Abstract: A truss frame with three-dimensional bracing includes at least three top rails which are joined together so as to define a substantially planar surface. A plurality of bracing members are attached to the top rails and depend toward a bottom connection which have a predetermined location with respect to the top rails. The bottom connection location is chosen so that the bracing members form truss-like braces for the top rails. In one embodiment, the top rails, bracing members, and bottom connection form the shape of a pyramid. A plurality of these truss frames is utilized to form a modular platform. The platform also includes means for fastening the top rails of adjoining truss frames together so as to form a continuous top chord in a direction parallel to that spanned by the connected truss frames.

Abstract: A modular scaffolding system includes a plurality of interchangeable structural members, each having a circular cross section. Each member also has a plurality of holes drilled in its outer surface. The holes are located in a pattern that allows flexibility in connecting other structures to the circular member. A number of members are attached together to form a frame, and a scaffold is attached to the frame by appropriate means. The components of the modular scaffolding system may be formed into a variety of configurations, including roof-based and ground-based rolling scaffolds and a trolley-suspended scaffold which moves on a monorail. A moment-arm connecting joint and a pivoting composite connection are provided for connecting the components of the scaffolding system together so that scaffold exhibits a high degree of rigidity, while also providing adjustable angles between predetermined structural members.