SECTION B - Derry City Council

210 RESIN BOUND GRAVEL (FOR NEW VEHICULAR SURFACE) – SECTION 2
o Subgrade improvement layer (Capping): as section Q20 clause 200 if required,
- Compacted thickness: 0-600 mm
o Granular sub-base: as section Q20, 110 mm Crusher run stone, lay geotextile
o Terram 1000 below as Q20
o Compacted thickness: 225 mm
o Granular road-base: as section Q20, 65 mm Crusher run stone,Thickness: 190
mm
o Base course: 25 mmDBM B/C toBS 4987/ 6.5,Thickness: 60mm
o Wearing course: 10 mm aggregate bitmac
- Binder: Cold bitumen emulsion to BS 434-1, class K1 60.
- Chippings: To BS EN 13043, nominal size 10 mm.
- Application: Uniformly spray binder at a rate of 2 L/m². Cover with
clean chippings.
- Provide 100-105% shoulder to shoulder coverage to BS 598-108 and
compact.
- Thickness: 30 mm
o Surface treatment: 18 mm deep layer of resin bound gravel ‘Sure Set 6mm
‘Barley Beach’, where shown on the Drawing Nr 83473 - 05, as supplied by
SureSet UK Ltd, 32 Deverill Road, Trading Estate, Sutton Veny, Warminster,
England BA12 7BZ, Tel 01985 841180. A sample of resin bound gravel is to be
provided prior to commencing this item, + provision of warranty of min 10years
o Compaction to all layers: By heavy roller or other appropriate means, adequate to
resist
- subsidence or deformation of the completed roads/ pavings when in
use. Do not crush
- chippings.
o Completion: Before trafficking, remove excess chippings. Laid to falls as agreed
on site.
230 LAYING GENERALLY
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o
o
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Finished surfaces:
Lines and levels: To prevent ponding.
Overall texture: Even.
State at completion: Clean.
240 COLD WEATHER WORKING
• Frozen materials: Do not use.
• Freezing conditions: Do not lay pavings.
• Cold bituminous surface dressings: Do not apply when ambient temperature is
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