Das, 2nd ed. There is the Boussinesq equation (pg 171) that calculates
the increase in vertical stress from a surcharge, point load or areal
loading. I have seen this equation in other textbooks.
> ----- Original Message ----- From: "Gary L. Hodgson and Assoc."
> <ghodgson@bellnet.ca>
> To: <seaint@seaint.org>
> Sent: Tuesday, August 28, 2007 6:00 AM
> Subject: Re: Another Reference needed
>
>
>> I am hoping I can jump on the band wagon here. (That is not a very
>> gooood analogy). I am looking for a reference on the effect of higher
>> footings close to existing footings. One of my customers is supplying
>> a 5 ton crane and runway to be installed in an existing building. The
>> engineer for the building owner is insisting that the runway columns
>> be placed midway between the existing columns so as to avoid any
>> super-imposition of loads on to existing footings. My customer is
>> stating, with my support, that the bearing pressure from the new
>> crane column is reduced considerably (with a large column bearing
>> plate) by the time the additional pressure reaches the underside of
>> the existing footings (here all footings exposed to freezing have to
>> be at least 4 ft below grade. The building owner is on my customer's
>> side in this dispute-he does not want more columns fouling up his
>> floor space. I feel comfortable with what we are proposing but I want
>> to be able to quote some references on this topic. Any help would be
>> appreciated and thanks in advance for your trouble.
>> Gary Hodgson
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