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Add additional parameters for the Global and Detailed assessment method.


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Input screen for the 4 5 sets of parameters: Water, Revetment, Foreland, Soil and SoilInfluence zone

 

NOTE The state parameter Ψ5m entered here is used in step 5 of the Global check and in the Detailed check.

 

5.1 Water

Name in English

Name in Dutch

Description

Symbol

Unit

Default

Water level

Niveau water

The water level.

Zwater

m

0.00

Unit weight of water

Soortelijk gewicht water

The unit weight of water.

γw

kN/m3

9.81

...

5) and the Detailed check.

A state parameter < -0,05 means that liquefaction is unlikely, whereas a state parameter > -0,05 indicates some liquefaction potential.

Name in English

Name in Dutch

Description

Default

State parameter Psi 5m

State parameter Psi 5m

Parameter describes the state of the soil and is used in the Detailed check.

0.0000

(-10-10)

Sand type (particle size)Zand type (korrelgrootte)

Parameter describes the type of sand and is used in the Global check (breach flow criteria is step

0.0000

(-10-10)

 

...

1e).

Three types of sand are considered:

  • very fine sand with  D50 ≤ 200 μm and D15 ≤ 100 μm
  • medium fine sand with  200 < D50 ≤ 500 μm and 100 < D15 ≤ 250 μm
  • coarse sand and gravel with   D50 > 500 μm and D15 > 250 μm 
Fine sand

 

5.5 Distance dike toe/influence zone

Name in English

Name in Dutch

Description

Default

Distance dike toe /
influence boundary

Afstand buiten dijk / invloedslijn

Parameter describes the distance between the dike toe and the boundary of influence zone. it must always be less than the foreland length.

0.00

(0-foreland length)


 

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