Construction record field descriptions
15.3.1.1
The Fields contained in a type 62 Construction Record are explained in this Section.
15.3.1.2 Record Identifier - Mandatory Field
- The RECORD_IDENTIFIER identifies the Record Type. In the Construction Record the RECORD_IDENTIFIER = 62.
15.3.1.3 USRN - Mandatory Field
- USRN - Unique Street Reference Number.
15.3.1.4 Construction Type Sequence Number - Mandatory Field
- The CONSTRUCTION_TYPE_SEQ_NUM Field indicates that there can be more than one Construction Record present for any Street. It is therefore necessary to differentiate between them and this is achieved by ensuring a CONSTRUCTION_TYPE_SEQ_NUM is present in the NSG.
15.3.1.5 Construction Type - Mandatory Field
- CONSTRUCTION_TYPE differentiates between the 3 types of information that can be present in the ASD Update transfer file. For valid CONSTRUCTION_TYPE codes, see Table 17.
- As a minimum, CONSTRUCTION_TYPE = 1 – Street Reinstatement must be completed.
Code
CONSTRUCTION_TYPE
1
Street Reinstatement
2
Special Surface
3
Special Construction Needs
Table 17 - Construction Types
15.3.1.6 Aggregate Abrasion Value (AAV) - Optional Field
- The AGGREGATE_ABRASION_VALUE Field is the standard measure of an aggregate’s resistance to abrasion.
- For valid AAV codes linked to the REINSTATEMENT_TYPE_CODE, see Table 18.
AGGREGATE_ABRASION_VALUE:
REINSTATEMENT_TYPE_CODE
All Pre-Coated Chippings
SMA, Material to PD6691 Surface Courses
5
10
12
1
12
14
2
12
14
3
14
16
4
14
16
Table 18 - Aggregate Abrasion Value (AAV)
15.3.1.7 Polished Stone Value (PSV) - Optional Field
- The POLISHED_STONE_VALUE Field is as a measure of the resistance of an aggregate to polishing (smoothing).
- PSV is classified into two site categories, according to the apparent degree of risk associated with the site location; Site A) Potentially High Risk, Site B) Average or Low Risk. This is to simplify the determination of the PSV requirements for aggregates in asphalt surface courses.
- For valid PSV codes linked to the REINSTATEMENT_TYPE_CODE, see Table 19.
POLISHED_STONE_VALUE:
REINSTATEMENT_TYPE_CODE
Site A Potentially High Risk
Site B Average or Low Risk
5
68
68
1
68
65
2
65
60
3
65
55
4
65
55
Table 19 - Polished Stone Value (PSV)
15.3.1.8 Frost Heave Susceptibility - Optional Field
- Where FROST_HEAVE_SUSCEPTIBILITY = 1 – Yes is present in the NSG it indicates that the existing depth of non-frost susceptible materials is greater than 450 mm below the Street surface and the Highways Authority requires such a depth of non-frost susceptible material to be maintained.
15.3.1.9 Stepped Joint - Optional Field
- Where STEPPED_JOINT = 1 – Yes is present in the NSG it indicates if it is the custom and practice of a Highway Authority to cut-back the surface or binder course to provide a stepped profile. STEPPED_JOINT = 1 should only be present in the NSG if REINSTATEMENT_TYPE_CODE = 5 or 1 is also present in the NSG.
15.3.1.10 SWA_ORG_REF_CONSULTANT - Optional Field
- This Field should be present in the NSG with the LAID code of the Highway Authority which must be contacted for any queries about the reinstatement, special surface or special construction need.
15.3.1.11 DISTRICT_REF_CONSULTANT - Optional Field
- This Field should be present in the NSG with the Operational District reference of the Highway Authority which must be contacted for any queries about the reinstatement, special surface or special construction need.