How to calculate the lighting of a house

The calculation formula of lighting floors is (number of floors × height 1×√3- actual floor spacing) ÷ (height 2×√3). According to the relevant regulations of the state, the sunshine time of the bottom window of a residence is not less than 1 hour from winter to morning, and the interval is the height from the outdoor terrace of the building to the cornice of the residence /tan(a)a- the solar altitude angle from winter to noon. It can also be calculated by the ratio of building height to building spacing = 1: 1.2.

What are the factors that affect the lighting of houses?

1, building spacing

Building spacing will affect the lighting effect of the house, so pay attention to building spacing when buying a house. If the building spacing exceeds the relevant standards, try not to buy it, which will affect the lighting and make it very uncomfortable to live.

2. Huxing

Housing units will also have a certain impact on lighting. Generally, the lighting effect of the north-south transparent unit will be better. Therefore, buyers should pay attention to whether the sunshine will weaken with the increase of depth when buying a house. Generally, the bigger the house, the smaller the depth and the better the lighting.

Step 3: Floor

The height of the floor will affect the lighting, so when buying a house, try to choose the area of 1/3 to 2/3 of the total number of floors, and the lighting effect of the floors in this area will be better. It is best not to choose a house with a low floor, because the lighting effect is poor.

4, the surrounding environment

The surrounding environment of residential area can not be ignored. If there are high-rise buildings around the community, it will block the sun and lead to poor lighting effect. So pay attention to the surrounding environment when buying a house.

What are the calculation rules of full-window sunshine in residential buildings?

In the calculation of total sunshine of residential buildings, the left and right points of the datum plane for confirming sunshine analysis and calculation are taken as the calculation points. When the width of a window or balcony should be less than or equal to 1.8m, two points about the actual width should be taken as calculation points. If the width of the window or balcony is greater than 1.8m, it shall be calculated as 1.8m, and the midpoint of the window or balcony shall extend to both sides by 0.9m.