ORBIT
®
SPRINKLER SySTEm DESIGNER™
InstallatIon GuIde
6. MaRK sPRInKleR, tRenCH and ManIfold loCatIons
before you begin this step you should study the maps carefully
and make adjustments to head placement, sprinkler zones,
piping, and manifold placement as necessary.
Please note that the maps provided are for guidance only and
can and should be adjusted based on actual conditions (i.e.
utilities, window wells, trees, etc.).
Use sprinkler flags to mark each head location. Use a
measuring tape to help ensure even spacing between heads in
the same zone.
Once the flags are all placed use marking paint to outline the
location of each manifold and all trenches. remember the
24" safety zone for utility lines and adjust your trenches and
manifolds accordingly.
Manifold Caution: Do not place manifolds near stairwells,
window wells, utilities, or in areas with a downward slope to
the house; avoid areas where the manifolds will be an
annoyance or hazard, such as walkways or the middle of play areas.
Trench Caution: Trench at least 2' away from any structures, foundations, window wells, stair wells, utilities
or any other areas which are highly susceptible to water damage in the event of broken sprinkler lines or
equipment.
Double check your trenching lines with your plan to make sure you have minimized the trenching and that
no trenches or manifolds were forgotten.
7. dIG tRenCHes
before you dig it is important that you check with your city, county, state and water municipality agencies
to ensure you are installing in compliance with local code and permit requirements.
you may chose to dig the trenches by hand or you can hire a professional to do it for you using a trenching
machine. This is usually the best route if significant trenching is required or if the ground is hard. You may
also consider renting a trenching machine and do it yourself if local code permits.
Trenches that will have more than four pipes in them need to be widened to accommodate all the pipes.
Trenches should not be less than 8" deep. If freezing is a concern then trenches should be at least 12"
deep. If you are installing anti-siphon valves please reference section 8 for placement guidance.
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