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Re: Sleeve through footing

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Typically, the sleeve passes through (& is supported by) the formwork.
Chuck Utzman,P.E.

Bill Allen wrote:

Sure. However, not knowing anything more than I know now, this is a non-engineered solution, which is O.K. if the problem is solved.

Regardless of the strength of Styrofoam, it will still transfer the weight of the wet concrete to the PVC pipe. Is that O.K.? I have no idea. I don't know how much load PVC pipe can take.

I don't know the compressibility of Styrofoam, so I don't know how think of a section to specify. I do know that if the section I specify compresses too far, then the stiffness goes up significantly.

The sleeve idea takes the load entirely off the PVC pipe. I like the idea of hose clamps and/or duct tape. It could be a PVC sleeve for all I care as long as the drain line can be repaired and replaced. The only problem I see with the sleeve (as others have pointed out) is the problem of locating the sleeve concentric with the pipe.

I'm not trying to make a simple problem complicated, but I do want to achieve the intended goal.

T. William (Bill) Allen, S.E.


Consulting Structural Engineers
V (949) 248-8588 • F(949) 209-2509

-----Original Message-----
*From:* Tom.Hunt(--nospam--at) [mailto:Tom.Hunt(--nospam--at)]
*Sent:* Thursday, April 30, 2009 12:06 PM
*To:* seaint(--nospam--at)
*Subject:* Re: Sleeve through footing


Couldn't you just use some Styrofoam pipe insulation from Home Depot that is already split and just slides on over the pipe. It is stiff enough to act as a form for the concrete but pliable enough to provide limited movement.

Thomas Hunt


*"Bill Allen" <t.w.allen(--nospam--at)>*
04/30/2009 09:10 AM
Please respond to seaint




"Seaint" <seaint(--nospam--at)>





Sleeve through footing


I have an existing pipe running through a proposed footing.

What is a good means to sleeve the pipe?

Thank you,

T. William (Bill) Allen, S.E.
Consulting Structural Engineers
V (949) 248-8588 • F(949) 209-2509

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