• Trench Drain Form Request

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  • 9. Angle of approach to trench

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  • 10. Is the trench central to the catchment width?
  • If no, give details

  • 12. Is temporary ponding allowed?
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    Trench Drain Information

  • 13. Outlet type
  • 14. Outlet position
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  • 16. Is the trench run same length as catchment area length?
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  • If no, give details

  • 17. Is there a depth restriction?
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  • All information to be provided by ACO New Zealand is provided in good faith with the belief that the information used is correct and that any assumptions made are valid. It is the specifier's responsibility to check and confirm that any information provided is acceptable and suitable for use.

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