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GEO5

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Friction angle on pile skin

Reference values of friction angle between the pile skin material and the surrounding non-cohesive soil are listed in the following table:

Friction angle on pile δ [˚]

Pile material δ [˚]
Steel piles 20
Timber piles 0,75 φ
Steel reinforced concrete piles 0,75 φ
where: φ - angle of internal friction of soil

Literature:

NAVFAC DM 7.2, Foundation and Earth Structures, U.S. Department of the Navy, 1984.




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