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  6. Standard Drawings
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  8. Construction Standards
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    17. CS-17 Concrete Work
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    20. CS-20 Berm Features
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    24. CS-24 Vegetation Planting & Gardens
    25. CS-25 Reinstatement
  9. Inspection & Testing Requirements
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    7. IT-7 Water Supply
    8. IT-8 Public Lighting
    9. IT-9 Network Utilities
Infrastructure Development Code

CS-11.2 Channels and Benching

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  1. A uniform semi-circular channel shall be formed in the concrete floor of the manhole and benched as shown on the approved drawings. The flow channel shall be formed so that it presents an even flow path through the manhole. The grade shall be even between inlet and outlet.
  2. Benching shall be floated to a dense, smooth hard surface using 3:1 sand/cement mortar and a steel float. Side branches shall be similarly formed with a smooth bend into the main channel.
  3. The standard of finish on the benching shall be U3 as specified in NZS 3114.

Definitions in this section

Approved drawings

 

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