Your Dam Your Responsibility (PDF~1.2MB)

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D Figure C-4: Design guide for a farm dam not exceeding 3 metres in height or 20 ML capacity with no potential hazard. A EMBANKMENT ELEVATION (Cross-Section of Creek) Preferable to crown the crest approximately 10% of bank height to allow for initial settlement Natural Surface Strip off top soil and organic material Freeboard 1 Strip off top soil and organic material 1 2 2 Core trench excavation See Figures C3, C4 Core trench excavation Spillway cut into natural material. Batter slope may be steeper than shown if in sound rock Creek Bed Concrete Cut-off collar PIPE TRENCH DETAIL Compacted backfill Note: Selected earthfill (clayey material) should be placed in layers so that the compacted material is no thicker than 150-mm. 200-mm outlet pipe in trench in natural material. (see detail) 1 A 1 1 Concrete encasement to 1 top of outlet pipe to minimise seepage problems Drawing is Not to Scale 3.5-m wide crest with 150-mm thick crest capping of well graded gravel Crest Slope Valve Operating Shaft Embankment freeboard (1.2-metre minimum) Topsoil to be spread 150-mm thick Top Water Level 1 Topsoil to be spread 150-mm thick <strong>Dam</strong> Height (3-m maximum) 1 Compacted Selected Earthfill 3 Upstream Guard Valve 2.5 Outlet Conduit (200-mm minimum diameter) Gradient 1 in 100 Creek Bed Creek Bed 1 Isolating Valve located at least 1-metre clear of embankment toe Core trench to be constructed under whole bank length to a minimum depth of 0.5-metres into impermeable foundation 1 Outlet pipe to extend 1.5-m beyond embankment and 0-6-m above ground level to prevent blocking 150-mm thick reinforced concrete anti-seepage cut-off collars to extend 1-metre into undisturbed ground around and under pipe and 1-m above pipe into embankment fill 3-m minimum 81
82 Appendix D <strong>Dam</strong> Safety Emergency Plan
Page 1 and 2:
Irrigation and Commercial Farm Dams
Page 3 and 4:
ii Published by the Victorian Gover
Page 5 and 6:
iv Contents 6 Safety Surveillance .
Page 8 and 9:
1 Introduction It makes good busine
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2 Risks Posed by Dams 2.1 Owner’s
Page 12 and 13:
2 Risks Posed by Dams The most comm
Page 14 and 15:
2 Risks Posed by Dams 2 Note: The r
Page 16 and 17:
3 Licensing Requirements for Farm D
Page 18 and 19:
3 Licensing Requirements for Farm D
Page 20 and 21:
4 Planning to Build a Dam It is imp
Page 22 and 23:
4 Planning to Build a Dam 4.3 Types
Page 24 and 25:
4 Planning to Build a Dam 4 2. Turk
Page 26 and 27:
4 Planning to Build a Dam becomes a
Page 28 and 29:
4 Planning to Build a Dam 4.6.2 Ext
Page 30 and 31:
5 Construction of a Dam Mixing tops
Page 32 and 33:
5 Construction of a Dam is inviting
Page 34 and 35:
6 Safety Surveillance 6.1 Purpose o
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6 Safety Surveillance QUICK VISUAL
Page 38 and 39: 6 Safety Surveillance 6 Warning: If
Page 40 and 41: 7 Operation and Maintenance of Dams
Page 48 and 49: 8 Dam Failure Emergency Section 8 i
Page 50 and 51: 8 Dam Failure Emergency Action 4. I
Page 52 and 53: 9 Decommissioning of Dams 9 The sit
Page 54 and 55: 10 Glossary of Terms Cut-off An imp
Page 56 and 57: 10 Glossary of Terms Monitoring Rec
Page 58 and 59: Publications directly relevant to f
Page 60 and 61: Appendix A A • probe - a ten-mill
Page 62 and 63: Appendix A Inspection Procedures Ge
Page 64 and 65: Appendix A A and the resistance to
Page 66 and 67: Appendix B 1. Seepage Problem Possi
Page 68 and 69: Appendix B Problem Possible Causes
Page 72 and 73: Appendix B 2. Cracking, Deformation
Page 76 and 77: Appendix B 3. Miscellaneous Problem
Page 78 and 79: Appendix B utlet Works and Concrete
Page 80 and 81: Appendix C The depth of the core tr
Page 82 and 83: Appendix C will be needed. In stabl
Page 84 and 85: Appendix C The width of the dischar
Page 86 and 87: Appendix C Other Pipe Details At th
Page 90: www.dsevic.gov.au
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