Aggregate Abrasion Value - the standard measure of an aggregate’s resistance to abrasion.
The authority as defined in the Act.
Proprietary materials certified by a Product Acceptance Scheme, generally formulated to provide cohesion between bituminous layers.
|Cement bound granular mixture – a mixture of controlled graded aggregate using cement that sets and hardens by hydraulic reaction. This is a specific type of relatively strong hydraulically bound material (HBM) typically used for base layers in composite roads.
|California bearing ratio - a penetration test for the mechanical strength of soils and granular materials.
|Composite footway, footpath or cycle track construction
|A pavement comprising lean mix concrete or other hydraulically bound material (including cement bound granular mixtures) overlaid with a bituminous surface course or a bituminous surface and binder course.
|Composite road construction
|A pavement comprising concrete, lean mix concrete, CBGM base or some other hydraulically bound granular material with a bituminous overlay of 100 mm or more. Where the bituminous overlay is less than 100 mm or there is no bituminous overlay, the pavement is considered rigid.
|See ‘stepped joint’.
|A way constituting or comprised in a highway, being a way over which the public have a right of way on pedal cycles only, with or without a right of way on foot.
|Any opening, excavation, core or trench where the depth of cover over the apparatus is greater than 1.5 m but not including openings with a depth of cover intermittently greater than 1.5 m over lengths of less than 5 m.
|Design Manual for Roads and Bridges.
|Works required to prevent the occurrence of circumstances likely to cause danger to persons or property. See S52 of the Act for the formal definition.
|Foamed Concrete for Reinstatements.
|A structure where the base comprises a bituminous or granular material, or a combination thereof.
|A way over which the public has a right of way on foot only, not being a footway.
|A way comprised in a highway, which also comprises a carriageway, being a way over which the public has a right of way on foot only.
|A generic term describing a product at least one of whose materials components is made from a synthetic or natural polymer in the form of a sheet or a 3D structure and used in contact with soil or other materials in geotechnical and civil engineering applications.
|Hydraulically bound material – material comprising a mixture of soil and/or graded granular material with hydraulic binder and water that sets and hardens by hydraulic reaction.
|Works comprising the orderly replacement of excavated material, reasonably compacted to finished surface level, usually with a cold-lay surfacing. This technique is used when it becomes necessary to temporarily reinstate an excavation to permit immediate trafficking.
|The orderly placement and proper compaction of reinstatement layers to finished surface level, including any temporary materials.
|Repair to a compliant condition of a reinstatement that does not comply with the performance requirements of this Code.
|Los Angeles abrasion value – a measure of an aggregate’s resistance to abrasion.
|Large diameter core
|A core over 150 mm in diameter.
|Standard works that have been identified specifically in the undertaker’s annual operating programme or which, if not specifically identified in that programme, are normally planned at least 6 months in advance of works commencing.
|Manual of Contract Documents for Highway Works.
|An opening up to 60 mm wide and over 1 m long.
|A structure where the surface comprises setts, concrete blocks, brick pavers or paving slabs etc. laid on an appropriate sub-construction.
|Million standard axles – based on the expected traffic to be carried over 20 years. See S1.3.
|An opening over 60 mm and up to 300 mm wide and over 1 m long.
|See "The Act".
|Any opening, excavation or core that is not a micro trench, a narrow trench, a large diameter core, a small opening or a deep opening.
|The penetration grade of a bituminous binder.
|The orderly placement and proper compaction of reinstatement layers up to and including the finished surface.
|Polymer modified mastic asphalt to BS EN 13108-6.
|The favoured choice between permitted options.
|Product Acceptance Scheme
|Product Acceptance Scheme in accordance with 100 Series of the MCHW, Clauses 104.15 and 104.16 (such as British Board of Agrément certificates).
|Polished Stone Value.
|Small openings, openings less than 200 mm wide or other areas where conventional compaction equipment cannot be used effectively.
|A pavement quality concrete surface slab (that may be reinforced) which also performs as the base or a concrete base with less than 100 mm bituminous overlay. Where the bituminous overlay is 100 mm or more the pavement is considered to be composite.
|Road & footway structure
|The surface course, binder course, base and sub-base.
|Frames and surface boxes smaller than 600 mm x 600 mm.
An excavation with a reinstatement surface area, excluding the apparatus surface area, up to 2 m2 in road types 0, 1 and 2 and up to 4 m2 in road types 3 and 4 and in footways, footpaths and cycle tracks, that is not a large diameter core, a micro trench or a narrow trench.
|Skid Resistance Value – a measure of the frictional properties of a surface using a pendulum test device.
|A step where the reinstated binder and/or surface courses are made wider than the reinstatement below to provide higher resistance to water ingress.
The whole or any part of the following, irrespective of whether it is a thoroughfare:
|As referred to in the Act, Section 49(4).
|A thin protective layer (e.g. surface dressing) applied to the surface to restore skid resistance and/or to seal it. This does not include high amenity or high duty surfaces, or surfaces with an aesthetic requirement.
|The New Roads and Street Works Act 1991 (NRSWA).
|The cut face that defines the outer edge of an excavation at the surface.
|The area between the trim-line and a fixed feature and the edge of an excavation.
|United Kingdom Accreditation Service.
|A person with a statutory right to execute street works or the holder of a street works licence.
|The area of the highway outside the carriageway (and footway if present). A verge may be slightly raised but is exclusive of embankment or cutting slopes and is generally grassed.
|A test to determine the resistance to deformation (rutting) of, primarily, surface courses.