Load: Crowd load 5.0kpa: The maximum reciprocating load generated by the piston wind is 1.0kPa (considering the vertical upward and backward respectively), and the period is 120 seconds; Deflection: The allowable deflection value of platform road slab and step ladder pedal is L/200 (L is the span of road slab); The allowable deflection value of the platform support is L/125 (L is the span of bracket); The allowable height value of the platform step ladder bracket is L/200 (L is the span of bracket) Features: It is made by pultrusion process, has stable performance. The material has high strength, lightweight, convenient for transportation, and is not easy to damage. It can be cut and assembled on-site, with simple construction, fast installation speed, and high precision. The material itself has good aging resistance and long service life.