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Displaying 1 - 10 results of 23 for ""

Unbound road base and sub-base aggregates evaluation

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

These notes provide guidance for the engineer to aid in their decision to reject or accept a material proposed for use a basecourse or sub-bases used on state highways and other roadways constructed in accordance with TNZ B/3 performance based specif…

Pipe subsoil drain construction

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

Specification and guidance notes for F2 Pipe Subsoil Drain Construction.

Pipe culvert construction

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

Specification and guidance notes for pipe culverts including the construction of trenches; supply and placement of bedding; supply and laying of pipes; jointing of the pipes; construction of headwalls, wing-walls, aprons, drops, and intakes and outle…

Lime for use in soil stabilisation

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

This specification ahd guidance notes apply to the purchase of calcium oxide or calcium hydroxide for use in soil stabilisation.

Corrugated plastic pipe subsoil drain construction

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

This specification and guidance notes refer to the use of perforated corrugated plastic pipe of up to 110 mm nominal outside diameter in subsoil drains under light duty conditions, eg for use in agricultural land, playing fields and lightly loaded or…

Filter fabrics permeability

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

This method can be used to provide a simple quality control test to determine the permeability of a fabric.

Fabric wrapped aggregate subsoil drain construction

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

This specification and guidance notes apply to the construction of subsoil drains which consist of geotextile lined trenches filled with drainage aggregate.

Geotextiles

Published:
Category: Construction , Pavement & surfacing , Specifications | Audiences: Road traffic engineers & consultants, Roading contractors

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.

Repeated load triaxial (RLT) testing for pavement materials

Published:
Category: Construction , Pavement & surfacing , Specifications | Audience: Roading contractors

T15 is an aggregate testing specification, its purpose is to standardise the test conditions used in the repeat load triaxial test.