Designing Gutter Downspout System

The above recommendations.

Designing gutter downspout system.

Some downspouts simply can t move the water far enough away from your house on their own. You have three options. Gutters and downspouts do a great job of handling water run off from the roof but you also need to think about how your downspout drainage system is performing. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or.

A 4 x 5 downspout can also fit but again some trimming of the flange of the preformed downspout outlet may be required. The area of roof contributing runoff to each gutter and downspout should be determined. On the 80 foot long roof assume two down spouts on each side. A 6 inch top width k style gutter can receive a 3 x 4 downspout.

The map needs to be as close to scale as possible. The issue is soil. Assume a level rectangular gutter with a depth to width ratio of 0 75. The maximum accumulation of rainfall occurs when it falls perpendicular to the roof plane.

The standard is about inch per 10 feet. Where the tube passes by the downspout from the gutter we installed a y fitting and drained the roof water from the gutter system directly into the main drainage line. Increase the pitch of the gutter. Get 7 or 8 inch gutters.

Once all the parts of the drainage system were installed we covered the tubes with several inches of rock. The amerimax home products flex a spout downspout extension has the amerimax home products flex a spout downspout extension has a rigid corrugated design for versatility. An amateur may only consider the length of the roof s edge when planning a gutter installation. When installing a gutter downspout drainage system be sure to avoid some of the common mistakes made.

Some soil absorbs and drains the water very well so a downspout that diverts water just a few inches away from your home. The above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing. They ll cost more and probably require a custom order through a professional installer. Increasing the pitch increases a gutter s.

A little water will fall off these edges but not enough. Draw a map of your roof on a piece of paper. Design a gutter downspout system for a 40 by 80 foot free stall barn located near folsom la with a 4 12 gable roof. Featuring durable vinyl construction this extension can be buried bent or connected to additional sections.

That line eventually emptied into the low spot in the back yard. Use the factor of 1 05 from table 2 to adjust the roof plan area for the 4 12 roof pitch. Remember a gutter downspout system is a containment sy. How to design an effective gutter system 3 factors to consider.

Cross off any edge that isn t at the bottom of a slope. You can use your.