calculating kh from 0.4*SDS
calculating kh from 0.4*SDS
(OP)
[highlight #EF2929]thread507-418397: Seismic Lateral Earth Pressure for Retaining Wall Design
Dear Engineers, I am designing a retaining wall, I need to consider seismic load.
From FEMA 450, calculate the Kh factor. as Kh = Sds/2.5. My question is about ss value, it is given in % of g. for example for Jeddah city it is about 35 (not divided by 100 to become 0.35).
For calculating SMS = Fa*SS, shall I consider the ss as (35/100)*9.81 = 3.4335 or just 35 or 0.35 only.
I searched but I could not find an example to calculate kh.
Thank you
Dear Engineers, I am designing a retaining wall, I need to consider seismic load.
From FEMA 450, calculate the Kh factor. as Kh = Sds/2.5. My question is about ss value, it is given in % of g. for example for Jeddah city it is about 35 (not divided by 100 to become 0.35).
For calculating SMS = Fa*SS, shall I consider the ss as (35/100)*9.81 = 3.4335 or just 35 or 0.35 only.
I searched but I could not find an example to calculate kh.
Thank you
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RE: calculating kh from 0.4*SDS
I've always seen examples using 0.35 to avoid later confusion in the calculations, but I suppose the percentage could be carried through.
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just call me Lo.
RE: calculating kh from 0.4*SDS
RE: calculating kh from 0.4*SDS
RE: calculating kh from 0.4*SDS
An online reference for some of the seismic calculations of a retaining wall:
RetainPro
I really think the Retain Pro manual is the best reference for retaining wall design. It goes into a lot of little details about retaining wall design and gives a pretty good explanation of seismic.