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ONLINE SERVICES: We are currently experiencing issues with all our online services at the moment. We are working to resolve the services as soon as possible. We apologise for any inconvenience caused.

COVID-19 SERVICES UPDATE: Information on Waka Kotahi services, extensions and more

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Specifications


Pilot specification for in-situ subgrade stabilisation (B9)

Published: 2020

This specification shall apply to the in-situ stabilisation of subgrade layers comprising either natural in situ soils, imported fill materials or a combination of both using cement, lime or a combination of these.


Earthworks construction (F1)

Published: 1997

This specification and guidance notes cover the construction of earthworks including the clearing and removal of all obstacles within the limits of the earthworks; the excavation of all cuts, including excavation below the final subgrade surface; the excavation of borrow areas, benches and surface drainage facilities; the carting of the excavated material to fill or waste; and construction of the fills and subgrade; shaping, trimming, grassing and maintaining of the works.


Lime for use in soil stabilisation (M15)

Published: 2012

This specification and guidance notes apply to the purchase of calcium oxide or calcium hydroxide for use in soil stabilisation. Calcium oxide and calcium hydroxide are active ingredients present within the materials supplied under the names of quicklime and hydrated lime respectively.


Benkelman beam deflection measurements (T1)

Published: 1977

This test procedure covers the determination of the rebound deflection of a pavement under a standard wheel load and tyre pressure, with or without temperature measurements.

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