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Anonymous users2024-01-24If that's a standard drawing, there's a square icon in the circle to indicate a ground checkpoint. Generally at the very end of the drain pipe.
When the cleaning port and pipeline are blocked, the pipe is usually sealed. There are also regulations in the specification, and several toilets or squatting toilets must be equipped with cleaning outlets.
In the bathroom of the construction project, there are two circles marked on the drawings of a small rectangle, which are probably two drainage pipes with encapsulated pipe cages on the outside.
It's purely normal, don't care about du
I think many people have had this kind of experience, but there are a lot of boys asking for paper toilets from girls, and I am like this in elementary school, junior high school, genus and even high school. Every time I want to go to the toilet, I will find a female classmate in the class, of course, the principle of proximity. >>>More
The old man just hoped that he would not be a burden to his son. >>>More
2*100/5=40
Scale 1:40 >>>More