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A two percent (or 1:50) is considered a good slope for the drainage of lawn areas. The type of soil you have will also affect drainage. With a more sandy soil a flatter slope may be fine.

Q: How much slope is needed for proper drainage in lawns?

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Installing underground drainage pipes involves digging a trench, laying the pipes, connecting them with fittings, and backfilling the trench. It's important to properly slope the pipes to ensure proper drainage and to use the right materials for the job. It's recommended to hire a professional for this type of installation.

The proper slope for newly installed gutters is 1/4 inch of slope for every 10 feet of gutter. This slope keeps water from standing after a heavy rain.

The maximum number of drainage fixture unit on a 2" drain line depends on the slope of the drain line. 21 units are allowed if the slope is 1/4' per foot, and 26 units are allowed if the slope of the line is 1/2" per foot.

For a very short distance. The water will run out and leave the solids. 1/8 to 1/4 inch per foot is proper.

2 ordered pairs are needed to calculate slope.

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Two or more coordinates are needed to determine the slope of a line

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it is impossible to tell the slope of a line graph without proper points to evaluate from.

Another coordinate is needed to determine the slope of the line.

Another coordinate is needed to work out the slope.

Another set of points are needed to find the slope.