Calculate Box Gutter Size

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.

Calculate box gutter size.

Then use the chart below to see what size gutter you need. Box gutters must be straight no bends. Measure your gutter across the top from the back where the gutter meets the home to the outer edge. Roof area the locale s rainfall intensity and gutter capacity determine how many square inches of downspout are needed.

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. Sizes the depth shown of the box gutter is the depth at the upstream end. Size downspouts to fit the gutter. 5 inch 5 520 square feet.

Sides must be vertical. Learn more how to storm water design for building sites. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. 6 inch 7 960 square feet.

5 inch standard k style gutter shop 5 gutterbrush. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Down pipe must be vertical from sump not to the side minimum sump length is 400mm. Doubling the number of downspouts halves the required capacity for each.

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.