REQUIREMENTS OF STAIRCASE & BATHROOMS
Requirements of staircase and bathrooms other than lighting and ventilation are given here.
Other requirements of staircase:
The minimum clear width of staircase in case of residential buildings shall not be less than 1m. In case of a public building, a staircase not less than 1.2m in width should be provided for 600 persons or thereof, expected to use the building and the farthest corner of the building shall not be more than 30m distant from the staircase. The maximum riser and minimum width of tread of staircase should be as given in the table 2.
Type of Building
|
Maximum riser
|
Minimum tread width
|
Public buildings
|
15 cm
|
30 cm
|
Domestic buildings
|
19 cm
|
25 cm
|
Other requirements in the construction of bathrooms and water closets:
Every water closets or bathroom should
- Be so situated that at least one of its walls shall be open to external air.
- Not be directly over or under any room other than another latrine, washing place, bath or terrace, unless it has a water tight floor.
- Have the platform or seat either plastered with cement or be made of some water tight non-absorbent materials,
- Be enclosed by walls or partitions of bricks. Surface of every such wall or partitions should be finished with a smooth impervious material, such as cement plaster, 1.3cm thick of glass glazed tiles or polished marbles or any suitable material to a height of not less than 1m above the floor of such a room.
- Be provided with an impervious floor covering sloping towards the drain and not towards varnishes or any other room.
- Have a floor level of such a height as to ensure suitable grade towards the sewage drain.
