Section 4(3)(i) in Andhra Pradesh Municipalities (Licences For Projections and Lease of Road Sides and Street Margins) Rules, 1969
(i)the drain covering in the case of premises abutting on the street shall be 0.16 metres to 0.32 metres in thickness for drain. In the case of premises with a compound in front where heavy vehicular traffic is likely to pass over the drain, the covering may be granite or reinforced concrete slabs of the following thickness: