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Modulus of Subsoil Reaction According to CUR 166

The following table stores the values of the modulus of subsoil reaction derived from experimental measurements carried out in Netherlands (described in CUR 166). The table offers secant modules, which are in the program directly transformed into secant modules of subsoil reaction - see nonlinear modulus of subsoil reaction.

kh,1 [kN/m3]

p0 < ph< 0,5 ppas

kh,2 [kN/m3]

0,5 ppas  ≤ ph ≤0,8 ppas

kh,3 [kN/m3]

0,8 ppas  ≤ ph ≤ 1,0ppas

Sand

loose

medium dense

dense

12000 - 27000

20000 - 45000

40000 - 90000

6000 - 13500

10000 - 22500

20000 - 45000

3000 - 6750

5000 - 11250

10000 - 22500

Clay

soft

stiff

very stiff

2000 - 4500

4000 - 9000

6000 - 13500

800 - 1800

2000 - 4500

4000 - 9000

500 - 1125

800 - 1800

2000 - 4500

Peat

soft

stiff

1000 - 2250

2000 - 4500

500 - 1125

800 - 1800

250 - 560

500 - 1125

where:

p0

-

value of pressure at rest [kN/m2]

ppas

-

passive pressure [kN/m2]

ph

-

horizontal pressure corresponding to a given displacement of a structure [kN/m2]

Diagram of determination of the modulus of subsoil reaction

Literature:

CUR 166 Damwandconstructies, available at Civieltechnisch Centrum Uitvoering Research en Regelgeving: P.O.Box 420, 2800 AK Gouda (NL).