Designing Gutter Downspout System

Some downspouts simply can t move the water far enough away from your house on their own.

Designing gutter downspout system. How to design an effective gutter system 3 factors to consider. When installing a gutter downspout drainage system be sure to avoid some of the common mistakes made. 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. Remember a gutter downspout system is a containment sy. 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 above recommendations. On the 80 foot long roof assume two down spouts on each side. You have three options. That line eventually emptied into the low spot in the back yard.

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

They ll cost more and probably require a custom order through a professional installer. Cross off any edge that isn t at the bottom of a slope. A little water will fall off these edges but not enough. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or.

Featuring durable vinyl construction this extension can be buried bent or connected to additional sections. The standard is about inch per 10 feet. Increase the pitch of the gutter. 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 above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing. The issue is soil. 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. The roof area to be drained is a key factor in designing gutters and downspouts.

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. How to design a gutter downspout system step 1. 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. 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.