Sizing Box Gutters

Adding additional downspouts will require less gutter and downspout volume resulting in smaller gutters downspouts.

Sizing box gutters.

The gutter and downspout size required is highly dependent on the amount of gutter and the spacing of the downspouts. Then use the information below to see what size gutter you need. 5 inch 5 520 square feet. Learn more how to storm water design for building sites.

Gutter sizing step 1 determine roof area to be drained. Then use the chart below to see what size gutter you need. If a roof s various drainage areas call for different size gutters go for the biggest one k style. 5 inch 5 520 square feet.

This free online box gutter calculator will calculate the size of box gutters and sumps with a side overflow in accordance with the australian plumbing code as nzs 3500 3 2003 part 3 storm water drainage. Please lower the maximum spacing between downspouts to see this effect. Calculate roof area to be drained by your gutter system and note. The total flow is used to size the sump and overflow.

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. The side with the maximum flow is used to size the box gutter. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.