Stud welding is a process used in the construction industry to anchor concrete slabs to underlying steel substructures . This process is highly repetitive and, thus, a good candidate for automation. A robotic device, the Studmaster , has been developed which will automate stud welding currently done in the construction of industrial buildings. This machine, currently controlled by a microcomput...

A mechanical study investigating the use of two different methods (grub and bolt screws) to secure external fixation half pins to circular frames. A four part experiment: (1) Grub and bolt screws were used to secure half pins in Taylor Spatial frames. Loosening torques were measured using a calibrated torque wrench. (2) Using universal testing machine (UTM), axial loading was applied to establi...

This study investigated the effects of oversized bolt holes on the properties of bolted connections with steel side members. The intent of the study was to determine (1) how well the European Yield Model (EYM) predicts experimental results for connections with oversized bolt holes and (2) how the loaddeformation behavior of connections is affected by oversized and/or misdrilled holes. Variables...

Light-gauge steel framed (LSF) walls used in low- and mid-rise buildings are usually sheathed with gypsum plasterboard to protect the thin-walled studs fire. The structural failures of these fire mostly associated local in-plane shear or pull-through at their stud-to-gypsum sheathing screw fastener connections. reductions mechanical properties cold-formed elevated temperatures significantly red...

The surrounding rock control technology of mining roadways in large inclination seams with a weak structural plane the roof is one most challenging fields underground roadway support. In view serious deformation transportation 1201 working face mine, and failure characteristics instability mechanism are analysed. self-stability mechanical model block structure under support effect established, ...