Cost Comparison (Steel) question
Cost Comparison (Steel) question
(OP)
Steel framed building - typical bay size is 20'x20'.
Which is more economical for a roof framing system-
A. 1 1/2" roof deck on W10x12 at 6'-8" o.c.
B. 3" roof deck on W12x14 at 10'-0" o.c.
I think the 3" roof deck would be a better solution, even though 3" roof deck would cost more. You have fewer beams, (even though they are slightly heavier), fewer connections. Heavier roof deck would take more labor to install, but I'd imagine that would be at least offset by installing fewer beams.
Anyone have any thoughts or similar experience?
Thanks.
Which is more economical for a roof framing system-
A. 1 1/2" roof deck on W10x12 at 6'-8" o.c.
B. 3" roof deck on W12x14 at 10'-0" o.c.
I think the 3" roof deck would be a better solution, even though 3" roof deck would cost more. You have fewer beams, (even though they are slightly heavier), fewer connections. Heavier roof deck would take more labor to install, but I'd imagine that would be at least offset by installing fewer beams.
Anyone have any thoughts or similar experience?
Thanks.






RE: Cost Comparison (Steel) question
I posed a very similiar question to a fabricator and erector (teamed up for a design build project) one time. 30' x 42' bays, with eithier beams at 10' spacing and 3" deck, or beams at 6' with 1 1/2" deck.
Their response was that the costs would be virtually identical @ approximately $5.00/SF
However, substituting open-web joists for the beams reduces the cost to about $4.00/SF.
Obviously, those costs are very project specific, and may not be representative of your situation, but it does give an idea of the magintude of savings that can be realized from using joists.
RE: Cost Comparison (Steel) question
RE: Cost Comparison (Steel) question
Dik