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6I12.5 Steel section?

6I12.5 Steel section?

6I12.5 Steel section?

(OP)
I am looking at a section on a building designed in Baltimore in 1963. Is this steel and where could I find the section properties? In addition the slotted bolt holes in the flange for a 1/2" bolt are 5/8"x1 1/2" which is more than ASD Table J 3.1 allowances of 9/16"x1 1/4". How does ths affect the capacity of the slip critical joint?

Thanks

Loay Abdelkarim

RE: 6I12.5 Steel section?

Take a look at S6 x 12.5, this would be a standard "I" beam, possibly a design firm used this designation vice the standard callout. Same reasoning for the oversize, which should not have much effect on the slip critical joint, though it will be a little sloppy on fit.

RE: 6I12.5 Steel section?

If you can get you hands on a Bethlehem Structural Shapes Book, the S612.5 is detailed in the Standard Sections for I-Beams.

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