For further information contact pavements@nzta.govt.nz
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.
Published: 1983
This method can be used to determine the pore size distribution of the openings in a filter fabric by sieving.
Filter fabric pore size distributions (T6)
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.
