Modular scaffolding platform and truss frame components therefor

A truss frame for a modular scaffolding platform, comprising:

• at least three tubular top rails, said rails being joined together so as to define a substantially planar surface;
• means by which at least one top rail of the truss frame may be readily detachably connected to at least one top rail of an adjoining truss frame when two or more of said truss frames are connected together to form a platform, said rail-connecting means being disposed so that, when said truss frames are connected together in said platform, the top rails of said connected truss frames form a continuous top cord in a direction parallel to that spanned by said connected truss frames, and so that said connected truss frames exhibit high torsional rigidity;
• a plurality of bracing members attached to and depending from said top rails, said members being disposed so that all of said members are connected together to form a bottom connection which has a predetermined location with respect to said top rails, said predetermined location being chosen so that said bracing members form truss-like braces for said top rails;
• and
• means by which the bottom connection of said truss frame may be connected to the bottom connection of an adjoining one of said truss frames when two or more of said truss frames are connected together to form a platform, said bottom connection including means for readily detachably receiving bottom connection joining means such that said joining means may be connected to and detached from said bottom connection without requiring disconnection of the top rails of adjoining truss frames, said joining means being disposed so that, when said bottom connections are joined together, a bottom chord is formed which extends in a direction parallel to that spanned by said connected truss frames.