supporting member and constructing method of drain apparatus installed slab laying gap for pier

摘要

The present invention relates to a method of installing a concrete pavement on a pier without using a common slant partition and supporting a pillar on a pillar, which is a narrow drainage installation space between a first pier for a first pier slab and a second pier for a second pier slab, And a method of constructing a drainage device for a pit slab using the same.