What does the projected area mean?
The so-called projection area is usually used to calculate the building area, that is, the shadow area of the vertical projection of the building from top to bottom. This projection also includes two projection methods, one is orthographic projection and the other is backprojection. Orthographic projection means that the center line of the projection line is perpendicular to the plane, while the rear projection screen is exposed in the opposite direction.
How to calculate the projected area:
1, usable area in the suite
The projected area of a house is also called indoor building area, which is mainly composed of three factors: indoor usable area, indoor wall area and the sum of indoor balcony building projection area. Among them, the indoor usable area is the sum of all the spaces in the home, including bedroom, living room, aisle, kitchen, bathroom and storage room. In addition, if there are stairs at home, the stairs are also counted as the usable area in the suite. But it does not include the thickness and area of chimneys, tube wells and internal walls.
2. Interior wall area:
The indoor wall area mainly includes the sum of two walls, one is the bearing wall and the other is the supporting wall. But different walls are slightly different in calculation. For example, partition walls and * * * walls are only calculated according to half of the projected area, while free walls are calculated according to the total projected area.
3. Indoor balcony construction area:
Finally, the building area of indoor balcony includes balcony frame and wall area connected with the house. But different balconies have different calculation methods. If the fully enclosed balcony is calculated according to the total projected area, if the semi-open balcony is only half of the projected area.
Summary: The above is to introduce what the projected area means and how to calculate the projected area, hoping to bring help to friends in need. If you need to know more in the future, please pay attention to Qijia. com。