Natural lighting

It is sunlight, penetrating into the room through the windows, skylights and other transparent surfaces. Natural lighting can be side - through the window openings, upper - through skylights or upper-side. Daylight is beneficial for psychophysiological reasons, however, its intensity varies considerably depending on the weather, the time of day and season creates difficulties in the rational lighting of rooms and workstations.

Side lighting allows direct eye contact with the natural landscape, which has a positive effect mentally. The quality of the side lighting depends on the height of the windows above the floor, the area and shape of the windows and the distance from the consumer or workplace to the window. Tables, desks, machines etc.. the workstation should, in principle, not be more than twice the height of the window. Windows should reach as high as possible to the ceiling, and their upper parts should not be obstructed. The bottom line of the windows is placed at different heights depending on the architecture of the building. This line should not be below the level of the tables in the room (ok. 75 cm from the floor). Sometimes the plane of the windows reaches almost to the floor, which does not have much of an effect on the interior lighting, but it is justified by landscape considerations. The size of the window openings can be roughly determined from the ratio of the area of ​​the windows (net) to the floor area of ​​the room, the ratio should not be less than 1:10 for works that do not require precision, 1:7 for semi-detailed work and 1:5 for precision work. Good lighting for intercourse is required in consumption halls 1:5 ÷ 1:7. The size of the windows and their location are not the only conditions for good lighting. It is very important to keep the windows clean. Also, do not use frosted and frosted glass, because such panes give the impression of separating the interior from the outside light. The curtains should be as thin and as light as possible.