Design of eaves gutters box gutters downpipes to the australian national plumbing code as nzs 3500 3.
Standard box gutter sizes australia.
Box gutter systems are thoroughly treated in as nzs 3500 3 2003 and hb114 1998.
How much fall should i have on a box gutter.
Stratco gutters are strong yet lightweight making them easy to handle.
Quantity and placement of downpipes.
Particular reference should be made to the correct sizing of gutter.
When being cut to size the maximum product length is 9 0m and the minimum length is 500mm.
If draining to a sump with a vertical overflow somewhere along the box gutter use this calculator.
There is detailed government legislation regarding the design installation and maintenance of guttering.
It is assumed that the eaves and gutters will have a gradient.
The minimum width allowed for domestic projects is 200mm.
Drainage system using the standard roll formed rainwater products gutters installed at the building eaves.
Code box gutter requirements.
This is best done by your architect engineer or building designer and should conform to the requirements of as nzs 3500 3 2003 plumbing and drainage.
Deviations from the gradient must be smooth and prevent towards the outlet without a proportional permanent ponding.
For commercial projects the minimum allowable width is 300mm.
A box gutter is given its name as it is usually boxed into the middle or edge of the roof.
Colorbond box gutter measures 150mm x 150mm x 150mm.
Box gutters must be straight no bends.
Act nsw nt qld sa tas vic wa includes stramit m pattern s pattern triline stiffened back and stramit triline hook back gutter products.
Roof drainage systems should be designed and detailed by a suitably qualified trade or professional in accordance with the bca and the australian standards.
Calculators for designing eaves gutters box gutters downpipes pipes and open channels etc to australian standards.
And the provision of appropriate overflow devices.
The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep.
Pre manufactured gutter mitres and gutter angles for many guttering profiles reduce the need for creating mitres on site therefore simplifying the installation.
Box gutter gradients shall not be flatter than 1 200 for sole widths equal to or less than 600mm wide.
Drainage systems for larger roofs use box gutters at the perimeter and internally.
Product kept in stock is available in 6m lengths.
When determining the size of your rainhead you will need to consider such things as rainfall intensity occurrence use of the building and the size of the box gutter.