BASE PRESSURE MORE THAN BEARING CAPACITY 1

[Erasa]

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?

 

[Ron]

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

 

[thaidavid40]

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

Thaidavid

 

[Erasa]

Thanks, I really appreciate this.

 

[msquared48]

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

Mike McCann, PE, SE (WA)

 

[AdityaDeshmukh]

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.