Recommendations for the Safe Use of Mast Climbing Work Platforms

Mast climbing work platforms, also known as mast climbers, are becoming more and more common on U.S.

construction sites. Mast climbers have a power-driven work platform that climbs a vertical tower, allowing

them to reach much higher and carry greater loads than traditional scaffolds. Although they were available in

the U.S. in the 1980s, they became more common in the early 1990s when contractors began using them as an

alternative to traditional tube-and-coupler scaffolds.