The storm water division sump to be constructed in two times, first construction is for sole-plate and part of wall board; second construction is for wall top plate.
雨水分流集水井分两次施工，第一次为底板和部分墙板，第二次为墙顶板一次施工。
2
Lumber matching this soleplate, which is called a top plate, caps these studs.
木材匹配这个唯一的板块，即所谓的顶部钢板，头套这些钉子。
3
This article first introduces one kind of sole polygon on the rectangular plate platoon type algorithm.