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