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Re: Protection of Drain Pipe Under Mat Foundation

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Yeah, don't forget the time history analysis... :-)


On Thu, May 29, 2008 at 1:10 PM, Bill Allen <t.w.allen(--nospam--at)> wrote:

Gerard –


That's funny.


Are you referring to my Q=P(1+6e/L)/(W*L) model?


Soil supports? I don't need no stinking soil supports!

:o) :o)


If so, I guess I could change it to:


Q= P(1+6e/L)/(W*L')

Where L' is less than L by the ineffective with of mat in contact with the soil due to the pipe (say 12"-15" or so).




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


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

-----Original Message-----
From: Gerard Madden, SE [mailto:gmse4603(--nospam--at)]
Thursday, May 29, 2008 12:00 PM

Subject: Re: Protection of Drain Pipe Under Mat Foundation


In your mat foundation model, you may want to remove the soil supports