Rainline gutters are available in two shapes and five sizes.
Standard gutter downpipe size.
Work out the roof plan areas when working out gutter sizes clause e1 requires.
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Standard square downpipe size is 65mm.
75mm 87mm 100mm and 120mm.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Guttering is 112mm half round or 114mm square.
The sizes available in this style are 3 4 5 and 6.
Pvc rain gutter is more cost effective when compared to metal and is easier to install than metal.
Downpipe straps attach the downpipe to the wall downpipe shoes 135 and elbows 90 help water flow to a specific area.
Then use the information below to see what size gutter you need.
If a roof s various drainage areas call for different size gutters go for the biggest one k style.
Using new zealand building code clause e1 surface water to size gutters and downpipes new zealand building code clause e1 uses plan areas of the roof to find the appropriate down pipe and gutter sizes.
5 inch 5 520 square feet.
Half round gutters r size mm d mm d mm 100 107 17 125 3 7 150 155 17 190 192 22 size mm di mm 75 75 87 87 100 100 120 120 rectangular gutters.
The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
6 inch 7 960 square feet.
An architect may like the look of a particular gutter and specify that.
Secondly choose the profile you want as each will offer a slightly different aesthetic depending on the look you want and the style of the property.
And downpipe outlets channel water from the gutter to the downpipe.
Standard round downpipe size is 68mm.
It also comes in sizes 2 3 and.
Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.
Commercial gutters are made in standard sizes and shapes.
Offsets are available to fit either a 450mm or 600mm eaves overhang.
100mm 125mm 150mm 190mm and rectangular 136mm.
So the designer must then find the most economical number of and size of downpipe to fit the specified gutter.
This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system.
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.
Individual roof plan areas contribute to the total roof plan area.
5 inch 5 520 square feet.
Complete your spouting project with a range of downpipe accessories.
