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

SPRAY SEALING STANDARD SPECIFICATION ROADWORKS DoI REFERENCE TEXT December 2015 Page 64 8.14.2 Rolling Rate Roll the treated surface with self-propelled rubber tyred rollers with a minimum tyre pressure of 600 kPa and a minimum wheel load of 1 tonne. Roller speed on the first pass to be between 5 and 10km/h, with subsequent passes between 15 and 25 km/h. Conform to the following: - Entire area to receive one roller pass immediately after covering. - 75% of rolling within 1 hour of covering. - 100% of rolling within 2 hours of covering. Minimum Rolling Rate: 1 roller hour per 2,000 litres of binder. Ensure a uniform distribution of aggregate. Drag broom to distribute surplus aggregate but do not dislodge embedded aggregate. Drag broom before 50% of rolling is complete. Drag brooms are not to be rotary brooms. For two coat treatments, double the specified rolling rate if the second coat is to be applied immediately or the surface is not to be trafficked. Roll in daylight hours only. Sweep all loose aggregate from the carriageway at completion of rolling. Ensure aggregate on the final surface is uniformly distributed and firmly held by the binder. Adjust drag broom to distribute surplus aggregate, but not to dislodge embedded aggregate. Ensure aggregate on the final surface is uniformly distributed, and firmly held by binder. Re-roll the surface after sweeping to ensure uniform bedding of aggregate in binder. 8.14.3 Rolling Rate Airstrips Roll the treated surface with at least one selfpropelled rubber tyred roller with a minimum weight of 20 tonnes. Rubber Tyred Minimum Rolling Rate: One 20 tonne roller hour per 800 litres of binder. Steel Drum Roller Minimum Rolling Rate: One pass on the second coat. Ensure a uniform distribution of aggregate. Drag broom to distribute surplus aggregate but fo not dislodge embedded aggregate. Drag broom before 50% of rolling is complete. Drag brooms are not to be rotary brooms. Ensure aggregate on the final surface is uniformly distributed and firmly held by the binder. Roll in daylight hours only. Using a suction type broom to sweep all loose aggregate from the carriageway at completion of rolling, remove from site. Re-roll the surface after sweeping to ensure uniform bedding of aggregate in binder. 8.15 TRAFFIC ON RESEALS Cross reference; PROVISION FOR TRAFFIC, Workzone Traffic Management, 2.4.7 Traffic Escort Vehicle Resealing Works. Co-ordinate work to minimise traffic delays. Prohibit traffic - until at least 3 passes of a roller has taken place or until sufficient rolling has taken place to prevent damage to the applied seal, whichever is greater; and - from adjacent strip of roadway during spraying. 8.16 WASTE MATERIAL In urban areas, remove all excess aggregate by suction broom. Ensure no aggregates are distributed onto the verge. Remove from the site and dispose of all waste material. Clean and remove all aggregate from the shoulders and verges in urban areas. Urban areas aggregate removal / sweeping regime: Initial sweep after rolling has concluded Second sweep after 24 hours Third sweep after 48 hours. 8.17 REPORTING 8.17.1 Spraysheets Supply to the Superintendent at the end of each days production spraysheets that record the following information for all spray runs conducted. - Contractors Name - Project Details - Contract Number - Specification schedule number - Road Name - Product Type Sprayed - Precoat type used, Precoat litres / m3 - Aggregate supplier, Aggregate Type, Aggregate size - Run number, Start Time of spray run - Pavement Temperature, Ambient Temperature - Start Chainage of spray run actual km of road - End chainage of spray run actual km of road