A U Jack (also called a U Head Jack) is an adjustable scaffolding component used to support and level horizontal members such as beams, channels, or slabs in scaffolding and formwork systems. It is commonly used at the top of scaffolding structures to provide stable and accurate support during construction.
The main function of a U jack is to hold and support load-bearing members while allowing height adjustment. The U-shaped head cradles beams or pipes securely, while the threaded stem allows fine vertical adjustment to achieve perfect leveling.
A typical U jack consists of:
U-shaped head: Holds beams or pipes firmly in placeThreaded rod: Allows height adjustment by rotating the nutBase plate or solid stem: Provides strength and load transfer
This design ensures stability, alignment, and safe load distribution.