: (970) 384-1501 September 23,2010 Taptin Residence 2 of 6
Checkedby: �J
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Inside Corner
Outside Corner
Strip Drains
8220 - - - - - - - - - - - - - - - - - 8220
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NAIL LENGTH SCHEDULE ;,�,��' ��
• 20 feet
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SCALE; HORIZONTAL 1' = 10'
VERTICAL 1' = 10'
Sheet Revision Des���d Fa�:
�� Date RevisiaWlssue Checked by B&Y Drilling,Inc. 1
Yeh and Associates, Inc. ProjectNumber: EleVat1011 V1eW
Consulting Geotechnical Engineers 210-158
170 Mel Ray Road Glenwood Springs, CO 81601 ��br �J Date: projec1; Sheet Numbcr.
Phone: (970) 384-1500 Fax: (970) 384-1501 September 23,2010 Taplin Residence 4 of 6
Checked by:
RDJ
MA%IMUM REINFORCEMENT REINFORCEMEM HORIZOMAL VERTICAL
WALL HEIGHT LENGTH SPACING SPACING
(DH) BAR (RL) (SH) (SV)
15 �� �8 GR4DE 75 ALL SEE SHEET 4 5 FEET 5 FEET
THREAD BAR
SHOTCREfE BATTER
VERTICAL TO 5
DEGREES MAX.
TOP OF WALL UPPER LEVEL FOUNDATION ELEVATION
EL. = 8217' � PERMANENT
WALL FACING
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75 Iegrees
VOID MUST BE 1
MAINTAINED BETWEEN �
FOUNDATION WALL AND �
DESIGN HEIGHT=DH GROUND NAIL WALL
VARIES
MAXIMUM=15' su
15 degrees -
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STRIP DRAWS SHALL BE 12—INCHES WIDE �
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PLACED 10' ON CENTER AND SHALL . � s` �v �
Ir NOT EXiEND WIiHIN 18—INCHES OF TOP OF SHOTCREfE
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SHOTCREfE � .y..,,�, _, ,_
•+� 15 degrees �� C�Z j��a .
BOTfOM OF WALL � _ �
AT BOF DAYIIGHT STRIP DRPJNS OR PIPED � � � �
WfiH 4" SCH. 40 TO OUTFALL � � � .
(SLOT 4" PIPE AND INSERT DRAW � -
STRIP AT EVERY LOCAitON) DRAWING NOT TO SCALE
Sheet Revision D�S���Fo�:
�� Yeh and Associates, Inc. Da1e Revisiou/Issue Checkedby s&Y D�u�g,��. Ground Nail Wall
Consulting Geotechnical Engineers P*oject Number: 210-158 Typical Cross Section
170 Mel Ray Road Glenwood Springs, CO 81601 ��br �J Date: ProjecC SheetNumber:
Phone: (970) 384-I500 Fax: (970) 384-1501 Checkedby: �J September 23,2010 Tap►in Residence 5 of 6
VERTICAL
BEARING BARS (2)
/5 O 6� OC, 30� LONG ': � .,
(OR EqUIVALENT) i��•`���' '"'�`>�1' SHOTCRETE FACING
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BEARING PLATE '�� '�� •''.?!•:•
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HORIZONTAL t`.,�•" � �
i BEARING BARS (2), CONTINUOUS -
i i /5 O 6" OC (OR EOUIVALENT) �'�',.�'�' '"�;.•' CENTRALIZER O MA%. 10 Ff. O.C. AND
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� � t:':'��':"-'.'��:'." .> � ,' PROVIDE CENTRALIZERS WITHIN 2 FT
� � 2 IN. (MIN.) COVER� _. ' '•'��'�'.'• � ': � A FROM THE TOP AND BOTTOM OF DRILLHOLE
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i i STEEL BAR :�:'�,;. � EPO%Y COATED /8 ALL THREAD BAR
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�_l_�_� . (MIN.)
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NESH OVERLAP __j_j_j a_ CROUND NAIL NAIL CROUT
MIN 2 GRIDS C __�_�_ _�_ �� ° DRI
I I I I SHOTCRETE OR CIP CONCRETE TOiq� NA�� BAR�.NCTH �NCTH
BEARING PL4TE
WELDED
WIRE FABRIC SHOTCRETE
♦'x1'-W4.OxW4.0 GROUND NAIL DETAIL
REINFORCEMENT
FRONT VIEW Nor ro SCALE
3" MINIMUAI CLEAR
BOREHOLE
�MIN�� SHOTCRETE FAqNG
�^ 8n-1 FIELD INSTALLED GROUT ' (MINIMUM 28-DAY COMPRESSIVE STRENCTH 4000 P51)
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g^ � a. a. �a ' ' ••• • 2 - N0. 5 VERTICAL BARS (OR EOUIVALENT)
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NAIL HOLE DIAMETER = BAR DIAMEfER + 1/4" d a a . ' " I y - N0. 5 WALER BARS (OR EQUIVALENT)
� ' BEARING PLATE ;.�.� :�• :`
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�. ' � `�'�� `� � '� � SHOTCREfE OR NAIL GROUT
EPO%Y COATED /B ALL THREAD BAR °. � 2 IN. (MIN.) COVER
BEARING PLATE � STEEL BAR WITH CENTRAIJZERS (ALL THREADBAR ONLY)
FRONT VIEW HEX NUT ,' .
GROUND NAIL CROSS ' ' � `_�-::;:;;;:.,
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SECTION A—A� NAIL GROUT
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�•�•+` �,� I (ALL T READBAR ONLY) �� �..'��N. CMlN.) . � � � .. .
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4" x 4' - W4.0 x W4.0 GEOCOMPOSITE DRAIN STRIP � '� - � � -`J
WELDED WIRE FABRIC •�. , �, SEE NOTESFOR REQUIREMENTS. l-C�-l� �'��/ �
BEARING PLATE �• ' ` � '`J` � '`
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SIDE VIEW ",.;'. .'� , ,, , ` ��z j��
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FINISHED WALL SECTION
NOT TO SCALE - �
Sheet Revision D�s���Fo�:
�� Yeh and Associates, Inc. Date Revision/Issue Checkedby B&Y Drilling,��. Ground Nail Wall Details
Project Number:
Consulting Geotechnical Engineers 210-158
170 Mel Ray Road Glenwood Springs, CO 81601 �µ'"br �J Date: Project: Sheet Number.
Phone: (970) 384-1500 Fax: (970) 384-1501 Checked by: �J September 23,2010 Taplin Residence 6 of 6
4.50'
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BUILDING SETBACK °
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MICROPILE / FOOTER / FOUNDATION WALL EXHIBIT
LOT 30, BLOCK 7
. VAIL VILIAGE, FIRST FILING
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