RE: Shoes for Plastic Pipe

From: <Steve>
Date: Wed Jun 18 2003 - 17:45:00 EDT

Hi Thomas

Is your question one of aesthetics; it looks better if the pipes are all at the same height. If so then you need only to make 3.5" or 4" packers from channel or angle and fasten the pipe as you originally planned. If the 3.5" shoes on the steel pipe are for insulation standoff, then the pipes will look OK without packers as the bottom of the PVC pipe will be about the same level as the insulation cladding.
For long runs of plastic pipe I normally place it on heavy duty gal steel cable ladder. It can span 20' but provides almost continuous support to the plastic.

Cheers

Steve McKenzie

-----Original Message-----
From: Thomas Laupa [mailto:tlaupa@frii.com] Sent: Thursday, June 19, 2003 1:23 AM
To: PipingDesign@yahoogroups.com
Subject: Re: [PipingDesign] Shoes for Plastic Pipe

Paul:

No concerns over abrasion, just an oversite.

At 09:23 AM 6/18/2003 -0400, you wrote:
>Why are you concerned about the two PVC lines being at a different B.O.P.
>(Bottom of Pipe - invert elevation is generally used for buried lines and
>refer to sloped piping) elevation? Abrasion?
>
>Paul
>
>
>----- Original Message -----
>From: "Thomas Laupa" <tlaupa@frii.com>
>To: <PipingDesign@yahoogroups.com>
>Sent: Wednesday, June 18, 2003 8:49 AM
>Subject: [PipingDesign] Shoes for Plastic Pipe
>
>
> >
> > >Gents:
> >
> > Can anyone suggest a method of supporting PVC pipe in a rack designed
for
> > steel pipe?
> >
> > We are installing a pipe rack to support several 4" and 6" steel lines,
> > uninsulated. One end of the rack will support two 4" PVC pipes. We
> > originally designed the pipe so that all invert elevations were the
same,
> > but we forgot that we would have 3-1/2" shoes on the steel pipe.
> >
> > Would you suggest: 1) lowering the invert elevation of the PVC pipe to
> > rest directly on the pipe rack? or 2) fabricate some sort of shoe for
the
> > PVC pipe?
>
>
>
>
>===========================================================================

---

>Discussion List sponsor: The fluid flow calculations website -
>www.LMNOeng.com - LMNO Engineering, Research, and Software, Ltd.
>===========================================================================

---

>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/

Thomas G Laupa PE
Senior Engineer - Ondeo Nalco Applied Services Office Address: One Ondeo Nalco Center, Naperville, IL, 60563 Courier Address: 1003 Remington, Fort Collins, CO, 80524 970-227-5127
800-493-5009 fax

---

---

Discussion List sponsor: The fluid flow calculations website - www.LMNOeng.com - LMNO Engineering, Research, and Software, Ltd.

---

---

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ Received on Wed Jun 18 17:45:00 2003