uk specification highways series 0500

7/22/2019 UK Specification Highways Series 0500

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Volume1 Series500SpecificationforHighwayWorks DrainageandServiceDucts

dRaInagE and SERvIcE ductS

501 (05/01) Pipes for drie for Serieds

geerl

1 (11/06)WherethetermdrainisusedinthisSeriesit

shallbedeemedtoincludethetermssewerandpiped

culvert.

TheContractorshalldesignthepipedculvertslistedin

Appendix1/10inaccordancewiththerequirementsof

Clause106.

Series8000(MCHW5.8.2)appliestotheinstallationby

trenchlesstechniquesofhighwaydrainage,service

ducts,sleevesandculvertswithinternaldiametersuptoandincluding900mmnominalinternaldiameteror

width.

2 (11/04)Alldrainsconstructedofpipesaswellas

pipedculvertsuptoandincluding900mminternaldiametershallcomplywiththisSeriesandany

additionalrequirementsinAppendix5/1.Drains

constructedusingpipesexceeding900mminternaldiameteraswellasboxandpipedculvertsshallcomply

withSeries2500.UnlessotherwisedescribedinAppendix5/1onlyonetypeofpipeshallbeusedwithinanyindividualdrainorserviceductbetween

consecutivechambers.TheContractorshallensurethat

plasticspipesarenotsubjecttodeteriorationduetosunlightduringtheperiodbetweenmanufactureand

installationintheground.

Pipes for drie

3 Pipesfordrainageshallbeselectedfromthe

alternativesinTable5/1andshallcomplywiththe

standardsandparticularrequirementstherein.TheContractorshallshowthatthepipesheselectshave

hydraulicflowcapacityequaltothatadoptedinthe

hydraulicdesignofthesystemasdescribedinAppendix5/1.Pipesandfittingsotherthanthose

includedinTable5/1shallbepermittedprovidedthat

theyholdacurrentBritishBoardofAgrmentRoadsandBridgesCertificate(orequivalent)statingthatthey

areasuitablealternativefortheusagespecifiedin

Table5/1.Oncompletionofthewholeofthedrainageworks,theContractorshallprovidetheOverseeing

Organisationwithascheduleshowingdetailsofallpipe

typesused,includingquality,jointsandnameofmanufacturer.

corre Seel Pipes

4 Corrugatedsteelpipesshallbemanufacturedfromeither:

(i) boltedsegmentalplatepipescomplyingwith

sub-Clause6ofthisClauseandhavingplatethicknessesasdescribedinAppendix5/1;or

(ii) (05/06)galvanizedsteelsheetsuitableforlock

seamfabricationcomplyingwithBSEN10327gradeDX51D+Z600,or

aluminiumcoatedsteelsheetcomplyingwith

AASHTOspecificationM274-87(2004).

Corrugatedsteelpipescomplyingwith(ii)aboveshall

bemanufacturedfromsteelofminimumthickness

1.25mmunlessotherwisedescribedinAppendix5/1.

5 (11/03)WheredescribedinAppendix5/1corrugatedsteelpipesshallbeprovidedwithadditionalprotection

ofhotappliedbitumencomplyingwithAASHTO

specificationM190-95(2000),oranequivalentcoatingsystem.

6 Boltedsegmentalplatepipesshallmeetthe

followi1ngrequirements:

(i) (11/03)Steelfortheplatesshallcomplywith

BS1449:Part1.1,Grade3orGrade4,

ConditionHR.

(ii) Afterforming,thedepthofthecorrugations

shallbewithinatoleranceof6%andthe

pitchofthecorrugationswithinatoleranceof4%ofthenominaldimensions.Plates

shallhaveaminimumlipof45mmbeyond

eachendcrest.Cutedgesshallbefreefromnotches,gouges,rustorburrs.

(iii) (11/06)Boltsandnutsforconnectingplates

shallcomplywithBSENISO4014,

BSEN4017andBSENISO4032,forBSENISO898-1andBSEN20898-2,

ISO898-2propertyclass8.8,nominalsize

M20;orwithBS4395:Part2,nominalsizeM20;orwithBSENISO898-1and

BSEN20898-2,ISO898-2propertyclass

10.9.

(iv) Whenalltheplateshavebeenassembled,the

nutsshallbetightenedagainstadomed

washer.Thetighteningshallberepeatedifnecessarytoachievethetorque

recommendedbythemanufacturer.

Amendment-November2006 2


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(v) Steelplateshallbegalvanizedincompliance

withClause1909.Platesshallbegalvanized

afterformingthecorrugationsandcompletingallnecessarycutting,punching

anddrilling.Unitsinwhichthezinccoatinghasbeenburnedbyweldingorotherwisedamagedinfabrication,transportorhandling

atSiteshallbemadegoodincompliance

withClauses1907and1908.Boltsandnutsshallbegalvanizedincompliancewith

Clause1909.

Amendment-May2006 3

taBLE 5/1:(05/05)Pipes for drie

Meril use Sr Prilr Reqiremes

Vitrifiedclay Fouldrains BS65orBSEN295

NormalpipesasdefinedinBS65

Surfacewaterdrains BS65or

BSEN295

Normalorsurfacewaterpipesas

definedinBS65

Filterdrains BS65

BSEN295

Unperforated,notexceeding2.0minlength

withspigotandsocketopenjoints

OR

Perforatedwithflexiblemechanicaljoints

Concrete(WithPortlandcement

orsulfate-resistingcementwhen

requiredinAppendix5/1.

