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Elevators and Conveying Systems
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Elevators and Conveying Systems
Mechanical Systems
Study
1
Question
What is the primary function of HVAC systems?
Answer
To improve indoor air quality and control the environment. They consume about 39% of a building's total energy.
2
Question
Name the two major categories of HVAC systems.
Answer
Ducted and Ductless
3
Question
Give an example of a ducted HVAC system common in residential buildings.
Answer
Split system
4
Question
What is a key advantage of overhead conveyors?
Answer
They free up valuable floor space by moving conveying systems above work areas.
5
Question
What is the function of an elevator?
Answer
A vertical transportation device that moves passengers or freight between levels of a multistory building.
6
Question
Name three parts of an elevator.
Answer
Landing, Cab/Car, and Hoistway
7
Question
What is the purpose of the hoistway door?
Answer
It remains closed when the elevator is not at the landing and only opens when the elevator car arrives at that floor.
8
Question
What is the purpose of a penthouse/machine room in an elevator system?
Answer
A dedicated space at the top that houses the elevator machine that turns the sheave.
9
Question
What is the function of conveying systems?
Answer
To transport people, materials, or goods from one place to another.
10
Question
Name three common types of conveying systems.
Answer
Belt conveyors, Gravity roller conveyors, Overhead conveyors
11
Question
What are Traction Elevators?
Answer
Used in MEDIUM TO HIGH-RISE BUILDINGS and operate using steel cables, a counterweight, and a sheave pulley to move the elevator car.
12
Question
What are Geared Traction Elevators?
Answer
Use a worm and gear system to reduce speed and increase torque, ideal for medium-rise buildings up to 350 ft. They are cost-effective but need regular maintenance due to gear wear.
13
Question
What are Gearless Traction Elevators?
Answer
The motor connects directly to the sheave, ideal for high-rises 250 ft. They offer a smoother ride, lower maintenance, and energy efficiency but have a higher initial cost.
14
Question
What are MRL Traction Elevators (Machine Roomless)?
Answer
House equipment within the shaft, saving space and reducing costs. Available in geared and gearless versions, they are popular in modern buildings.
15
Question
What are Hydraulic Elevators?
Answer
Ideal for LOW-RISE BUILDINGS typically up to 6 stories, they use a plunger and hydraulic fluid to lift the car. They dont require penthouses or counterweights, making them space-efficient.
16
Question
How does a Traction Elevator facilitate vertical movement?
Answer
Employs ropes or cables in conjunction with a motor-driven pulley system to facilitate the vertical movement of the elevator car.
17
Question
How does a Hydraulic Elevator facilitate vertical movement?
Answer
Uses a mechanism that involves cylinders filled with fluid and a pump to facilitate the vertical movement of the elevator car.
18
Question
What are Standard Service Elevators?
Answer
Used in office buildings, typically one service car per ten passenger cars. They have wider doors 122137 cm or 4854 in. to accommodate furniture and large loads.
19
Question
What are Hospital Elevators?
Answer
Designed to accommodate gurneys, wheelchairs, beds, linen carts, and medical equipment. They have extra depth and higher weight capacity than standard elevators.
20
Question
What are Retail Store Service Elevators?
Answer
Found in department stores and malls, providing vertical transport for staff and individuals unable to use escalators.
21
Question
What are Observation Elevators?
Answer
Glass-enclosed cars designed to offer panoramic views. Common in public attractions and commercial buildings.
22
Question
What are Inclined Elevators?
Answer
Travel along a diagonal path on rails, often used in monuments or hilly terrains e.g., the St. Louis Gateway Arch.
23
Question
What are Rack and Pinion Elevators?
Answer
Move on a rack-and-pinion system, often used in industrial environments or emergency evacuation e.g., Statue of Liberty's emergency evacuation elevator.
24
Question
What are Platform Lifts?
Answer
Compact, space-efficient lifts designed for short travel distances, typically up to 12 ft high. Used as an alternative to full-sized elevators.
25
Question
What are Residential Elevators?
Answer
Small-scale private elevators for homes, with custom interior designs and concealed safety locks.
26
Question
What is Car Elevator?
Answer
Moves cars vertically between floors of a building
27
Question
What is a CargoFreight Elevator?
Answer
An elevator designed specifically to transport heavy goods rather than people, typically used in warehouses, factories, and distribution centers.
28
Question
What is a Dumbwaiter?
Answer
A small elevator that moves items between floors, often used to carry food and dishes.
29
Question
What are Limited Use/Limited Application (LULA) Elevators?
Answer
Smaller, low-rise elevators used in schools, libraries, small businesses, and multifamily housing, which use a roped hydraulic drive system.
30
Question
According to Section 1302 of PD 1096 regarding elevators, what is the requirement?
Answer
Elevators shall be installed in all private and public buildings for public use accessible to disabled persons, pursuant to the objectives of Batas Pambansa Bilang 344 Accessibility Law.