Standard Gutter Size Nz

Gutter sizing step 1 determine roof area to be drained.

Standard gutter size nz.

New zealand building code clause e1 table 5. The largest plan area is area a at 38 m. The type of gutters you buy and the size of the gutter pieces you buy should be able to handle all the rain your home gets in a year. According to this old house while 5 inch k style gutters and 6 inch half rounds are usually suitable for homes houses with big steep roofs or those located.

Gutters will be the same size for all the roof so use the largest plan area to work out the appropriate size gutter. You can also add additional or oversized downspouts to improve drainage if necessary. Nz s leading provider of steel roofing guttering products for residential commercial customers. Then use the chart below to see what size gutter you need.

It s important to note that your calculations should always be based on the size of the largest section of roof. This is an external gutter so using clause e1 figure 15 plot 38 40 m plan area on the. Gutters come in different sizes. Downspouts also come in different sizes such as 2 3 inches and 3 4 inches in size.

6 inch 7 960 square feet. Gutter sizing guide gutter downspout sizing methodology. The downspout and gutter sizing calculator is located on the tools cad and apps page of the smacna website. For saf perimeter systems commercial gutter designers contractors and building owners this gutter sizing section provides 4 steps to properly size a commercial gutter downspout configuration.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Gutters come in different sizes. If a roof s various drainage areas call for different size gutters go for the biggest one k style. This ensures the gutter will have sufficient capacity for all other smaller roof sections on the building.

They can be 4 5 or 6 inches. A standard 5 inch k style gutter can handle annual rainfall for a majority of houses in most of the u s. 5 inch 5 520 square feet. New zealand building code clause e1 figure 15.