PROBLEM TO BE SOLVED: To provide a drain system for base greening having a raising cover excellently connecting a drain with a rail structure. SOLUTION: This drain system for base greening has a strainer 4 set on the drain outlet 3 of a drain 2, a rail structure 7 laid on a base 5 collecting water discharged from a plant-raising soil material 6 and extending to the strainer 4, and the raising cover 1 composed of drain plates 8 and 9 covering the strainer 4, touching the end surface 29 of the rail structure 7 in an opposed condition and set exposing the upper part, and an upper lid plate 10. COPYRIGHT: (C)2006,JPO&NCIPI
