Product Capability

trianglePermeability of MOYAI DRAIN

Permeability performance of MOYAI DRAIN is based on the permeability test using Manning equation and the derived roughness co-efficient based on the experimental value n=0.11.
From this the permeable volume of MOYAI DRAIN is calculated in theoretical drainage volume is derived.

Maning Formula

DRAIN MAT permeability

DRAIN MAT permeability1

DRAIN PIPE permeability

DRAIN PIPE permeability2

*75kN/m2 is a value that exceeds the standard value of the DRAIN MAT when loaded. So the standard area will be the effective flow cross section area when loaded at 75kN/ m2.

*1)Permeability test: Executed on March 2002 at Osaka prefecture National Institute of Advanced Industrial Science and Technology.

Permeability of MOYAI DRAIN TOPtrianglegreen2