Section 7(1)(a) in The Special Rules for the Mulit-storeyed and Public Buildings, 1974
(a)There shall be provided from the street a clear way of not less than 5 meters in width separately for entrance and for exit, as a means of access to and from the building or buildings within the site, provided that where a site does not abut on a street the means of access to the site shall not be less than 12 meters from an existing public street.