Territory Stories

Standard specification for road works 2015/2016

Details:

Title

Standard specification for road works 2015/2016

Collection

Standard specification for road works; Reports; PublicationNT

Date

2015

Description

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

Notes

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

Language

English

Subject

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

Publisher name

Department of Infrastructure

Place of publication

Palmerston

Edition

Second edition

Parent handle

https://hdl.handle.net/10070/265830

Citation address

https://hdl.handle.net/10070/456054

Page content

PAVEMENT MARKING STANDARD SPECIFICATION ROADWORKS DoI REFERENCE TEXT December 2015 Page 105 final thickness of 2.5 mm 0.5 mm for application by screeding, trowelling or extrusion methods. Glass beads are to be Class C (intermix 20 to 30 % by mass) and Class D. As well as the mixed in glass beads additional Class D beads shall be uniformly applied to the surface of thermoplastic at the rate of 0.40 kg/m2 as part of the application process and before the material has commenced to set. The marking produced shall be uniform in texture, width and thickness and the surface substantially free from blisters, streaks, lumps and other defects. Remove any occurrence of overspray and gun dribble. 15.7.4 Setting out The location of all pavement markings on new surfaces, including reflective raised pavement markers, shall be set out by spotting with paint or other approved method prior to application of the markings. The location of all pavement markings over existing markings shall match the existing except where directed otherwise. For continuous thermoplastic pavement marking, 50 mm drainage gaps shall be provided, at a maximum spacing of 6m +1m, to allow adequate drainage of the pavement surface. Nominate in the Contract Management Plan the method of identifying the location and spacing for these gaps. 15.8 GLASS BEADS WITNESS POINT Use Intermix glass beads conforming to AS/NZS 2009 and APAS specification 0042 with the exception of size, and conforming to the size distribution requirements in Table 15.1 Glass Beads Size Distribution. Witness Point - Submit a 'Certificate of Compliance' of the glass beads with the relevant Australian Standard and APAS specification. Table 15.1 Glass Beads Size Distribution Sieve Size (Microns) % Retained % Passing 1180 0 3 97 100 850 5 20 80 - 95 425 65 95 5 35 Pan 010 - 15.9 SETTING OUT New work: Set out line marking to the line pattern specified in accordance with the standard drawing for line marking, CS 1520 and in accordance with AS 1742 including the setting out of arrows, letters, numerals and chevrons. Remarking: Remark along the line of the existing line marking and to the tolerances specified for new work. 15.10 APPLICATION WITNESS POINT Equipment: Apply the marking materials using a self-propelled mobile sprayer, hand sprayer, hand painting or hand screeding as directed by the Superintendent. Witness Point - Obtain approval from the Superintendent for the type of equipment to be used for applying pavement marking materials. Witness Point - Produce documented evidence to show that the spraying equipment has been calibrated in accordance with NTTM 405.1. Maximum application speed for Intermix glass beads is 12 km/h. Apply glass beads by low pressure or delivered by gravity dispenser. The application rates specified for glass beads are the amounts that are retained in the painted surface after 3 weeks of trafficking. Produce markings free from ghosting and raggedness on the sides and ends and parallel with the general alignment of the carriageway with the lines level, uniform and free from streaks. Substrate: Ensure that the road surface is free from dirt, loose detritus, mud and other extraneous matter, and is dry before and after painting operations. 15.10.1 Longitudinal Application Apply paint evenly to the road surface at the specified film thicknesses (Tolerance + 0.05 mm) and not more than five seconds after spraying apply the intermix glass beads. Ensure that the loss in glass beads after three weeks traffic does not exceed ten per cent of total applied. On all work, apply one coat of paint and glass beads to the road in the direction of traffic flow, where possible. For remarking, apply one coat of paint and glass beads to the surface in the direction of traffic flow, where possible.