Calculating Gutter Sizes Uk

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.

Calculating gutter sizes uk.

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. 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. For example if your roof is 40 feet long and 20 feet wide you area will be 800 square feet.

If you ve got a simple gable end roof then it s easy you only need to know two figures one for either slope. Increasing the capacity of your gutter system. Change the style of gutters to one with a greater capacity. Add a fall to the gutters which we recommend you do anyway.

For a typical gutter run up to a maximum of 10m the ratio of gutter lengths is calculated from. 5 inch 5 520 square feet. Gutter ratio l1 l1 l2 where. Determine the surface area of your roof.

6 inch 7 960 square feet. Calculate the square footage by getting up there with a tape measure. Move the outlet downpipe from the end of the gutter to the middle. If a roof s various drainage areas call for different size gutters go for the biggest one k style.

L1 l2 selecting gutter size there is no standard rate of rainfall in the uk so for accurate calculations refer to an approved weather authority to get a site specific rainfall level.