Supersulfatedcementshallnot

beused)

Foul&surfacewaterdrains

notexceeding900mm

internaldiameter

BS5911-1and

BSEN1916(Ordinary

reinforcedor

unreinforced)

BS5911-5

Surfacewaterdrainsnot

exceeding900mminternal

diameter

BS5911-110 Forusewithjointscomplyingwith

sub-Clause504.4

Filterdrains BS5911-114(Porous

withogeeorrebated

joints)

BS5911-110 Unperforatednotexceeding2minlength

withopenjointsorcastellatedrebatedjoints

withthetotalslotareabetweencastellations

beingatleast1000mmpermetrelengthof

pipeOR

Perforatedwithcircularholesnotgreater

than10mmnorlessthan3mmindiameter

Glassreinforcedplastics(GRP) Foul&surfacewaterdrains BS5480 ClasstobeasspecifiedinAppendix5/1

Iron Foul&surfacewaterdrains BS437(Castiron)

BSEN598(Ductile

iron)


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taBLE 5/1: (11/06) Pipes for drie (oie)

Meril use Sr Prilr Reqiremes

Thermoplasticssolidwallpipes

andfittingsnotexceeding

900mmdiameter

Unplasticisedpolyvinyl-chloride

(PVC-U)

Polypropylene(PP)

Polyethylene(PE)

Foul&surfacewater

drains

BS4660orBS5481

orBSEN1401

(PVC-U)

BSEN1852-1(PP)

BSEN12666-1(PE)

SeetheUKnationalforwardtotherelevantBS

EN.Thegradeappropriateforusewithout

structuralcalculationsshallbeusedi.e.SN8for

PP&PEandSN4(SDR41)forPVC-U

Filterdrains BS4660or

BS5481or

BSEN1401(PVC-U)

BSEN1852-1(PP)

BSEN12666-1(PE)

Perforatedwithnotlessthan1000mmofholes

permetrelengthofpipe.Theperforationsshall

notreducethepipestiffnessbymorethan5%.

Circularperforationsnotgreaterthan10mmnor

lessthan3mmindiameterorrectangularslots

notgreaterthan4mmnorlessthan0.6mmin

width

Thermoplasticsstructuredwallpipeandfittingsnotexceeding

900mmdiameter

Surfacewaterdrains Clause518 Unperforatedwithwatertightjointsandwithapipestiffnessclass,creepratioandimpact

resistanceasdescribedin

Appendix5/1

Filterdrains Clause518 Perforatedwithnotlessthan1000mm2ofholes

permetrelengthofpipe.Theperforationsshall

notreducethepiperingstiffnessbymorethan

5%.Circularperforationsnotgreaterthan10

mmnorlessthan3mmindiameteror

rectangularslotsnotgreaterthan4mmnorless

than0.6mminwidth

Subsoilfielddrains BS4962or

Clause518

Corrugatedsteel Surfacewaterdrains,filter

drainsnotexceeding

900mminternaldiameter

AASHTO

specification

M36M-01exceptas

otherwiserequiredin

sub-Clauses501.4,

5and6

Alldrainsexceeding900mminternaldiametershallcomplywithSeries2500.

Pipes for Serie ds


7 (11/09)Pipesforserviceducts,excludingthosein

useinmotorwaycommunicationsinstallations,shallbeselectedfromthealternativesinTable5/2andshallcomplywiththestandardsandparticularrequirements

therein.Pipesforuseinmotorwaycommunications

installationsshallcomplywithSeries1500.Pipesforotherserviceductsinstalledusingtrenchlessmethods

shallconformtoSeries8000(MCHW5.8.2).Pipesfor

serviceductsshallhaveasmoothinternalborewithoutanysharpedgestotheendsofpipes.Theyshallcomply

withanyadditionalrequirementsdescribedin

Appendix5/2,andbeof100mminternaldiameterunlessotherwisedescribedtherein.Theiralignment

shallbetestedinaccordancewithsub-Clause509.9.TheuseofpipesandfittingsotherthanthoseincludedinTable5/2shallbepermittedprovidedthattheyholda

currentBritishBoardofAgrmentRoadsandBridges

Certificate(orequivalent)statingthattheyareasuitablealternativetothoselistedinTable5/2.

8 Eachductshallbefittedwithapigmented,stranded

polypropyleneorequivalentrot-proofmaterialdrawropeof5kNbreakingloadandhavingadesignlifeof

notlessthan20years,theendsofwhichshallbeeither

madefasttomarkerblocksasshownonHCDDrawingNumberI1orsecuredinsidechambers.Theendsofa

ductshallbeeithersealedbyremovablestoppers

immediatelyithasbeenlaid,orterminatedinchambersofthetypespecifiedinAppendix5/2.


5/29

Volume 1Specification for Highway Works

Series 500

Drainage and Service Ducts

5

TABLE 5/2: (11/06) Pipes for Ducts

Material Standard Particular Requirements

Vitrified clay BS 65 or Plain-ended, self-aligning flexible sleeve jointed with internal ends

BS EN 295 radiused to 3 mm minimum

Iron BS EN 598

(Ductile iron)

Glass reinforced plastics BS 5480 Class to be as specified in Appendix 5/2

Thermoplastics solid wall BS 4660 or When pipes BS 3506 (Class C) are used, joints shall comply with

BS 5481 or BS EN 1452-1 to 5 as appropriate

Unplasticised polyvinyl-chloride BS 3506 (Class C) or

(PVC-U) BS EN 1401,

BS EN 1452-1 to 5 as

appropriate class PN10.

Polypropylene (PP) BS EN 1852-1 (PP)

Polyethylene (PE) BS EN 12666-1 (PE)

Thermoplastics single wall BS EN 50086-2-4 Ducts to BS EN 50086-2-4 shall be classified as normal duty,

corrugated have a degree of protection against ingress of foreign objects

(Restricted to ducts buried a classification rating of 3 or 4 and a degree of protection against

minimum of 600 mm below the ingress of water classification rating of 7. Appendix 5/2 shall state

surface) the resistance to bending requirements.

Thermoplastics structured wall BS EN 50086-2-4 and Ducts to BS EN 50086-2-4 shall be classified as normal duty,

Clause 518 have a degree of protection against ingress of foreign objects

classification rating of 3 or 4 and a degree of protection against

ingress of water classification rating of 7. Appendix 5/2 shall state

the resistance to bending requirements.

