Calculating Gutter Sizes Uk

As a consequence sizing the gutter spout is key to properly sizing a gutter system.

Calculating gutter sizes uk.

Then use the chart below to see what size gutter you need. For example if your roof is 40 feet long and 20 feet wide you area will be 800 square feet. Calculate the square footage by getting up there with a tape measure. 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. If a roof s various drainage areas call for different size gutters go for the biggest one k style. The most logical way to choose your gutter size would be according to the area of your roof. 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. Change the style of gutters to one with a greater capacity. 6 inch 7 960 square feet. 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.

5 inch 5 520 square feet. 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. Move the outlet downpipe from the end of the gutter to the middle. 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.

Gutter ratio l1 l1 l2 where.