Description
The scaffolding base jack (screw jack) is used as a starting base for a scaffold, which provides stability by adjusting the base jack nut on uneven ground.
A base jack is used to hold scaffolding in place horizontally. The adjustable screw jack is mounted on a stable base and contains a large adjustable screw for moving scaffolding up and down. After scaffolding is built, use base jack scaffold to level the working platform before use
Screw jacks must be used to level scaffolding on uneven surfaces. The maximum extension for a screw jack is 18 inches high. Most screw jacks will have a built-in stop so that the maximum height cannot be exceeded. (For mobile scaffolds, the maximum height of the screw jack is 12 inches.)