Designing Gutter Downspout System

The above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing.

Designing gutter downspout system.

When installing a gutter downspout drainage system be sure to avoid some of the common mistakes made. Design a gutter downspout system for a 40 by 80 foot free stall barn located near folsom la with a 4 12 gable roof. Draw a map of your roof on a piece of paper. Some soil absorbs and drains the water very well so a downspout that diverts water just a few inches away from your home.

A 6 inch top width k style gutter can receive a 3 x 4 downspout. 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. Featuring durable vinyl construction this extension can be buried bent or connected to additional sections.

Assume a level rectangular gutter with a depth to width ratio of 0 75. The roof area to be drained is a key factor in designing gutters and downspouts. Once all the parts of the drainage system were installed we covered the tubes with several inches of rock. Some downspouts simply can t move the water far enough away from your house on their own.

You can use your. Increasing the pitch increases a gutter s. Get 7 or 8 inch gutters. They ll cost more and probably require a custom order through a professional installer.

The maximum accumulation of rainfall occurs when it falls perpendicular to the roof plane. The issue is soil. The standard is about inch per 10 feet. Use the factor of 1 05 from table 2 to adjust the roof plan area for the 4 12 roof pitch.

You have three options. Increase the pitch of the gutter. On the 80 foot long roof assume two down spouts on each side. 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.

The above recommendations. Design area for pitched roofs. An amateur may only consider the length of the roof s edge when planning a gutter installation. Remember a gutter downspout system is a containment sy.

Cross off any edge that isn t at the bottom of a slope. The map needs to be as close to scale as possible. That line eventually emptied into the low spot in the back yard. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or.

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. How to design an effective gutter system 3 factors to consider.