Gutter Drainpipe Dimensions

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.

Gutter drainpipe dimensions.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Gutter downspout sizes are 3 to 6 inches. The sizes available in this style are 3 4 5 and 6. This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system.

On chart 1 1 find the vertical line representing l 40 12 2 m. 5 inch 5 520 square feet. 6 inch 7 960 square feet. Then use the information below to see what size gutter you need.

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. 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. However too large a gutter downspout can look unattractive. Most downspouts are rectangular but they can also be round or square.

Round downspouts come in various sizes and colors and mostly used with half round gutters. Sdr indicates the pipe is made to the size dimension ratio standard. It also comes in sizes 2 3 and 3 4.