PLUG ASSEMBLY FOR DUAL PIPES AND CONSTRUCTION METHOD USING THE SAME

摘要

The present invention relates to a dual pipe cover structure for preventing a water leak from an outer pipe in a dual pipe generally buried in a concrete structure applied to a building and a construction method using the same. More specifically, the dual pipe comprising the pipe and a corrugated pipe firstly prevents a water leak by a corrugated pipe cover and a bushing cap, and a packing space which is a space between a housing and a pipe tube covering the pipe in order to secondarily prevent a water leak.