Section 200(a) in The Orissa Building and Others Construction Workers (Regulation of Employment and Conditions of Service) Rules, 2002
(a)no trestle scaffold is constructed with more than three tiers or if its working platform is more than four point five meters above the ground or floor or other surface upon which such scaffold is erected, such trestle scaffold is designed by professional engineer and has the approval of Chief Inspector before being taken into use;
