DESIGN MANUAL FOR ROADS AND BRIDGES - …

1 August 1999 DESIGN MANUAL FOR ROADS AND BRIDGESVOLUME 2 HIGHWAY STRUCTURESDESIGN (SUB-STRUCTURES ANDSPECIAL STRUCTURES)MATERIALSSECTION 2 SPECIAL STRUCTURESPA RT 9BD 78/99 DESIGN OF road TUNNELSSUMMARYThis Standard describes the procedures required for thedesign of new or refurbished road tunnels located withinMotorways and Other Trunk ROADS . It gives guidanceon the necessary equipment and Operational andMaintenance Systems that need to be considered by thedesigner to facilitate continued effective and FOR USEThis is a new document to be inserted into the Part 9 into Volume 2, Section this sheet as : A quarterly index with a full set of VolumeContents Pages is available separately from TheStationery Office COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLED BD 78/99 DESIGN of road TunnelsSummary.

2 This Standard describes the procedures required for the DESIGN of new orrefurbished road tunnels located within Motorways and Other Trunk gives guidance on the necessary equipment and Operational andMaintenance Systems that need to be considered by the designer tofacilitate continued effective and safe HIGHWAYS AGENCYTHE SCOTTISH EXEUCTIVE DEVELOPMENTDEPARTMENTTHE NATIONAL ASSEMBLY FOR WALESCYNULLIAD CENEDLAETHOL CYMRUDEPARTMENT OF THE ENVIRONMENT FORNORTHERN IRELANDDESIGN MANUAL FOR ROADS AND BRIDGESELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDV olume 2 Section 2 Part 9 BD 78/99 August 1999 REGISTRATION OF AMENDMENTSA mendPage NoSignature & Date ofAmendPage NoSignature & Date ofNoincorporation ofNoincorporation ofamendmentsamendmentsRegistration of AmendmentsELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDV olume 2 Section 2 Part 9 BD 78/99 August 1999 REGISTRATION OF AMENDMENTSA mendPage NoSignature & Date ofAmendPage NoSignature & Date ofNoincorporation ofNoincorporation ofamendmentsamendmentsRegistration of AmendmentsELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDVOLUME 2 HIGHWAY STRUCTURESDESIGN (SUB-STRUCTURES ANDSPECIAL STRUCTURES)

3 MATERIALSSECTION 2 SPECIAL STRUCTURESPA RT 9BD 78/99 DESIGN OF road , Safety, General DESIGN Classification of Safety Facilities forthe road Safety Control, Communications andInformation Monitoring and Power Supply and Buildings and Plant Commissioning, Handover andOperational Operation and and MANUAL FOR ROADS AND BRIDGESA ugust 1999 ELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDA ppendicesASecondary CladdingBDurability and MaterialsCTunnel Documentation: Typical ContentsDGuidelines for Major Incident Operations andFire TestsERecent Research by the Highways AgencyFTunnel DESIGN and Safety Consultation Group(TDSCG) RequirementsGLife Expectancy of Tunnel EquipmentDESIGN MANUAL FOR ROADS AND BRIDGESA ugust 1999 ELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDV olume 2 Section 2 Part 9 BD 78/99 August 19991/1 Chapter 1 Introduction1.

4 Document provides the requirements andessential guidance for decision making relevant to theeffective planning, DESIGN , operation and majorrefurbishment of road tunnels in the United Kingdom. Itcombines a Directive type Standard with an AdviceNote. The document is intended for a wider readershipthan tunnel designers alone. Throughout, emphasis isplaced on the wider aspects of DESIGN as they apply tothe essential aspects of operation and maintenance ofsuch relatively expensive structures over theiroperational lives. For Trans-European Motorways aseparate United Nations document Standards andRecommended Practice: Tunnels, July 1992, applies tosupport the European Agreement on Main InternationalTraffic Arteries (AGR). road tunnel is a subsurface highway structureenclosed for a length of 150m, or more.