Pipes for use in motorway communications installations shall comply with Series 1500

502 Excavation for Pipes and Chambers

1 Excavation shall comply with Clause 602 and with

the following:

(i) (05/04)soft spots existing below the bottomof an excavation shall be removed and the

resulting voids backfilled with Type 1

unbound mixture for subbase complyingwith Clause 803 or pipe bedding material

complying with Clause 503, both well

compacted, or ST1 concrete in compliance toClause 2602;

(ii) any additional excavation below the bottom

of an excavation that is required because the

Contractor has allowed the bottom tobecome soft or otherwise unacceptable for

the construction of the pipeline or chambersshall be made good as described in

sub-Clause 1(i) of this Clause;

(iii) any excavation greater than the net volume

required for the Permanent Works below thelevel of any pipe surround shall be made

good as described in (i) above.

2 Unless otherwise described in Appendix 5/1, all

pipes in or under new embankments shall be laid onlywhen the embankment has been formed and compacted

to formation level under paved areas, to finished

earthworks level in other areas, or to a level which willgive a minimum cover of 1.2 m to the pipes, whichever

is the lowest.

503 (11/05) Bedding, Laying and Surrounding

of Pipes

1 Immediately following the excavation of the

trench, the pipes shall be laid and jointed on the pipebed. Pipes shall be laid so that each one is in contact

with the bed throughout the length of its barrel. The

pipes shall be laid at the level and gradients shown onthe Drawings and schedules. The deviation in level

from that specified at any point shall not exceed 20 mmand in addition the algebraic difference of the deviation

in level at any two points on each pipe shall not exceed

30 mm. In the case of socketed or sleeve jointed pipes

the bed shall be cut away and removed at each socket orsleeve to give a clearance of at least 50 mm, or 100 mmfor trenches in material designated as Hard Material, so

Amendment - November 2006


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Series 500Drainage and Service Ducts

6

that the socket or sleeve does not bear on the bed. Pipesshall be laid on setting blocks only where a concrete

bed or cradle is used.

Pipes and fittings shall be examined for damage and the

joint surfaces and components shall be cleaned

immediately before laying. Measures shall be taken toprevent soil or other material from entering pipes, and

to anchor each pipe to prevent movement before thework is complete.

2 Pipes complying with BS 4962 : 1989 which arecorrugated coilable perforated pipes shall, unless

otherwise permitted in Appendix 5/1, be laid only by

automatic single pass drain laying machines.

3 (11/06) Drainage pipe and bedding combinationsshall be selected from the alternatives described in

Appendix 5/1. The granular material shall consist of

natural and/or recycled coarse aggregate or recycledconcrete aggregate complying with BS EN 13242.

Where recycled coarse aggregate or recycled concreteaggregate is used in this Clause, it shall have been

tested in accordance with Clause 710 and shall not

contain more than 1% other materials (Class X). Pipe

bedding, haunching and surrounding material shall be

as shown on HCD Drawing Numbers F1 and F2, andshall comply with the following:

(i) (05/04) For pipes on beds shown on HCD

Drawing Number F1 as Types B, F and S the

aggregate shall have:(a) (05/04) geometrical requirements in

accordance with Table 5/3;

(b) (05/04) a resistance to fragmentation inCategory LA

50in accordance with

BS EN 13242, clause 5.2 and Table 9;

(c) (11/07) a water-soluble sulfate content of

less than 0.38% of sulfate (as SO3) when

tested in accordance with

BS EN 1744-1, clause 10;

(d) (05/04) all other requirements inCategoryNR

.

(ii) (05/04) For pipes on beds shown on HCD

Drawing Number F1 as Types N and T theaggregate shall comply with the geometrical

requirements of either Table 5/3 or withTable 5/4, and with the fragmentation, water-

soluble sulfate content and other

requirements of (i) above.

TABLE 5/3: (05/04) BS EN 13242, Coarse aggregate

for pipe bedding, haunching and surrounding

material

BS EN 13242, Coarse aggregate (clause 4.3.2)

Category for general grading GC80-20requirements

Category for tolerances at GTNR

(no requirements)

mid-size sieves

Category for maximum values of Gravel - f1.5

fines content Crushed rock, recycled

aggregate - f4

Aggregate size, mm

Nominal pipe diameter, mm

Graded Single sized

Not exceeding 140 - 4/10

Exceeding 140 but not 2/14 or 4/20 4/10, 6/10 or exceeding 400 10/20

Exceeding 400 2/14, 4/20 4/10, 6/14,

or 4/40 10/20 or 20/40

TABLE 5/4: (05/04) BS EN 13242, Fine and all-in

aggregated for pipe bedding, haunching and

surrounding material

BS EN 13242, Fine and all-in aggregate (clause 4.3.3)

Fine All-in

Category for general grading Category Category GA80

requirements GF80

Category for tolerances on GTFNR GT

ANR

manufacturers declared (no requirement) (no requirement)

typical grading

Category for maximum Gravel - f3

values of fines content Crushed rock, recycled

aggregate -f11

Aggregate size, mm

Nominal pipe diameter, mm

Fine All-in

Not exceeding 140 0/10

Exceeding 140 but not 0/1, 0/2, 0/4 0/10 or 0/20

exceeding 400 or 0/6

Exceeding 400 0/10, 0/20 or

0/40

(iii) (11/03) For pipes on beds shown on HCDDrawing Number F1 as Types A and Z

concrete shall be ST4 and ST2, in

compliance to Clause 2602, respectively.Backfilling shall not be carried out until after

the concrete has cured.

Amendment - November 2007


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(iv) Exceptforfilterdrainsafurthersurround

abovethebed,haunchandsurround

describedaboveshallbeprovidedtoaheightof300mmabovethetopofthepipe

consistingofClass8lowertrenchfillmaterialasdescribedinTable6/1andincompliancewithSeries600.

