ADDITIONAL MATERIALS
These materials are needed to complete the job, but are not
included in the basic kit price (they must be purchased as
extra items, and their quantities specified):
Rafter strengthening brackets and channels to suit 150
attachment beam for attaching gable to house.
M12 bolts and nuts for fixing strengthening brackets to the
rafter.
M12 bolts and nuts for fixing 150 attachment beam to
strengthening brackets.
Fascia Brackets for attaching gable on end to house.
M10 coach bolts and nuts for fixing fascia brackets to the
house rafter.
M8 masonary anchors for fixing Wall Brackets to masonary.
12x25 type 17 hex head screws for fixing Suspension
Brackets to timber.
10x16 hex head screws for fixing Suspension Brackets to
steel fascia.
Cover flashings (measurements required).
Box gutter (measurements required).
These items are available at request:
Infill Panels
Panel Strips
Finial
Soaker Flashing in lieu of Header Flashing
Purlin Intersection Cap
OPTIONAL EXTRAS
1.0 INTRODUCTION
2.0 ATTACHING TO AN EXISTING
STRUCTURE
2.1 ATTACHING ON SIDE TO HOUSE
Please read these assembly instructions thoroughly before
commencing the construction. Double check all
dimensions, levels and bolting locations before cutting,
screwing or bolting structural members. It is recommended
that the persons erecting the structure have had some
previous building experience because some modifications
to the existing house structure are required.
The builder or council is to ensure the existing
house/structure is of a suitable structural integrity and
complies with all the relevant Australian Building codes and
standards. For more information regarding the suitability of
the house structure to accommodate the Stratco Attached
Multispan Gable, consult a structural engineer or a building
authority. It is the builders responsibility to ensure that the
existing house roof structure is strengthened correctly.
Refer to section 2.1 if attaching Multispan Gable on it’s side
to a house, section 2.2 if attaching on it’s end to a house or
refer to both sections if attaching the gable on it’s side and
end.
A Stratco Multispan attached on it’s side to a house is
attached to the existing eaves overhang at the fascia.
The first objective in the construction is to fix a structural
side beam along the fascia or wall, to which the Gable Unit
is attached.
Most existing houses have not been designed for the
attachment of portal framed gables to their side, therefore
additional strengthening of the house rafters must be
performed.
In order to strengthen the existing house rafters, the roof
tiles or roof sheets need to be lifted to expose the roof
frame. Steel rafter brackets and channels are then bolted
along the house rafters. Refer to section 2.1.1.
A 150 mm Outba
beam is bolted to the strengthening
brackets at the fascia. Once the 150 attachment beam is
secured to the house, the Gable Unit can be erected and
fastened to the beam.
The first step is to determine the number of rafters which
need to be strengthened and their location relative to the
unit. You will have to lift some roof tiles or roof sheets to
discover the rafter positions and spacings. The number of
rafters which need to be strengthened is determined by the
builder.
: 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.
Use an adjustable rafter strengthening bracket and one
channel for eaves overhangs up to 450 mm. Use an
adjustable rafter strengthening bracket and two channels
for eaves overhangs over 450 mm and up to and including
600 mm, as shown in figure 4.
The adjustable rafter strengthening bracket is shown in
figure 3. Please note that this bracket may not be suitable
for applications where the front face of the house gutter is
higher than 120 mm. In these cases please contact Stratco
for alternative solutions.
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®
Note
2.1.1 RAFTER STRENGTHENING
4
ADJUSTABLE RAFTER STRENGTHENING
BRACKET
3
