New Roads and Street Works Act 1991 Spec for Reinstatement of Openings in Roads 3rd Edition (Scotland)

Approved by the Scottish Ministers under Section 130 of the New Roads and Street Works Act 1991

ISBN 978-1-908181-44-2

This document is also available in pdf format (2.8mb)
The respondent information form and consultation questionnaire are available in MS Word format (164k)




S0 Preamble to the Specification
S0.1 General
S0.2 Outline of the Specification
S0.3 Outline of the Appendices
S0.4 Outline of the Notes for Guidance
S0.5 Using the Specification and Appendices to Undertake the Correct Reinstatement

S1 Operational Principles
S1.1 General
S1.2 Guarantee Period
S1.3 Road Categories
S1.4 Footway, Footpath and Cycle Track Categories
S1.5 Excavation and Trench Categories
S1.6 Alternative Options
S1.7 Immediate Works
S1.8 Apparatus within Road, Footway and Cycletrack Structures
S1.9 Geosynthetic Materials, Geotextiles and Reinforcement Grids
S1.10 Trees
S1.11 Conciliation and Arbitration

S2 Performance Requirements
S2.1 General
S2.2 Surface Profile
S2.3 Fixed Features
S2.4 Surface Regularity
S2.5 Settlement
S2.6 Skid Resistance
S2.7 Sampling and Testing

S3 Excavation
S3.1 Breaking the Surface
S3.2 Excavation
S3.3 Excavated Material
S3.4 Side Support
S3.5 Drainage
S3.6 Shallow or Aborted Excavations
S3.7 Trenchless Pipelaying

S4 Surround to Apparatus
S4.1 General

S5 Backfill
S5.1 Backfill Material Classification
S5.2 Alternative Reinstatement Materials
S5.3 Additional Requirements

S6 Flexible and Composite Roads
S6.1 Reinstatement Methods
S6.2 Sub-base Reinstatement
S6.3 Base Reinstatement
S6.4 Surface Reinstatement
S6.5 Base and Edge Preparation
S6.6 Tolerances

S7 Rigid and Modular Roads
S7.1 Reinstatement Methods
S7.2 Sub-base Reinstatement
S7.3 Concrete Road Slab Reinstatement
S7.4 Edge Support and Preparation
S7.5 Reinforcement
S7.6 Overlays
S7.7 Modular Roads
S7.8 Tolerances

S8 Footways, Footpaths and Cycle Tracks
S8.1 Reinstatement Methods
S8.2 Sub-base and Binder Course Reinstatement
S8.3 Surface Reinstatement
S8.4 Vehicular Trafficking
S8.5 Tolerances

S9 Verges and Unmade Ground
S9.1 General
S9.2 Adjacent Road Structures
S9.3 Cultivated Areas
S9.4 Grassed Areas
S9.5 Verges, Ditches and Drainage Courses

S10 Compaction Requirements
S10.1 Introduction
S10.2 Compaction of Materials
S10.3 Equipment Operation and Restrictions

S11 Ancillary Activities
S11.1 Traffic signs, road markings, studs and verge markers
S11.2 Street Furniture and Special Features
S11.3 Traffic Sensors, etc.
S11.4 Water-related Matters
S11.5 Ironwork and Apparatus
S11.6 Test Holes
S11.7 Overbanding

S12 Remedial Works
S12.1 General
S12.2 Safety Requirements
S12.3 Repair of Cracking
S12.4 Repair of Settlement beyond Reinstatement Limits
S12.5 Repair of Other Significant Defects


A1 Backfill Materials
A1.1 Class A - Graded Granular Materials
A1.2 Class B - Granular Materials
A1.3 Class C - Cohesive / Granular Materials
A1.4 Class D - Cohesive Materials
A1.5 Class E - Unacceptable Materials
A1.6 Field Identification Tests

A2 Key To Materials
A2.0 Introduction
A2.1 Hot Rolled Asphalt (HRA) Mixtures
A2.2 Stone Mastic Asphalt (SMA) Mixtures
A2.3 Asphalt Concrete Mixtures
A2.4 Cold-lay Surfacing Materials
A2.5 Structural Layer Thickness Tolerances
A2.6 Compacted Lift Thickness
A2.7 Bituminous Laying Temperatures
A2.8 Identification of Structural Layers
A2.9 Key to Materials
A2.10 Key to Reinstatement Methods
A2.11 Summarised Selection Process for Hot Lay Flexible Materials

