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1 Code of Practice Third Edition ( england ) April 2010 new roads and street works act 1991 Specification for the Reinstatement of Openings in Highways new roads and street works act 1991 Specification for the Reinstatement of Openings in Highways Third Edition Code of Practice for england Approved by the Secretary of State under Section 71 of the new roads and street works act 1991 April 2010 PublishedbyTSO(TheStationeryOffice)and availablefrom: Online Mail, Telephone,Fax&E mail TSO POBox29,Norwich,NR3 1GN Telephone orders/Generalenquiries: 0870600 5522 Fax orders:0870600 5533 E Textphone0870240 3701 TSO@Blackwelland otherAccreditedAgents Customers can also orderpublicationsfrom: TSO Ireland 16 ArthurStreet,BelfastBT14GD 028 90238451 Fax 028 90235401 DepartmentforTransport Great Minster House 76 MarshamStreet LondonSW1P4DR Telephone03003303000 Web site Crown copyright2010, except where otherwise stated.

2 Copyrightin the typographicalarrangement rests withtheCrown. Thispublication, excludinglogos, may be reproducedfree ofchargein any format or mediumfor non commercial research, private study orforinternal circulation within an organisation. Thisis subjecttoitbeing reproduced accurately and not usedin a misleading copyright source ofthe material mustbe acknowledged and the title ofthepublication specified. For any Re use ofthetextinthisbook,apply for a Value Added Click UseLicence at , e ISBN9780115531415 Printed inGreat Britain on material containing75% post consumer waste and 25% ECF pulp. I P002353372 C10 03/10 OnlinePublishedbyTSO(TheStationeryOffice ) , Telephone,Fax&E mailTSOPOBox29,Norwich,NR3 1 GNTelephone orders/Generalenquiries:0870600 5522 Faxorders:0870600 5533E 3701 TSO@BlackwellandotherAccreditedAgentsCus tomerscanalsoorderpublicationsfrom:TSO Ireland 16 ArthurStreet,BelfastBT14GD028 90238451 Fax 028 90235401 DepartmentforTransportGreat Minster House76 MarshamStreetLondonSW1P4 DRTelephone03003303000 Web Crown copyright2010, ,excludinglogos,may bereproducedfreeofchargeinany formatormediumfornon commercialresearch, private studyorforinternalcirculationwithinanorg anisation.

3 Thisissubjecttoitbeing reproducedaccurately and notusedina copyright sourceofthematerialmustbeacknowledged and any Re use ofthetextinthisbook,apply fora Value Added Click UseLicence ,e inGreat Britain onmaterialcontaining75% post consumerwaste and 25% ECF P002353372C1003/10 Contents Foreword 8 Definitions 10 S0 Preamble to the Specification 14 General 14 Outline of the Specification 14 Outline of the Appendices 15 Outline of the Notes For Guidance 15 Using the Specification and Appendices to Undertake the 15 Correct Reinstatement S1 Operational Principles 17 General 17 Guarantee Period 18 road Categories 18 Footway, Footpath and Cycle Track Categories 19 Excavation and Trench Categories 19 Alternative Options 20 Immediate Works 20 Apparatus within road .

4 Footway and Cycletrack Structures 20 Geosynthetic Materials, Geotextiles and Reinforcement Grids 21 Trees 21 Conciliation and Arbitration 22 S2 Performance Requirements 23 General 23 Surface Profile 25 Fixed Features 28 Surface Regularity 31 Structural Integrity 32 Skid Resistance 34 Sampling and Testing 39 3 S3 Excavation 40 Breaking the Surface 40 Excavation 40 Excavated Material 41 Side Support 41 Drainage 41 Shallow or Aborted Excavations 41 Trenchless Pipelaying 42 S4 Surround to Apparatus 43 General 43 S5 Backfill 44 Backfill Material Classification 44 Alternative Reinstatement Materials 45 Additional Requirements 45 S6 Flexible and Composite Roads 47 Reinstatement Methods 47 Sub-base Reinstatement 48 Base Reinstatement 49

5 Surface Reinstatement 50 Base and Edge Preparation 55 Tolerances 59 S7 Rigid and Modular Roads 60 Reinstatement Methods 60 Sub-base Reinstatement 61 Concrete road Slab Reinstatement 62 Edge Support and Preparation 63 Reinforcement 64 Overlays 65 Modular Roads 65 Tolerances 66 S8 Footways, Footpaths and Cycle Tracks 67 Reinstatement Methods 67 Sub-base and Binder Course Reinstatement 68 Surface Reinstatement 69 Vehicular Trafficking 73 Tolerances 73 S9 Verges and Unmade Ground 74 General 74 Adjacent road Structures 74 Cultivated Areas 75 Grassed Areas 75 Verges, Ditches and Drainage Courses 75 S10 Compaction Requirements 76 Introduction 76 Compaction of Materials 76 Equipment Operation and Restrictions 78 4 Contents S11 Ancillary Activities 81 Traffic signs, road markings, studs and verge markers 81 Street Furniture and Special Features 83 Traffic Sensors, etc.