(v) UnlessotherwisedescribedinAppendix5/1

thematerialsusedforthebedding,haunchingandsurroundingoffilterdrainsshallcomply

withtheappropriatebedding,haunchingand

surroundingmaterialsspecifiedinsub-Clauses503.3.(i)to503.3.(iv)andwiththe

requirementsforbackfillingspecifiedin

sub-Clause505.3.

4(05/04)

Materialforbedding,haunchingandsurroundingpipesshallnotbedepositedwithin

500mm,oranyotherdistancesdescribedin

Appendix5/1,ofconcrete,cementboundmaterials,othercementitiousmaterialsorstabilisedcapping

formingpartofthePermanentWorksif,whentestedin

accordancewithTRLReport447either:

(i) (11/05)thewater-solublesulfate(WS)contentexceeds1500mgofsulfate(asSO

4)perlitre

(TestNo.1);or

(ii) (11/09)theoxidisablesulfides(OS)content

exceeds0.5%ofsulfate(asSO4)(TestNo.2andTestNo.4);or

(iii) (11/09)the2:1watertosoilextractpreparedforthedeterminationofwater-solublesulfate

in(i)hasapHvalueoflessthan7.2,when

testedusingtheelectrometricmethodofpHdeterminationinaccordancewithBS1377-3.

(11/09)Atleastfivesamplesofeachmaterialshallbe

testedforWS,OSandpHvalue.Themeanofthe

highesttwovaluesshallbeusedforcomparisonwiththelimitingvalues.Thisalsoappliesifsixtonine

resultsareavailable.Iftenormoreresultsareavailable,themeanofthehighest20%oftheresultsshallbeusedforcomparisonwiththelimitingvalues.

5 (11/07)Materialforbedding,haunchingand

surroundingpipesshallnotbedepositedwithin500mm,oranyotherdistancesdescribedin

Appendix5/1,ofmetallicstructuralelementsforming

partofthePermanentWorksif,whentestedinaccordancewithTRLReport447either:

(i) (11/05)thewater-solublesulfate(WS)content

exceeds300mgofsulfate(asSO4)perlitre

(TestNo.1);or(ii) theoxidisablesulfides(OS)contentexceeds

0.06%ofsulfate(asSO4)(TestNo.2andTest

No.4).


testedforWSandOS.Themeanofthehighesttwo

valuesshallbeusedforcomparisonwiththelimitingvalues.Thisalsoappliesifsixtonineresultsare

available.Iftenormoreresultsareavailable,themeanofthehighest20%oftheresultsshallbeusedforcomparisonwiththelimitingvalues.

(11/07)Therequirementsin(i)and(ii)aboveshallnot

applytometallicitemsprotectedbyconcreteand

ancillarymetallicitemssuchasthetopsofchambersandgullies.

6 (05/04)Exceptwherethepipelineistobetestedin

compliancewithClause509beforebackfilling,the

completionofthebedding,haunchingandsurroundingofthepipesistobecarriedoutimmediatelyafter

jointing.Thebed,haunchandsurroundshallbebrought

upequallyonbothsidesofthepipeensuringthatitisincontactwiththeundersideofthepipebarrelandbe

carefullycompactedinlayersnotexceeding150mm

thicknessensuringfullcompactionnexttothetrenchwalls.Pipesshallbemaintainedtolineandlevelduring

thebedding,haunchingandsurroundingoperations.

Wherepipelinesaretobetestedbeforebeingcoveredthebeddinghaunchingandsurroundingmaterialshall

onlybebroughtupsufficientlytosupportthepipeline

andthejointsshallbeleftexposeduntilthetestiscompletedsatisfactorily.

7 (05/04)DuctconstructionshallcomplywiththerequirementsofAppendix5/2.

504 Joii of Pipes

1 Rigidjointsshallmeanjointsmadesolidby

caulkingthesockets,orboltingtogetherflangesintegral

withthepipes.Flexiblejointsshallmeanjointsmadewithdeformableringsorgasketsheldbetweenpipe

spigotsandsockets,sleevesorcollars.

2 Jointsinsurfacewaterdrainsshallbewatertightcomplyingwithsub-Clause3ofthisClauseorpartly

watertightcomplyingwithsub-Clause4ofthisClauseasdescribedinAppendix5/1.Fouldrainsshallhavewatertightjoints.Filterdrainsshallhavejoints

complyingwithsub-Clause6ofthisClause.Ductsneed

nothavewatertightjointsunlessotherwisedescribedinAppendix5/2.

3 (05/01)Watertightjointsshallcomplywiththe

appropriateBritishStandards,themanufacturers

instructionsandthefollowing:



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(i) Rigidjointsshallbeusedonlywhere

permittedinAppendix5/1.Spigotsand

socketsofrigidjointsmaybecaulkedwithtarredropeyarnorequivalentandthesocket

completelyfilledwithmortardesignation(i)complyingwithClause2404,excludinglime;afilletofmortarbeingworkedaroundthe

socketextendingforalengthofnotlessthan

50mmfromthefaceofthesocket.Ironpipeswithopensocketsshallhaverigidjoints

caulkedwithleadwoolorequivalent.

(ii) JointsinPVC-Upipesshallnotbemadewithplasticsolvent.

(iii) Flexiblemechanicaljointsmaybeusedwith

surfacewaterpipescomplyingwithBS65.

(iv) (11/03)JointsforcastironpipestoBS437shallcomplywithBSEN877.

(v) Jointsinthermoplasticsstructuredwallpipe

shallcomplywithClause518.

4 (05/01)Partlywatertightjointsforsurfacewater

drainsshallbetestedinaccordancewithsub-Clause

509.7andshallbeBritishStandardjointsornon-BritishStandardjoints.Pushfitjointsshallhavearegisterto

ensurethatthepipeisfullypushedintothejoint.

