1957 steel beam strength??

[paullaup]

I have an old building to evaluate. Anyone know what was the strength of steel they used in 1957. I usually take an allowable of 20ksi, but I'm fairly close to the limit. Anyone??

 

[Taro]

Per AISC Iron & Steel Beams 1873-1952 and FEMA 356, yield strength not less than 33 ksi. Allowable tensile stress of 20 ksi.

 

[ChipB]

Fifth Edition, Manual of Steel Construction, 16th printing (1954)

20ksi for bending, 13 ksi for shear

 

[rlflower]

Fifth edition, AISC Manual of Steel Construction, Fifth printing (1948)

20 ksi bending, 13 ksi shear