Lawn Mowers

Design rules for an underground sprinkler system

 Design rules for an underground sprinkler systemThis is a continuation from our last post about planning an underground sprinkler system. This post will cover some of the design rules associated with planning an underground sprinkler system for residential homes. Basic Design rules for an underground sprinkler system are important to ensure proper lawn watering and a healthy lawn.

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Design rules for an underground sprinkler system

Areas covered by one circuit must be water together so they should have the same watering needs.

Each circuit should use no more than 75% of the available flow rate. To determine the flow rate of each circuit, add together the flow rate of the sprinkler heads as given in the catalog description.

Do not mix different types of sprinkler heads e.g. impulse, spray, shrub bubblers etc. on one circuit.

Take your time planning the circuits. It may take two or three tries to get it right.

Next, draw in the pipe going from the house water supply to the manifold. From there, draw in every valve going to every head on the circuit. Plan to use the same trench for installing two or more waterlines whenever possible. Avoid going under walks or driveways or near trees. If you are using PVC or other rigid pipe, draw straight lines with right angle turns, you can lay polyethylene pipe in curves.

Following these Design rules for an underground sprinkler system will make a huge difference in your success as a lawn gadener.

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