MASTER BOOK – SECTION 1 Rev. 2007 - EKA Group

4.1 – INSTALLATION
3 - INSTALLATION
The floor installation has to be carried out in accordance with the above mentioned conditions. The slab in the
room should be cleaned with a vacuum cleaner and a layer of anti-dust paint, preferably polyurethanic or
epossidic types (because they do not alter in the time), should be applied. This procedure must be followed
when the subfloor void will be used as an air-supply/return duct.
The installation method depends on type of floor, with or without stringers. Once the layout of the panels has
been decided, the installation can start.
In order to obtain a reference point, such as a system of right angled lines, two perpendicular nylon wires are
fastened from wall to wall; to calculate their perpendicularity, Pythagoras’ theorem, or simply 3-4-5 method,
should be applied.
Point “O” of fig. 1 refers to the starting and reference point of pedestals and panels installation. Once the
structure has been installed, it has to be positioned perfectly flat. For this purpose several tools can be used: 15
metre-long spirit levels, laser levels, optical theodolite, or the more common 3 metre-long rigid levelling rods.
Once the structure has been installed, the panels installation can start too. It is advisable to start from the first
row of internal panels along the two right-angled reference wires. Make sure that there are no small piece of
panel on the floor.
For stringerless substructures, whose bases have to be glued on the slab, pedestals and panels are installed at
the same time, with constant levelling. In this case it is advisable to walk on the floor during the first 24 hours, in
order to let the glue dry out.
Once the panels and pedestals have been installed, the final stage consists of the installation of ramps, steps,
upstands and relevant accessories.
After the installation, if other refinishing touches are necessary, it is advisable to protect the floor covering
surface with cardboard or polyethylene sheets.
4- INSTALLATION TIME
The installation time of raised access floor depends on several factors:
- installer’s skill and experience
- installation tools
- dimensions, shape and access to the rooms
- type of panel and covering (lower and upper surfaces)
- type of structure
A team of 2 installers can install from 20 to 80 m ² of floor per day, depending on the above mentioned factors.
It is important to remember that a lot of time is required for the cutting and installation of the perimetral stringers
and panels.
It is advisable to give the job to skilled installers, equipped with all suitable tools necessary for a proper
installation.
NYLON THREADS
3
5
0
4
Starting and reference wires scheme,
whose perpendicularity is verified by
Pythagora’s theorem also known as the
3-4-5 method (and relevant multiples and
submultiples).
Final result of the floor grid at the
end of installation.
Rev. 01.08.07
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