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bearing capacity factors:

for:

             for:

shape factors:

depth factors:

inclination factors:

base factors:

ground factors:

where:

c

-

cohesion of soil

q₀

-

equivalent uniform load accounting for the influence of foundation depth

d

-

depth of the footing bottom

γ₁

-

unit weight of soil above the footing bottom

b

-

width of foundation

γ

-

unit weight of soil

N_e, N_d, N_b

-

coefficient of bearing capacity

s_e, s_d, s_b

-

coefficients of shape of the foundation

d_e, d_d, d_b

-

coefficients of influence of foundation depth

i_e, i_d, i_b

-

coefficients of influence of slope of the load

b_e, b_d, b_b

-

coefficients of influence of base slope

g_e, g_d, g_b

-

coefficients of influence of slope of the terrain

φ

-

angle of internal friction of soil

l

-

length of foundation

δ

-

angle of deviation of the resultant force from the vertical direction

β

-

slope of terrain

α

-

slope of footing bot