A two coat chip seal shall be applied to the prepared basecourse surface:
The first layer shall consist of the supply and spraying of NZTA Specification P/3 First Coat Sealing 180/200 penetration grade bitumen and include the supply, spreading and rolling of NZTA Specification M/6 Sealing Chip Grade 3 chip at a spread rate of 75 m²/m³.
The second layer shall consist of the supply and spraying of NZTA Specification P/3 First Coat Sealing 180/200 penetration grade bitumen and include the supply, spreading and rolling of NZTA Specification M/6 Sealing Chip Grade 5 chip at a spread rate of 150m²/m³.
Definitions in this section
NZTA
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