Skip to content

Access keys for nzta.govt.nz

  • h Home
  • m Menu
  • 0 Show list of access keys
  • 2 Skip to content
  • 3 Skip to top

Specifications


Geotextiles (F7)

Published: 2003

This specification and guidance notes set out the material and construction requirements for geotextiles for use as separation and/or filtration applications in highway earthworks and pavements. Please note major changes in the 2003 edition of the F/7 specification.


Filter fabric pore size distributions (T6)

Published: 1983

This method can be used to determine the pore size distribution of the openings in a filter fabric by sieving.


Filter fabrics permeability (T7)

Published: 1983

This method can be used to provide a simple quality control test to determine the permeability of a fabric. Permeability measured by this test is expressed as millimetres head loss at a flow velocity of 10mm/second.

For further information contact pavements@nzta.govt.nz.

Top