Archive for October, 2007

Elevator Myths and Truths

Tuesday, October 9th, 2007

Airport Escalators Photo

MYTH: Many people believe Residential Home Glass Hotel elevators are held up by only one rope that can break, leaving passengers trapped in a falling car.
TRUTH: Elevators are supported by multiple steel cables. Each cable alone can support a fully loaded car.

MYTH: Some people believe that an overcrowded elevator will fall.
TRUTH: This will not happen. An overloaded elevator will usually not move. The doors will stay open and a buzzer may ring until
enough people get off the elevator to reduce the weight.

MYTH: Some people believe they have been in an elevator where the elevator car fell several floors and then “caught itself”.
TRUTH: This feeling is a mystery. Elevator experts believe people may think this happened because they 1) got on an elevator going in a different direction than expected, or 2) saw the elevator floor indicator lights flash by quickly which gave the visual impression of falling. (more…)

How Elevator Works

Tuesday, October 9th, 2007

Traction Lift

In a typical elevator, the car is raised and lowered by three to eight motor-driven wire ropes that are attached to the top of the car at one end, travel around a pair of sheaves, and are again attached to a counterweight at the other end. The counterweight adds accelerating force when the elevator car is ascending and provides a retarding effort when the car is descending so that less motor horsepower is required. The counterweight is a collection of metal weights that is equal to the weight of the car & containing about 50% of its rated load. A set of chains are looped from the bottom of the (more…)