Historic Steel Shapes I12x31.8
Historic Steel Shapes I12x31.8
(OP)
I can not find any info for an I12x31.8. I've found a reference in an old book but know what any of the properties are! Please help
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Historic Steel Shapes I12x31.8
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RE: Historic Steel Shapes I12x31.8
American Standard Beam Section
D, Wt, S, t, Lu, V, R, G, d, b, t', r'
I12, 31.8, 36.0, 0.35, 11.5, 55, 39, 8.4, 12, 5, 0.54, 1.01
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.
RE: Historic Steel Shapes I12x31.8
http://www.aisc.org/content.aspx?id=2868
RE: Historic Steel Shapes I12x31.8
I got a Ix=218
A=9.35
d=12.00
tw=0.350
bf=5.000
tf=0.544
Does this jive with whats in your book?
RE: Historic Steel Shapes I12x31.8
Wt = 31.8 (weight of beam plf)
S = 36.0 (Section modulus)
t =0.35 (web thickness inches)
Lu = 11.5 (maximum length @ 20,000 psi with unbraced comp. flange)
V = 55 (maximum web shear in kips for 13000 psi)
R = 39 (allowable end reaction for 3.5" bearing)
G = 8.4 (increase in R for 1" additional bearing)
d = 12 (actual depth inches)
b = 5 (flange width inches)
t' = 0.54 (flange thickness inches)
r' = 1.01 (least radius of gyration)
Which appears to match your data.
Garth Dreger PE - AZ Phoenix area
As EOR's we should take the responsibility to design our structures to support the components we allow in our design per that industry standards.
RE: Historic Steel Shapes I12x31.8
RE: Historic Steel Shapes I12x31.8
BA
RE: Historic Steel Shapes I12x31.8
RE: Historic Steel Shapes I12x31.8
A = 9.26
d = 12.00
bf = 5.00
tf = .544
tw = .35
Ixx = 215.8
Sx = 36.0
rx = 4.83
Iyy = 9.5
Sy = 3.8
ry = 1.01
The values were the same in the 1934 manual too. Do you have any idea of the year of construction?
Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
RE: Historic Steel Shapes I12x31.8
Dik