soil lateral pressure in multi-layered condition
soil lateral pressure in multi-layered condition
(OP)
Hello,
Assuing overberdon = 80psf, Rankine theory.
1st layer: ϒ1,Ka1, h1 (layer thickness)
2nd layer: ϒ2,Ka2, h2
3rd layer: ϒ3,Ka3, h3
Lateral earth pressure at to of each layer
80 x Ka1 ------------- 1st layer
(80 + ϒ1 x h1) x Ka2 -----2nd layer
(80 + ϒ1 x h1 + ϒ1 x h1) x Ka3 ----- 3rd layer
For each layer, take the upper layers as surcharges in the calculation.
Please tell me if this calculation is right.
Thanks.
Tony
Assuing overberdon = 80psf, Rankine theory.
1st layer: ϒ1,Ka1, h1 (layer thickness)
2nd layer: ϒ2,Ka2, h2
3rd layer: ϒ3,Ka3, h3
Lateral earth pressure at to of each layer
80 x Ka1 ------------- 1st layer
(80 + ϒ1 x h1) x Ka2 -----2nd layer
(80 + ϒ1 x h1 + ϒ1 x h1) x Ka3 ----- 3rd layer
For each layer, take the upper layers as surcharges in the calculation.
Please tell me if this calculation is right.
Thanks.
Tony





RE: soil lateral pressure in multi-layered condition
Lateral earth pressure at the top of each layer.
Thanks.
RE: soil lateral pressure in multi-layered condition
www.PeirceEngineering.com
RE: soil lateral pressure in multi-layered condition
Example in 'Trench & Shoring Manual' by state of Califonia department of transportation doesn't count ALL the layers' weight. Page 6-19.
It's surprising.
RE: soil lateral pressure in multi-layered condition
RE: soil lateral pressure in multi-layered condition
f-d
¡papá gordo ain’t no madre flaca!