Handbook for Bridge Inspections - TSP2

king load capacity of at least 300 kg at maximum reach. This
will accommodate 2 persons and sufficient equipment. The bas
ket has to be fitted with automatically vertical adj ustment.
3) Manoeuvring must be possible both from the basket and the dri
vers seat in the vehicle. The basket must be fitted with an emer
gency stop device to freeze any movement immed iately.
4) There must be a fixed means of communication between the
basket and the driver's seat.
5) The vehiele should be able to move during the inspection.
6) The maximum allowable pressure from wheels and support legs
is 0.4 N/mm2. Maximum axle load of8 tons.
7) The bridge lift must be able to work from bridges with up to
10 % longitudinal slope
8) The basket must be fitted with electrical power connection and
li ght.
There are two types of bridge lifts available Ihal fulfillhese
requirements:
* Bridge lift with basket
* Bridge lift with work platfo rm.
Bridge Bascet lift
Bridge lift with ba sket is the most common type, see Figure 4.2-4
to 3.2.6. The hori zontall y distance is normally 8-1 0 m, but is
depending of how far down the basket can go and how far from the
edge of the bridge the lorry has to drive.
The largest lifts of this type has a downwards range of up to 20-25
m. NormaJl y the reach is 10 m. Most of this type of bridge li fts
may reach upwards as well, see Figure 4.2-7. A typical work diagram
for a bridge lift is shown in Figure 4.2-8
Figure 4.2-4 Small Bridge Lift with a Basket
Handbook f or Bridge Inspections
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