Calculating Gutter Sizes Uk

6 inch 7 960 square feet.

Calculating gutter sizes uk.

Calculate the square footage by getting up there with a tape measure. If a roof s various drainage areas call for different size gutters go for the biggest one k style. For a typical gutter run up to a maximum of 10m the ratio of gutter lengths is calculated from. If you ve got a simple gable end roof then it s easy you only need to know two figures one for either slope.

Move the outlet downpipe from the end of the gutter to the middle. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Then use the chart below to see what size gutter you need. As a consequence sizing the gutter spout is key to properly sizing a gutter system.

Gutter ratio l1 l1 l2 where. Use the formula a l x w where a is area l is length and w is width. Design area effective area 5 x 10 x 1 29 64 5m run off 64 5m x 0 022 l s per m 1 42 l s from chart 125 x 100 gutter with 76 ø downpipe appears suitable but check. Lg 10 133 therefore reduction factor 0 86 d 0 1 gutter capacity x reduction factor 2 84 x 0 86 2 44 l s therefore the proposed system is suitable.

Change the style of gutters to one with a greater capacity. Add a fall to the gutters which we recommend you do anyway. Determine the surface area of your roof. 5 inch 5 520 square feet.

The most logical way to choose your gutter size would be according to the area of your roof.