Gutter Downspout Dimensions

How to figure the right downspout size.

Gutter downspout dimensions. It also comes in sizes 2 3 and 3 4. Most downspouts are rectangular but they can also be round or square. One downspout is typically enough for every 20 25 feet of guttering. Downspout sizing in sizing downspouts the following considerations apply.

Downspouts are commonly 2 x 3 inches and 3 x 4 inches in size or 3 or 4 inches in diameter. The sizes available in this style are 3 4 5 and 6. More product details close. Round downspouts come in various sizes and colors and mostly used with half round gutters.

Downspouts should be constructed with conductor. Use the downspout to redirect runoff and help prevent garden erosion and foundation damage. Rectangular downspouts move slightly less water at 600 square feet for 2 by 3 inch or 1 200 square feet for a 3 by 4 inch downspout. You should be able to.

The most common gutter sizes are 5 inches and 6 inches although 4 inches is available as well. The larger a gutter downspout the more water it can drain quickly. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. Gutter downspout sizes are 3 to 6 inches.

However too large a gutter downspout can look unattractive. Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run. But more could be. Multiply the number of downspouts by square footage of each.

The size of the downspout should be constant through out its length. The standard is about inch per 10 feet. Metal or vinyl downspouts this versatile downspout has a lifetime guarantee. Practically speaking though a common gutter size is usually selected and downspout spacing is equal for most buildings.

Size of the gutter drainage area. This durable downspout is maintenance free and has uv stabilizers to help prevent uv light degradation. This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system. Compatible with 2 in.

For design purposes and aesthetics let s assume you have selected an 8 gutter. Rainfall intensity is measured in inches per hour at a 5 minute interval.