Influence of Sand-Gravel Cushion
If the sand-gravel cushion is specified below the spread footing, the material parameters X in individual layers are computed in the following way:
For layer ha,i:
where: | Xi | - | material parameters at ith layer |
Xc | - | material parameters of sand-gravel cushion |
For layer hb,i:
where: | Ac | - | area of sand-gravel cushion |
Xc | - | material parameters of sand-gravel cushion | |
Xb,i | - | material parameters of b,i layer | |
bi | - | cushion widths in the ith layer | |
li | - | cushion length in the ith layer |
Analysis Xi in the sand-gravel cushion