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No, the aperture is not large enough to be easily blocked.
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That won't get in. The standard is 100
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Just kidding, crazy 75's will be.
It's completely OK, as long as the space is reasonable, the upper and lower floors will not affect the function of the role, such as the bathroom is not very reasonable under the kitchen, and the other waterproofing and pipe pipes are OK.
It must be small and easy to clog, 110 pipes should be used, and the elbow of the pipe must have an inspection port
1 The pipe diameter is not enough, the toilet is generally 110 drainage, and the floor drain is generally 50 or 63, which will be blocked. >>>More
No. In addition to the drainage pipe at the bottom, any other pipelines that do not belong to the elevator function are not allowed.
I'm Golden Sheep Pipe, and it's okay within normal allowable limits.