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Pile Technology Coefficients

The coefficient F1 reduces the pile base resistance and coefficient F2 reduces pile shaft resistance. Values can be entered manually by the user or automatically calculated according to the pile type from the following table:

Piles

F1

F2

prefabricated driven piles or steel piles

1.2

2.3

Franki piles

2.3

3.0

driven wooden piles

5.0

5.0

vibrating or vibropressed

2.3

3.2

cast in place screw piles

3.0

4.0

prefabricated screw piles

2.5

4.0

cast in place screw piles with additional grouting

3.0

3.5

prefabricated screw piles with additional grouting

2.5

3.5

steel tubular piles

1.8

3.5

Continuous Flight Auger piles (CFA)

3.0

3.8

bored piles or piles sheeted by bentonite suspense

3.5

7.0

bored piles with steel casing

4.0

3.9

root pile

2.2

2.4

strauss pile

4.2

3.9

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