Box Gutter Measurements

The total flow is used to size the sump and overflow.

Box gutter measurements.

The side with the maximum flow is used to size the box gutter. Find the width of the gutters. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. 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.

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

Gutters typically come in 5 or 6 in 13 or 15 cm sizes and can be k style or half round place a sturdy 20 ft 6 1 m ladder on 1 side of your house so that you can reach the gutters. By reducing the downspout spacing to perhaps 35lf you could use a 6 gutter with 9 4 x6 downspouts in lieu of an 8 system. It is easy to see that you can vary gutter size downspout size and downspout spacing to properly size a gutter downspout system. When trying to decide on what commercial gutters you need it is important to realize that the size of the gutters can affect how well they work for you.