This looks like problematic to me.

The distance is way too long for you to have a descent grade of flow. This will slow down water flow and cause clogging in the long run. 

You can manage that but you will have to have at least two clean outs on the surface, one in each direction.

所有跟帖： 

• 我當初有跟他提過cleanout, 這條排水管隻負責洗衣房和主臥。若再有問題，知道在哪裏挖再加cleanout也簡單了。 -守月- ♀ (293 bytes) () 04/09/2024 postreply 12:38:20

• That's true, it's not deep. Dig a hole and add one doesn't -borisg- ♂ (26 bytes) () 04/09/2024 postreply 12:40:01

• 主水管確實應該一次弄好。返工太麻煩了 -tallcuterich- ♂ (0 bytes) () 04/09/2024 postreply 23:41:30