10LB15 beam designation 2

[kmead]

I'm looking at existing drawings for a building that was designed in 1957 and they have a note that all joists shall be 10LB15 which i'm assuming is a W10x15 but I'm not sure. I did a good deal of searching for this designation but couldn't come up with anything. Any help is greatly appreciated.

 

[dik]

A 10B15 was a common designation, as was an 8B10, and a 12B19... just to confirm, a couple of quick measurements will do it.

Dik

 

[kmead]

Thank you

 

[dhengr]

Kmead:
They were ‘light beams’ (LB) as in 10LB15, they became (B) beams as in 10B15, and in the late 60’s or early 70’s they were brought into the wide flange (WF or finally W) groupings. As Dik suggested measure their depth, flange width and flange thickness and you should have them pretty well identified.

 

[kmead]

Thank you both for the great information

 

[Bagman2524]

Slide Rule Era's website is a great source for old steel shape information.

http://www.slideruleera.net/

All I know is P/A and Mc/I