Brookvale Oval Investigation - Warringah Council - NSW Government

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4.1.7 Operating Pressures The pressure at the sprinkler heads should ideally show variations with a maximum variation of 10 %. Pressure variations were identified throughout greater than 10% with some area losses being as high as 40%. This is normally created by incorrect hydraulic design or may indicate leaks and thus loss of pressure within the system. No major leaks were evident. The variation of sprinkler nozzle sizes apparent in some zones does effect the operating pressure of these zones. The pressure was measured for a selection of sprinkler heads to determine if the system was operating to its designed capacity. Sprinkler nozzle size variation between zones should be avoided to allow matching of operating pressures and outputs. No major leaks were evident on this site. It is recommended that after system upgrades that operating pressures be checked and set to system recommendations as determined by sprinkler make and nozzle size requirement. This assists in determining the entire hydraulic characteristics of the system. The hydraulic design of the system is largely unknown and several assumptions have been made. Further testing after the system upgrade will assist in determining hydraulic efficiency. As the in ground pipe work appears sound with no leaks, the pipe work does not require further upgrade at this stage. Decisions relating to pipe work and irrigation system upgrade should not be made until after the recommended system adjustments have been carried out and system hydraulic characteristics have been determined. Additionally the irrigation system should be operated with the pump in place and operational to determine an accurate assessment of the system performance with its primary intended water source. ● Irrigation Management Pty Ltd – ABN 92 116 740 160 ● ● Unit 9, 8 Millennium Court, Silverwater, <strong>NSW</strong> 2128 ● ● Phone: 02 9748 6178 ● Fax: 02 9748 6179 ● ● Web: www.irrigationmanagement.com.au Page 16
Figure 5 Variation in Turf Coverage Figure 6 Poor sprinkler alignment Figure 7 Damaged or missing sprinkler ● Irrigation Management Pty Ltd – ABN 92 116 740 160 ● ● Unit 9, 8 Millennium Court, Silverwater, <strong>NSW</strong> 2128 ● ● Phone: 02 9748 6178 ● Fax: 02 9748 6179 ● ● Web: www.irrigationmanagement.com.au Page 17
Page 1 and 2: Brookvale Oval Investigation Warrin
Page 3 and 4: Executive Summary Brookvale Park is
Page 5 and 6: 1. Introduction Brookvale Park is a
Page 7 and 8: The presence of the thatch material
Page 9 and 10: The daily watering schedule may be
Page 11 and 12: 3. Irrigation System Audit An audit
Page 13 and 14: • Ideally the Sea Eagles would li
Page 15 and 16: The benefits and ramifications of e
Page 17 and 18: The following diagrams show potenti
Page 19 and 20: With the available time left after
Page 21 and 22: 6. Recommendations The following re
Page 23 and 24: Appendix 2: Photographs Overview of
Page 25 and 26: Appendix 3: Council, Stakeholders &
Page 27 and 28: Parks Leisure Australia • There i
Page 29 and 30: Brookvale Oval Audit Report Includi
Page 31 and 32: FIGURES Figure 1 Sprinkler layout .
Page 33 and 34: 2: EXECUTIVE SUMMARY Irrigation Man
Page 35 and 36: 3:METHODOLIGIES To assess the irrig
Page 37 and 38: Figure 2 Sprinkler spacing ● Irri
Page 39 and 40: Figure 4 Zone numbering (Hunter ICC
Page 41 and 42: 4.1.2. Readily Available Water (RAW
Page 43: 4.1.6. Sprinkler Heads Each sprinkl
Page 47 and 48: Table 1 Sprinkler Legend Zone / Spr
Page 49 and 50: Sprinkler not rotating 10.1 Toro 64
Page 51 and 52: Table 3 : Zone 6,7,10 Data Row Time
Page 53 and 54: Any misalignment should be adjusted
Page 55 and 56: 5: IRRIGATION SCHEDULING Irrigation
Page 57 and 58: 6: RECOMMENDATION FOR GROUNDS SYSTE
Page 59 and 60: 9: PLAN FOR ACTION 9.1 Limitations
Page 61 and 62: 10.1. 3: Management • Practice ir
Page 63 and 64: APPENDIX 2: Toro 640 sprinkler SPAC
Page 65 and 66: Zone / Sprinkler Sprinkler Make Mod

Brookvale Oval Investigation - Warringah Council - NSW Government

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