Calculate Box Gutter Size

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.

Calculate box gutter size.

Sides must be vertical. Doubling the number of downspouts halves the required capacity for each. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. 5 inch standard k style gutter shop 5 gutterbrush.

Measure your gutter across the top from the back where the gutter meets the home to the outer edge. Sizes the depth shown of the box gutter is the depth at the upstream end. 5 inch 5 520 square feet. A square inch of downspout can drain 1 200 square feet of roof during a rain with an intensity of one inch per hour.

Roof area the locale s rainfall intensity and gutter capacity determine how many square inches of downspout are needed. Learn more how to storm water design for building sites. 6 inch 7 960 square feet. Box gutters must be straight no bends.

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. Size downspouts to fit the gutter. We recommend using this calculator as a basic tool to begin determining the requirements for your drainage system however all information should be verified by. Must have a constant slope between 1 40 and 1 200.

If a roof s various drainage areas call for different size gutters go for the biggest one k style.