New zealand building code clause e1 table 5.
Gutter sizing nz.
Gutters will be the same size for all the roof so use the largest plan area to work out the appropriate size gutter.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
For extreme conditions where a bold look is desired.
Then use the chart below to see what size gutter you need.
Product description gutters and downpipes are the most common method of disposing of surface water from buildings.
From 13 50 add to cart.
Dimond box 175 gutter allows rainwater or snow to be drained quickly and because of its large size it is also easy to clean out.
This is an external gutter so using clause e1 figure 15 plot 38 40 m plan area on the.
6 inch 7 960 square feet.
Now architects engineers designers and contractors can easily and accurately size downspouts and gutters according to the specifications in smacna s architectural sheet metal manual 7th edition 2012.
The gutter and downspout size required is highly dependent on the amount of gutter and the spacing of the downspouts.
To ensure that water is safely disposed of gutters and downpipes should be sized and installed so that the expected amount of water can be controlled with minimal chance.
This ensures the gutter will have sufficient capacity for all other smaller roof sections on the building.
Please lower the maximum spacing between downspouts to see this effect.
The largest plan area is area a at 38 m.
It s important to note that your calculations should always be based on the size of the largest section of roof.
Adding additional downspouts will require less gutter and downspout volume resulting in smaller gutters downspouts.
Figure 3 new zealand building code clause e1 figure 15.
Covid19 update dimond auckland will be operating from monday 30th august under the safety guidelines for businesses during level 2.
5 inch 5 520 square feet.
Bu509 sizing gutters and downpipes.
They don t corrode or rust and are ideal for coastal areas with salt laden air.
Made form galvsteel zincalume colorsteel.
Nz s leading provider of steel roofing guttering products for residential commercial customers.
The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.
Gutters will be the same size for all the roof so use the largest plan area to work out the appropriate size gutter.
Marley spouting is nz designed and manufactured for nz conditions.
The largest plan area is area a at 38 m 2.
New zealand building code clause e1 figure 15.
Then read off the.
