LAID SHEET PROVIDED WITH LAMINATION STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a laid sheet provided with lamination structure capable of speedily specifying the area of a damaged part. SOLUTION: A laid sheet provided with lamination structure is connected to an impervious base sheet 1 laid on the ground surface in a water-tight state and is mounted on the upper surface of the base sheet 1. It is constituted of partitioning members 2 with a specific thickness partitioning the upper surface 11 of the base sheet 1 into frame-shapes to form a plurality of partitioning areas, raw water conveyable members 8 with a specific thickness filled in the partitioning areas and capable of leading a water leak parallel in the direction of the plane and an impervious surface layer sheet 9 connecting to the upper surfaces of the partitioning members 2 in a water-tight state and covering the upper surfaces of the raw water conveyable members 8.