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DIN 4017

The solution is based on German standard DIN 4017, where the bearing capacity of foundation soil is given by formula:

where:

bearing capacity factors:

for:

          

for:

shape factors:

for:

for:

inclination factors for φ > 0:

for: *

for:

kde:

for:

for:

inclination factors for φ = 0:

ground factors:

for:

for:

for:

for:

for:

for:

base factors:

for:

for:

for:

for:

where:

c

-

cohesion of soil

q0

-

equivalent uniform load accounting for the influence of foundation depth

d

-

depth of footing bottom

γ

-

unit weight of soil above the footing bottom

b

-

width of foundation

γ

-

unit weight of soil

Nc,Nd,Nb

-

bearing capacity factors

sc,sd,sb

-

shape factors

ic,id,ib

-

inclination factors

gc,gd,gb

-

ground factors

bc,bd,bb

-

base factors

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 bottom

T

-

horizontal component of resultant load

ω

-

angle between horizontal component of resultant load T and longer axis of footing (in the direction lef)

* Note: The program performs analysis for both orientations of load inclination and uses more unfavourable value.

Orientation of load inclination

Literature: DIN 4017:2006-03

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