6 83 Water-related Matters 83 Ironwork and Apparatus 84 Test Holes 86 Overbanding 87 S12 Remedial Works 88 General 88 Safety Requirements 88 Repair of Cracking 88 Repair of Settlement beyond Reinstatement Limits 90 Repair of Other Significant Defects 90 Appendices 91 A1 Backfill Materials 91 Class A Graded Granular Materials 91 Class B Granular Materials 91 Class C Cohesive / Granular Materials 91 Class D Cohesive Materials 92 Class E Unacceptable Materials 92 Field Identification Tests 93 A2 Key To Materials 96 Introduction 96 Hot Rolled Asphalt (HRA) Mixtures 97 Stone Mastic Asphalt (SMA) Mixtures 98 Asphalt Concrete Mixtures 100 Cold-lay Surfacing Materials 101 Structural Layer Thickness Tolerances 102 Compacted Lift Thickness 103 Bituminous Laying Temperatures 104 Identification of Structural Layers 105 Key to Materials 108 Key to Reinstatement Methods 109 Summarised Selection Process for Hot Lay Flexible Materials 111 A3 Reinstatement Flexible Roads 118 Type 0 Flexible Roads 118 Type 1 Flexible Roads 119 Type 2 Flexible Roads 120 Type 3 Flexible Roads 121 Type 4 Flexible Roads 122 Sub-base Construction Flexible Roads 123 A4 Reinstatement Composite Roads 124 Type 0 Composite Roads 124 Type 1 Composite Roads 125 Type 2 Composite Roads 126 Types 3 & 4 Composite Roads 127 5 Sub-base Construction

7 Types 0, 1 & 2 Composite Roads 128 Sub-base Construction Types 3 & 4 Composite Roads 129 A5 Reinstatement Rigid Roads 130 Type 0 Rigid Roads 130 Type 1 Rigid Roads 131 Types 2, 3 & 4 Rigid Roads 132 A6 Reinstatement Modular Roads 133 Types 3 & 4 Modular Roads Bituminous Base 133 Types 3 & 4 Modular Roads Composite Base 134 Types 3 & 4 Modular Roads Granular Base 135 A7 Reinstatement Footways, Footpaths and Cycle Tracks 136 Flexible Footways, Footpaths and Cycle Tracks 136 Rigid Footways, Footpaths and Cycle Tracks 137 Modular Footways, Footpaths and Cycle Tracks 138 A8 Compaction Requirements 139 Granular, Cohesive and Cement Bound Materials 139 Chalk Materials 140 Bituminous Mixtures 142 A9 Alternative Reinstatement Materials (ARMs) 143 Introduction 143 General Requirements for ARMs 145 Structural Materials for Reinstatements (SMRs) 146 Stabilised Materials for Fill (SMFs)

8 150 Outline Scheme for Approved Trials 152 A11 Bitumen Binder Equivalence 158 Introduction 158 Base and Binder Course Materials 158 A12 Reinstatement of Modular Surface Layer 160 Interim Reinstatement 160 Permanent Reinstatement 160 Provision of Replacement Modules 163 Pre-Existing Surface Damage Outside Limits 163 of Undertaker s Works Joint Inspections and Recovery of Costs 164 Notes for Guidance 166 NG1 Introduction 167 General 167 Guarantee Period 167 road Categories 168 Alternative Options 171 Immediate Works 172 Apparatus within the road Structure 172 Geosynthetic Materials, Geotextiles and Reinforcement Grids 172 Trees 172 6 Contents NG2 Performance Requirements 175 Surface Profile 175 Fixed Features 177 Surface Regularity 177 Structural Integrity 177 Skid Resistance 178 NG3 Excavation 179 Breaking the Surface 179 Excavation 179 Side Support 179 NG4 Surround to Apparatus 180 General 180 NG5 Backfill 181 Backfill Material Classification 181 Additional Requirements 181 NG6 Flexible and Composite Roads 183 Sub-base Reinstatement 183 Base Reinstatement 183 Surface Reinstatement 184 Base and Edge Preparation 185 NG7 Rigid and Modular Roads 190 Reinstatement Methods 190 Modular Roads 190 NG8 Footways.

9 Footpaths and Cycle Tracks 191 Sub-base and Binder Course Reinstatement 191 Surface Reinstatment 191 NG10 Compaction Requirements 194 Introduction 194 Reinstatement Materials 194 Equipment Operation and Restrictions 195 NG11 Ancillary Activities 199 Traffic Signs, road Markings, Studs and Verge Markers 199 Street Furniture and Special Features 199 Traffic Sensors etc. 199 Water-related Matters 199 Ironwork and Apparatus 200 Overbanding 200 NGA2 Key to Materials 203 NGA8 Compaction Requirements 207 NGA9 Alternative Reinstatement Materials (ARMs) 209 NGA12 Reinstatement of Modular Surface Layers 211 Index 218 7 Foreword Under section 71 of the new roads and street works act 1991 (NRSWA) an Undertaker executing street works must when reinstating the street comply with whatever specification may be prescribed for materials to be used and standards of workmanship to be observed.

10 The Undertaker must also ensure that the reinstatement conforms to prescribed performance standards in the case of an interim reinstatement, until a permanent reinstatement is effected, and, in the case of a permanent reinstatement, for the prescribed period after completion of the reinstatement. The Secretary of State for Transport has approved this Code under powers to issue codes of practice under section 71 of the NRSWA. The Code incorporates the requirements set out in the following regulations: The Street Works (Reinstatement) Regulations 1992, SI 1992 ; The Street Works (Reinstatement) (Amendment) Regulations 1992, SI 1992 No. 3110; and The Street Works (Reinstatement) (Amendment) ( england ) Regulations 2002, SI 2002 No. 1487. Street works have been a devolved matter in Scotland and Wales since the promulgation of constitutional changes with effect from 1999.