CF-TownC CHC-CS 860203 ARCHITECTURE
PLANNING · INTERIORS
MEMORANDUM
TO: David Mitchell
DATE: February 3, 1986
FROM: Michael Henjum
RE: Coppell Town Center
Proj. No. 8457
Enclosed is a letter from Vulcraft addressing our questions
about their joists.
Sincerely,
Michael Henjum
MH/mvl
Enclosure
~cc: Rick Bertani
Ed Powell - City of Coppellb-~
2850 Lincoln Plaza · 500 North Akard · LB 16 · Dallas, Texas 75201-3394 · (214) 954-3100
McKinney Place · 3131 McKinney Avenue · Suite 850 - LB 113 · Dallas, Texas 75204 · (214) 871-9100
' VULCRAFT/ ;!
A Dlvlllon of NUCOR Corpor&llon \
Post Offloe Box 186 Grapeland, Texas 75844 Telephone 40g/687-4865
January 30, 1986'
O'Brien, O'Brien, & Callaway
3131 McKinne Ave.
Ste 850
Dallas, Texas 75204 Attn: Mr. Mike Henjum
RE: Coppell Town Ctr. @ Coppell, TX
Our File #35-5-363
Gentlemen:
On'~Janaury 21~ I visited the jobsite on the above referenced project to
investigate reported problems with some of the joist bearing seats. I
was told that some seats were deforming or even "failing".
The main areas of concern were at perimeters of the second floor framing
where extended joist ends were exposed to view. At the extreme end, the
seat angle did not align with the top chord which suggested that the seat
would not work as designed. Also, under dead loading, some of the bearing
seats distorted somewhat raising concern as to potential failure.
Further inspection revealed that the misalignment occurred only at the
very end of the extensions (which extended well beyond the supporting
beam) whereas directly over the beam, the member alignment was good. I
explained that the misalignment at the end of the joist was simply due to
the shearing process used in fabrication and because it did not occur over the
support would have no detrimental affect on the joist itself. The slight
distortion of the seat angles under dead load is quite normal and is no
indication of impending overstress or failure.
In light of my inspection, I can therefore certify that the open web steel
joists on this project are structurally sound and are fully capable of
sustaining their respective design loads.
Cordially,
P.J. Moran
DESIGN ENGINEER
PJM: lm
cc: Ryan Steel
RECEIVED
FEB 0 3 1986