Design of Windows

The important points to be kept in mind while making provisions for windows in a room are listed as follows : 

1. The size and number of windows should be sufficient to provide adequate light and ventilation to the room 
2. Windows should be located opposite to each other wherever possible. Windows provided on the northern side permit maximum day light without glare. 
3. Window sills should be placed at 750 to 1000 mm above the floor level. This is considered as a reasonable height for the inmates to have a convenient look outside. In case of bath and W.C.  and other situations where privacy is required window sill should be kept at 1750 rnrn above the floor level. The top of windows and doors should however be at the same height. 
4. Buildings in humid regions need special attention for adequate ventilation of the room. The area of window opening in such regions should be maximum and a window should be so located as to permit maximum ventilation of the apartment. 
5. The shutters of a window in external walls should open outside. This checks the entry of rainwater inside the room. 
6. All external windows specially those on ground floor should be provided with mild steel, round or square, bars of steel grills to safeguard against theft. 
7. Windows in external wall should be provided with chajja projections to prevent the entry of rainwater into the room, as well as protect the window material from water. Similarly, it is desirable to slope the window sill towards the external face of the wall. The sill should preferably be weathered and throated to throw the rain water of the face of the wall.