Corrugatedsteelpipesoflockseamfabrication,notexceeding900mminternaldiameter,shallbejoinedin

accordancewiththemanufacturersinstructions.Bolted

segmentalplatepipearchesorcircularpipes,not

exceeding900mminternaldiameter,shallbejoinedinaccordancewithsub-Clause501.6(iv)andthe

manufacturersinstructions.

5 Whereaconcretebed,cradle,archorsurroundisusedwithrigidpipeshavingflexiblejoints,jointfiller

boardcomplyingwithClause1015shallbeplacedin

contactwiththeendofthesocketatapipejointandshallextendthroughthefullthicknessoftheconcretein

contactwiththepipe.Suchjointsintheconcretebed,

haunchorsurroundshallbeatintervalsnotexceeding5metresexceptwherethespacingofjointsinthepipe

exceeds5metreswhentheyshallbeateachpipejoint.

6 (05/01)Jointsinpipesforfilterdrainsshallcomply

withtheappropriateBritishStandardandwiththefollowing:

(i) Non-porousandunperforatedconcreteand

claypipeswithspigotandsocket,rebatedorogeejointsshallbelaidwithunsealedjoints

andwithagapof10mmbetweentheendof

thepipeandtheinnerendofthesocketor

rebate.Thepipesshallbesupportedwithtarredropeyarnorequivalentflexible

jointingmaterialwithinthesocketsoverthe

lowerthirdofthecircumferencesothatthere

arenoverticalstepsbetweenonepipeandanother.Suchpipesshallonlybeusedwith

TypeBfiltermaterialasdescribedin

Clause505.(ii) Theendsofperforated,castellatedorporous

concretepipeswithrebatedjointsand

perforatedclaywarepipeswithrebatedorwithflexiblesleevejointsshallbepushed

tightlytogether.Thewidthofslotsmeasured

alongthelengthofthepipelineformedbyjointingcastellatedpipesshallnotexceed

10mm.

(iii) Perforatedorslottedthermoplasticspipeswithspigotsandsocketsorsleevesmaybe

dry-jointedorjointedasdescribedinsub-Clauses3and4ofthisClause.

(iv) Otherperforatedpipesshallbejointedas

unperforatedpipesofthesamematerial.

7 Jointsinpipesforserviceductsshallcomplywith

theappropriateBritishStandardandwiththefollowing:

(i) Pipesforductsshallbejointedsothatnosilt,

grit,groutorconcretesurroundisableto

entertheduct.Pipeswithpush-fitjointsshallhavearegistertoensurethatthepipeisfully

pushedintothejoint.

(ii) (05/05)JointsinpipestoBS3506shall

complywithBSEN1452-1to5as

appropriate.

505 Bkfilli of trehes Filer dris

1 Backfillingshallbeundertakenimmediatelyafter

therequiredoperationsprecedingithavebeen

completed.

2 ExceptwhereotherwisedescribedinAppendix5/1,

trenchesotherthanfilterdraintrenchesshallbebackfilledabovethepipesurroundmaterialdescribedinClause503,withClass1,2,or3generalfillmaterial

complyingwithSeries600.

3 (11/06)FilterdrainsshallbebackfilledasdescribedinAppendix5/1withTypeA,TypeBorTypeCfilter

materialwhichshallconsistofnaturalorrecycled

coarseaggregateorrecycledconcreteaggregatecomplyingwithBSEN13242andthefollowing:

(i) forTypeAandC,gradingrequirementsfor

unboundmixturesinaccordancewith

Table5/5andBSEN13285;(ii) forTypeB,geometricalrequirementsin

accordancewithTable5/5andBSEN13242;



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(iii) aresistancetofragmentationinCategory

LA50

inaccordancewithBSEN13242,

clause5.2andTable9;

(iv) (11/07)awater-solublesulfatecontentofless

than0.38%ofsulfate(asSO3)whentestedinaccordancewithBSEN1744-1,clause10;

(v) allotherrequirementsinCategoryNR

;


(vi) benon-plasticwhentestedinaccordance

withBS1377:Part2.

WhererecycledcoarseaggregateorrecycledconcreteaggregateisusedinaccordancewiththisClause,itshall

havebeentestedinaccordancewithClause710andshallnotcontainmorethan1%othermaterials(ClassX).

tble 5/5:(11/05)gri eomeril reqiremes for filer ri meril

type a type B type c

Standard BSEN13285 BSEN13242 BSEN13285

Size,mm 0/20 20/40

Asdescribedin

Appendix5/1

Gradingandoversizecategories GF(withan

additionalsieve)

GC

80-20

Oversizecategory OC80

-

Categoryfortolerancesatmid-sizesieves - GTNR

(norequirement)

Categoryformaximumfines UF3

fNR

(norequirement)

Summarygradingrequirements

Sievesize,mm Percentagebymasspassing

80 - 100

AsdescribedinAppendix5/1

63 - 98-100

40 100 80-99

20 80-99 0-20

10 50-90 0-5

4 30-75 -

2 15-60 -

0.500 0-35 -

0.125 0-4 -

0.063 0-3 -

%insizefraction4/10 5-35 -

2/4 5-35 -

Filtermaterials,whentestedinaccordancewith

sub-Clause509.8shallhavepermeabilityrequirementsasdescribedinAppendix5/1.

