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RE: Bridge slide bearings

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Hi, Bill and thanks for the reply.  There are manufactured bearings for this application but thus far, the ones I've found are more elaborate and overly "heavy duty" for our relatively lightweight walkway bridges.  I designed a simple slider base that slides on uhmwpe.  I subsequently heard from a plastics manufacturer that advised to use 1700 psi maximum.  I'm still researching manufactured bearings but the project is due tomorrow so I have to get something on the drawings by today.

 

Bob Garner

 


From: Polhemus, Bill [mailto:BPolhemus(--nospam--at)wje.com]
Sent: Monday, December 19, 2005 12:52 PM
To: seaint(--nospam--at)seaint.org
Subject: RE: Bridge slide bearings

 

Aren’t there manufactured bearings of this kind that would be a better “fit” for this? In effect they’ve already done the “engineering” and you just have to make a selection?

 


From: Garner, Robert [mailto:rgarner(--nospam--at)moffattnichol.com]
Sent: Monday, December 19, 2005 2:00 PM
To: seaint(--nospam--at)seaint.org
Subject: Bridge slide bearings

 

I'm designing a walkway bridge slide bearing using a steel base plate bearing/sliding on a uhmwpe (ultra-high-molecular-weight polyethylene) sliding surface.  There is 3" of design movement.  Does anyone know what allowable bearing pressured should be used for the uhmwpe?  I have questions in to plastics manufacturers but I think they all have the holiday weeks off.

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