5 The operationalequipment requirements described in this Standard forsuch structures vary with length, location, speed andtraffic volume. Where security considerations permit, theuse of central light wells may provide economies but thetunnel length shall not be considered to be reduced inany way for classification of the document will be of particularinterest to parties such as the traffic police, fire andambulance services, maintaining and environmentalauthorities as well as those involved with the severalspecialisms of engineering needed to contribute to aneffective and efficient road tunnel is placed on the early and detailedconsideration that must be given, by the relevant partiesinvolved, to the particular aspects of safety peculiar tothe construction and operation of road tunnels and theoverall cooperation, interaction and teamwork thatsuccessful tunnel DESIGN and operation entails.

6 Chaptershave been written to be as self contained as possible witha minimum of cross should be understood that for such a wide anddeveloping topic, the guidance provided herein shouldnot be considered as to be exhaustive. It is not intendedto provide any form of substitute for the specialexpertise that is needed to prepare effective and efficientworking designs for a road of document provides information on thegeneral considerations and specific DESIGN andoperational requirements of road tunnels, together withdetails of the tunnel maintenance, and operationaldocumentation that is involved. A separate document toadvise further on the specific requirements of roadtunnel maintenance is currently under aspects of tunnel DESIGN , construction,equipping and operation are currently undergoing rapiddevelopment and improvement.

7 This document haspurposely kept to describing the essential principles ofgood practice rather than to be unnecessarilyprescriptive. Reference is made to a selection of thecurrent publications and research documents whichcould be of assistance to designers and of the detailed technical specificationrequirements for road tunnel equipment may be found inthe MANUAL of Contract Documents for Highway Works:Volume 5: Section 7: Mechanical and ElectricalInstallations in road Tunnels, Movable BRIDGES andBridge Access Gantries. A separate specificationdocument to advise on the specific civil engineeringrequirements of road tunnel construction andmaintenance is currently under to the wide variation in the engineeringconsiderations that influence the structure and form of atunnel, references to civil engineering aspects within thedocument are necessarily limited in scope.

8 Guidance isgiven on such common aspects as for example spacerequirements for traffic, equipment, profile for trafficsafety etc and the consideration to be given to fireprotection of the structure. Separate documents to adviseon such aspects as the New Austrian TunnellingMethod, Limited Facility ( low height, car only )Tunnels and the Observational Method are currentlyunder preparation. The Standard does not cover surfacetunnels, a subject currently being studied in severalcountries including the UK and by PIARC TunnelsCommittee, for environmental of the document which form part of themandatory requirements of the Overseeing Organisation( the client ) for road tunnels are contained withinELECTRONIC COPY NOT FOR USE OUTSIDE THE COPIES OF THIS ELECTRONIC DOCUMENT ARE UNCONTROLLEDV olume 2 Section 2 Part 9 BD 78/99 August 19991/2 Chapter 1 Introductionparagraphs in bold text.

9 These are the sections of thedocument with which the DESIGN Organisation ( thedesigner ) must comply, or will have agreed beforehanda suitable Departure from Standard with the relevantOverseeing Organisation, in accordance with BD2(DMRB ) of the DESIGN MANUAL for ROADS andBridges. Elsewhere in the document, where the word shall is used then the requirement is expected to becarried out in full unless, for the circumstances of aparticular scheme, a recorded agreement has been madewith the Overseeing Organisation beforehand that amore suitable way, of conforming with the intention of aparticular requirement, is to be used. The remainder ofthe document contains advice which is commended todesigners and operators for their consideration. Legalrequirements are non negotiable and are not describedwithin emboldened DESIGN and Safety Consultation Group(TDSCG) is necessary for various interested parties (seebelow) to meet together as a group in order to contributetheir specific specialist knowledge and experience toclarify requirements for tunnel construction orrefurbishment projects.

10 For effective DESIGN ,construction and operation of a road tunnel theagreement and setting of appropriate standards of safety,quality and economy depend heavily on early discussionbetween the parties concerned and on a clear definitionof the scope of work and performance and reliabilityrequirements. Such meetings shall be arranged to be asefficient and effective as possible with respect to stafftime and budget restraints of contributing order to confirm basic DESIGN and operatingprocedures in the context of fully integrated systemsfor traffic management, signs and signalling,communication, information, plant monitoring andcontrol a Tunnel DESIGN and Safety ConsultationGroup shall be set up. It shall comprise appropriatelevels of representation from the OverseeingOrganisation, DESIGN Organisation, Police or othercontrol authority, Maintaining Agent and EmergencyServices.