As a box gutter is usually located above a room or space in a building there is an increased risk that rainwater overflow could cause damage to the building or cause loss of amenity to.
Box gutter regulations nsw.
High front guttering advisory committee report in 2010 the high front guttering advisory committee was established to investigate concerns that high front guttering products and installation techniques may be.
A box gutter may look like a box because of its boxy shape.
The picture above shows the layout of a typical box gutter on a metal roof.
The builder or guttering installer needs to make sure the gutter system is fully compliant with nsw laws and australian standards.
This has become a big issue in the past few months particularly in victoria and is going to be a new section in the upcoming.
Typically a box gutter is trapped between two roofs that feed rainwater into it.
Ncc volume two part 3 5 2 a box gutter is typically a gutter that is set into the slope of a roof.
The new regulations from the victorian building authority have changed the compliance requirements for guttering to ensure that eaves are not damaged by overflowing water during a major rainfall event.
In my last article i discussed the emergence of the issue of provision for overflow in external eaves gutters or more specifically the lack of provision for overflow.
But it can be used for elsewhere in the world if you know the design rainfall intensity requirements for your area.
But the main reason for its name is because it is boxed in on all sides.
Single component offering build speed and reduced time on site 4.
Customisable gutter widths giving you design flexibility 3.
The page 6 diagram figure 5 shows downpipes 1 3 both serving approximately 15 metres of guttering the gutter length between the high points and downpipes 3 4 are shown as approximately 16 metres apart.
What s in the new guttering legislation.
Depth of the box gutter consistent with saa hb39 installation code for metal roof and wall cladding section 5 clause 5 7 3 and figure 5 7 3 to prevent internal flooding or damage to the building or contents see figure 2.
Architects draftpersons builders and other practitioners responsible for designing a box gutter should work closely with the roof plumbers that will install the box gutter to ensure that the overall design and installation will be compliant with relevant regulations.
This free online box gutter calculator will calculate the size of box gutters and sumps with a side overflow in accordance with the australian plumbing code as nzs 3500 3 2003 part 3 storm water drainage.
Compatible roof panels gutter components to complete the system including internal and external corners stop ends t sections sumps overflows and weirs are available on order.
Peter coll provides a timely update regarding the provision for overflow and box gutter compliance.
The width of the rainhead is to be at least equal to the width of the box gutter and the box gutter needs to.
