Historical shape - "BG" series
Historical shape - "BG" series
(OP)
Is anyone familiar with the "BG" designation for steel shapes? I have a building constructed cca 1930 that is using this shape, 24" BG 148 in particular. I have not found such a shape in the AISC Historical Shapes Database v13.1.
Thanks!
Thanks!






RE: Historical shape - "BG" series
http://www.slideruleera.net/contributions.html
Page 48 shows only one 24" beam @ 148 lb/ft, G24a, from Bethlehem catalogs S27 & S30.
Download the S27 Bethlehem catalog (I have it listed as 1928 version) from this page:
http://www.slideruleera.net/miscellaneous.html
Page 71 calls G24a a "Girder Beam".
The Engineer who prepared your plans probably wanted to make it clear that the 148 lb/ft beam was manufactured by Bethlehem (the letter "B" was the common designation at that time for Bethlehem). I have seen the manufacturer's abbreviation used along with the beam designation, similar to "BG" that you have.
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RE: Historical shape - "BG" series
I must say, if you were in my office, I'd buy you lunch! Excellent reply, much better what AISC had told me (zip).
I like your collection of engineering references, definitelly bookmarked the site. Thanks again.
Adam U.
RE: Historical shape - "BG" series
RE: Historical shape - "BG" series
RE: Historical shape - "BG" series