The Powertower is based on a James Thomas Engineering 30.5cm self-climbing tower system with the addition of a lightweight, bolt-together, aluminium base with a footprint of 2.65m squared. The base also incorporates the ballast trays, housing a series 25kg test weights and eight adjustable leveling jacks for easy and safe positioning of the tower. Powertower is configurable in a variety of shapes and forms, and can be used in goal-post format for suspending video screens, for heavier screens, the base can be built with dual tower goalposts, doubling its lifting capacity.
Lifting trusses is achieved in the standard manner of self-climbing towers, with the addition of in-built load arrestor points at the pick-up head, so the secondary suspension point can be attached at ground level. A change of trim height can also be achieved quickly and simply without requiring a rigger to climb the tower and release safety cables. The Powertower base is finished with a custom fitted canvas shroud for neat presentation.
(Sarah Rushton-Read)
