Method for design of eaves gutter systems.
Box gutter regulations nsw.
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.
Typically a box gutter is trapped between two roofs that feed rainwater into it.
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.
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.
Box gutters plumbers must install a box gutter system in accordance with as nzs 3500 3 as nzs 3500 5 hb 114 and hb 39.
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.
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.
The picture above shows the layout of a typical box gutter on a metal roof.
What s in the new guttering legislation.
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.
Installing box gutters to achieve compliance with relevant regulations.
A box gutter may look like a box because of its boxy shape.
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.
Ncc volume two part 3 5 2 a box gutter is typically a gutter that is set into the slope of a roof.
In victoria the installation of box gutters is regulated plumbing work that must be carried out and certified by suitably registered licensed plumbers.
The width of the rainhead is to be at least equal to the width of the box gutter and the box gutter needs to.
This document is also adopted by nsw fair trading.
Peter coll provides a timely update regarding the provision for overflow and box gutter compliance.
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.
