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Shear Force in the Nail

In nail shear bearing capacity check, the slip surface is considered at the maximum depth of the weathered layer. The shear force Fs is determined from forces acting on the soil block.

Shear force in nail

where:

Fs

-

shear force in the nail

W

-

soil block weight

Fnail

-

force in the nail

Fw

-

force due to water flow

lv

-

vertical spacing

lh

-

horizontal spacing

t

-

weathered layer thickness

ω

-

slope inclination

α

-

nail inclination

φ

-

angle of the internal friction in a weathered layer

c

-

cohession in a weathered layer

A

-

block base area

If the water flow is considered, the program calculates with water in the entire weathered layer.

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