1/3 stress increase
1/3 stress increase
(OP)
Does the allowable stress increase of 1/3 for wind loads apply to a steel structure built in 1930?? We only have a steel manual as far back as 1950, and the 1/3 increase is permitted then.
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
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RE: 1/3 stress increase
This may help for your specific question:
http://ww
RE: 1/3 stress increase
That said, this doesn't mean that an old structure designed under an old code must, in all circumstances, be brought up to the current code. Most jurisdictions I've worked with (in the US) allow for a grandfather provision where you don't have to upgrade anything unless you perform 20% or more renovation work on the building (cost of renovation = 20% or more of the value of the building).
I think the concept of the 1/3 stress increase is quite old though, to answer your question. 1930 wouldn't surprise me if it used it.
RE: 1/3 stress increase
RE: 1/3 stress increase
RE: 1/3 stress increase
RE: 1/3 stress increase
RE: 1/3 stress increase