Section 104(6) in The Kerala Panchayat Buildings Rules, 2011
(6)Walks and paths: Walks shall be smooth with hard level surface suitable for walking and wheeling. Avoid grates and manholes in walks. If grates cannot be avoided, then bearing bar shall be perpendicular to the travel path and opening between bars shall not be greater than 12 mm in width. The walkway shall not cross vehicular traffic.