Prefabricated vertical drains is a fine vertical passage for silt, silt soil and saturation sticky soil

Linear drainage boar is a fine vertical passage for silt, silt soil and saturation sticky soil by use of drainage concretion. It greatly decreased the time for concretion. In the treatment of soft groundwork, it has the same function, design and construction equipment as bagged sand well. It is one new kind of material to drain off the underground water.

Art. No.			PLD0501	PLD0502	PLD0503
			Type
Item
			SPD-I	SPD-II	SPD-III
Unit length weight Wt./m			100	110	120
Thickness mm			3.5	4.0	4.5
Width  mm			100	100	100
Tensile strength kN/10cm			1.3	1.4	1.5
Elongation %			8.5	7.8	7
Vertical drainage Wt./per unit area cm3/s			20	30	40
Filter	Filter coefficient cm/s		5×10-4	5×10-4	5×10-4
	Tensile strength	Dry  N/cm	20	25	30
		Damp  N/cm	15	20	25
	Soil separation  mm		0.075	0.075	0.075

Prefabricated vertical drain