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Specification for coating steelwork on highway structures

Published:
Category: Structures (bridges, culverts & geotechnical) | Audiences: Road traffic engineers & consultants, Roading contractors

This is a prescriptive materials specification for coatings systems for steelwork on highway structures.

#20-17 Procurement - Invoice payment terms for all Waka Kotahi suppliers

Published:
Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors

This note is to advise that there is an instruction to staff to help to facilitate a quick turn-around on invoices to help businesses meet their costs.

Quantitative extraction of bitumen from asphalt mixes

Published:
Category: Materials , Surfacing , Testing , Specifications | Audience: Roading contractors

Test method to determine the bitumen content of asphalt mixes for the purposes of assessing compliance with specified requirements.

#20-08 Use of GAP65 as a drainage medium to retaining and geotechnical structures

Published:
Category: Technical advice note | Audiences: Road traffic engineers & consultants, Roading contractors

This note is to advise that there is an issue with the use of GAP65 as a drainage material and, as a result, this material must not be used unless its suitability for the works as designed is demonstrated.