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Steel section properties[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: Steel section properties
- From: "Roger Davis" <sds(--nospam--at)sdsarch.com>
- Date: Fri, 23 Oct 1998 07:27:49 -0500
IN RESPONSE TO : Robert Rollo I have a building circa 1940 (toilet tank) with a colum and beam that i can not locate section properties on. Beam is 24inch deep, flange width approx 7.5-7.75 inches, thickness approx 0.5-0.75. Column is 8 inch deep, 8.125 flange width, with about 1/4 to 5/16 flange thickness. I think column is 8x8 (31lb), beam is big question mark. This beam does not fit the American standard nor WF profiles in a 5th edition AISC manual. Does it fit anything from the 3rd or 4th edition closer? I CHECKED AN AISC PUBLICATION ENTITLED "IRON AND STEEL BEAMS, 1873 TO 1952. THE CLOSEST MATCH I FOUND TO YOUR BEAM WAS PRODUCED BY CARNEGIE - ILLINOIS STEEL CORPORATION. THIS DATA ORIGINALLY CAME FROM CARNEGIE'S 1934 CATALOG. DEPTH = 24, FLANGE WIDTH = 7.54, W = 100 PLF, A = 29.42, WEB t = .68, FLANGE t AT TOE OF FILLET = 1.24, FLANGE t AT EDGE OF FLANGE = .64, SLOPE INSIDE FLANGE = 16.6%, Ix= 2497.3, Sx= 208.1, r(x) = 9.21, Iy = 57.53, Sy = 15.3 r(y) = 1.40 STRUCTURAL STEEL MINIMUM YIELD = 33000, RIVET STEEL MINIMUM YIELD = 28000, AISC ALLOWABLE STRESS = 20000. I DID NOT FIND AN 8" X 8" COLUMN WITH A FLANGE AS THIN AS YOURS. THE 4TH EDITION OF AISC HAS THREE 8" X 8" COLUMNS ALL HAVE A MEAN FLANGE THICKNESS OF 7/16" IF I CAN BE OF MORE HELP PLEASE CONTACT ME DIRECTLY WITH "ROGER" AS YOUR SUBJECT MATTER. Roger Davis Architect SDS Architects, Inc.
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