Types of Scaffolding > PEWP
The first portable scissor type platform was developed in the early 1800’s as a method of spotting artillery hits and enemy positions. This towable devise was brought by horses into the field and elevated and lowered by a manual crank. Internal combustion engines were added in the 1930’s and battery power became a standard in the 1960’s.
The first boom type platforms were developed for the agricultural market, hence the term cherry picker.
From these beginnings the boom type and scissor type powered elevating work platforms have virtually become a tool of the trade on construction sites in North America. Tens of thousands of these devices ranging in heights from 15 feet to 150 feet are employed in Industrial and Construction environments every day.
These devises are regulated, in Canada, by the CSA B354 family of standards. These standards cover material, manufacture, and test criteria, as well as maintenance and operator training requirements.