Need a book? Engineering books recommendations...

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

Re: 20' foundation walls

[Subject Prev][Subject Next][Thread Prev][Thread Next]
I wouldn't even do this project without a geotechnical report. Who knows, you might have whole hill creep! Typical in some spots of the SF bay area. And swimming pools do sometimes pop out of the ground when empty!


On 10/22/2012 2:28 PM, Will Haynes wrote:
The water table may fluctuate so it would be good to have a geotech's
opinion for the area but I am figuring a report may not be available. Even if there is adequate drainage behind the wall, if the high seasonal water table is above any drain elevation there will be saturated soil pressure on the wall and I think following ACI 350 is a good idea.

I would add a water stop to any construction joints in a basement wall
regardless. Self consolidating concrete can help with larger pour heights
as mentioned, the pressure on the formwork will be quite high if pouring
from 20 feet.

Will H

On Sun, Oct 21, 2012 at 1:46 AM, Valerie Eskelsen<
v.t.eskelsen(--nospam--at)>  wrote:

Dear List,

Designing 20' deep, restrained foundation walls for a residential
structure. The water table will not be known until the dig is begun.

Truncated 432 characters in the previous message to save energy.


Post your message to the list by sending it to: SEAINT-SEAOSC(--nospam--at)

The email messages sent to the list will be saved in an archive on the World Wide Web.
These archives are located at:

To contact the list owner, send your message to:

5700 Ralston Street, Suite 300, Ventura, CA 93003

To unsubscribe, switch to/from digest, get on/off vacation, or change your email address, click here.