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"UNIVERSAL MAXI" INSTALLATION INSTRUCTIONS
To ensure that the staircase is assembled correctly, we suggest that all equipment is on-hand before starting.
Remove all staircase components from the packing and lay them over a wide surface to be all clearly visible.
Reading: L = width
A = rise
P = going
HT = Total height
All dimesnsions are in centimeters (cm).
STAIRCASE ASSEMBLY:
1) Calculating the rise (A)
Measure the height between the bot tom floor and the staircase landing f loor HT (Fig. 1).
The rise must always be contained between 17.5 and 24cm.
Calculate the staircase rise in the following way: subtract the fixed height of the first rise of 18.5
from the total height HT, then divide the result by the number of steps.
For example: (280-18.5) : 12 = 21.8 (landing step below floor)
If you want the last landing step to be flush with the floor, divide the total height, excluding the first rise, by the number
of steps less one.
For example: (280-18.5) : (12-1) = 23.8 (landing step flush with floor)
2) Calculating the going (P) in the "L=75 P=18/22 configuration"
Measure the length of the opening marked X concerning the last flight. (Fig. 2).
Calculate the going dimension in the following way: subtract from the X opening size the fixed going dimension of
the last step (25), the winder edge dimension of 71 and a wall margin of one centimeter, then divide by the number
of flight steps less one.
The sum of the calculation must give a going dimension between 18 and 22 inclusive.
For example: (177-25-71-1) : 4 = 20
3) Calculating the going (P) in the "L=94 P=22/26 configuration"
Measure the landing side of the opening marked X (Fig. 2).
Calculate the going dimension in the following way: subtract from the X opening size the fixed going dimension of
the last step (29), the winder edge dimension of 89 and a wall margin of one centimeter, then divide by the number
of flight steps less one.
The sum of the calculation must give a going dimension between 22 and 26 inclusive.
For example: (215-29-89-1) : 4 = 24
4) Fixing the staircase to the slab
Assemble the top support by orientating the plate in relation to the type of landing (below floor = vertical or flush with
floor = orizontal) and insert the spacers in relation to the type of step (Fig. 3).
Determine the position of the landing support plate in the slab, keeping to the previously calculated rise and ensuring
the correct levelling of the step (Fig. 4).
Drill the plate holes with a Ø 14 mm bead and mount the support to the slab by using the expansion tie-rods.
5) Staircase assembly
Assemble the intermediate supports by setting the previously calculated going and fix them to the steps at the punch
holes by using the self-tapping screws, which will have to be hidden by the supplied covering caps (Fig. 5). The
second winding step has to be orientated according to climbing way of the staircase.
(NB: the support must always be placed orthogonally to the rear of the step).
Mount the steps in sequence adjusting the rise between them and fasten them with the screws, without permanently
tightening them. (permanent tightening should be carried out without using excessive pressure).
The winder support and adjacent step treads are shown in the diagram (Fig. 2).
Place a temporary support underneath the stair at every fifth step, in order to hold it until it is permanently mounted.
6) Mounting the staircase to the floor
Having completed the sequence of step/support assembly, ensure that the staircase is precisely positioned in relation
to the well and then check the correct levelling of the treads. Subsequently, mark the plate mounting points on the
floor, bore with a Ø 14 mm drill and mount the plate to the floor with the expansion tie rods.
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