HomeMy WebLinkAboutB14-0390 Engineers letter J.R. HARRIS & COMPANY
STRUCTURAL ENGINEERS
1775 Sherman Street, Ste. 2000, Denver, CO 80203
303/860-9021 Fax 303/860-9537
November 12, 2015 JRH Project#2737.03
Town of Vail
1309 Elkhorn Drive
Vail, Colorado 8]657
Attn. Randy Guzik
RE: Status of Tee Stem Supplementary Support
Vail Transportation Center
Vail, CO
References:
1. Drawing S 1, Tee Stem Supplementary Support, 6/9/2015.
2. Construction Observation Report, prepared by J.R. Harris & Company for Town of Vail,
10/6/2015.
Dear Mr. Guzik,
Based on my site observations, subsequent inspection and photo-documentation by you, and
discussions with you, I attest that the work described by the referenced drawings appears to have
been substantially completed and is in general conformance with the intent of the design drawing.
Please call if there are any questions.
Very truly yours,
J. R. HARRIS & COMPANY
� �• -
Frederick R. Rutz, PE, PhD
Attachment: Construction Observation Report, 10/6/2015
James Robert Harris,P.E.,S.E.,Ph.D.,NAE Gene R.Stevens,P.E.,S.E. G.Brent Norris,P.E.
Frederick R.Rutz, P.E.,Ph.D. Kenneth W.Cobb,P.E.,S.E. Donald C.Carroll,P.E.
J.R. HARRIS & COMPANY
STRUCTURAL ENGINEERS
VTC —Tee Stem Supplementary Support Oct. 6, 2015
Construction Observation Report Page 1 of 2
CONSTRUCTION OBSERVATION REPORT --
�
Date: Oct. 6, 2015 f
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Project: VTC—Tee Stem Supplementary Support � � �
Job No: 2737.03
Client: Town of Vail � � ;��
Conditions: Clear, 60 F �- �kn,�� ��
Report by: Fred Rutz � �' �,�
Present: Fred Rutz, J.R. Harris & Company , � �'
Randy Guzik, Town of Vail �
Distribution: John King, Town of Vail
Randy Guzik, Town of Vail
STATUS:
The structural steel has been erected.
OBSERVATIONS:
1. The structural stee] was in place. The cope in the top flanges at the east end of the
channels was not made because there was sufficient clearance to install the bearing pad,
shims, and plate without the necessity of making the cope.
Comment: This is acceptable.
2. Detail4/S 1: Shims had been installed instead of grouting with high-strength dry-pack.
One of the shims was loose.
Action: Tack-weld the shims in place. Dry-pack the remainder of the space above the
HSS 4x2 with high strength grout.
3. Detail5/S 1: The 2" diameter rod did not have double nuts on both sides.
Action: Install double nuts.
4. Detail 3/S 1, south side only: There was a gap of appx. 1/8"between the top of the shim
stack and the bottom of the Masticord pad, resulting in an uneven distribution of load
between the two main channels.
Action: Fabricate a tapered shim, 7"wide x 7"long and appX. 1/8"thick at the thick end
tapering to near zero 7" away from the thick end. Drive the tapered shim into the gap
between the existing shim stack and the pad.
Comment: the purpose is to distribute the load as evenly as possible to both channels.
J.R. HARRIS & COMPANY
STRUCTURAL ENGINEERS
VTC —Tee Stem Supplementary Support Oct. 6, 2015
Construction Observation Report Page 2 of 2
5. The '/z x '/z keeper bar on the north side appeared too short to retain the pad.
Action: Change it to a larger keeper bar that is sufficiently high to retain the pad, or add
another 1/2X1/2 keeper bar on top of the existing one. Add tack weld from keeper bar to
plate at each end of bar.
6. The core drilled hole was changed from 2.25" diameter to 2.5" diameter.
Comment: This is acceptable.
7. Randy reported that there was no grout installed around the 2" diameter rod.
Action: Grout is required. We recammend drilling a small hole through each steel
channels just above the bolt, such that the hole goes into the '/z" space above the bolt.
Inject grout by pumping it into the hole until it comes out the other hole on the opposite
side. Use neat cement grout per the notes on the design drawing. Keep traffic off the tee
above until grout sets.
Comment: Use of a rapid-setting cement in the grout will help to minimize the "no
traffic" time.
Comment: We are open to other suggestions for injecting grout;please submit any other
suggestions for review.
Submitted by,
J.R. Harris & Company
� �rt
Frederick R. Rutz, P.E.
Principal