Page 10
BEFORE YOU START
PREPARATION
The floor area must be clear of any obstructions including materials and debris. Check that you have all the
components necessary to construct the tower height you require. Check also each component for condition and
correct function. If any part is missing or damaged/not working correctly it must be replaced before assembling.
Assess the height of tower required before attempting assembly. Refer to component matrices on page 6
for the correct component quantities and if required, ballast for the chosen platform height. Please note working
height is generally calculated as two meters above platform height.
3T (THROUGH THE TRAPD OOR) SYSTEM
The 3T method of construction has been developed to reduce the risk of an erector falling from a tower during
construction. The erector must sit on the platform with legs through the hatch and feet on the frame rungs
when attaching guardrail brace panels above the platform. This ensures the erector is always protected by a set
of guardrail brace panels.
TYING IN
You should consider tying in the tower to add stability, but this may only be carried out by a suitably
trained person.
BALLAST
Where shown in the component matrices, ballast must be used to stabilise against overturning. Only use solid
materials as ballast (i.e. no loose materials) and position to avoid overloading individual components. Ballast
should be attached to the horizontal rungs of your MI TOWER STAIR and be either securely fastened or be of a
design to prevent accidental removal. An example of such ballast is shown below. The quantity of ballast is
shown in the component matrices on page 6.
ASSEMBLY GUIDE
These instructions must always be made available to the user. If replacement copies are required, please contact
your supplier. This assembly guide is to be made available on the location of use of this MI TOWER STAIRS.
DAMAGED COMPONENTS
Regularly inspect all components for damage. Damaged components must be quarantined so that they cannot
be used. Where safe to do so, the component can be repaired but only by a qualified repairer. If in doubt
contact your supplier for advice.
DISMANTL ING YOUR MI TOWER STAIRS
MI TOWER STAIR is easily dismantled by simply reversing the erection procedure. Make sure that the component
hangers are evenly loaded to ensure your MI TOWER STAIRS remains balanced. You must, however, be protected by
guardrail brace panels when standing on any platform and ensure that you use the 3T method when removing
guardrail brace panels.
AFTER ASSEMBLY
After assembly the following information needs to be displayed on the access tower and should be clearly visible
from the ground (e.g. on a Scafftag).
The name & contact details of the responsible person
If the tower is ready for application or not.
The load class and Uniformly Distributed Load.
If the access tower is intended for indoor use only.
The date of assembly.
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