TLC TAS-12A, Assembly Manual

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The stairs should be assembled on excavation by at least two qualified specialists and a crane.
1. Prior to the assembly, one should determine the assembly zone in such a way that it will not interfere
with construction works and cause any danger.
2. Determine the place of stairs assembly in such a way that it will not interfere with construction works
and cause any danger
3. Determine and prepare the zone where the stairs are to be placed on.
4. Lift the stairs with a crane and put them on previously prepared ground.
5. Base the stairs on the excavation edge.
6. Immobilise the construction by anchoring and tightening the screws.
For 15- and 18-step stairs, we recommend previous determination of the stairs angle and tightening of the
screw connections with tightening around 60% of the recommended torque for a particular connector
diameter and class (see tab.5).
6. Operational conditions
The basis for the proper operation of the stairs is their appropriate setting. This primarily concerns the
proper levelling of the ground on which the stairs will be placed. Too large deviation from horizontal causes
all the steps to be set incorrectly which may cause difficulties in exploitation and the risk of accidents.
Therefore, the stairs should be periodically examined – if the ground has not moved, which would
cause stairs deviation, as well as all thread connections.
To ensure proper operation when using the stairs, at the assembly of individual components
the following steps should be performed:
•
Fix the lower part of the stairs, preventing them from shifting and lifting.
•
Fix the upper part of the stairs to make them lean against a stable edge in the form
of a block of wood or concrete.
• Tighten the lock.
The range of activities related to the adjustment and setting also includes checking and possible
tightening the bolted joints.
7. Disassembly
Before disassembly determine the safe area. Disassemble the gangway using the crane after making sure
that it is not fixed to any of the excavation edges. Stairs disassembly should be performed in reverse sequence
to the assembly. It should be performed by at least 2 qualified specialists.
8. Disposal
Packaging and worn-out tools should be stored, reused or disposed according to recommendation and
regulations that are in force at your country / region.