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Standard specification for road works 2015/2016



Standard specification for road works 2015/2016


Standard specification for road works; Reports; PublicationNT




Made available via the Publications (Legal Deposit) Act 2004 (NT).; Check within Publication or with content Publisher.


miscellaneous provisions ■ provision for traffic ■ clearing grubbing and rehabilitation ■ earthworks ■ conformance testing ■ pavements and shoulders ■ stabilisation ■ spray sealing ■ dense graded asphalt ■ slurry surfacing ■ miscellaneous concrete works ■ drainage works ■ protection works ■ road furniture and traffic control devices ■ pavement marking ■ landscape ■ ducting and conduits ■ traffic control signals ■ traffic counting stations ■ street lighting ■ directional (thrust) boring ■ measurement and payment ■ referenced documents ■ nt climate zones table ■ This document specifies the general standards of materials and workmanship required by the Department of Infrastructure for construction of civil road network assets




Roads -- Northern Territory -- Works -- Periodicals.

Publisher name

Department of Infrastructure

Place of publication



Second edition

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PAVEMENTS AND SHOULDERS STANDARD SPECIFICATION ROADWORKS DoI REFERENCE TEXT December 2015 Page 46 6. PAVEMENTS AND SHOULDERS 6.1 STANDARDS Conform to the following Standards and Publication unless specified otherwise: AS 1141 Methods for sampling and testing aggregates. AS 1289 Methods of testing soils for engineering purposes. NTMTM NT Materials Testing Manual. NTTM NT Test Methods 6.2 DEFINITIONS BASE (BASE COURSE): That upper-most layer of constructed material immediately above the subgrade or sub-base and below the pavement surface (sealed or unsealed) extending for the full width of the pavement and shoulder. IRI International Roughness Index. PAVEMENT: That portion of a road constructed for the structural support of, and to form the running surface, for traffic. The pavement structure refers to the pavement layers, in combination, above the subgrade surface, to support the traffic loadings. May be sealed or unsealed. Excludes the shoulders. SHOULDER: That layer of material immediately above the sub-base or subgrade and adjacent to the pavement. May be sealed or unsealed. SUB-BASE: One or more layers of material placed over the subgrade and below the basecourse extending for the full width of the pavement and shoulder. 6.3 MATERIAL PROPERTIES 6.3.1 Natural Gravel Obtain natural gravel from sources of naturally occurring deposits. Produce required properties by crushing, screening, mixing or other processes necessary. Ensure particles are tough, durable and of a tightly binding nature free of organic or other deleterious materials. Conform to Table 6.1 - Natural Gravel Particle Sizes and Table 6.2 - Natural Gravel Properties in the finished condition. Table 6.1 - Natural Gravel Particle Sizes AS Sieve (mm) Percentage Passing Type 1 Type 2 Type 3 Type 4 75.0 100 - - 100 37.5 80-100 100 - 80-100 19.0 50-80 70-100 100 60-100 9.5 35-65 50-80 70-100 50-95 4.75 25-50 35-65 50-80 40-80 2.36 15-40 25-50 35-65 30-65 0.425 7-20 10-30 15-35 20-50 0.075 3-13 4-16 6-20 5-25 Refer to PROJECT SPECIFIC REQUIREMENTS in the RFT for requirements. Generally Type 2 or Type 3 for Base (Sealed/Unsealed), Type 1, Type 2, Type 3 or Type 4 for Sub-base, and Type 3 for Shoulder Material.