Gutter Downspout Dimensions

The larger a gutter downspout the more water it can drain quickly.

Gutter downspout dimensions.

How to figure the right downspout size. Continuing with our example in the last step we know our gutter downspout system may be subject to as much as 1 880 gallons per minute. Rainfall intensity is measured in inches per hour at a 5 minute interval. Multiply the number of downspouts by square footage of each.

Round 3 inches 706 square feet 4 inches 1 255 square feet. The standard is about inch per 10 feet. One downspout is typically enough for every 20 25 feet of guttering. The size of the downspout should be constant through out its length.

Round downspouts come in various sizes and colors and mostly used with half round gutters. Gutter downspout sizes are 3 to 6 inches. Metal or vinyl downspouts this versatile downspout has a lifetime guarantee. 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.

For design purposes and aesthetics let s assume you have selected an 8 gutter. Compatible with 2 in. Size of the gutter drainage area. Increasing the pitch increases a gutter s handling capacity but the gutter may look askew over a long run.

The sizes available in this style are 3 4 5 and 6. Use the downspout to redirect runoff and help prevent garden erosion and foundation damage. You should be able to. Most downspouts are rectangular but they can also be round or square.

Downspout sizing in sizing downspouts the following considerations apply. You should have enough gutter downspouts to effectively handle the size of your entire gutter system. But more could be. This durable downspout is maintenance free and has uv stabilizers to help prevent uv light degradation.

Downspouts should be constructed with conductor. Downspouts of less than 7 00 sq in 4515 sq mm cross section should not be used except for small areas such as porches and canopies. This type of down spout is considered the standard downspout style in households and is used with a 5 k style guttering system. More product details close.

Downspouts are commonly 2 x 3 inches and 3 x 4 inches in size or 3 or 4 inches in diameter. It also comes in sizes 2 3 and 3 4.