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5.2.2 Fastening roof hooks to joists
Alternatively, the roof hook can also be used for fasten-
ing to the joist.
According to the roof hook positions shown in (Tab. 5
and Tab. 6, page 15), sufficiently strong boards must be
attached to the joists so that the roof hook can be fitted
between the joists.
i
USER NOTE
With some roof coverings it may be nec-
essary to underlay the lower part of the
roof hook (Fig. 13, Item 4) with boards so
that the upper part of the roof hook lies on
top of the tile.
B Loosen the long hexagon nut (Fig. 13, Item 2).
B Insert bolt into upper hole (Fig. 13, Item 3).
B Loosely fasten lower part of roof hook (Fig. 13,
Item 1). Do not tighten the connection yet.
SYSTEM DAMAGE
through breakage of the roof hook if the
bolt is not positioned in the upper hole, re-
CAUTION!
sulting in uneven load distribution.
B Lay front brace onto the tile so that when subjected
to a load it lies in a tile trough (Fig. 14, Item 3).
The roof hook must have some clearance along the up-
per edge of the tile (Fig. 14, Item 4). Adjust the top of the
tile if necessary.
B Push the lower part of the roof hook down until it lies
on the joist or on the boards (Fig. 14, Item 6).
i
USER NOTE
The serated washer (Fig. 14, Item 5)
must grip the teeth on the lower part of the
roof hook.
B Tighten the long hexagon nut (Fig. 14, Item 1). To do
this, insert the size 5 Allen key into the hole in the
hexagon nut and turn.
B Using suitable screws, fasten the lower part of the
roof hook into the first (Fig. 14, Item 2) and second
holes (at least) of the joist.
6 720 613 055 (2006/04)
Fitting the roof connection and profile rails
3
4
Fig. 13 Fastening roof hooks to joists
Item 1: Lower part of roof hook
Item 2: Long hexagon nut
Item 3: Upper hole for fastening the lower part
Item 4: Underlay if necessary
Item 5: Cut off if necessary
6
3
Fig. 14 Roof hook fitted (some tiles have been removed for
a better view)
Item 1: Long hexagon nut
Item 2: Screw for fastening roof hook
Item 3: Front brace
Item 4: Adjust the tile as necessary to fit the roof hook
Item 5: Serated washer
Item 6: Board
1
2
5
63043965.16-1.SD
63043965.16-1.SD
1
5
4
3
2
63043965.17-1.SD
63043965.17-1.SD
17
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