Abstract: Lightweight scaffolding is made of aluminum or other lightweight material. The scaffolding includes end frames with vertical and horizontal frame members, the latter having special shapes for greater strength in a vertical direction with rounded top surfaces having ridges to prevent slipping. The horizontal frame members are evenly spaced to provide rungs for workers to climb. The vertical frame members are of generally cylindrical shape with thicker portions on opposite sides, the thicker portions having flat surfaces. One portion provides a full surface to which ends of the horizontal frame members are welded. The other provides a stable surface to which an adjacent end frame can be fastened. Braces can be affixed by bolt and wing nut fasteners so that a brace can be fastened to either side of the vertical frame member. Simplified connecting pins connect vertically stacked end frames. The scaffolding also includes a base to provide added width and stability, to which base vertical frame members are affixed.

Abstract: A safety base is provided for a scaffold. The scaffold has casters so that it can be moved periodically at the job site. The safety base has two components, each consisting of an elongate bar with adjustable safety legs near the ends, along with detachable locks for readily attaching the component to frame members of the scaffolding. Feet of the legs are positioned near the supporting surface so that if the casters encounter a depression as the scaffold is being moved, the feet will engage the surface and the scaffold will not tilt excessively.

Abstract: A scaffolding platform is provided which is stronger and more resistant to damage. The platform includes two longitudinally-extending parallel rails and transverse, parallel cross rails affixed at least to end portions of the longitudinal rails. Mounting hooks for mounting the platforms on scaffold frames are affixed to end portions of the longitudinal rails by fasteners which are located on both sides of one of the transverse rails for each hook, there preferably being four fasteners for each hook. One end of each of the transverse rails has a notch to straddle the body of one of the mounting hooks between its two pair of fasteners.

Abstract: A modular platform assembly is provided. The assembly has a multiplicity of deck sections of rectangular shape which are connected together or interlocked to produce a platform of desired size. The deck sections are supported on legs which can be used in telescoping relationship to support the deck sections at various desired heights. Certain inner deck sections need only be supported on one leg, which facilitates assembly of the sections. Guard rails can also be employed around edges of the platform and supported by the legs. The legs can be supported on adjustable feet to provide a uniform level for the deck sections. Modular stairs are also provided for easy access to and egress from the platform. The stairs are designed to accommodate platforms of various heights.