Which mechanism describes a gravity connection?

• A. Bead welds
• B. Glue
• C. Gravity weight of upper structural elements to hold them together
• D. Poured concrete over steel

Answer: (C)

Gravity connection relies on the weight of the upper member to keep the joint in place without using fasteners or adhesives. The vertical load from above presses the components together, creating friction and compression that resist separation. This is different from bead welds (which use welding as a binding method), glue (an adhesive bond), or pouring concrete over steel (which creates a monolithic, integrated section rather than a gravity-based, load-pressing connection). So the mechanism described is the gravity weight of upper structural elements holding them together.