Seismic on retaining wall
Seismic on retaining wall
(OP)
I have a restrained (at top and base) retaining wall about 14' high. I noticed that Retain Pro uses the Monokobe-Okabe equations for canitlever walls but this is not an option for restrained walls. Does anyone know why this is not applicable to restrained walls? Would this be the correct procedure for seismic on restrained walls?





RE: Seismic on retaining wall
Hope this helps!
CIS Geotechnical
jrodriguez@centralindustrialpr.com
RE: Seismic on retaining wall
The program doesn’t use the Monokobe-Okabe/See-Whitman for restrained walls because the formula for this methodology uses the active earth pressure conditions Ka. You want to calculate your earth pressures at rest Ko. And these conditions are not used in the equation for the program.
RE: Seismic on retaining wall
If you don't have access to Kramer, AASHTO recommended that nonyielding abutments be designed to resist lateral thrust obtained from the Mononobe-Okabe method with a pseudostatic horizontal acceleration 50% gretater than the effective peak acceleration.
Don't forget the inertia effects of the wall itself. Good luck.
RE: Seismic on retaining wall