DOUBLE FACE DRAIN BOARD,SUBSTITUTE FOR SAND &GRAVEL

EASY APPLICATION
HIGH DRAIN PERFORMANCE
THE EXCELLENCY HAS BEEN PROVED BY JAPANESE AUTHORITY

PUBLIC DRAIN is the only authorized drain board by Public Works Research Center of Japan.

HIGH DRAINAGE ABILITY
Combining specially processed less clogging filter and pressure core structure,long term high level drainage ability can be maitained.

HIGH DOUBLE FACE DRAINAGE
Effective for both rain water and spring water from underground.

FOLLOW TO TOPOGRAPHICAL CHANGE
Both filter and core structure are strong and flexible,and follow to topographical change without breaking and cutting.

EASY APPLICATION, GREAT COST SAVING
Special skill is not required and high work speed can be attained,by jointless and light weight material. Total work cost is lower than that of conventional aggregate works.

PUBLIC DRAIN TYPE

EXAMPLE

Banking drainage

Golf course drainage

Park,Sport ground drainage

HIGH EFFICIENCY OF PUBLIC DRAIN
FOR GROUND DRAINAGE AND WATER /AIR RELIEF

EXAMPLE/GROUND DRAINAGE

(1)Spring pore water drainage from existing ground. (substitute for sand mat)

(2)Pore water drainage of banking,seepage(rain water)drainage from slope.(substitute for sand filter)

(3)Rain water drainage from ground surface.

(4)Spring water drainage from ground.

EXAMPLE/OTHERS

(1)Substitute for back-fill material.

(2)Water and air relief.

SPECIFICATION ITEM UNIT TYPE A TYPE B Material Core structure - Poly Winyl Chloride Filter - Non-woven Spun bonded Poly Estel Dimension Depth mm 10 Width mm 300 600 300 600 Roll length m 50 Roll diameter m 0.9 Weight Unit weitht gf/m 250 500 175 350 Weight per roll kgf 12.5 25.0 8.8 17.5 Mechanical property Tensile strength(#1) Core structure kgf/ product-width >300 >600 >100 >200 Filter(dry cond.) >190 >380 >190 >380 Filter(wet cond.) >160 >320 >160 >320 Core structure Compress. Strength kgf/cm 2 >5.0 >2.5 Filter elongation at max.load(#1) dry % >20 wet % >20 Core elongation at max.load(#1) % >50 >50 Parmeabilty coefficint(#2) horiz. cm/sec > > verti. cm/sec circa1.0#10 -2 circa1.0#10 -2

Ramarks(#1)Product length direction
(#2)Horizontal : Permeability coefficient along core structure
Vertical : Permeability coefficient of filter