A3 Reinstatement - Flexible Roads
A3.0 Type 0 Flexible Roads
A3.1 Type 1 Flexible Roads
A3.2 Type 2 Flexible Roads
A3.3 Type 3 Flexible Roads
A3.4 Type 4 Flexible Roads
A3.5 Sub-base Construction - Flexible Roads

A4 Reinstatement - Composite Roads
A4.0 Type 0 Composite Roads
A4.1 Type 1 Composite Roads
A4.2 Type 2 Composite Roads
A4.3 Types 3 & 4 Composite Roads
A4.4 Sub-base Construction - Types 0, 1 & 2 Composite Roads
A4.5 Sub-base Construction - Types 3 & 4 Composite Roads

A5 Reinstatement - Rigid Roads
A5.0 Type 0 Rigid Roads
A5.1 Type 1 Rigid Roads
A5.2 Types 2, 3 & 4 Rigid Roads

A6 Reinstatement - Modular Roads
A6.1 Types 3 & 4 Modular Roads - Bituminous Base
A6.2 Types 3 & 4 Modular Roads - Composite Base
A6.3 Types 3 & 4 Modular Roads - Granular Base

A7 Reinstatement - Footways, Footpaths and Cycle Tracks
A7.1 Flexible Footways, Footpaths and Cycle Tracks
A7.2 Rigid Footways, Footpaths and Cycle Tracks
A7.3 Modular Footways, Footpaths and Cycle Tracks

A8 Compaction Requirements
A8.1 Granular, Cohesive and Cement Bound Materials
A8.2 Chalk Materials
A8.3 Bituminous Mixtures

A9 Alternative Reinstatement Materials (ARMs)
A9.1 Introduction
A9.2 General Requirements for ARMs
A9.3 Structural Materials for Reinstatements (SMRs)
A9.4 Outline Scheme for Approval Trials
A9.5 Recording of Approval Trials and Local Agreements

Not used

A11 Bitumen Binder Equivalence
A11.1 Introduction
A11.2 Base and Binder Course Materials

A12 Reinstatement of Modular Surface Layer
A12.1 Interim Reinstatement
A12.2 Permanent Reinstatement
A12.3 Provision of Replacement Modules
A12.4 Pre-Existing Surface Damage outside limits of Undertaker's Works

Notes for Guidance

NG0 Preamble to the Specification

NG1 Introduction
NG1.1 General
NG1.2 Guarantee Period
NG1.3 Road Categories
NG1.6 Alternative Options
NG1.7 Immediate Works
NG1.8 Apparatus within the Road Structure
NG1.9 Geosynthetic Materials, Geotextiles and Reinforcement Grids
NG1.10 Trees

NG2 Performance Requirements
NG2.2 Surface Profile
NG2.3 Fixed Features
NG2.4 Surface Regularity
NG2.5 Structural Integrity
NG2.6 Skid Resistance

NG3 Excavation
NG3.1 Breaking the Surface
NG3.2 Excavation
NG3.4 Side Support

NG4 Surround to Apparatus
NG4.1 General

NG5 Backfill
NG5.1 Backfill Material Classification
NG5.3 Additional Requirements

NG6 Flexible and Composite Roads
NG6.2 Sub-base Reinstatement
NG6.3 Base Reinstatement
NG6.4 Surface Reinstatement
NG6.5 Base and Edge Preparation

NG7 Rigid and Modular Roads
NG7.1 Reinstatement Methods
NG7.7 Modular Roads

NG8 Footways, Footpaths and Cycle Tracks
NG8.2 Sub-base and Binder Course Reinstatement
NG8.3 Surface Reinstatement

NG9 Verges and Unmade Ground

NG10 Compaction Requirements
NG10.1 Introduction
NG10.2 Compaction of Materials
NG10.3 Equipment Operation and Restrictions

NG11 Ancillary Activities
NG11.1 Traffic Signs, Road Markings, Studs and Verge Markers
NG11.2 Street Furniture and Special Features
NG11.3 Traffic Sensors etc.
NG11.4 Water-related Matters
NG11.5 Ironwork and Apparatus
NG11.7 Overbanding

NG12 Remedial Works

NGA1 Backfill Materials
There are no Notes for Guidance for this Appendix

NGA2 Key to Materials

There are no Notes for Guidance

NGA8 Compaction Requirements

NGA9 Alternative Reinstatement Materials (ARMs)

There are no Notes for Guidance

NGA12 Reinstatement of Modular Surface Layers

Published Date 13 Jul 2012 Type Mode of transport