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BASE PRESSURE MORE THAN BEARING CAPACITY

BASE PRESSURE MORE THAN BEARING CAPACITY

BASE PRESSURE MORE THAN BEARING CAPACITY

(OP)
Hi Engineers,
I am designing a manhole and have the base pressure to be more than the bearing capacity of the soil. I don't want to increase the base size or introduce anything like piles.
Any ideas?

RE: BASE PRESSURE MORE THAN BEARING CAPACITY

Must be poor soil conditions!
You could consider soil remediation using injection methods. Get with geotech and determine reason for low bearing capacity

RE: BASE PRESSURE MORE THAN BEARING CAPACITY

This question was double-posted from the Civil/Environmental Engineering forum. Look for answers there.

Thaidavid

RE: BASE PRESSURE MORE THAN BEARING CAPACITY

(OP)
Thanks, I really appreciate this.

RE: BASE PRESSURE MORE THAN BEARING CAPACITY

If that is the case, how does the soil support itself in place?

Mike McCann, PE, SE (WA)


RE: BASE PRESSURE MORE THAN BEARING CAPACITY

You can use grouting to improve soil conditions. It will be better to use geo-grids if possible. Also keep an eye out for pore water pressure.

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