DRAIN BOARD FOR CONSOLIDATED ACCELERATION DRAINAGE OF POOR GROUND

摘要

PURPOSE: A drain board for consolidated acceleration drainage of poor ground is provided to maximize drainage efficiency by preventing lowering of discharge capacity. CONSTITUTION: In a drain board(1) for consolidated acceleration drainage of poor ground, a core(2) continuously forming abutments protruded outward and passages between abutments is inserted into a pocket-shaped nonwoven fabric(3). The nonwoven fabric passes water, while preventing earth and sand from coming in. Abutment-protecting members(4) forming plural through holes(40) are installed between the nonwoven fabric and the core.