RURALMassey University Effluent Pond

Effluent Pond Construction for Freestall Cow Barn, #4 Dairy

In-situ clay ponds require a lot of planning because weather plays a major role in the construction process as does testing the structure. A stand of Pine trees had to be removed from a gulley so excavated material from the pond could be compacted into the gulley to form one of the pond walls. Existing drainage in the area was diverted so it wouldn’t impact on the construction or the completed structure. Throughout the process all re-compacted clay was tested to ensure density requirements were achieved. This project (combined with the Cow House site works) won a Contractors Federation, Manawatu Branch, Construction Award for projects up to $ 250,000.

Key features of the work and/or statistics:

  • Investigate, design and construct to Practice Note 21, a trapezoidal shaped clay lined effluent pond. Site investigations included a full contour survey and permeability testing.
  • Pond has a working capacity of 4,600m³

Key equipment used:

  • Kobelco SK 210 – 20 Tonne excavator
  • 7 tonne Vibrating roller
  • D5 Bulldozer
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Massey University
Job No:
213 Stoney Creek Road, RD10, Palmerston North, 4470

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