Designing Gutter Downspout System

A little water will fall off these edges but not enough.

Designing gutter downspout system.

On the 80 foot long roof assume two down spouts on each side. You have three options. How to design a gutter downspout system step 1. Some soil absorbs and drains the water very well so a downspout that diverts water just a few inches away from your home.

Assume a level rectangular gutter with a depth to width ratio of 0 75. Use the factor of 1 05 from table 2 to adjust the roof plan area for the 4 12 roof pitch. An amateur may only consider the length of the roof s edge when planning a gutter installation. Design area for pitched roofs.

Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or. Cross off any edge that isn t at the bottom of a slope. A 4 x 5 downspout can also fit but again some trimming of the flange of the preformed downspout outlet may be required. 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.

The issue is soil. The map needs to be as close to scale as possible. They ll cost more and probably require a custom order through a professional installer. 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.

Remember a gutter downspout system is a containment sy. Design a gutter downspout system for a 40 by 80 foot free stall barn located near folsom la with a 4 12 gable roof. Some downspouts simply can t move the water far enough away from your house on their own. Increase the pitch of the gutter.

The area of roof contributing runoff to each gutter and downspout should be determined. Draw a map of your roof on a piece of paper. The above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing. You can use your.

A 6 inch top width k style gutter can receive a 3 x 4 downspout. That line eventually emptied into the low spot in the back yard. Increasing the pitch increases a gutter s. The maximum accumulation of rainfall occurs when it falls perpendicular to the roof plane.

Get 7 or 8 inch gutters. Featuring durable vinyl construction this extension can be buried bent or connected to additional sections. Once all the parts of the drainage system were installed we covered the tubes with several inches of rock. The above recommendations.

When installing a gutter downspout drainage system be sure to avoid some of the common mistakes made. The standard is about inch per 10 feet.