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1957 steel beam strength??
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??

per aisc iron & steel beams 1873-1952 and fema 356, yield strength not less than 33 ksi. allowable tensile stress of 20 ksi.
fifth edition, manual of steel construction, 16th printing (1954)
20ksi for bending, 13 ksi for shear
fifth edition, aisc manual of steel construction, fifth printing (1948)
20 ksi bending, 13 ksi shear

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2009-09-06, 10:43 PM	#1
huangyhg 超级版主注册日期: 04-03 帖子: 18592 精华: 36 现金: 249466 标准币资产: 1080358888 标准币	1957 steel beam strength 1957 steel beam strength?? 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?? per aisc iron & steel beams 1873-1952 and fema 356, yield strength not less than 33 ksi. allowable tensile stress of 20 ksi. fifth edition, manual of steel construction, 16th printing (1954) 20ksi for bending, 13 ksi for shear fifth edition, aisc manual of steel construction, fifth printing (1948) 20 ksi bending, 13 ksi shear __________________ 借用达朗贝尔的名言：前进吧，你会得到信心! [url="http://www.dimcax.com"]几何尺寸与公差标准[/url]