Every living unit shall have available supply of safe water obtained from any of the following sources -
(a) Public or municipal water if available.
(b) A drilled, driven or dug well or tube well.
45. Basement- The construction of the basement shall be allowed by the Authority in accordance with the landuse and other provisions specified under the Development Control Rules and this Byelaws.
NEW REVISED BUILDING BYELAWS FOR GUWAHATI METROPOLITAN AREA-2006 Guwahati Metropolitan Dev. Authority Page No. [30] Basement can be constructed up to minimum prescribed setbacks line and beyond prescribed building lines.
Basement shall not be permitted in low lying areas and areas without adequate drainage facilities to ensure drainage from the basement.
Basement may be put to only the following uses-
(a) Storage of household or other goods of ordinary non combustible material;
(b) Strong rooms, bank cellars etc.
(c) Air conditioning equipment and other machines used for services and utilities of building subject to satisfaction of the Authority.
(d) Parking spaces.
(e) Air conditioned shopping which will then be counted in FAR.
46. The basement shall have the following requirements:
(a) Every basement shall be in every part at least 2.4 m in height from the floor to the underside of the roof slab or ceiling;
(b) Adequate ventilation shall be provided for the basement. The standard of ventilation shall be the same as required by the particular occupancy to Rule. Any deficiency may be met by providing adequate mechanical ventilation in the form of blowers, exhaust fans, air conditioning system etc.
(c) The minimum height of the ceiling of any basement shall be 1 m above the average surrounding ground level.
(d) Adequate arrangements shall be made so that surface drainage do not enter the basement.
(e) The walls and floor of the basement shall be watertight and be so designed that the effect of the surrounding soil and moisture, if any, are taken into account in design and adequate dampproofing treatment is given.
(f) The access to the basement shall be separate from the main and alternate staircase providing access and exit from higher floors, where the staircase is continuous. In case of building served by more than one staircase the same shall be of enclosed type serving as a fire separation from the basement floor and higher floors. Open ramps shall be permitted if they are constructed within the building line subject to the provision of (d) above.
(g) If such ramps are provided in basement parking floor the gradient of it should be minimum 1:5 and the height of 2.7 m is to be maintained at the entrance also.