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nooredin
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Join Date: Nov 2007
Posts: 1

Overhead Crane

11/13/2007 6:59 AM

in manufacturing the bridge of overhead crane, how do you prestress the web before welding?
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PWSlack
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#1

Re: overhead crane

11/13/2007 7:02 AM

In the same way as prestressed concrete is made - stretch it, surely?

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Anonymous Poster
#2

Re: Overhead Crane

11/14/2007 7:04 AM

Place beams perpendicular to the bridge, one at each end and brace. A''''''''''''''A Depending on the length of the perpendicular beams, will determine your leverage and overall stress on the bridge when pulling the two perpendiculars together with cable and say a large turnbuckle.

Ross KC7RJK
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