Roof Gutter Dimensions

At 1 880 gpm s we will need 8 downspouts to handle the rainfall 1 880 260 8 downspouts rounded up.

Roof gutter dimensions.

There are two most common type of residential gutters that we will talk about in this post for reliable roof gutter sizing. 5 inch standard k style gutter shop 5 gutterbrush. W is the width in in. 5 inch 5 520 square feet.

This building has a parapet wall on three sides and a gutter to be located on an 80 ft 24 4 m side. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. The larger a gutter downspout the more water it can drain quickly. 6 inch 7 960 square feet.

As a general rule egutter recommends for roof areas that exceed 2800 square feet a 6 k style size with a 3 x 4 downspout size would be appropriate. See photos below most residential gutters will measure approximately 5 inches across the top with the actual opening being approximately 4 5 inches. Gutter downspout sizes are 3 to 6 inches. 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. However too large a gutter downspout can look unattractive. I denotes rainfall intensity the roof area in square feet sq m. Five inch k style gutters six inch half round.

Half round gutter sizing is based on w 0 0182 la 2 5. From the table we find that a 5 x5 downspout will discharge 260 gallons per minute. Metal corrosion issues all gutter and components must be the same to prevent electrolysis or electrical corrosion. Multiply the drainage area by the roof pitch factor and rainfall intensity to find out the adjusted square footage.

Half round 5 inch 2 500 square feet 6 inch 3 840 square feet. 5 inch 2 500 square feet. Half round adjusted square footage of roof. 6 inch 3 840 square feet.

Also assume our guttered eave is 335 linear feet. The required width of gutter is therefore 6 in 152 mm and its depth need be only 4 5 in 114 mm in. When you are considering what kind of gutters to get keep in mind that different gutter shapes have a significant impact on the capacity of the gutter. For design purposes and aesthetics let s assume you have selected an 8 gutter.

See galvonic corrosion for more detail.