Section 244(2) in U.P. Building And Other Construction Workers (Regulation Of Employment And Conditions Of Service) Rules, 2009
(2)Overhead protection referred to in sub-rule (1) shall not be less than two metres wide and shall be erected at a height not more than five metres above the base of the building and the outer edge of such overhead protection shall be one hundred fifty milimeters higher than the inner edge thereof shall be erected at an angle of not more than twenty degrees to its horizontal sloping into the building.