This class deals with all types of roads, pavements, footways, and surfacing works, including their construction layers and finishes. It covers both temporary and permanent roadworks, as well as paved areas around structures.
1. Scope
Class R includes:
- Road formation and preparation.
- Sub-base, base, and surfacing layers.
- Flexible pavements (bituminous/asphalt).
- Rigid pavements (concrete roads, slabs).
- Block, slab, or stone pavings.
- Footpaths, cycle tracks, and pedestrian pavements.
- Ancillaries such as kerbs, channels, edging, jointing, and seal coats.
- Temporary haul roads or access pavements.
2. Subdivision of Items
Work under Class R is typically subdivided into:
- R.1: Road formation and subgrade
- Trimming, compacting, proof rolling.
- R.2: Sub-base layers
- Granular sub-base (GSB), water-bound macadam (WBM), cement-treated sub-base (CTSB).
- R.3: Base layers
- Wet mix macadam (WMM), dry lean concrete (DLC), bituminous macadam (BM).
- R.4: Surfacing (Flexible Pavements)
- Dense Bituminous Macadam (DBM), Bituminous Concrete (BC), Premix Carpet, Surface Dressing.
- R.5: Surfacing (Rigid Pavements)
- In-situ concrete pavement, jointed reinforced concrete slabs.
- R.6: Pavings
- Stone setts, precast blocks (paver blocks), tiles, or slabs laid on bedding.
- R.7: Ancillaries
- Kerbs, channels, edging, tactile paving, seal coats, joint fillers.
3. Method of Measurement
- Formation and sub-base – measured in square metres (m²) or cubic metres (m³).
- Granular or bituminous layers – measured in tonnes (t) or m³, depending on BOQ convention.
- Concrete pavements – measured in cubic metres (m³) or square metres (m²).
- Kerbs, channels, and edgings – measured in linear metres (m).
- Block/stone pavings – measured in square metres (m²).
- Seal coats and joints – measured in m² (area) or per item.
4. Item Coverage
Unless stated otherwise, each item includes:
- Preparation of formation, cleaning, watering, and compaction.
- Transporting, spreading, laying, rolling, and compacting of materials.
- Supply of bitumen, cement, aggregates, and admixtures.
- Joints, sealants, curing, and surface finishing.
- Wastage, testing, and quality control.
- Temporary works required for execution.
5. Notes for BOQ Preparation
- Clearly specify thickness of each road layer (e.g., 150 mm GSB, 250 mm WMM, 50 mm DBM).
- For bituminous works, mention binder content (e.g., 5.4% VG-30 bitumen).
- Concrete pavements must state grade (e.g., M40) and joint details.
- For paver blocks, specify type (interlocking, hexagonal, zig-zag), size, and thickness (e.g., 80 mm M40).
- Kerbs should mention material (precast concrete, stone) and dimension (e.g., 300 × 150 mm).
- State whether works are temporary haul roads or permanent pavements.
6. Example BOQ Items
- R.1.1: Preparation and compaction of road formation for carriageway, measured per m².
- R.2.1: Granular sub-base, 200 mm thick, compacted in two layers, measured per m³.
- R.3.1: Wet Mix Macadam (WMM), 250 mm compacted thickness, measured per m³.
- R.4.1: Dense Bituminous Macadam (DBM), 50 mm thick, binder VG-30, measured per tonne.
- R.4.2: Bituminous Concrete (BC), 40 mm thick, binder VG-40, measured per tonne.
- R.5.1: RCC pavement M40, 300 mm thick, jointed, measured per m².
- R.6.1: Interlocking paver blocks, 80 mm thick, M40 grade, laid over 50 mm sand bedding, measured per m².
- R.7.1: Precast concrete kerb stones 300 × 150 mm, laid to line and level, measured per m.
