B1/VM4
This solution is based on the NZ standard B1/VM4. The calculation is the same as for the standard approach, except the following coefficients:
bearing capacity factors: | |
shape factors: | |
depth factors: | |
for φ = 0 and d/b ≤ 1: | |
for φ = 0 and d/b > 1: | |
for φ > 0: |
|
for d/b ≤ 1: | |
for d/b > 1: | |
inclination factors: | |
for φ = 0: |
|
for φ > 0 H parallel to Lef: | |
for φ > 0 H parallel to Bef: | |
| |
where: | d | - | depth of the footing bottom |
b | - | width of foundation | |
l | - | length of foundation | |
φ | - | angle of internal friction of soil | |
c | - | cohesion of soil | |
H | - | horizontal component of resultant load | |
V | - | vertical component of resultant load |
Literature:
Acceptable Solutions and Verification Methods For New Zealand Building Code Clause B1 Structure, 1 December 2008