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Atlanta Roofing: Article About Subsurface Drains For Gutter Runoff

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Getting water off of the roof of a house is only the first step to draining water runoff after precipitation occurs. Next, it has to be carried away from the edge of the structure, or it will leak into the foundation. A rule of thumb that is often enforced by local codes is that gutter runoff from the roof must be carried at least 5 feet away from the structure.

One way Atlanta roofing companies accomplish this is with drains that go beneath the surface and then drain out onto the ground farther away from the structure. The gutters that direct water from the roof lead underground, where they are connected to foundation drains. Then, the connected gutter and foundation drains take the water in shared pipes to where it is dumped out on the ground farther out from the structure itself.

The first step in installing subsurface drains is knowing where all of the gutter downspouts are. Then, a sketch should be drawn that shows where all the underground pipes will go. A list of materials to be used should be made at this time as well.

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Everything should be planned out in advance, and utilities companies should be contacted to determine where all subsurface pipes are located before doing any digging. If this method of joining pipes is being used on a new house, it is important to coordinate with the gutter installer.

Trenches must be dug for the gutter and the foundation pipes. The gutter and foundation pipes are merged into joint pipes at least 4 inches wide. These pipes lead to the outfall for the runoff. They should have a slope of at least a quarter inch per foot because the pipes must continue to run downwards until they surface.

Transition fittings are used to connect the gutter downspouts to sections of unslotted pipe, which will then carry the runoff underground. Transition fittings are not entirely necessary, but they help provide an unbroken appearance and also keep debris from entering the underground pipes. Also, the transitions and downspouts can be detached to clean out clogged pipes.

Wye fittings join gutter pipes to gutter pipes and foundation pipes to foundation pipes underground. Wherever these pipes dump out, it is good to have slotted caps on them to keep out animals and debris. Also, it is always a good idea to make a careful diagram of all pipes that have been installed underground for future reference.

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