LU/LA elevator. A chair or mounted on a steel guide rail and driven by an electric motor ,used for raising or lowering a person or goal along a stairway also called stair lift. Inclined lift. An elevator system consisting of a car supported by a piston that is move by or move against a fluid under pressure.
Expert Answer. Question 14 (15 points) A large freight elevator can transport a maximum of 11,500 pounds. Suppose a load of cargo containing 64 boxes must be transported via the elevator. Experience has shown that the weight of boxes of this type of cargo follows a distribution with mean y = 185 pounds and standard deviation o = 18 pounds.

Re: A certain elevator has a safe weight limit of 2,000 pounds. [ #permalink ] Tue Mar 11, 2008 3:54 pm. 3. Kudos. Lets assume there are 2X people. Half of them have average weight of 180 and other half has 215. Maximum Weight is = 2000. So 180*X + 215*X = 2000. => 395X = 2000.

Stair lifts can have weight capacities up to 400 lbs and can be customized in a number of ways for increased accessibility. Some states limit the use of stair lifts

A large freight elevator can transport a maximum of 10,000 pounds (5 tons). Suppose a load of cargo containing 45 boxes must be transported via the elevator. Experience has shown that the weight Y of a box of this type of cargo follows a probability distribution with mean μ=200 pounds and standard deviation σ=55 pounds. ISO 4190-5, Lift (Elevator) installation ? Part 5: Control devices, signals and additional fittings; ISO 8100-30:2019, Lifts for the transport of persons and goods ?Part 1: Safety requirements for passenger and goods passenger lifts The 104-story 1 WTC—which opened for tenants in November—has 71 elevators, five of which will be express elevators with a top speed of more than 36.5 kilometers per hour. Outlining existing problems in A17.1 and EN 81-20. by Guangchi Liang. Modern elevator safety highly depends on the elevator braking capacity. Braking failure will lead to car overspeed or unintended car movement (UCM) with the car door open, increasing the risk of death or serious injury to an unacceptable level.
First, let's define the variables: Let x be the number of children and y be the number of adults in the elevator. We are given that the total weight of the people in the elevator should not exceed 2000 pounds. We can assume that the average weight of a child is 50 pounds and the average weight of an adult is 150 pounds.
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