A Battery-Powered Tool to Move Utility Manhole Covers: Field Data and Proof of Concept

A new tool was designed and fabricated for workers to remove and replace electric utility manhole and vault covers. This tool, which is portable and weighs 7.26 kg (16 lb.), employs a battery-powered electric motor to raise and lower the cover, reducing the manual force. The design was based on field observations and biomechanical measurements of utility workers who moved manhole covers. Biomechanical data from the pilot study reveal the tool’s potential to reduce risk of a back injury. Field observations and data demonstrate the proof of concept, and the design will be further developed.