Box Gutter Size Calculator Uk

Downpipe eaves gutter long straight eaves gutters box gutter to rain water head box gutter vertical faces box gutter side o flow box gutter vertical o flow storm water pipe size storm water network overland flow path spitter upstream end custom rain water head.

Box gutter size calculator uk.

For accurate project specific advice on rainwater flow calculations contact our friendly knowledgeable team on 0800 644 44 26. Depending on building type a safety factor should be allowed for the sizing of internal gutters. 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. Calculate the effective catchment area x to be drained from the following table.

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. Resources aluminum series acm series column covers fastener series zinc series testing data aama pdf astm pdf gutter sizing sheet metal gages order literature northclad gutter size requirement calculator this calculator uses current data to calculate the required size of gutter as well as number and size of downspouts based on your input. Table 1 calculation of area drained type of surface effective design area m 1 flat roof plan area of relevant portion 2 pitched roof 30 pitched roof 45 pitched roof 60 plan area of portion x. Our online tools have been designed with simplicity in mind removing the need for any prior specialist industry knowledge.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. The tools guide the user step by step allowing fast and simple roof drainage design whilst ensuring full compliance with bs en12056 3 rainwater drainage design standard. 15 m is a practical maximum gutter length to be served by a downspout. To limit the effects of thermal expansion in gutters 50 ft.

Then use the chart below to see what size gutter you need. To select the size of the classical rainwater system the following method should be used. For a typical gutter run up to a maximum of 10m the ratio of gutter lengths is calculated from. Upon completion a full set of rainwater drainage design calculations are provided confirming the.

Calculate the area of a roof to work out how much guttering is required. If a roof s various drainage areas call for different size gutters go for the biggest one k style. We recommend resource library read more. 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.

5 inch 5 520 square feet. Gutter ratio l1 l1 l2 where. 6 inch 7 960 square feet. Choose gutter outlets according to published flow rate capacities.