specification for subdivision construction of road works and drainage
specification for subdivision construction of road works and drainage
specification for subdivision construction of road works and drainage
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R4.2.7 Finish<br />
The completed seal shall produce a well bonded uni<strong>for</strong>m surface free from over-sprayed, undersprayed<br />
or under-covered areas <strong>and</strong> an excessive quantity <strong>of</strong> loose aggregate.<br />
The completed seal may be inspected by the Engineer <strong>and</strong> no sealing plant shall be removed from<br />
the site until the work has been approved.<br />
R4.3 Asphalt (Hot Mix) Surface<br />
R4.3.1 Delivery<br />
All delivery vehicles shall be in good mechanical condition. Vehicle bodies shall be such that the<br />
asphalt cannot leak or spill <strong>and</strong> shall be fitted with covers <strong>of</strong> such size, thickness <strong>and</strong> material as to<br />
protect the load from the weather.<br />
When directed by the Engineer, or where the lead exceeds 110km, or where the ambient temperature<br />
is below 10ΕC <strong>and</strong> the lead exceeds 50km, the vehicle body <strong>and</strong> the cover shall be suitably insulated.<br />
The interior <strong>of</strong> each vehicle body shall be cleaned <strong>of</strong> all <strong>for</strong>eign materials <strong>and</strong> lightly lubricated as<br />
necessary with a slightly detergent solution or other approved material. All <strong>for</strong>eign material <strong>and</strong><br />
excess lubrication shall be removed prior to loading the vehicle.<br />
Delivery dockets showing the following written in<strong>for</strong>mation shall be available to the Engineer.<br />
• Quantity <strong>of</strong> material.<br />
• The date <strong>and</strong> time <strong>of</strong> loading.<br />
• The name <strong>of</strong> the supplier.<br />
• The identification number <strong>of</strong> the vehicle.<br />
• The size <strong>of</strong> the asphalt <strong>and</strong> the location reference <strong>of</strong> the plant at which the asphalt<br />
was manufactured.<br />
R4.3.2 Construction Plant<br />
Sprayers:<br />
Sprayers shall be capable <strong>of</strong> spraying the tack coat uni<strong>for</strong>mly through jets in a spray bar at the<br />
desired rate <strong>of</strong> application up to a width <strong>of</strong> 2.5m. The spray bar shall be fitted with end shields.<br />
Pressure type sprayers issued <strong>for</strong> spraying bitumen emulsion shall be capable <strong>of</strong> operating at a<br />
continuous pressure <strong>of</strong> 175kPa.<br />
Pavers:<br />
Pavers shall be self-propelled <strong>and</strong> shall be equipped with hoppers <strong>and</strong> distributing screws <strong>of</strong> the<br />
counter rotation type to place the asphalt evenly in front <strong>of</strong> the screed. Means shall be provided to<br />
heat the screed uni<strong>for</strong>mly over its full width.<br />
34<br />
Specification <strong>for</strong> Subdivision Construction <strong>of</strong> Road Works <strong>and</strong> Drainage<br />
Rev. 1 – February 2013
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