The 150 attachment beam becomes the base for the attachment of the Multispan gable unit. Figure 7 shows a unit attached at
the side.
7
CHANNEL
EXTENSION
MULTISPAN GABLE ATTACHED AT THE SIDE
WEB
OVERHANG
STUD WALL
TIMBER RAFTER
150 ATTACHMENT BEAM FIXED TO
RAFTER BRACKET WITH TWO
M12 BOLTS
GUTTER
150 ATTACHMENT BEAM
EAVES OVERHANG
BRICK WORK
RAFTER STRENGTHENING BRACKET
ATTACHED TO RAFTER WITH
6 (M12 HEX HEAD BOLTS)
RAFTER
EAVES PURLIN
FIXED TO
RAFTER USING
14 x 95 SCREWS
To insert spacers drill 11 mm holes through the 150
attachment beam. Then drill 16 mm holes on the outside
face only, ie, this time do not drill all the way through. This
will allow the spacer to slide in from the outside and stop at
the other side as shown in figure 8.
6
8
150 ATTACHMENT BEAM
SPACER
NUT
RAFTER
STRENGTHENING
BRACKET
M12 BOLT
DOUBLE FLANGE
ENLARGED HOLE
(16 MM THIS SIDE ONLY)
11 MM HOLE
WASHER
You would have ordered and received your custom made
flashings to cover the exposed brackets and holes through
fascia. Rivet flashings in place, figure 9 suggests a
simplified flashing. You may however use your imagination
and design a flashing that suits your individual taste.
Note:
It is the builders responsibility to ensure the existing
rafters and fascia are adequately reinforced and
strengthened to accommodate any additional attached
structure. The reinforcing method must be approved by the
appropriate council or engineer.
If fixing a Multispan Gable on its end to a wall, two
alternatives are available. Purlins are fixed directly to the
wall using 68mm wall brackets and valley beams using 150
beam to wall brackets. This option will not require a rear
gable frame and back channel is fixed to the wall to
accommodate sheets running along the wall. The other
alternative requires valley beams be fixed to the wall and a
rear gable frame installed for fixing purlins. The rear gable
frame will need to be slightly offset from the wall to allow the
appropriate bracket fixing.
If fixing a Multispan Gable on its end with suspension
brackets to a fascia (Figure 10), typically a soaker flashing
is used. In this case the gable rafter at the rear of the unit
2.2 ATTACHING ON END TO HOUSE
450
600
1800
1900
300
400
Eaves
Overhang
(mm)
Channel Extension
Beyond Birds Mouth
(mm)
Web Overhang
(mm)
Recommended Channel Extension
CHANNEL
WASHER
9
COVER FLASHING
(OPTIONAL)
RIVET
RIVET
STRENGTHENING
BRACKET
FASCIA
150 ATTACHMENT
BEAM
HOUSE
GUTTER
