Irrigation System Planning Plant: Yew Term:  Non-Potable
Yews <ul><li>Genus: Taxus </li></ul><ul><li>Evergreen shrub </li></ul><ul><li>Many varieties from 2’ to 20’ tall. </li></u...
Non-potable <ul><li>Water that is not safe for human consumption </li></ul><ul><li>Usually used in a recirculating system ...
Overlap <ul><li>Head to head spacing: </li></ul><ul><li>The heads are spaced so that they overlap from head to head.  </li...
Locating Sprinklers <ul><li>Usually Circular patterns </li></ul><ul><li>Rectangular – less common </li></ul><ul><li>Want t...
Square <ul><li>The easiest to plot,  </li></ul><ul><li>Some areas that are going to be covered by all four heads causing s...
Triangular <ul><li>Nozzles are staggered </li></ul><ul><li>Space heads further apart (usually around 60% of the diameter o...
Only water the plants <ul><li>Avoid watering the walkways by using a combination of spray patterns. 90 degree (quarter) 18...
Working with Corners around a Building
Obstacles What kind of spacing is this?
Flagpole area <ul><li>Draw in the placement of the sprinklers </li></ul><ul><li>We have a combination of sizes </li></ul><...
Tomorrow you will begin installation <ul><li>How many feet of PVC will you need? </li></ul><ul><li>How many couplers? </li...
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9 30 Irrigation System Planning

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9 30 Irrigation System Planning

  1. 1. Irrigation System Planning Plant: Yew Term: Non-Potable
  2. 2. Yews <ul><li>Genus: Taxus </li></ul><ul><li>Evergreen shrub </li></ul><ul><li>Many varieties from 2’ to 20’ tall. </li></ul><ul><li>Exposure: Shade to full sun </li></ul><ul><li>Flat needles up to 1” long </li></ul><ul><li>Used for hedges or foundation plantings </li></ul><ul><li>Tend to be over-pruned </li></ul>
  3. 3. Non-potable <ul><li>Water that is not safe for human consumption </li></ul><ul><li>Usually used in a recirculating system with storm or waste water </li></ul><ul><li>In irrigation plans, non-potable water is always coded PURPLE. </li></ul><ul><li>Purple covers are recommended </li></ul>
  4. 4. Overlap <ul><li>Head to head spacing: </li></ul><ul><li>The heads are spaced so that they overlap from head to head. </li></ul><ul><li>Each head should throw water far enough so that it hits the next head. </li></ul>
  5. 5. Locating Sprinklers <ul><li>Usually Circular patterns </li></ul><ul><li>Rectangular – less common </li></ul><ul><li>Want the most even distribution of water possible </li></ul><ul><li>Begin along a sidewalk or border that you do not want to get wet </li></ul>
  6. 6. Square <ul><li>The easiest to plot, </li></ul><ul><li>Some areas that are going to be covered by all four heads causing some over watering. </li></ul><ul><li>Sprinklers are spaced relatively close when using a square pattern (about 50% of the diameter of the throw). </li></ul><ul><li>Need more heads to cover an given area. </li></ul>
  7. 7. Triangular <ul><li>Nozzles are staggered </li></ul><ul><li>Space heads further apart (usually around 60% of the diameter of the throw ) </li></ul><ul><li>Less overlap </li></ul><ul><li>Uses fewer heads </li></ul><ul><li>Chose a side of a rectangular or square area as a baseline. </li></ul><ul><li>Plot a heads in each corner. </li></ul><ul><li>Place the third head in between and across from the two you have plotted </li></ul>
  8. 8. Only water the plants <ul><li>Avoid watering the walkways by using a combination of spray patterns. 90 degree (quarter) 180 degree (half) 360 degree (full) </li></ul>
  9. 9. Working with Corners around a Building
  10. 10. Obstacles What kind of spacing is this?
  11. 11. Flagpole area <ul><li>Draw in the placement of the sprinklers </li></ul><ul><li>We have a combination of sizes </li></ul><ul><li>Use the rainbird chart to get the recommended coverage areas and the flow rates for each spray nozzle </li></ul><ul><li>Plan your piping – will ¾” pipe work for the whole area? </li></ul>
  12. 12. Tomorrow you will begin installation <ul><li>How many feet of PVC will you need? </li></ul><ul><li>How many couplers? </li></ul><ul><li>How many Ts? </li></ul><ul><li>How many 90s? </li></ul><ul><li>How many 45s? </li></ul><ul><li>How many end caps </li></ul>

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