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Re: Pipe Racks

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Joe,

	Be very careful about anchoring piping to a pipe rack.

	The type of piping I am usually involved with (petrochemical process
piping) is usually used at significant temperatures and, therefore moves
about relative to the rack (thereby applying significant friction
loading).  Pipe anchors and guides are located where the pipe stress
specialists specify and are designed for their specified loads; at other
vertical support locations the piping is free to slide.  Any attempt to
connect the pipe to the rack without a full analysis of the piping
system itself could seriously overstress the piping, possibly with
catastrophic results.

	Your piping may not fall into a critical category like this but it's
best to think about it anyway.

	A further word of caution: building codes commonly emphasize public
safety with less concern for the value of capital assets, therefore, you
may want to consider using a higher importance factor, or otherwise
design conservatively if the cost of so doing is small relative to the
value of the asset protected.

				Regards,

				H. Daryl Richardson

Jnapd(--nospam--at)aol.com wrote:
> 
> Does anyone know of sections in the UMC and or UPC concerning seismic
> anchoring of 4" pvc and steel pipe on an elvated pipe rack.  This elevated
> pipe rack spans on supports between buildings.  I have been contracted to
> seicmically strengthen the column supports.
> 
> Joe Ventui
> 
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