How To Size Box Gutters

Then use the chart below to see what size gutter you need.

How to size box gutters. 6 inch 7 960 square feet. For square footage up to 3 840 feet 1 170 m use 6 in 15 cm half round gutters. 5 inch 5 520 square feet. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Sizes the depth shown of the box gutter is the depth at the upstream end. Choose the size that corresponds with the adjusted square footage. Box gutters must be straight no bends. If a roof s various drainage areas call for different size gutters go for the biggest one k style.

Calculate the necessary scaling factors to scale these dimensions to the flow we want. Must have a constant slope between 1 40 and 1 200. Then use the information below to see what size gutter you need. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

6 inch 7 960 square feet. Sides must be vertical. 5 inch 5 520 square feet. Pick any size box gutter that fits on the relevant graph and determine the depth and the rain water head sizes.

If a roof s various drainage areas call for different size gutters go for the biggest one k style. Gutters come in k style and half round style. For example by going up to a 6 inch from a 5 you are increasing the amount of water the gutters can hold by 40.