Designing Gutter Downspout System

A 6 inch top width k style gutter can receive a 3 x 4 downspout.

Designing gutter downspout system.

The issue is soil. Draw a map of your roof on a piece of paper. Some downspouts simply can t move the water far enough away from your house on their own. The standard is about inch per 10 feet.

Get 7 or 8 inch gutters. You have three options. How to design a gutter downspout system step 1. You can use your.

The above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing. How to design an effective gutter system 3 factors to consider. A 4 x 5 downspout can also fit but again some trimming of the flange of the preformed downspout outlet may be required. The roof area to be drained is a key factor in designing gutters and downspouts.

Assume a level rectangular gutter with a depth to width ratio of 0 75. Design area for pitched roofs. The map needs to be as close to scale as possible. The above recommendations.

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. Featuring durable vinyl construction this extension can be buried bent or connected to additional sections. Increase the pitch of the gutter. 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 maximum accumulation of rainfall occurs when it falls perpendicular to the roof plane. Increasing the pitch increases a gutter s. That line eventually emptied into the low spot in the back yard. Cross off any edge that isn t at the bottom of a slope.

Design a gutter downspout system for a 40 by 80 foot free stall barn located near folsom la with a 4 12 gable roof. 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. On the 80 foot long roof assume two down spouts on each side. Remember a gutter downspout system is a containment sy.

An amateur may only consider the length of the roof s edge when planning a gutter installation. Once all the parts of the drainage system were installed we covered the tubes with several inches of rock. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or. A little water will fall off these edges but not enough.

Use the factor of 1 05 from table 2 to adjust the roof plan area for the 4 12 roof pitch. Some soil absorbs and drains the water very well so a downspout that diverts water just a few inches away from your home.