RE: Surface Roughness of GRP pipe

From: <Sharaf>
Date: Sat Apr 21 2001 - 01:32:00 EDT

Thank You.

Sharaf

-----Original Message-----
From: Neil Stone [mailto:jnstone@MNSi.net] Sent: Thursday, April 19, 2001 4:11 PM
To: <a href="/group/PipingDesign/post?postID=VMcF3YEB-HjArn8tsezibNQPSEUP7QwWI_N4j0ByWNKa3k6_i8a3LY5HbTKeZDAimKKKKUGnAy8cpG91t5c_GO5mgexmPhM">PipingDesign@yahoogroups.com</a> Subject: Re: [PipingDesign] Surface Roughness of GRP pipe

According to two major FRP (GRP) piping makers, the absolute roughness of new pipe is 0.00021 inches (Manning coeff of 0.009, Hazen-Williams C of 150).

I am not aware of any data on old GRP pipe.

Neil Stone

At 12:41 PM 4/18/2001 +0000, you wrote:
>Hello group,
>
>Does anyone know what is the typical surface roughness (for friction
>factor calculations) of new and old GRP pipe?
>
>Another small question, why can't list members access the archives of
>this group?
>
>Regards,
>
>Sharaf F. Al-Sharif

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Your use of Yahoo! Groups is subject to <a href="http://docs.yahoo.com/info/terms/">http://docs.yahoo.com/info/terms/</a> Received on Sat Apr 21 01:32:00 2001