How To Size Box Gutters

Calculate the necessary scaling factors to scale these dimensions to the flow we want.

How to size box gutters.

5 inch 5 520 square feet. Down pipe must be vertical from sump not to the side minimum sump length is 400mm. Box gutters must be straight no bends. Sides must be vertical.

If the adjusted square footage is equal to or less than 2 500 feet 760 m choose 5 in 13 cm half round gutters. Choose the size that corresponds with the adjusted square footage. For square footage up to 3 840 feet 1 170 m use 6 in 15 cm half round gutters. Must have a constant slope between 1 40 and 1 200.

Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage. Then use the information below to see what size gutter you need. 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.

Gutters come in k style and half round style. While a smaller commercial building might be able to get away with 5 inch box gutters we generally recommend that you start by looking at the 6 inch sizes. 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. 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. If a roof s various drainage areas call for different size gutters go for the biggest one k style. Then use the chart below to see what size gutter you need.