Dolle LOFT LADDER 설치 지침 - 페이지 6
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Figure 2
are required. If you fit the attic ladder at right angles to the
joists, you will need to make double transverse joists of the
same size as the existing ceiling joists.
WARNING: If the ceiling joists are made in a material other
than timber, e.g. steel, contact a qualified craftsman. Ne-
ver saw through a load-bearing joist without advice from a
qualified craftsman. Take great care when sawing ceiling
joists. For safety's sake, if there is no attic flooring, lay planks
a cross the ceiling joists to allow safe passage in the attic
during installation.
4. Fitting temporary supports:
To keep the attic ladder in place in the ceiling opening during
installation, you are advised to fit temporary supports. If the
trapdoor will be clad, the attic ladder must be fitted as many
mm higher in the opening as the thickness of the cladding.
Figure 3
Figure 4