Projects 2 m or less from the building it does not need to have roof bracing.
Roof plane bracing nz.
The bracing described in this brochure covers both framed roofs and fully trussed roofs.
Bracing roof framing typically consisted of 4 x 2 100 x 50 mm rafters spaced at 18 450 mm centres.
Bracing demand must be calculated and sufficient bracing incorporated into a building so that the structure can withstand these forces.
Each ridge line shall have a minimum of two roof braces.
Dormers porches do not require bracing.
Summarised from branz guideline newsletter october 2014.
There are several options of roof plane braces see figure 2.
Roof planes less than 6m2 e g.
Roof bracing is unlikely to have any effect if veranda roofs up to 2 m wide are securely fixed to or restrained by the structure of the building.
Roof bracing requirements roof type one roof brace per 50m2 of roof area see rule 8 for minimum requirements one roof brace per 25m2 of roof area see rule 8 for minimum requirements 1.
Additional valleys or hips that also run from top plate to ridge are counted as one additional brace.
Bracing demand must be calculated and sufficient bracing incorporated into a building so that the structure can withstand these forces.
This bulletin describes the bracing for subfloors and roofs of buildings within the scope of nzs 3604 2011 timber framed buildings.
There must be at least one roof plane brace in each roof plane.
A pair of crossed lumberlok strip brace preferred for ease of installation can be classed as one roof plane brace and shall be installed as detailed in this brochure.
The trusses will require lateral support at right angles to the length of the trusses at the high end and the roof will also require roof plane bracing and or roof space braces.
For use as bracing or in short lengths as a jointing material.
There are several options of roof plane braces see figure 2.
In a mono pitch roof they span between the front wall parapet framing and the rear wall framing.
There must be a minimum of two there is an error in nzs 3604 2011 which requires three that run from top plate to ridge.
Wind and earthquakes can generate significant forces on a building.
Branz structural engineers suggest a rule of thumb that where a lightweight veranda roof.
There must be a minimum of two there is an error in nzs 3604 2011 which requires three that run from top plate to ridge.
In a butterfly roof with a central gutter they span between the parapet wall framing and the central gutter in a butterfly roof.
The highest end shall be considered to be a ridge line for bracing purposes.
I roof plane brace or ii roof space brace or combination of the two.
Strip brace provides an ideal bracing system for walls or roof plane.
Additional valleys or hips that also run from top plate to ridge are counted as one additional brace.
