PURPOSE: To prevent the run-off of the sand for controlling the repulsion of a ball on the groundwork pavement of the water permeable artificial lawn by successively placing the nonwoven fabric or urethane mat, the sand and the nonwoven fabric or woven fabric on a water permeable asphalt concrete layer.
CONSTITUTION: A sand filter layer 12 and a crushed stone layer 14 are formed on the foundation bed 10, and a water permeable asphalt concrete layer 16, a nonwoven fabric or woven fabric layer 18, a layer 20 formed by filling pores of fiber aggregate of high porosity with sand, and a non-woven fabric or urethane mat layer 22 are successively placed. Then a water permeable mat 24 and a water permeable artificial lawn 26 are placed on the same, whereby the run-off of the sand used for adjusting the repulsion quantity of a ball, and the flowing into the pores of the water permeable asphalt concrete layer can be prevented.
| JP4058309 | Road construction frame unit |
| JP2001040634 | STRUCTURE ON WATER-BOTTOM GROUND |
| JP2001049667 | CONSTRUCTION METHOD FOR ROAD GROUND OR THE LIKE |
NEMOTO YOSHIHIKO
KABETANI NORIO
ASAHI CHEMICAL IND
| JPS6138962Y2 | 1986-11-10 | |||
| JPS6162905U | 1986-04-28 | |||
| JPS5619406B2 | 1981-05-07 | |||
| JPS5454736A | 1979-05-01 |
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