Figure out the slope.
Gutter drain pipe slope.
Continue until you have completed the trench.
A slope of less than 1 4 inch per foot will cause constant drain clogs and a slope of more than three inches will allow the water to drain without the solids.
Now that the trench is dug you can assemble the catch basin.
Featuring durable vinyl construction this extension can be buried bent or connected to additional sections.
Note that i said the drain pipe must be sloped rather than the french drain.
According to plumbing code drain pipe has to be sloped a minimum of 1 4 inch per foot and a maximum of three inches per foot or vertical.
Assemble and place the catch basin.
This means the downspout end of the gutter should be set 3 4 of an inch lower than the other end.
Usually 1 8 per foot is plenty for drainage this is the same as the commonly recommended 1 slope.
Dig trenches for drainage pipe.
The trench should be at least 6 inches wide and slope down slightly 1 to 2 inches per length of pipe so water drains away from the downspouts.
Calculating the slope of your drain pipe is easy.
Measure and plan 1.
All of your drain pipe with one exception must slope slightly downhill.
Measure the drain line distance.
This means that your gutter should be a half inch lower in height at every 10 foot mark until you reach the downspout.
Underground gutter drainage step 1.
For spans longer than 40 feet it s wise to have a downspout on each end and start the high spot of the gutter in the center.
The easiest way to dig the.
This practice will soak the foundation see figure 4.
Use this downspout extension to divert water away from the foundation or connect to drainage pipe and catch basin to control drainage.
Measure and plan the first step is absolutely crucial to figuring out the slope.
Before digging call 811 to have utility lines marked.
As a general rule gutter slope is set at 1 4 inch per 10 feet of guttering.
For example if you have 30 feet of guttering the calculation is 1 4 x 3 0 75 i e.
The flexible design easily bends and holds its shape and can be extended from 25 in.
Bury the drain pipe at a slope consistent with the final grade around the home i e sloped 0 5 inch per foot away from home for 10 feet.
Purchase pipe once you have determined the route of the line you can figure out the pipe lengths you ll need to.
