Alternately, a geocomposite edge drain can be
used. The excavator, if appropriately equipped,
will lay a geocomposite drain into a narrow
trench and backfill with sand between the drain
and the exposed base course.
The geocomposite drain is “inserted” into the narrow
by backfilling with sand between the geocomposite and
the exposed base course.
For more information please contact the Geosynthetic Materials Association at www.gmanow.com.