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Pole Foundation Embedment[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: Pole Foundation Embedment
- From: RajSTC(--nospam--at)aol.com
- Date: Tue, 9 Nov 1999 14:18:24 EST
I have difficulty in interpreting pole foundation embedment formula given in UBC. Required depth, d, of embedment is a function of S1, which is defined as "Allowable lateral soil bearing pressure as set forth in Table 29-B, based on a depth of one-third the depth of embedment." Is it, therefore, correct to say that, S1=Allowable Lateral Bearing X (Depth of embedment)/3? Also, would it not be prudent to discount the frost depth in this calculation? One of the footnotes to table 29-B, states that the lateral bearing value "may be increased the amount of the designated value for each additional depth to a maximum of 15 times the designated value." So, if d=10 feet in clayey soil, is the lateral bearing equal to 1000 psf/ft depth of embedment or should it be an average value of (100+1000)/2 = 550 psf/ft depth of embedment? Taking advantage of this footnote will make the solution iterative, because while 'd' is dependent on S1, S1 itself becomes a function of 'd'. Any comments? Thanks. Raj.
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