WhenTypeAmaterialisusedwithpipesotherthan

porouspipesatleast15%ofthematerialshallbelargerthanthediameterofholeorlargerthan1.2timesthe

widthofslotinthepipe.4 (11/07)Materialforbackfillingtrenchesandfilterdrainsshallnotbedepositedwithin500mm,orany

otherdistancesdescribedinAppendix5/1,ofconcrete,boundmaterials,othercementitiousmaterialsor

stabilisedcappingformingpartofthePermanentWorks

if,whentestedinaccordancewithTRLReport447either:


exceeds1500mgofsulfate(asSO4)perlitre(TestNo.1);or


10/29


(ii) (11/09)theoxidisablesulfides(OS)content

exceeds0.5%ofsulfate(asSO4)(TestNo.2

andTestNo.4);or

(iii) (11/09)the2:1watertosoilextractprepared

forthedeterminationofwater-solublesulfatein(i)hasapHvalueoflessthan7.2,whentestedusingtheelectrometricmethodofpH

determinationinaccordancewithBS1377-3.


testedforWS,OSandpHvalue.Themeanofthehighesttwovaluesshallbeusedforcomparisonwith

thelimitingvalues.Thisalsoappliesifsixtonine

resultsareavailable.Iftenormoreresultsareavailable,themeanofthehighest20%oftheresultsshallbeused

forcomparisonwiththelimitingvalues.

5 (11/07)Materialforbackfillingtrenchesandfilterdrainsshallnotbedepositedwithin500mm,orany

otherdistancesdescribedinAppendix5/1,ofmetallic

structuralelementsformingpartofthePermanentWorksif,whentestedinaccordancewithTRLReport

447either:


exceeds300mgofsulfate(asSO4)perlitre

(TestNo.1);or

(ii) theoxidisablesulfides(OS)contentexceeds

0.06%ofsulfate(asSO4)(TestNo.2andTest

No.4).


testedforWSandOS.Themeanofthehighesttwovaluesshallbeusedforcomparisonwiththelimiting

values.Thisalsoappliesifsixtonineresultsare

available.Iftenormoreresultsareavailable,themeanofthehighest20%oftheresultsshallbeusedfor

comparisonwiththelimitingvalues.

(11/07)Therequirementsin(i)and(ii)aboveshallnot

applytometallicstructuralelementsprotectedby

concreteandancilliaryitemssuchasthetopsof

chambersandgullies.6 (05/04)Backfillingshallbedepositedandcompacted

incompliancewithClause612.Filtermaterialforfilter

drainsshallbedepositedinlayersnotexceeding225mmloosedepth;eachlayerbeingcompactedin

compliancewithTable6/4Method3.

7 (05/04)Materialshallbedepositedinevenlayers

andshallnotbeheapedinthetrenchbeforebeingspread.Spreadingandcompactionshallbecarriedout

evenlywithoutdislodging,distortingordamagingthe

pipe.Powerrammersshallnotbeusedwithin300mm

ofanypartofthepipeorjoint.8 (05/04)Exceptincarriageways,otherpavedareas

andlocationsdescribedinAppendix5/1,backfillof

trenchesshallbebroughtuptogroundlevel.Where

topsoilisatthesurfaceonthelineofthetrenchthe

uppersectionofthebackfillshallbetopsoilofthe

thicknessdescribedinAppendix6/8,orofthesamethicknessandqualityoftopsoilasthesurrounding

groundwherenothicknessisspecified.Fortrenchesincarriagewaysorotherpavedareasthebackfillshallbebroughtuptoformationlevel,orsub-formationlevel

wherecappingisrequired,unlessalowerlevelis

describedinAppendix5/1.Sheetingandotherexcavationsupportsshallberemovedasthefilling

proceedsunlessotherwisedescribedinAppendix6/3.

9 (05/04)Thepositionofserviceductsshallbemarked

whenthetrenchesarebackfilledandpermanentmarker

blocksandlocationpostsprovidedasdescribedinAppendix5/2.

506 coei o Exisi dris chmbers chels

1 WheredescribedinAppendix5/1,existingdrains

shallbeextended,connectedandjointedtonewdrains,

chambersorchannels.Allsuchconnectionsshallbemadeduringtheconstructionofthenewdrainorother

workandtheirpositionsrecordedbytheContractorwho

shallhandtotheOverseeingOrganisationacopyoftherecordoftheconnectionsmadethepreviousday.Where

pipeconnectionsaremadetoexistingbrickconcreteor

stonedrains,chambersorchannels,thepipesshallbewellandtightlybuiltintotheconcrete,brickormasonry

workandbesoplacedastodischargeatananglenot

greaterthan60tothedirectionofflowofthedrainorchannelandwiththeendofthepipecarefullycuttothe

necessaryangle.Wheretheconnectionsarebetween

pipedrains,specialconnectingpipesshallbelaidandjointedasdescribedinAppendix5/1.

2 Beforeenteringorbreakingintoanexistingsewer

ordrain,theContractorshallgivenoticeofhisintentiontodosototheauthorityresponsibleforthepipelineto

whichtheconnectionistobemade.

3 (11/06)Existingdrainsnolongerrequiredshall,as

requiredbyAppendix5/1,besealedwithST2concrete,

incompliancetoClause2602,orremovedandreplacedwithgeneralfillmaterialcomplyingwithClause601

andTable6/1andcompactedincompliancewith

Clause612,orgroutedwitha1:10,cement:pfamix.Thegroutshallusetheminimumquantityofwaterto

ensurethefluiditynecessarytorenderitcapableof

beingpumpedtotheendsofthepipe.Itshallbeusedwithinonehourofmixingbutwhenthemixcontainsa

retardingadmixturethistimemaybeextendedin

accordancewiththemanufacturersinstructions.ThecementshallcomplywithBS197-1andthepulverised-

fuelash(pfa)withBS3892:Part2,finenesstoZoneB

andsulfatecontentnotexceeding1.5%.



11/29


507 (05/01) chmbers

1 (11/03)Chambers,otherthanthoseusedinmotorwaycommunicationsinstallations,shallinclude

manholes,catchpits,inspectionchambers,drawpitsand

walledsoakaways.ChambersshallbeofthetypespecifiedinAppendix5/1,constructedinaccordance

withHCDDrawingNumbersF3toF12andF25toF27

asappropriatetothattype.Chambersforusein

motorwaycommunicationsinstallationsshallcomplywithSeries1500.AllSTconcretereferredtointhis

ClauseshallcomplywithClause2602,unlessotherwise

describedinAppendix5/1.

