There is a shallow draining ditch outside of the inn.
客栈的外面有一条浅浅的排水沟。
It finds flashing at draining ditch and rain water opining. It can begin leveling with trowel after screeding.
在排水沟、雨水口处找出泛水，冲筋后即可进行抹找平层。
The concrete piles being poured into deep hole act as the enclosure structure of deep pit. There are draining ditch and water gathering well inside the pit for drainage.
采用钻孔灌注桩作为深地坑的围护结构，在坑内设排水沟、集水井排水。
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