Line 9:
Line 9:
! Component
! Component
! Recommended depth (with underdrain pipe)
! Recommended depth (with underdrain pipe)
! Typical void ratio (''V<sub>R</sub>'')
! Typical porosity (''n'')
|-
|-
| Ponding (''d<sub>p</sub>'')
| Ponding (''d<sub>p</sub>'')