2 (11/03)FoundationstochambersshallbeofST4

concrete.Channelsforchambersshallbeformedand

finishedsmoothinthefoundationconcreteor

constructedofpreformedhalfcirclechannels,withsidesbenchedinST4concrete,ormortardesignation(i)

complyingwithClause2404excludinglime.

Alternativelyforinspectionchambersnotexceeding1.3metresindepthtoinvert,completeplasticsunitsor

otherunitsinequivalentmaterialsurroundedby

150mmofST4concretemaybeused.

3 BrickworkshallcomplywithSeries2400andbe

builtwithmortardesignation(i)inEnglishbond.The

jointsofbrickworkwhereexposedshallbefinishedasspecifiedforunpointedjointsinClause2412.Theends

ofallpipesshallbeneatlybuiltintothebrickworkand

finishedflushwithmortardesignation(i).

4 (11/04)PrecastconcretechambersshallcomplywithBS5911-3andBSEN1917andtheparticular

requirementsdescribedinAppendix5/1.Castin-situ

concretechambersshallbeconstructedofST4concretecomplyingwithClause2602andtheparticular

requirementsdescribedinAppendix5/1.

5 (11/04)Corrugatedgalvanizedsteelchambersshall

complywithClause501withinsituST4concreteinvertsandprecastconcretecoverslabscomplyingwith

BS5911-3andBSEN1917andtheparticular

requirementsdescribedinAppendix5/1.TheyshallbesurroundedwithwellgradedgranularmaterialClass6M

asdescribedinTable6/1compactedinaccordancewith

Clause612.

6 (11/04)Wherethedepthofinvertofchambers,

excludinginspectionchambers,exceeds900mmbelow

thefinishedsurfaceofthecarriagewayortheadjacentground,manholestepscomplyingwithBSEN13101

shallbebuiltinaccordancewithrelevantSeriesF-HCD

Drawings.Steelworkusedforladders,handholdsandotherfittingsshallcomplywithBS970:Part1andbe

galvanizedincompliancewithClause1909afterfabrication.ThreadedcomponentsshallbegalvanizedincompliancewithClause1909.

7 (11/03)Excavationaroundchambers,exceptthose

describedinsub-Clause5ofthisClause,shallbebackfilledwithgeneralfillmaterialasdescribedin

Table6/1andcompactedincompliancewith

Clause612.Wheremechanicalcompactionisimpracticable,theexcavationshallbebackfilledwith

ST2concrete.Wherethereareprecastconcreteaccess

shaftstoprecastconcretechambers,theshaftsshallbesurroundedbyaminimumthicknessof150mmofST4

concrete,andtheremainingexcavationbackfilledwith

generalfillmaterialasdescribedinTable6/1compactedincompliancewithClause612.

8 Chambersforfouldrainsshallbetestedfor

watertightnessasandwhererequiredinAppendix5/1.

9 (11/09)Chambercovers,gratingsandframesshall

beasdescribedinAppendix5/1andshallcomplywithBSEN124andsub-Clauses10and15ofthisClause.

Thecovershallbeofsuitablematerial,designandconstructiontoachieveanin-serviceskid/slipresistance

potentialsuitablefortheconditionsofuse.Thisshallbe

determinedbytheacceleratedpolishtestmethoddescribedinBS9124.ThePSRVshallbeasstatedin

Appendix5/1.

10 ClassD400unitsandaboveshallincorporateapermanentnon-rockfeatureeithertriangularpoint

suspensionormachinedfaces.

11 (11/03)Boltssuppliedforlooselycouplingseparatesectionsofcoversandgratingsshallbesteelhexagonheaded,complyingwiththerequirementof

BSENISO4016,BSENISO4018and

BSENISO4034andbegalvanizedincompliancewithClause1909.TheyshallnotbelessthansizeM16

completewithhexagonnutandshallbeprovidedwith

meanstopreventunduetighteningofunitsections.

12 UnlessotherwisespecifiedinAppendix5/1,all

covers,gratingsandframesshallbesuppliedinafine

cast(uncoated)condition.WhereacoatingisspecifiedinAppendix5/1,thecoatingshallonlybeappliedwhen

thesurfacesofthecastingareclean,freefromrustanddry.

13 RequirementsforspecialdutycoversforuseincarriagewaysshallbeasdescribedinAppendix5/1.

14 Gratingsforcatchpitchambersshallhavea

minimumwaterwayareaasdescribedinAppendix5/1.

15 Twosetsofliftingkeysshallbedeliveredtothe

OverseeingOrganisationforeachtypeofcover

supplied.Atleasttwokeyways,asdetailedonHCDDrawingNo.F17,shallbeprovidedineachcomplete

cover,oneineachsegmentforsegmentalcovers.Arecessforaprisingbarshallbeincorporatedinmanholecoversunlessothermeansoflooseningthecoverfrom

theframeareprovided.



12/29


16 Framesforchambercoversandgratingsshallbeset

incementmortardesignation(i)complyingwithClause2404oraproprietaryquicksettingmortarof

equivalentstrength.

