Design of eaves gutters box gutters downpipes to the australian national plumbing code as nzs 3500 3.
Standard box gutter sizes australia.
The gutter collects the water and disposes of it through the drainpipe.
Box gutter systems are thoroughly treated in as nzs 3500 3 2003 and hb114 1998.
When being cut to size the maximum product length is 9 0m and the minimum length is 500mm.
Drainage systems for larger roofs use box gutters at the perimeter and internally.
Stratco gutters are strong yet lightweight making them easy to handle.
For commercial projects the minimum allowable width is 300mm.
Particular reference should be made to the correct sizing of gutter.
The minimum width allowed for domestic projects is 200mm.
Box gutters must be straight no bends.
Drainage system using the standard roll formed rainwater products gutters installed at the building eaves.
The minimum size of a sump is 400mm x 200mm minimum width of box gutter and 150mm deep.
Sumps are to be appropriately sized in accordance with as nzs 3500 3 with a minimum length of 400 mm and when fitted with a high capacity overflow device with a depth of not less than 150 mm when either one or two box gutters enter the sump.
Product kept in stock is available in 6m lengths.
How much fall should i have on a box gutter.
Box gutter gradients shall not be flatter than 1 200 for sole widths equal to or less than 600mm wide.
There is detailed government legislation regarding the design installation and maintenance of guttering.
Colorbond box gutter measures 150mm x 150mm x 150mm.
Calculators for designing eaves gutters box gutters downpipes pipes and open channels etc to australian standards.
Pre manufactured gutter mitres and gutter angles for many guttering profiles reduce the need for creating mitres on site therefore simplifying the installation.
Code box gutter requirements.
Roof drainage systems should be designed and detailed by a suitably qualified trade or professional in accordance with the bca and the australian standards.
If draining to a sump with a vertical overflow somewhere along the box gutter use this calculator.
And the provision of appropriate overflow devices.
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.
Sides must be vertical.
Quantity and placement of downpipes.
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.
