BACHELOR OF QUANTITY SURVEYING (Honours)BUILDING | SERVICES | TWO (BLD60503)August 2016 Semester

Escalator’s arrangement

1. A single escalator arrangement

o Inexpensive o Cheap method of transporting passengers between two floor levels.o Cost-effective method for transporting passengers between three floors

o Space restriction o Particularly suitable for small retail stores where available floor is limited

o Can be located at side o Only one side of decorative truss side cladding is required if against

the wall

o One direction flow only o Suitable for installations where passenger flow is in one direction.o Allow travel in both directions. o Accessible staircase required for passengers to return to the ground floor

levelo Restricts traffic flow within the buildingo In retail installations, passengers have to make a short detour to the next

escalator; strategically placed displays alongside the route of this detour can help to increase sales by encouraging impulse buying

o Passenger flow through the building is interrupted, so overall traveling time to higher floor levels is increased

2. Escalators in parallel arrangement

Maximum flow o Passenger flow within the building is maximized by moving the users

between the two floors Passenger comfort

o Increased passenger comfort in comparison to single arrangement Promotional purposes

o Both sides can be used for promotional purposes.

3. Escalators in one travel direction(interrupted traffic flow)

Cost effectiveo Cost-effective method for transporting passengers between three floors

Short detour requiredo In retail installations, passengers have to make a short detour to the next

escalator; strategically placed displays alongside the route of this detour can help to increase sales by encouraging impulse buying

Flow in one direction onlyo Suitable for installations where passenger flow is in one direction

Interrupted flow, longer distanceo Passenger flow through the building is interrupted, so overall travelling

time to higher floor levels is increased Staircase required

o Staircases are required for passengers to return to the ground floor level.

4. Multi-level scissor arrangement (continuous traffic flow)

Cost effective and efficiento Cost-effective and efficient method for transporting passengers between

three floor levels Swift movement

o Continuous arrangement allows the fastest movement of passengers over two or more floor levels, so is particularly suitable for public service buildings, office buildings or large department stores

With a single multi-level scissor escalator arrangement: Only one direction flow

o Only really suitable for installations where passenger flow is in one direction

Staircase required o Readily accessible staircases are required for passengers to return

to the ground floor level.

5. Multi-level criss-cross arrangement(continuous traffic flow)

Swift movemento Continuous arrangement allows the fastest movement of passengers

over two or more floor levels, so is particularly suitable for public service buildings, office buildings or large department stores

Reduce congestiono Reduces congestion at the landing areas by separating upwards and

downwards traveling passengers Attractive feature

o Frequently used to make an attractive feature of the escalators in the center of retail stores.

6. Multi-level parallel arrangement (interrupted traffic)

Short detour

o In retail installations, passengers have to make a short detour to the next escalator; strategically placed displays alongside the route of this detour can help to increase sales by encouraging impulse buying

Possible 2 directions flowo The possibility to reverse the direction of travel of both escalators

depending on the usage or traffic flow Interrupted flow – travelling time increased

o Passenger flow through the building is interrupted, so overall traveling time to higher floor levels is increased.

Escalators   Configurations:

Escalators have four typical configuration options:

1- Parallel 

Parallel Escalators 

Up and down escalators "side by side or separated by a distance," seen often in metro stations and multilevel motion picture theaters)

2- Crisscross

Crisscross Escalators 

(Minimizes structural space requirements by "stacking" escalators that go in one direction, frequently used in department stores or shopping centers)

3- Multiple parallel 

Multiple parallel Escalators

(two or more escalators together that travel in one direction next to one or two escalators in the same bank that travel in the other direction).

4- “Up” Escalator next to Staircase 

“Up” Escalator next to Staircase

It is preferred that staircases be located adjacent to the escalator if the escalator is the primary means of transport between floors.

Note: It may also be necessary to provide an elevator lift adjacent to an escalator for wheelchairs and disabled persons