1916 structural steel
1916 structural steel
(OP)
We will be checking some existing steel I beams and channels for a building in Chicago area built in 1916 for 2-3" of additional light weight topping. From the historical steel area it appears that Fy used was likely 24 ksi. The beams are fully braced. I am trying to figure out if I need to use the green book or the black book for steel check. I don't know what allowable Fb would they have used back then, 0.66 max may be?






RE: 1916 structural steel
BA
RE: 1916 structural steel
Dik
RE: 1916 structural steel
If I got paid for every hour I worked, I'd be a wealthy man.
RE: 1916 structural steel
Dik
RE: 1916 structural steel
a7x: The applicable code is the black book, so even though green book might give me more conservative results, but since black is the current code and I'll use that.
dik: great point on the welding issue.
RE: 1916 structural steel
As a side note here, and I never noticed it before, on pages 284 through 286 of the same AISC code, it gives the standard timber beam/column allowable stresses and dressed sizes for the time... Odd, but it is there in the steel code...
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com