A question regarding USA 1975 snow load cases...
A question regarding USA 1975 snow load cases...
(OP)
A "pre-eng" steel building was designed in 1975. The National Building Code of Canada indicates the snow load cases that need to be considered. The designer of the building was in the U.S. at the time. Is there a possibility that anyone might be able to help me in determining what snow load cases (including unbalanced loading) were required to be considered at that time ? (i.e. 1975 U.S. code).
I am not refering to specific snow load values here ...all I need to know is was the unbalanced snow load to be 100% load on one roof section and 50% on the remainder?
Does it depend on the state ?
Thanks once again,
cva1993
I am not refering to specific snow load values here ...all I need to know is was the unbalanced snow load to be 100% load on one roof section and 50% on the remainder?
Does it depend on the state ?
Thanks once again,
cva1993






RE: A question regarding USA 1975 snow load cases...
(My apologies for posting the question....I just thought that at least one person may be able to help me...)
thanks ,
cva1993
RE: A question regarding USA 1975 snow load cases...
Snow loads full or unbalanced shall be considered in place of loads set forth in Table No. 23-B, where such loading will result in larger members or connections.
Potential accumulation of snow at valleys, parapets, roof structures, and offsets in roofs of uneven configuration shall be considered. Where snow loads occur, the snow loads shall be determined by the Building Official."
It goes on to offer a reduction in snow for high pitched roofs....but that's all that is in the code.
RE: A question regarding USA 1975 snow load cases...
cva1993
RE: A question regarding USA 1975 snow load cases...
If the specific job is not available, they usually would know the codes.
RE: A question regarding USA 1975 snow load cases...
The building manufacturer IS still active in manufacturing pre-eng. buildings, but is not returning our calls. I think they've clued in that our questioning of the original design MAY fault them........
Why the building is currently under review is a long story...I'd rather focus on the unbalanced snow load requirements at the time.
But thanks for the suggestion anyway...
cva1993