Question

as an architect how do you plan a lift facility in buildings in terms of number of lifts, standards, and skyline?

Answer 1

Definition of Lifts:-

A vertical transport equipment that efficiently moves people between floors (levels, deck) of a building, vessel or other structure.

Generally powered by electric motor that drive by traction cable and counterweight systems like a hoist or hydraulic pump.

Importance of Lifts:-

1.Rapid development : buildings design nowadays built vertically/higher because of high land cost.

2.Basic needs : to bring building user from one level to higher level in building

3.Comfort needs : working efficiency for office building or large organization.

4.UBBL( Unified Building Bye-Laws) : building with more than 6 storey must provide lifts system.

5.Fire requirements : provide fire lift to be used during fire.

Lift Categories According to the Function:-

1.Trade Lift:-

- Crucial to the good performance to clients of the building. - Between 6 - 23 people. - Speed of elevator 200 - 2000 ft/min. - Examples : offices, shopping mall and hotels.

2.Hospital Lift:-

- Used in hospital & treatment center - Designed for transporting large carts or furniture. - Speed of elevator 100 - 350 ft/ min. - Two sides of front and back doors for loading and unloading facilities.

* Door width between 900 - 1100mm

3. High Residential Lift :- For high rise residential buildings such as flat, apartment or condominium.

- Needs regular maintenance because high frequency of its use everyday or possibility of vandalism.

4. Institution Lift :- Used in library, office, classroom or lecture hall located at high altitudes

5. Store Lift:-

- Used to transport heavy goods but depends on types of good transported.

* Elevator speed 50 - 150ft/min. - 5000 lbs normal, load haul 20000 lbs. - Usually used in shopping complex, airports, hotels, warehouse.

Lift of Cars

- Used specifically to lift a car in multi

storey car park or showroom.

waiting time for different types of buildings:-

For design of lifts factors to be considered are -

1. Population or no. of people who require lift service.

2. Handling capacity or maximum flow rate required by the people.

3. Interval or quality of service required.