jdgengineer
Structural
- Dec 1, 2011
- 750
I'm curious how others design site walls and retaining walls for seismic loading in seismic category D, E, F.
Chapter 18 of the IBC requires seismic soil pressures for retaining walls >6' tall. Chapter 15 of ASCE 7 requires seismic loading on cantilevered site walls due to it's self-weight (R=1.25) where the walls is 6' above grade.
My questions for you:
For a retaining wall that is 7' tall, do you include both the soil seismic and the cantilevered wall self weight seismic? If you don't, want if the wall was covered in a heavy veneer? If you don't still, want if the wall cantilevered above the retaining, would you apply it to just the portion above grade?
The conservative option is obviously to apply both, but I'm not sure that was the intent and wanted to see how others interpret it.
Chapter 18 of the IBC requires seismic soil pressures for retaining walls >6' tall. Chapter 15 of ASCE 7 requires seismic loading on cantilevered site walls due to it's self-weight (R=1.25) where the walls is 6' above grade.
My questions for you:
For a retaining wall that is 7' tall, do you include both the soil seismic and the cantilevered wall self weight seismic? If you don't, want if the wall was covered in a heavy veneer? If you don't still, want if the wall cantilevered above the retaining, would you apply it to just the portion above grade?
The conservative option is obviously to apply both, but I'm not sure that was the intent and wanted to see how others interpret it.
