Vertical Transportation

Question 1

What is better to move more people an elevator or an escalator?

Answer 1

Escalator

Question 2

Are hotels able to service escalators?

Answer 2

No, because they can cause accidents

Question 3

What are the four types of escalator maintenance?

Answer 3

1. General cleaning
2. Lubrication and Inspection, repair and replacement of non-operating parts
3. Full maintenance
4. Safety: controlled stop

Question 4

Name the three types of elevators

Answer 4

Passenger/Service: For people

Freight elevator: For moving heavy and large things. Also is slower and uses a Hydraulic type

Dumbwaiter: Small things like Plates NOT PEOPLE

Question 5

Describe the 4 elevator mechanical systems

Answer 5

Hydraulic
Geared Traction
Gearless Traction
Standard escalator

Question 6

Describe how a hydraulic elevator works

Answer 6

MOST COMMON TYPE OF ELEVATOR
[HOTEL RULE] 4 story cap on Hyrdraulics

Uses displacement to have the oil pump displace the piston pushing up the the elevator [NO CABLE]

Does not go up many floors(up to 7), slower than traction, but less expensive than traction

Machine rooms are typically located next to the bottom-most entry point

Question 7

Describe Traction elevators and the difference between geared vs gearless

Answer 7

Uses a large thick cable to hold the car and a motorized sheave that moves it up and down

Geared goes up to 24 stories

Gearless goes over 24 Stories (Mainly used for
skyscrapers), Also fastest,

Question 8

What are the three elevator descriptors

Answer 8

Capacity: Typically expressed in weight never expressed in people

Speed: Typical range of 100fpm to 1,400fpm

Travel: number of stops an elevator makes and elevator’s “rise”

Question 9

Where is the machine room located for a traction elevator?

Answer 9

Top of the building

[Nowadays we can build “machine-roomless systems now]:
The Sheave can contain it all

Question 10

What are the 8 things elevators must have?

Answer 10

1. No load test 1 X 1 year
2. Full load test 1 X 5 year
3. A: Firefighter’s Service
4. B: Call/Help Buttons
5. C: Emergency Stop Button
6. Leveling
7. Door Sensors
8. Catastrophic Cylinder Failure

Question 11

In general, a hydraulic elevator uses __ times more/less electricity as traction

Answer 11

Uses three times more electricity than traction

Question 12

Why do hydraulic elevators pose a potential enviroinmental