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5.2.3 Wooden ceiling
Quick bracket
Note! Rails must not be mounted to a wooden ceiling with tension screws, such as coach screws.
In some cases, mounting to a ceiling timber work may be an alternative to mounting to wall or wall support.
This is provided that the ceiling timber work is accessible from above. When being mounted in the ceiling timber
work, exchange should be placed as reinforcement. When reinforcing, it is important to select exchange wood
that is dimensioned to tolerate the distance between two ceiling beams, so sufficient carrying capacity is achieved.
When having marked up to all ceiling brackets in the ceiling, you should examine whether there is free space above
the ceiling material. When this is done, holes with a diameter of Ø12.5 mm are drilled through the ceiling material.
The holes may now be localized from above, the can be prepared for the exchanges, and you may measure
how long the threaded rods should be. The exchange should cover at least 2 ceiling beams on each side of the
suspension point. When using exchanges, two 45x95 mm should be placed parallel to each other, at a distance of
14 mm, providing a passage for an M12 threaded rod. For determining the length of the threaded rod, determine
the ceiling beam's height + length of exchange wood + ceiling material + 60 mm for washer and nuts.
Place the adapted threaded rod between the exchange wood and put in a washer and nut before the threaded
rod is guided further down through the ceiling and position it with an aluminium plate, a tightening washer and nut
over the exchange wood. The aluminium plate is screwed into the exchange wood from the top. Let approx. 25
mm threaded rod protrude down under the ceiling material. A Quick ceiling bracket may now be screwed onto
the threaded rod beneath the ceiling material. The ceiling bracket is fastened with an M12 low nut. The threaded
rod is to be screwed entirely through the nut, but must protrude further down that below the fitting.
When mounting the bracket and nut, it is important to use adhesive on bracket as well as nut. When all brackets
are mounted, lift up the rail, adjust the length and secure it. Before the rail is fastened up to the ceiling, which is
done from above the ceiling, it should be checked that the exchange wood is resting on both ceiling beams. If not,
something should be placed between.
The nut over the exchange wood is now secured carefully until the bracket lies evenly with the ceiling material. It
is important not to tighten so much that the ceiling material is pulled up between the ceiling beams. When this is
done, a steel plate is placed in around the threaded rod below the exchange wood, and the nut is secured up into
the steel plate, thus locking the position.
Finally, a lock nut is secured against the nut on the upside of the exchange wood.
Trolleys, end stop and rail end plugs are mounted as described in section 5.2.1.
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