283757893275

Lifts and Escalators 521
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Wheelchair only or wheelchair plus attendant(s)?
Goods only or goods and passengers
How many lifts are required?
How many floors need to be served (and the maximum travel distance)
Door type
Type of lift car door is specified by side or centre opening, and this will determine the size
of the lift shaft. Lifts usually have lift car doors and landing doors, and it is common practice
to use the same door opening types:
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Single panel (side opening)
Two panel side opening
Two panel centre opening
Entrance/exit position
There are three entrance/exit configurations, shown in Figure 9.3:
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Front only. This is the smallest well and lowest cost.
Front and rear. Increases shaft size and cost.
Adjacent entrances. Available on some models. This will increase shaft size and cost.
Clear entrance width (e.g. 900 mm) and height (e.g. 2000 mm) will need to be
specified.
Mounting
There are two main options: structure supported or wall-mounted lifts (Figure 9.4).
The structure supported lift tends to be cheaper to build because the loadbearing wall
and associated lifting beam are not required. However, this needs to be offset against a
higher lift cost (10–20% more than a wall-mounted lift) and a slightly larger shaft size. In
the majority of cases scaffolding is not required, which helps to save time and cost. Structure
supported lift structures are typically used for goods lifts, trolley lifts, service lifts and
vertical platform lifts.
Front only Front and rear Adjacent
Figure 9.3 Entrance/exit positions.