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Strictly speaking, the design of this structure is unreasonable, although the thickness of the indoor floor decoration layer is still 50-60mm, but the finished surface of the bathroom floor can not be lower than the indoor floor.
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Thinking about the needs of future use, there is no hindrance, and it will be fine.
The bathroom is water, the bedroom is wood, the kitchen is fire, and the water should be in the northeast, or at the lowest, so it is higher than the bedroom, which will cause the yin qi in the home, the main male decline, and hurt the male owner and the eldest son.
3-5 cm can float.
If it is a brick house with a thickness of 120, it is a partition wall, if it is a newly built building, please knock your head on the wall, the echo is dull bass is a shear wall, if the echo is very empty, it is a partition wall, of course, you can also knock it by hand.
The bathroom and kitchen should be low, and the bathroom should be the lowest, remember.
Can be filled with perlite and cement mixing, never overweight.