Designing Gutter Downspout System

The roof area to be drained is a key factor in designing gutters and downspouts.

Designing gutter downspout system.

The above sizing is reflected in the development of figure 4 downspout outlet sizing leader pipe sizing. 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. Increase the pitch of the gutter. Some soil absorbs and drains the water very well so a downspout that diverts water just a few inches away from your home.

That line eventually emptied into the low spot in the back yard. Increasing the pitch increases a gutter s. How to design a gutter downspout system step 1. 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. Assume a level rectangular gutter with a depth to width ratio of 0 75. The area of roof contributing runoff to each gutter and downspout should be determined. Get 7 or 8 inch gutters.

Use the factor of 1 05 from table 2 to adjust the roof plan area for the 4 12 roof pitch. The map needs to be as close to scale as possible. The maximum accumulation of rainfall occurs when it falls perpendicular to the roof plane. You can use your.

Featuring durable vinyl construction this extension can be buried bent or connected to additional sections. Design a gutter downspout system for a 40 by 80 foot free stall barn located near folsom la with a 4 12 gable roof. A little water will fall off these edges but not enough. The standard is about inch per 10 feet.

When installing a gutter downspout drainage system be sure to avoid some of the common mistakes made. They ll cost more and probably require a custom order through a professional installer. On the 80 foot long roof assume two down spouts on each side. A 4 x 5 downspout can also fit but again some trimming of the flange of the preformed downspout outlet may be required.

Design area for pitched roofs. An amateur may only consider the length of the roof s edge when planning a gutter installation. Usually your gutter contractor will decide between 5 inch gutters with 2 by 3 inch downspouts or. Remember a gutter downspout system is a containment sy.

A 6 inch top width k style gutter can receive a 3 x 4 downspout. 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. Draw a map of your roof on a piece of paper. Cross off any edge that isn t at the bottom of a slope.

The above recommendations. The issue is soil.