| 摘要 |
PURPOSE: A drain board assembly is provided to strengthen the joint between a base concrete layer and support pillars by contacting auxiliary pillars of a landing plate to the top of the base concrete layer where main support pillars of a base plate do not contact. CONSTITUTION: A drain board assembly(10) comprises a base plate(20) and a landing plate(50). The base plate comprises a main body(21), main support pillars(22) and guide portions(23). The main support pillars are recessed downward from the surface of the main body. The guide portions are perforated to be located between the main support pillars. The landing plate comprises auxiliary support pillars(51) which are respectively inserted in the guide portions and lowered along the guide portions when placing a top concrete layer, and connecting members(52) connecting the auxiliary support pillars together. |
