(AAV) Aggregate Abrasion Value | the standard measure of an aggregate's resistance to abrasion |
Authority | unless otherwise stated, in this Specification and Glossary, 'the Authority' refers to the Authority as defined in the Act |
BBA/HAPAS | a recognized body giving approval for products and processes |
CBR | Californian Bearing Ratio: a measure of the load bearing strength of a granular or unbound material |
composite construction | a structure where the base (roadbase) is composed of lean mix concrete or other cement bound granular material, normally with bituminous surfacing layers |
cycletrack | 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 |
deep openings | all excavations and trenches in which the depth of cover over the buried apparatus is greater than 1.5 metres. Trenches that fall intermittently below 1.5 metres depth of cover for lengths of less than 5 metres are deemed not to be deep openings |
emergency works | works whose execution at the time when they are executed is required in order to put an end to, or to prevent the occurrence of, circumstances then existing or imminent for which the person responsible for the works believes on reasonable grounds to be existing or imminent which are likely to cause danger to persons or property |
flexible construction | a structure where the base (roadbase) is composed of either bituminous material or granular material, or a combination thereof |
footpath | a way over which the public have a right of way on foot only, not being a footway |
footway | a way comprised in a highway, which also comprises a carriageway, being a way over which the public have a right of way on foot only |
geosynthetic materials | a generic term describing a product at least one of whose components is made from a synthetic or natural polymer, in the form of a sheet or a 3D structure, used in contact with soil and/or other materials in geotechnical and civil engineering applications |
immediate works | works comprising the orderly replacement of excavated material, reasonably compacted to finished surface level, usually with a cold-lay surfacing |
interim reinstatement | the orderly placement and proper compaction of reinstatement layers to finished surface level, including any temporary materials |
intervention | restoration of a reinstatement which does not comply with the performance standards, to a condition complying with those standards |
major projects | standard works which 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 |
msa | million standard axles |
minor works | works which are not emergency or urgent works, which are of a planned duration of not more than 3 days, do not form part of a rolling programme and are not planned to involve at any one time more than 30 metres of works or leave less than the minimum width of carriageway necessary for one-way traffic |
modular construction | a structure where the surface is composed of setts, concrete blocks, brick pavers or paving slabs etc. laid on appropriate sub-construction |
narrow trenches | all trenches of 300 mm surface width or less, with a surface area greater than 2 square metres |
pen | the penetration grade of a bituminous binder |
permanent reinstatement | the orderly placement and proper compaction of reinstatement layers up to and including the finished surface level |
PSV | Polished Stone Value |
road & footway structure | includes the surface course, binder course, base (roadbase) and sub-base |
rigid construction | a structure where the surface slab also performs the function of the base (roadbase); is of pavement quality concrete and may be reinforced. Under certain circumstances, as defined in Section S7, a rigid road that has been overlaid may be deemed to be a composite construction for the purpose of this Specification |
SHW | Specification for Highway Works, published as Volume 1 of the Manual of Contract Documents for Highway Works: HMSO |
small excavations | all openings with a surface area of 2 square metres or less. For the purposes of this Specification, test holes up to 150 mm diameter are not excavations and shall be reinstated in accordance with the requirements of Section S11 |
SRV | the skid resistance value of a road surface |
standard works | works which are not emergency works, urgent works or minor works. They include resurfacing works in excess of 20 square metres and cases where an Undertaker returns to site after interim reinstatement to complete permanent reinstatement in excess of 20 square metres |
street | the whole or any part of any of the following, irrespective of whether it is a thoroughfare:
a) any highway, road, lane, footway, alley or passage,
b) any square or court, and
c) any land laid out as a way whether it is for the time being formed as a way or not;
and for the avoidance of doubt includes land on the verge of a street or between two carriageways. Where a street passes over a bridge or through a tunnel, references to the street include that bridge or tunnel. (NRSWA Section 48 etc.) |
STV | the units of viscosity measured in seconds using the Standard Tar Viscometer |
the Act | unless otherwise stated in this Specification and Glossary, 'the Act' refers to the New Roads and Street Works Act 1991 |
traffic sign | has the same meaning as in the Road Traffic Regulation Act: 1984 |
TRL | Transport Research Laboratory |
UKAS | the organisation that has introduced a national scheme for the accreditation of Laboratories used for the testing of materials |
Undertaker | unless otherwise stated in this Specification and Glossary, 'the Undertaker' refers to the Undertaker as defined in the Act and is the person in whom a statutory right to execute works is vested or the holder of a street works licence |
urgent works | works which fall short of emergency works but are of sufficient urgency to warrant immediate action either to prevent further deterioration of an existing situation or to avoid an Undertaker becoming in breach of a statutory obligation |
verge | that part of the highway outside of the carriageway, which may be slightly raised but is exclusive of embankment or cutting slopes, and generally grassed |