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Question:

Building lighting problems. North and South are 18 floors. How about the 5 floor lighting?

I'm in Ma'anshan. I want to buy a house. North and south to a total of 18 layers, is in front of a similar 18 storey, 45 meters from the floor, the front left is a 6 storey multi-storey, I would like to ask the 5 floor of the east of a Huxing lighting?

Answer:

Our country is in the northern hemisphere, the winter solstice is the shortest time of sunshine, for example to calculate noon sunshine, a formula: L=H-dtgAL: the shadow height from the front floor; H: the height of the front building; A: the altitude of the sun at the solstice; D; floor spacing.Ma'anshan is 31.7 degrees north latitude, the winter solstice noon solar altitude is 90-23.5-31.7=34.8 degrees, three meters by layer 18 floor 54 meters high, is the winter solstice before the shadow building height of =54-45xtg34.8=22.72 meters. That is to say, the day after the winter solstice 7 floor below noon to see the sunlight.As for the left front, that is, the southeast of the 6 storey building on the East after the impact of the floor, the next can not give accurate formula. But the winter solstice day the sun rises in the southeast, the six floor certainly light. You said the 5 floor of the east of the lighting will certainly not be good.
I'm just sunshine, and I need a lot of things, such as the general plan of the building, the plane of the body, the height of the building, and so on. The rules in different regions are also quite different.So don't look at the others. This is no way to judge, because don't know the plane before and after building (left or right) and building wide (wide or narrow). Such as the construction of wide narrow, small, wide influence, big impact.In addition, the front of the 6 storey, from the point of view of Rizhao, on the back of the 5 storey is unlikely to have an impact...Conditional, go to the site to measure the best.
Afternoon lighting files of the fierce, good morning estimates, you need to look at the house at different times, it is the most accurate

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