Need a book? Engineering books recommendations...

Return to index: [Subject] [Thread] [Date] [Author]

Point Loads on Strip Footings

[Subject Prev][Subject Next][Thread Prev][Thread Next]

A strip footing that supports a masonry block wall there is the potential for
adding about 11 kips of point load at the top of the masonry wall. For load
distribution, I think I can take up to 1/2 the wall height which would be 4'-6".
With the 11kip load spread over 4'-6" feet, the  future bearing pressure be 3.5
ksf from about 1.0 ksf. The  allowable soil bearing capacity is unknown, the
building is about 50 years old and shows no signs of settlement.

Typically, when the allowable bearing pressure is unknown, I try to keep the
bearing pressure below 2.5 ksf. I would hate to underpin the strip footing and
place a spread footing for fear of the a sudden settlement, or screw up by the
contractor. I think that underpinning a standard strip footing may be a cure
that is as risky as the disease.
Doweling into the side of 12" thick strip footing to enlarge the footing I think
is just as risky.

Are there any other options?

I would appreciate any comments on this issue.
 I thank you in advance.



******* ****** ******* ******** ******* ******* ******* ***
*   Read list FAQ at:
*   This email was sent to you via Structural Engineers 
*   Association of Southern California (SEAOSC) server. To 
*   subscribe (no fee) or UnSubscribe, please go to:
*   Questions to seaint-ad(--nospam--at) Remember, any email you 
*   send to the list is public domain and may be re-posted 
*   without your permission. Make sure you visit our web 
*   site at: 
******* ****** ****** ****** ******* ****** ****** ********