Non compliant poorly fitted or retrofitted box gutter rainheads often cause major flooding.
Box gutter regulations victoria.
Fact sheet from the vba.
In victoria the installation of box gutters is.
The width of the rainhead is to be at least equal to the width of the box gutter and the box gutter needs to.
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.
Too often in the roofing industry contractors are.
Peter coll provides a timely update regarding the provision for overflow and box gutter compliance.
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.
New regulations went into force on 1st january 2016 to correct this issue.
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.
Plumbers must install the box gutter system in accordance with as nzs 3500 3 as nzs 3500 5 hb 114 and hb 39.
What s in the new guttering legislation.
The scope of roofing stormwater work under the plumbing regulations 2008.
A box gutter may look like a box because of its boxy shape.
Overflow in eaves gutters.
Method for design of eaves gutter systems.
And project managers must ensure that the building is constructed in accordance with the approved design.
The picture above shows the layout of a typical box gutter on a metal roof.
Saa snz hb114 1998 ci 3 6.
Plumbing regulations 2008 part 2 r 14.
Fact sheet from the victorian building authority.
A group of plumbing industry experts were so tired of seeing box gutter rainheads that didn t comply with as nzs 3500 3 they decided to do something about it.
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.
In victoria the installation of box gutters is regulated plumbing work that must be carried out and certified by suitably registered licensed plumbers.
Therefore it is very.
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.
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.
Inappropriate box gutter size for the roof catchment area.
Overflow provisions for box gutters.
Plumbing regulations 2008 part 3 r 14.
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.
Building permit involving the box gutter system relevant building surveyor.
