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1. AR 503 - BCM ELEVATORS

2. Elevators/Lifts Type of vertical transport equipment efficiently moves people or goods between floors (levels, decks) of a building, vessel or other structures. Generally powered by electric motors that D rive traction cables Counterweight systems like a hoist, P ump hydraulic fluid to raise a cylindrical piston like a jack. Classified as either E lectric traction type Hydraulic type Traction elevators are most often used in mid-rise and high-rise buildings with five or more floors. Hydraulic elevators are commonly found in low-rise buildings with two to five floors or six stories.

3. Types of Elevators/Lifts according to function Passenger lift It works using a lift cab for the passengers to access and travel on, raising vertically between floors. It’s rather than bespoke so follows a well-established method of creating lifts and will suit a wide variety of needs.

4. Types of Elevators/Lifts according to function Hospital lift This elevators are distinguished by wider doors and larger platform sizes to allow faster, more secure of people and equipment. Commonly used at hospital

5. Types of Elevators/Lifts according to function Panoramic lift : View of the artistic style and the surrounding sights in riding the elevator. It usually has a glass door, or is entirely made of glass, and can be situated either inside or outside of buildings.

6. Types of Elevators/Lifts according to function Goods lift Used for lifting & lowering of gifts and can carry up to three tons of load at one go.

7. Types of Elevators/Lifts according to function Service lift Commonly used at hotels, restaurants and other food service to make sure the food gets to the customer piping hot and without getting dropped on the stairs

8. Types of Elevators/Lifts according to function Car lift Usually used in parking garages and car repair. Lift is built in accordance with the maximum size and weight of the car.

9. Advantages of Elevators Suitable for high-rise building Vertical transport that efficiently moves people or good between floor of a building Safest mode of transportation Faster mode of vertical transportation for lengthier vertical distance Statistic shows lesser risk of injuries/accident Traction lift more faster than hydraulic lift Convenient – does not take much space except for the maintenance room Elevator doors protect building tenants from falling into the shaft Hydraulic mechanism is cheaper, but installing cylinder greater than a certain length becomes impractical

10. Disadvantages of Elevators Expensive to maintain In case of malfunction, need to use other mean of transportation Longer waiting period especially heavy traffic Lesser capacity to transport people and good at a certain time Hydraulic lift is slow movement

11. Traction elevators An elevator car and counterweight attached to opposite ends of hoist ropes . The hoist ropes pass over a driving machine that raises and lowers the car. Traction elevators run on load-bearing rails in the elevator hoist way.

12. Hydraulic elevators Raised by forcing pressurized oil through a valve into a steel cylinder located above ground or underground. The pressure forces a piston to rise, lifting the elevator platform and car enclosure mounted on it. The car is lowered by opening the valve and allowing the weight of the car to force oil from the cylinder in a controlled manner. When the valve is closed the car is stopped. Since the weight of hydraulic elevator cars is borne by the piston, there is no need for a structural framework or load- bearing rails

13. Design and Layout considerations The main design considerations for choosing either electric traction drive or hydraulic for a particular project are the number of floors, the height of the building, the number of people to be transported, desired passenger waiting times and frequency of use. The major components were machine room, cabs and hoistway /pits.

14. Design and Layout considerations Other parameter in design of elevator includes: i . Characteristics of the premises a. Type and use of building b. Floor plate size and height of the building c. Size of population and its distribution in the premises d. Fire safety and regulations e. The house keeping of the premises f. Comfortable g. Aesthetics value

15. Design and Layout considerations ii. Circulation efficiency/performance a. Number of cars and their capacity b. Location and configuration of elevators in entrance lobby c. Travel length, number of stops and maximum acceptable waiting time d. Arrangement with the combination of elevator, escalator and emergency stairs

16. Design and Layout considerations iii. Characteristic of the equipment a. Type of transportation systems b. Rated load and car dimensions c. The speed of the lift/escalator system d. The type of motor drive control system of the machine e. Mode of group supervisory control and safety features f. Cab enclosure and hoist way door finishes g. Emergency power supplies and fire protection systems h. Requirements of the local regulations on vertical transport system i . Zoning of elevators j. Elevator doors

17. Design and Layout considerations

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20. Design and Layout considerations Quality of Service