Requirements Of Staircase And Bathrooms In Building Constructions

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:

1. Every water closets or bathroom should
2. Be so situated that at least one of its walls shall be open to external air.
3. Not be directly over or under any room other than another latrine, washing place, bath or terrace, unless it has a water tight floor.
4. Have the platform or seat either plastered with cement or be made of some water tight non-absorbent materials,
5. 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.
6. Be provided with an impervious floor covering sloping towards the drain and not towards varnishes or any other room.
7. Have a floor level of such a height as to ensure suitable grade towards the sewage drain.

Building Construction Miscellaneous Regulations

Distance Of Buildings From Electric Lines

No verandah, balcony, saiban or the like be allowed to be erected or re-erected or any additions or alterations made to a building with the distances (quoted below) as per the current Indian Electricity Rules and its amendments from time to time between the buildings and any overhead electric supply line.

Voltage line	Vertically (meters)	Horizontally (meters)
(a) Low and medium voltage lines and service lines.	2.4 m	1.22 m
(b) High voltage lines upto and including 33000 V.	3.66 m	1.83 m
(c) Extra high voltage lines beyond 33000 V	3.66 m (plus 0.3 m for every additional 33000 V or part thereof)	1.83 m (plus 0.3 m for every additional 33000 V or part thereof)

Minimum thickness of load bearing walls excluding plaster for residential or business masonry walled buildings:

The strength of masonry walls depends on a number of factors such as the quality of bricks, mortar, method of bonding, unsupported height and length, eccentricity in loading, the position and amount of openings in the wall, the location of longitudinal and cross-wall and combination of various external loads to which the walls are subjected. The walls should be designed taking into account the various factors discussed above, such that the stresses in the walls do not exceed the safe permissible limits.

Requirements For Specific Uses (Regulations For Building Construction):

Parking spaces:

Parking spaces for cars required for cinemas, shopping centres and offices in central areas shall be as given below:

Shopping areas: One car for 440 square meter of plinth area of shops.

Offices: One car for 600 square meter plinth area of offices.

Scales of areas required for parking cars, scooters, motor cycles and bicycles shall be as below:

Cars – 24 sq.m

Scooter / motor cycles – 2.8 sq.m

Bicycles – 1.4 sq.m