Thank you Ed and Bobby for your feedback.
The problem is that the Mechanical Engineer used a generic spec and details
for all trades. His response was that the contract drawings show this because
the joist manufacture will void the warranty if we hang further than 6" from
the panel points. We have approved plans from the Architect and Engineers
showing the branch lines hung from the top cord and not the panel points of the
top cord so we will ask for a change order. We also have a phone conversation
report showing that the Structural Engineer had no issue with our branch line
hanger detail.
The lesson for us is to exclude this in our bids.
Matt
-----Original Message-----
Actually, right now I'm designing a very similar store and in the specs and
details it says the same thing in reference to all piping. We have
installed many and they have never enforced the branch line piping. However I
have noticed in some stores Like Wally world the branchlines are run at
those locations and where the head spacing did not work out they had short
armovers for those particular uprights. Bad thing is I'm having a time
just getting bottom chord sizing for bar joist and girders, I can only imagine
trying to get webbing layouts. I'm interested to know how it turns out.
Good
luck.
Bobby Gillett
Designer
[EMAIL PROTECTED]
(731)-424-0130
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