STRUCTURE OF DRAINAGE CHANNEL INSTALLING PIPE CULVERT TYPE GUTTER FOR DRAINABLE PAVEMENT

摘要

PROBLEM TO BE SOLVED: To improve drainability by arranging drain holes for dropping rainwater in a drain pipe of a pipe culvert at a regular interval in a surface for arranging a drainage channel for drainable pavement of a gutter upper surface, and inclining an upper surface between the drain holes toward the drain holes. SOLUTION: Drain holes 3 for dropping rainwater in a drain pipe 1a of a pipe culvert type gutter 1 are arranged at a regular interval in a surface for installing a drainage channel 2 for drainable pavement of an upper surface of the pipe culvert type gutter 1. An upper surface between the drain holes 3 is respectively formed as an inclined face having a gradient toward the drain holes 3 to thereby quickly drain a seed of a plant and earth/sand together with rainwater.