A brace for converting an extension ladder into a stepladder. The brace comprises a pair of spaced clamping members for securing two diverging extension ladder sections. The clamping members comprise a pair of rods having U-shaped clamps at each of their ends. The pairs of rods are secured by channel sections. An adjustable device for rigid bracing of the ladder sections is provided.

Scaffold mounting structure for mounting a longitudinally extending scaffold deck to a raised framework including a pair of scaffold deck fastening members constructed to be mounted to a scaffold deck end so as to allow a scaffold deck rung to be readily assembled and positioned proximal the scaffold deck end to enhance scaffold stability.

A conveying system for trestle frames of scaffolds to be utilized and transported as well as stored in an upright position. The conveying system included holding rails of a rack-like structure, with the rails being arranged in pairs and engaging with teeth thereof beside ends of scaffold tubes and, respectively, lower cross connections of the trestle frames. The conveying system also includes lower holding rails provided with receiving recesses for cross connections of the trestle frames. The trestle frames can readily be threaded in place and the transport pallets can be taken up by forks of forklift truck through apertures provided in the trestle frame, with the apertures enabling the forks to be inserted in the longitudinal and transverse directions thereby facilitating handling and transportation of the transport pallets by forklift trucks.