Calculate Gutter Size Uk

5 inch 2 500 square feet.

Calculate gutter size uk.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Calculate the area of a roof to work out how much guttering is required. Refer to bsen 12056 part 3.

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. 5 inch 5 520 square feet. 6 inch 7 960 square feet.

Now finally you can find the appropriate gutter size by looking at the following figures showing the relationship between different gutter systems and the roof area they ll be able to drain. 5 inch 5 520 square feet. 5 inch 5 520 square feet. These figures are based on a rainfall intensity of 75mm hr roof pitch not exceeding 50º gutters running full.

Picking your gutter size. The total rainfall and how rapidly it falls will affect the runoff from the roof. Depending on building type a safety factor should be allowed for the sizing of internal gutters. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

So for a roof that is 5 m long with a height of 4 m and the roof width is 8 m which makes the half roof width 4m we can calculate the effective roof area like this. Gutter ratio l1 l1 l2 where. Refer to the gutter packaging or specification for the recommended downspout size. Then use the information below to see what size gutter you need.

Match your downspouts to the gutter size you chose in step 7. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Gather some basic weather information to calculate the proper size for gutters and downspouts for a house. For example a 5 inch gutter system requires at least 2 x 3 downspouts and a 6 inch gutter system requires 3 x 4 downspouts.

That part of the gutter in which the angle obstructs the flow. Choose gutter outlets according to published flow rate capacities. For accurate project specific advice on rainwater flow calculations contact our friendly knowledgeable team on 0800 644 44 26. Calculate effective maximum roof area b c 2 x length of roof area in m installation.

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. 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. Then use the chart below to see what size gutter you need. Determine the size of your downspout.

For a typical gutter run up to a maximum of 10m the ratio of gutter lengths is calculated from.