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Unpack each element before starting to assemble the staircase. Position the elements on an ample surface and
check the number of parts against the attached parts list.
Assembly
1. Carefully measure the height from floor to floor (H) (Fig.2).
2. Carefully measure the floor opening (F) (Fig. 2).
3. Calculate the value of the going (P):
for the versions with a tread width (L) of 67 - 74 cm and a step of 19-22.5 cm:
a) Subtract the following dimensions from the floor opening (F) value obtained:
1) final tread, select one of the two possible measurements: 29 and 26.5 cm;
2) corner treads;
3) distance from the wall 3 to 6 cm.
b) Divide this value by the remaining number of treads.
Example: for a floor opening of 228 cm and a staircase with a tread width (L) of 74 cm:
228 - 29 - 68 - 3 / 6 = 21.33 cm.
for the versions with a tread width (L) of 74 / 81 / 88 / 95 cm and a step of 22.5-26 cm:
a) Subtract the following dimensions from the floor opening (F) value obtained:
1) final tread, select one of the three possible measurements, 32, 29, and 26.5 cm;
2) corner or landing treads;
3) distance from the wall 3 to 6 cm.
b) Divide this value by the remaining number of treads.
Example: For a floor opening of 324 cm and a staircase with a tread width (L) of 88 cm:
324 – 29 – 82 – 5 / 8 = 26 cm.
4. Calculate the value of the average rise:
a) Subtract 20 cm (height of first rise) from the floor to floor height (H) previously measured.
b) Divide this value by the number of rises less one.
The value obtained must be a number between 18 and 23 cm.
Example: for a measured height of 275.5 cm from floor to floor and a staircase with 14 rises;
(275.5 - 20 / (14 - 1) ) = 19.65 cm (Fig. 2)
5. Determine the number of plastic spacers 031078.
a) To determine the total number of spacers 031078 in relation to the number of staircase rises and the
height from floor to floor (H), refer to Table 2 (H = height, A = rise).
Example: for a measured height of 275.5 cm from floor to floor and a staircase with 14 rises.
In correspondence to 276, in the row A=14 the number of plastic spacers given is 41.
The staircase structure is composed of three different types of support:
1) end support 116012 and 116022 to fasten the staircase to the top landing floor
2) intermediate support 116002 and 116004, respectively with two different step measurements, 19-22.5
cm and 22.5-26 cm, depending on the configuration chosen.
Warning: for the versions with a tread width (L) of 74 and 81 cm and a straight tread step of 22.5-26 cm, the
intermediate supports have a step of 19-22.5 cm in correspondence to the corner treads.
3) base support 116006 for fastening the staircase to the floor (Fig. 1).
Distribute the plastic spacers 031078 in sequence starting from the base support 116006, where provision
has been made on the supports, until they have all been used up.
b) To calculate the number of plastic spacers if the required number of rises is not indicated in Table 2:
calculate the value of the average rise;
subtract 18 cm (minimum rise height) from the average rise value;
multiply this value by the number of rises less two;
divide the result by 0.5.
Example: for a measured height of 275.5 cm from floor to floor and a staircase with 14 rises, the average
value of the rise is:
(276 - 20/ 14 - 1) = 19.69 cm (the value obtained must be a number between 18 and 23 cm).
(19.69 – 18) x (14 - 2) / 0.5 = 40.32 = 41.
Distribute the plastic spacers 031078 in sequence starting from the base support 116006, where provision
has been made on the supports, until they have all been used up.
6. Determine the number of end, intermediate and joining balusters (Fig. 1) (Fig. 8).
Warning: take into account that the length of the rods provided cover the railing over a maximum of three
treads. Consequently, a joining baluster (z) should be fitted every three treads.
a) End baluster assembly (x): fit the part 011071 in the hole of the baluster 127031 or 127035 on the
countersink side. From the other side fit the part 033159 and then the part 031096 and screw on.
Fit the part 033158 into the balusters 127031 or 127035 with the hole on the countersink side and finally
tighten them (the parts 001027 and 001028 are already fitted in the part 033158 as shown in Fig. 1).
Fit the part 033078 into the part 033158. Screw on with the part 011072.
8 - Genius 050 - 060 RA
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