How high is the toilet seat suitable for going to the toilet?

The living room is divided into family rooms or public rooms, and the size difference is still very big. The bathroom is a multifunctional place, but it doesn't take up much space and needs to be placed reasonably. Toilet size standard:

The indoor clear height of the bathroom should be 3.5~4.om (it can be reduced appropriately when the skylight is set). The elevation of indoor terrace should be 0. 15m higher than that of outdoor terrace. If the septic tank is built indoors or underground, the ground elevation shall be determined by the septic tank drain. Each toilet is1.00 ~1.50m long and 0.85 ~1.20m wide, and each urinal is 0.75m deep and 0.70m wide. The spacing of independent urinals should be 0.70 ~ 0.80 m. These are the positions to be reserved, and the size is also very important. It is too wasteful to leave too much space and too small to use.