HomeMy WebLinkAbout18-7-289 (08-14-18) Thunder Mtn Testing Ltr.pdf (Y- 7- z2'
THUNDER MOUNTAIN TESTING
2970 N. Ronlin Avenue / Grand Junction, Colorado 81504
Office (970) 256-9965 / Cell (970) 210-7008 /Fax (970) 314-7067
E-Mail: kxkid39@aol.com /www.thundermountaintesting.com
H. P. Kumar August 14,2018
5020 County Road 154
Glenwood Springs,CO 81601
ATTN: Mr. Steven L. Pawlak,P.E.
RE: Wilson Residence Permit#B18-0132
1965 Sunburst Drive
Vail, CO 81658
*Field Inspection
Dear Mr. Pawlak,
As requested, structural steel special inspection was conducted per the IBC 2015
Edition- Chapter 17: Structural Tests and Special Inspection and the Town of Vail
requirements. I arrived at the job site at the above referenced address at 10:30 AM. I met
with Mr. Mark Jones with Evans Chaffee Construction Group to review the material to be
inspected and project requirements. Mr. Jones informed me that Custom Structural Steel,
Inc. (CSS)of Silt Colorado was the steel fabricator responsible for installing the items of
inspection.The welding procedure specifications (WPS)and welder qualification test
reports(WQTR)for shop and field welders with CSS were reviewed previously and all
were observed to be acceptable with project requirements. Copies of the referenced
documents are on file with Mr.Bruce Collins with CSS.The drawings utilized for
inspection were structural drawings S1.0, S2.1,and S2.2. Drawing S1.0: Item 8 requires
"snug tight"tensioning of all ASTM A325N fasteners. S2.1 was utilized for inspection at
the Lower Level of the structure and S2.2 was utilized for inspection of the Ground Floor.
The above referenced drawings were prepared by Sipes Architects: Project Number
11108 dated April 11, 2018.Additionally,please refer to the attached E-Mail
correspondence from Mr. Michael Strumph,P.E.dated August 15,2018: 10:46 AM
accepting the deviation from ultrasonic testing to visual inspection requirements stated in
the AISC 360 Code for complete joint penetration(CJP)groove welded connections for
the East Wall Moment Frame connection referenced on Sheet S4.0: Detail 4.
Visual welding inspection was conducted on all shop and field welds that were
visible for inspection.The areas of inspection were at grid locations 7—beyond 8 &E—
G.2 and also 5 &C.9—G at the Lower Level. At the Ground Floor level,the areas of
inspection were 5 &C.9—G and 1.5 &D.8—F.3. Approximately half of the welding
that requires inspection has been obscured from view by installed building materials
from other trades. A statement of acceptance by the project engineer of record,Mr.
PAGE 2
Michael Strumph,P E. with Monroe and Newell Engineers,Inc.shall be required
prior to acceptance by Thunder Mountain Testing. The referenced fillet welds on the
items visible for inspection were observed to be in compliance with project specifications
and the visual requirements stated in Clause 6 of AWS D1.1 Code: 2015 Edition.
High strength bolting inspection was conducted at the above referenced grid
locations and floor levels.All bolting was comprised of 3/4"ASTM A325 twist off type
tension control bolts each fitted with a heavy hex nut and a hardened flat washer at the
bearing face of the nut.At the Lower Level, I observed that one bolted connection lacked
evidence of tensioning to project requirements. Mr. Joe Soderstrom with CSS verified
tensioning to"snug-tight"conditions under my observation. After the referenced
verification,the above referenced bolting was observed to be in compliance with the
requirements of the American Institute of Steel Construction(AISC)Research Council on
Bolted Connections(RCBC)and project specifications.
Respectfully Submitted, Reviewed by,
William K. Burgin Scott L. Maxwell
AWS CWI#11120021 AWS CWI#91040201
Thunder Mountain Testing ICC Certified#0863569-S1 & S2
ASNT NDT Level III#30242
Thunder Mountain Testing
Fwd: Welding inspection Page 1 of 1
From:Mark Jones<mjones@evanschaffee.com>
To:dyoung<dyoung@kumarusa.com>
Cc: kxkid39<kxkid39@aoLcom>
Subject: Fwd:Welding inspection
Date: Wed,Aug 15.2018 10:46 am
David,
The structural engineer has ok'ed the visual inspection of the welds on the east wall of the Wilson
project.
Mark J.
Evans Chaffee Group
Sent from my iPad
Begin forwarded message:
From: Michael Strumph <mstrumph'd monroe-newell.com>
Date: August 15,2018 at 9:42:28 AM MDT
To: Mark Jones<mjonestir evanschaffee.com>
Cc: Brian Sipes <brian@sipesarchitects.com>
Subject: Welding inspection
Mark,
Visual inspections for the field welded connections on the east wall moment frame(section
4/54.0)are structurally acceptable.
Thanks,
Michael Strumph P.E.
Monroe & Newell Engineers, Inc.
mstrumph@monroe-newell.com
Avon Office:970-949-7768 x106
https://mail.aol.com/webmail-std/en-us/PrintMessage 8/23/2018