(C67) going through components F29, making sure that it is perfectly vertical. Proceed in the same way with
the assembly of the remaining intermediate supports N21. For the corner treads it is necessary to make the
support connection holes (N20, N21, N22, N23) according to the direction of rotation chosen. Drill the treads
(L26, L27, L28) with an Ø 8,5 mm bit to a depth of 30 mm (fig. 8).
10. Fix component F29 in the inside part of the corner treads L26, L27 and L28 with items C57 (drill with a
Ø 4.5 mm bit to a depth of 30 mm) using a C81 post as a vertical reference. (fig. 9)
11. Insert the last N22 support (with the two N24 already inserted) into the support N21. Assemble the treads with
the screws C53. Place in position the riser as previously calculated (see point 2). Unscrew component N25 as
far the floor. Insert support N23 and fit it to component N24. Mount the tread. Verify that it is horizontal and
aligned with the previous tread.
12. Check that the staircase is vertical, and if necessary correct it by moving support N23.
13. Remove the first tread and mark the position of the holes on the floor. Fix it permanently using items B99. Drill
the pavement with a Ø 14 mm bit so that the holes correspond with the holes present in support N23. Insert
the plugs C47 and fix permanently (fig. 1)
14. Stiffen the staircase at the following points:
a) in an intermediate position, insert pole G08 to the floor using items D31, C35 and B20.
b) fix the staircase to the wall using component F12 with item B13 (drill with a Ø 14 mm bit) and screws C57
(drill with a Ø 4.5 mm bit) exclusively at the points indicated.
Cover with component B95 (fig. 15).
Railing Assembly
15. Assemble elements C69, C77, F27, F28,C83, C65 to balusters C67 (fig.6) (fig. 1). Warning: line up the holes in
component F27 with the holes in baluster (C67).
16. Insert connecting balusters C67 between the treads. Orientate the balusters with component F28, with the
holed part facing upwards. Tighten items B02 to item F29.
17. Measure the distance between the three corner treads and cut a C81 baluster to fit. Use this segment of
baluster to connect the three corner treads. Assemble component F29, with items C57, to tread L25 at
a distance such as to permit the mounting of baluster C67 and at a distance from baluster C81 equal to
component F25 (fig. 9).
18. Warning: the first baluster must be cut according to the height of the other balusters. Fix component F34 to the
floor, in correspondence with the first baluster (C67), drilling with an Ø 8 mm bit. Use items C58, B12 and B02
(fig. 1).
19. Cut the handrail segments A11 to the correct size (fig. 10); assemble them with item B51 (fig. 11). To obtain
a good join, the handrail must make about 1/8 of a turn from the point of contact to the point where the lower
grooving lines up (fig. 12); if this does not happen, turn the threaded part of the handrail as much as necessary
and screw it with items B89 and B35 (fig. 13). Fix component A09 with item C43 (fig. 1).
20. Fix the handrail to the balusters (C67) with items B49; keep the balusters vertical. Cut baluster C67 to the
correct size and assemble it in component F29 with items C57 and B02. Fix component F25 with items C49
and C50 (fig. 14).
21. Insert the steel cables F26 into components C69 present on the balusters. Permanently fasten the cables to
one of the two extremities with items D37 and C76 leaving 5mm of the cable protruding from component D37.
Tighten the cables by hand and lock them with items D37 and C76. Cut off the cables at a distance of 5 mm
from item D37. Screw on cable-protection components D36. Warning: to cut the cables we advise you to use
suitable shears and to wrap the part to be cut with adhesive tape in order to make sure the cable does not
unravel.
22. To stiffen the railing, fix the wall baluster with item F09, using items F33. Drill with an Ø 8 bit and use items
C49, C50, C58 and B12 (fig. 14).
23. Complete the assembly of the handrail, inserting items C74 in the lower part of the balusters (C67) (fig. 14).
24. Apply items D27, D28 and D29 to close the lower parts (fig. 1).
25. Apply the items to close the sides D30 in the following way:
1) hook the back part to the pre-curved sheet.
2) bring it into contact with the sheet until the two elastic hooks click into the matching square holes.
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