sentence: Hydraulic lifts are usually slower than traction lifts.
sentences_before: The technology used in new installations depends on a variety of factors. Hydraulic lifts are cheaper, but installing cylinders greater than a certain length becomes impractical for very high lift hoistways. For buildings of much over seven stories, traction lifts must be employed instead.
concept_name: hydraulic lift
headings: Elevator Design
categories: Construction