722
edits
Changes
Jump to navigation
Jump to search
mLine 1:
Line 1: ===Underdrains: installation===
→Underdrains: installation
[[File:underdrain-subgrade.jpg|300px|thumb|right|Underdrain installed to subgrade.]]
[[File:underdrain-subgrade.jpg|300px|thumb|right|Underdrain installed to subgrade.]]
[[File:underdrain-with-risers.jpg|300px|thumb|right|Underdrain installed with maintenance risers. Note the 'T' joints, which are no longer recommended.]]
[[File:underdrain-with-risers.jpg|300px|thumb|right|Underdrain installed with maintenance risers. Note the 'T' joints, which are no longer recommended.]]