In a multistoried hotel building the vertical circulation is totally dependent on the lifts and escalators, several lifts may be required for guests, staffs, luggage’s etc.

As hot food supply on each floor depends on the short journey for waiters because there may be one main kitchen in the hotel serving the food to the whole building.

The luggage lift should be placed near the entrance to avoid the movement of luggage in lobby. The luggage is taken by the porters and reaches guest room through the luggage lifts.

One passenger lift is required for 150 beds.

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(i) Elevators are the main transporting arteries in the modern building and are vital in determining a building’s economic success. The passenger elevators designed here to handle promptly and efficiently the transportation requirement of any type of building which means by traffic condition.

(ii) Centre door opening are recommended.

(iii) Dimensions of the buildings, machine room depends on orientation and number of hoist ways in the building.

(iv) All hoist way walls should be minimum 230mm brick or 150mm Reinforced Cement Concrete.

Features Common to All Passenger Elevators:

Cab doors can be single, double, side, or centre-opening. Except for light traffic elevators, door operation is automatic. The door is always provided with a protective edge which will reopen the door if it meets an obstruction when closing.

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Hoist way doors are similar to cab doors although, for light traffic elevators, a single, swing manually-operated door is available. All doors must be interlocked so that the car cannot be operated unless all hoist way doors are closed and locked and cab door shut.

The speed of closing, based upon kinetic energy, is regulated by code. On automatic elevators, the door-open time can be adjusted to meet requirements, but in the highly automatic systems with complex traffic control, circuits employing photo tubes determine the door-open time to accommodate the number of persons entering or leaving the car.

There is a rapid trend toward complete elimination of attendants. However, that very careful attention must be paid to the control systems if flexibility in the handling of passenger flow is to be achieved.

(i) Automatic Control System:

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This type of control is suitable for light traffic. There is one button in the car for each floor served and one button at each landing. The car travels to its deginated landing without interference until response to the first button pressed has been completed. This control will not collect a series of calls.

(ii) Non-Selective Collective system:

This type of control is practical for moderate traffic in buildings not over five stories high. There is one button in the car for each floor served and one button at each landing. All stops registered by car or landing buttons are made in the order in which landings are reached after the button is pressed, but irrespective of the direction of travel.

(iii) Selective control system:

This type of control is used in buildings of more than five stories where traffic flow is comparatively heavy in both directions. There is one button in the car for each landing served, and up and down buttons at each landing. Button pressure starts the car in its proper direction of travel.

A car going up will stop at each-up signaled floor until no further calls remain beyond the position of the same sequence hold for the downward direction.

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When the car has cleared all calls, the motor generator set will stop after a predetermined time if no additional calls are registered. Pressure on a corridor button will automatically start the motor generator set.

This type of control is applicable to groups of up to three cars. For larger buildings with heavier traffic and fluctuating traffic demands, automatic traffic pattern control can be added. This coordinates the operation of a bank of elevators and distributes service as traffic warrants, all without attendants.