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Base Resistance

The vertical bearing capacity of the base is given by the formula:

where:

Rb

-

base resistance

Ab

-

base area

q0

-

peak resistance in base

Determination of peak resistance q0 should be part of the geological survey.

Recommended values of peak resistance q0 [MPa] can be found in professional literature for specific soils and structure types:

- for sheet piles

non-cohesive soil

qc

7,5

15

25

q0

7,5

15

20

- for driven pile walls

q0

non-cohesive soil

cohesive soil

qc

cu

s/Deq

7,5

15

25

100

150

200

0,035

2,200-5,000

4,000-6,500

4,500-7,500

0,350-0,450

0,55-0,700

0,80-0,950

0,100

4,200-6,000

7,600-10,200

8,7500-11,500

0,600-0,750

0,85-0,110

0,115-0,150

- for bored pile walls

q0

non-cohesive soil

cohesive soil

qc

cu

s/Deq

7,5

15

25

100

150

250

0,02

0,550-0,800

1,050-1,400

1,750-2,300

0,350-0,450

0,600-0,750

0,950-1,200

0,03

0,700-1,050

1,350-1,800

2,250-2,950

0,450-0,550

0,700-0,900

1,200-1,450

0,10

1,600-2,300

3,000-4,000

4,000-5,300

0,800-1,000

0,1200-0,1500

1,600-2,000

where:

qc

-

cone penetration resistance, CPT [MPa]

cu

-

total cohesion of the soil [kPa]

s

-

pile settlement

Deq

-

pile diameter

Literature:

EA-Pfähle, ISBN: 978-3-433-03005-9.

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