Resources

Two aspects of hydraulic design are addressed: the determination of a design peak flood flow rate; and the estimation of channel flow resistance.

This report records part of a research programme on tourism benefits from sealing unsealed roads to address concerns raised that the Transit New Zealand project evaluation procedures may not fully account for benefits arising from improving roads in …

The results of an experimental study carried out in 1993 of the use of riprap to protect bridge piers against scour are presented.

A research project was undertaken in 1994 to investigate motorists' perceptions of discomfort and risk factors associated with using unsealed roads in New Zealand.

The report presents a definition of the scope and coverage of an ideal manual for the design of roading structures to meet the needs of Transit New Zealand and compares the present Transit New Zealand Bridge Manual and the 1992 Austroads Bridge Desig…

The British Pendulum Tester (BPT) is used to assess the skid resistance of road surfaces.

This study investigates the cost effectiveness of conventional and alternative construction and maintenance procedures for unsealed roadways.

Aternatives to automotive gas oil (AGO) used to flux (soften) bitumen used in chipsealing have been investigated.

Most New Zealand pavements comprise a granular base with a thin bituminous surfacing.

There is anecdotal evidence that pavement maintenance patches fail within a few years and research was undertaken to develop a framework for predicting the life of patches to enable asset managers to choose the right treatment to give the life requir…