a method of preloading with vertical wick drains

permeable drains

plastic band-shaped prefabricated drains

Plastic board drains

Plastic drains

plastic drains board

position of drains

PREFABRICATED DRAINS

prefabricated strip drains

partially penetrating sand drains

Prefabricated vertical drains PVD

SAND DRAINS FOUNDATION

sand drains ground

SEWERS AND DRAINS

spacing of drains

Surcharge Precompression on Ground with Sand Drains

the gap between prefabricated drains

the spacing between prefabricated drains