ROAD PAVEMENTS – BITUMINOUS BOUND MATERIALS Contents

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Volume 2 Series NG 900 Notes for Guidance on the Specification for Road Works Road Pavements – Bituminous Bound Materials during transportation, off loading, laying and rolling. ii) Cooling of bituminous layers, factors affecting cooling (wind chill, temperature) and time available for compaction (particularly during short night time lane possessions) needs to be borne in mind whilst planning for laying operations. iii) Human factors and health, welfare and safety implications should be given extra consideration for winter and night time working. 7 The requirements of BS 594987 and Clause 903 still apply, unless specifically amended by this Clause. January 2010 33 33
January 2010 34 TABLE TABLE NG NG 9/12: 9/12: Classification Classification of of Sites Sites by by Traffic Traffic and and Stress Stress Condition Condition for for Resistance Resistance to to Permanent Permanent Deformation Deformation Deformation of of Performance Performance Related Related HRA HRA Surface Surface Course Course and and Binder Binder Course Course (performance (performance related related design design design mixtures) mixtures) to to Clause Clause 943 943 I & II IA & IIA III IIIA IV IVA A B C D E Motorway (main line) Site Definition Dual carriageway (all purpose) non-event sections Dual carriageway (all purpose) minor junctions Single carriageway non-event sections Single carriageway minor junctions As I and II above but with contraflow anticipated during summer months F Site Category G1 L Approaches to and across major junctions (all limbs) Gradient 3% to 10%, longer than 50m Roundabout As III above, but with contraflow anticipated ruing summer months or in a south-facing cutting uphill G2 Gradient steeper than 10%, longer than 50m As IV above, but with contraflow anticipated during summer months or in a south-facing cutting uphill Approach to roundabout, traffic signals, pedestrian J/K crossings, railway level crossings and similar Traffic at Design Life (Commercial vehicles per lane per day) Up to 250 251 – 500 CLASS 1 Table 9/38, Classification 1 501 – 1000 1001 – 1500 Table 9/38, Classification 2 CLASS 2 >1500 Volume 2 Series NG 900 Notes for Guidance on the Specification for Road Works Road Pavements – Bituminous Bound Materials
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ROAD PAVEMENTS – BITUMINOUS BOUND MATERIALS Contents

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