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RE: Runway beam[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: "'seaint(--nospam--at)seaint.org'" <seaint(--nospam--at)seaint.org>
- Subject: RE: Runway beam
- From: Ed Marshall <elmarshall(--nospam--at)HASimons.com>
- Date: Thu, 4 Feb 1999 12:32:37 -0800
The detail I seen used for many years by firms doing industrial design typically runs a 2" expansion joint through the rail by cutting it at about a 15 degree skew angle (over about 20 inches of runway length) and adding filler plates along the web to reinforce the rail. Ed Marshall, PE > -----Original Message----- > From: Stan Mulder [SMTP:seatown(--nospam--at)icon.co.za] > Sent: Thursday, February 04, 1999 3:15 PM > To: seaint(--nospam--at)seaint.org > Subject: Runway beam > > What details are suitable for overhead crawl beam expansion joints. > Usually gaps at joints should be kept as small as possible (2 mm or say > 1/8 ins) to enable the trolley wheel to pass smoothly over the joint. > Sometimes it is necessary to use a long crawl and introduce expansion > joints. Possible cutting the bottom flange at 45 degrees and reinforcing > the bottom flange. How big can this gap be (3/8 ins) ? Is there some way > of making the gap as large as 1 ins ? > > Thanks..
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