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AISC's Metric equiv. of HSS
[Subject Prev][Subject Next][Thread Prev][Thread Next]- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: AISC's Metric equiv. of HSS
- From: "Sherman, William" <ShermanWC(--nospam--at)cdm.com>
- Date: Tue, 21 Mar 2000 12:51:16 -0500
Charlie, do you have a "quick trick" to convert hollow structural shapes (HSS) from US Customary to Metric? One of our engineers called AISC and was told to do a precise conversion and call out to decimal millimeters, eg HSS 8x6 becomes HSS 203.2x152.4 (using 25.4 mm/inch). This seems overly precise to me. -----Original Message----- From: Charlie Carter [mailto:carter(--nospam--at)aiscmail.com] Sent: Tuesday, March 21, 2000 10:37 AM To: 'seaint(--nospam--at)seaint.org' Subject: RE: AISC's Metric equiv. of WT13.5X51 The Metric Conversion of the AISC LRFD Manual of Steel Construction, 2nd Edition lists all shapes as far as how they correspond between the U.S. Customary and Metric series correspond. So does ASTM A6/A6M. If you don't have either of those documents handy, here's a quick trick to get a close estimate (often the exact listing) of the metric equivalent of any U.S. W-shape in ASTM A6/A6M. Take the nominal depth, multiply it by 25 and round the resulting number to an increment of 10. Then take the lbs. per ft, multiply it by 1.5 and round the resulting number to the nearest increment of 1. For example, with a W21x44: 21 x 25 = 530 44 x 1.5 = 66 So a W21x44 in the U.S. customary series is a W530x66 in the metric series (see ASTM A6/A6M). You can apply the same process to any other shape, too. Just keep use the right factor for the units of measure. Also, rounding may be different, but you get the idea. Charlie
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