DRAINAGE CANALS
A grass layer - B ground layer - C ground - D geotextile - E draining gravel layer - F draining perforated pipe - G undergruond of sand

 

STRAIGHT5 WALL DRAINAGE
A straight wall - B underground of sand - C draining perforated pipe - D draining gravel layer - E geotextile - F ground

 

ROADS CONSTRUCTIONS
A asphalt - B draining gravel layer - C geotextile

 

EROSION CONTROL
A geotextile - B ground - C stones breakwater

 

LIQUID WASTE CONTAINMENT
A waterproof protection layer with geotextile - B waterproof layer - C graound

 

REINFORCED GROUNDS
A geotextile layers - B ground - C drainage materials