Gutter Drainpipe Dimensions

Most downspouts are rectangular but they can also be round or square.

Gutter drainpipe dimensions.

On chart 1 1 find the vertical line representing l 40 12 2 m. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Under the sdr standard the actual thickness of the pipe wall is determined by dividing the pipe diameter by the index number thus a 4 sdr 20 pipe would have a wall thickness of 4 20 0 2. Gutter downspout sizes are 3 to 6 inches.

But houses with big steep roofs or those located in climates prone to heavy downpours may need wider gutters and extra downspouts to keep rainwater from overflowing. This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system. It also comes in sizes 2 3 and 3 4. The larger a gutter downspout the more water it can drain quickly.

5 inch 5 520 square feet. The area to be drained by each section of gutter will be 1200 sq ft 111 5 sq m the rainfall intensity from table 1 2 col a is 6 in hr 152 mm hr the length of each gutter section is 40 ft 12 2 m and the ratio of gutter depth to width is 0 75. 6 inch 7 960 square feet. Round downspouts come in various sizes and colors and mostly used with half round gutters.

The sizes available in this style are 3 4 5 and 6. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Five inch k style gutters or 6 inch half rounds the most common residential sizes are able to handle the rainfall on most houses in most parts of the country.