Calculating Gutter Sizes Uk

Then use the chart below to see what size gutter you need.

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. 6 inch 7 960 square feet. For example if your roof is 40 feet long and 20 feet wide you area will be 800 square feet. Determine the surface area of your roof.

If you ve got a simple gable end roof then it s easy you only need to know two figures one for either slope. Change the style of gutters to one with a greater capacity. 5 inch 5 520 square feet. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

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. 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. Increasing the capacity of your gutter system.

Move the outlet downpipe from the end of the gutter to the middle. The most logical way to choose your gutter size would be according to the area of your roof. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Gutter ratio l1 l1 l2 where.

Add a fall to the gutters which we recommend you do anyway.