Being Hari facilities manner of the tarpaulin which Hari facilities keeps doing

摘要

PROBLEM TO BE SOLVED: To provide a method of stretching a waterproof sheet which can increase the working efficiency of a waterproof sheet stretching operation by enabling a joining step for independently joining adjacent waterproof sheets and a moving step for moving a carriage for stretching a waterproof sheet without relying on the stretching step for each roll among a series of stretching operations for a waterproof sheet comprising the repetition of a stretching step of stretching a waterproof sheet on the inner wall surface of a tunnel for each roll, a joining step for joining adjacent waterproof sheets, and a moving step of moving a carriage for stretching a waterproof sheet, and also enabling the stretch of a waterproof sheet having a large width without increasing the size of the carriage for stretching a waterproof sheet.SOLUTION: In the method of stretching a waterproof sheet, the waterproof sheet is sequentially placed on the loading base of the carriage for stretching a waterproof sheet, and formed in a bellows shape temporarily. The adjacent waterproof sheets formed in the bellows shape are joined to each other at the lateral ends. While expanding the bellows, the plurality of waterproof sheets are continuously stretched on the inner wall of the tunnel.