Calculating Gutter Sizes Uk

Gutter ratio l1 l1 l2 where.

Calculating gutter sizes uk.

Change the style of gutters to one with a greater capacity. 5 inch 5 520 square feet. Calculate the square footage by getting up there with a tape measure. 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.

Increasing the capacity of your gutter system. Use the formula a l x w where a is area l is length and w is width. 6 inch 7 960 square feet. For a typical gutter run up to a maximum of 10m the ratio of gutter lengths is calculated from.

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. If you ve got a simple gable end roof then it s easy you only need to know two figures one for either slope. As a consequence sizing the gutter spout is key to properly sizing a gutter system. The most logical way to choose your gutter size would be according to the area of your roof.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Move the outlet downpipe from the end of the gutter to the middle. Determine the surface area of your roof. 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.

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