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Re: Steel Casing Pipe Joint Welds

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How much credit is the contractor willing to give the agency/owner to
approve this change?
It should be significant % of the total bid.

Stan Scholl, P.E.
Laguna Beach, CA

On Tue, 3 Jun 03 09:51:29 -0500 Christopher Wright <chrisw(--nospam--at)skypoint.com>
writes:
> >The Contractor would like to know whether it can be single bevel.
> It can be, but there'll be more distortion, and if he's looking to 
> avoid 
> welding from both sides, the inside of the pipe won't be smooth or 
> finished, and you may run into corrosion or erosion problems down 
> the 
> line. Double bevel means that the ID and the OD of the pipe is 
> grooved 
> and the weld is made from both sides; single bevel usually refers to 
> a 
> weld that is made from one side only. It may be more convenient to 
> make 
> the joint from one side, but you'll use more weld metal and get more 
> 
> distortion in addition to having an unfinished root opening. With 
> material that thick I think the double welded detail is better.
> 
> There is no standard for this--AWS makes no particular judgement 
> about 
> the selection of a single or double groove detail since this it 
> depends 
> on specific circumstances. 
> 
> Christopher Wright P.E.    |"They couldn't hit an elephant at
> chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
> ___________________________| John Sedgwick, Spotsylvania 1864)
> http://www.skypoint.com/~chrisw
> 
> 
> 
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