17 Forallpipelinesexceptthoseconstructedwithcorrugatedpipesthenearestjointtoanychambershall

benotmorethan500mmfromtheinnerfaceofthe

wallandshallnotberestrictedbyanyconcrete.Betweenthisandthenextjoint,thelengthofthe

articulatedpipeshallbeinaccordancewithTable5/6.

taBLE 5/6: Leh of arile Pipe

nomil Pipe dimeer (mm) Leh of Pipe (mm)

450andless 500to750

Greaterthan450 750to1000

18 Wheretheadjustmentorreplacementofexisting

framesandcoversorgratingsisrequired,theunitsshall

betakenupandre-fixedorremovedandreplacedwithnewunitscomplyingwithsub-Clauses9to15ofthis

Clause,orasdescribedinAppendix5/1.Ontakingup

orremovaloftheunit,anyconcreteormortarbeddingshallbebrokenoutandthesurfaceprepared.Where

existingframesandcoversorgratingsaretobe

adjusted,theContractorshalltakeuptheunitandcleanitforre-use.Theadjustedorreplacedunitsshallbelaid

onamortarbedcomplyingwithsub-Clause16ofthis

Clause.Thefinishedthicknessofthemortarbedshallbebetween10mmand25mm.Whererequiredin

Appendix5/1,coversandgratingsshallbebeddedusing

aproprietaryquicksettinghighstrengthmortar.Detailsofsuchmortarshallbetotheapprovalofthe

OverseeingOrganisation.Unlessotherwisedescribedin

Appendix5/1,adjustedorreplacedframesandcoversorgratingsshallbesetflushwiththenewsurface.Any

additionaladjustmentsshallbebymodifyingthe

brickworkincompliancewithsub-Clause507.3orby

usingaframeofasuitabledepth.Oncompletionoftheworks,eachcovershallbeliftedandtheframeand

seatingcleaned.

#508 gllies Pipe Jios

1 (05/06)Gulliesshallbetrapped,untrappedor

sumplessasdescribedinAppendix5/1andbeinaccordancewithHCDDrawingNumbersF13andF14.

AllSTconcretereferredtointhisClauseshallcomply

withClause2602unlessotherwisedescribedinAppendix5/1.

2 Gulliesshallbeconstructedsothatnopartofthe

spoutortraphasacross-sectionalarealessthan2/3rd

thatoftheoutlet.Thedepthofwatersealintrapped

gulliesshallbenotlessthan50mm.

3 (05/05)PrecastconcretegulliesshallcomplywithBS5911-6andclaygullieswithBSEN295.Insitu

concretegulliesshallbeasdescribedinAppendix5/1andconstructedofST4concreteof150mmminimumthickness,usingpermanentorremovableshuttering.

Whereinsituconcretegulliesareformedwith

permanentshuttering,suchshutteringshallhaveacurrentBritishBoardofAgrmentRoadsandBridges

Certificate.

4 Gullygratings,kerbtypegullycoversandframesshallcomplywithBSEN124andthefollowingand

shallbeoftheclassesandsizesdescribedin

Appendix5/1.

5 (05/01)TheuppersurfaceofgullygratingsshallbeflatexceptwhereotherwisedescribedinAppendix5/1.

Slotsingratingsorbetweengratingsandframesshall

notbeorientatedparalleltothedirectionoftrafficexceptwheretheslotsarelessthan150mmlongorless

than20mmwide.Minimumwaterwayareasshallbeas

specifiedinAppendix5/1.UnlessotherwisespecifiedinAppendix5/1,allgratingsandframesshallbesupplied

inafinecast(uncoated)condition.Whereacoatingis

specifiedinAppendix5/1,thecoatingshallonlybeappliedwhenthesurfacesofthecastingareclean,free

fromrustanddry.Framesshallbebeddedonmortar

complyingwithsub-Clause507.16.Brickworkshallcomplywithsub-Clause507.3.

6 (05/04)Backfillingtoprecastgulliesshallbecarriedoutuptosub-formationlevelwithgeneralfillmaterial

Class1,asdescribedinTable6/1compactedin

compliancewithClause612.Wheremechanicalcompactionisimpracticable,thebackfillingshallbein

ST2concrete.Theremainderofthebackfillingshallbe

inappropriatecappingandroadpavementmaterialsexceptthatwheremechanicalcompactionofcappingor

unboundmixtureforsubbaseisimpracticableST2

concreteshallbeused.7 (11/03)Gullyconnectionpipesshallbeeitherflexibleorrigidnotexceeding0.7minlengthwith

flexiblejointsforadistanceof2mfromthegullyand

shallbeinaccordancewithsub-Clause507.17whenenteringchambers.Junctionpipesshallbemanufactured

ofthesametypeandclassofmaterialastheremainder

ofthepipesintherun.Junctionpipeswhicharelaidbutnotimmediatelyconnected,shallbefittedwith

temporarystoppersorsealsandthepositionofallsuch

junctionsshallbeclearlydefinedbymeansofstakesortracingwiresproperlymarkedorlabelled.Saddlesmay

beusedtoformjunctionsonlywherepermittedinAppendix5/1.Nointernalprojectionsgreaterthan5mmwillbepermitted.Saddlesforasbestoscement



13/29


andplasticspipesshallbeinstalledinaccordancewith

themanufacturersrecommendations.Saddleswithclay

pipesshallbejointedwithmortardesignation(i)complyingwithClause2404,excludinglime.Saddles

andpipesshallbesurroundedwithST2concrete.8 (05/01)Wheretheadjustmentorreplacementofexistingframesandgratingsisrequired,theunitsshall

betakenupandre-fixedorremovedandreplacedwith

newunitscomplyingwithsub-Clauses4and5ofthisClause,orasdescribedinAppendix5/1.Ontakingup

orremovaloftheunit,anyconcreteormortarbedding

shallbebrokenoutandthesurfaceprepared.Whereexistingframesandcoversorgratingsaretobe

adjusted,theContractorshalltakeuptheunitandclean

itforre-use.Theadjustedorreplacedunitsshallbelaid

atalevel,unlessotherwisedescribedinAppendix5/1,

6mmbelowtheadjoiningroadsurfaceonamortarbedcomplyingwithsub-Clause507.16.Thefinished

thicknessofthemortarbedshallbebetween10mmand25mm.WhererequiredinAppendix5/1,coversand

gratingsshallbebeddedusingaproprietaryquick

settinghighstrengthmortar.DetailsofsuchmortarshallbetotheapprovaloftheOverseeingOrganisation.Any

additionaladjustmentshallbemadebymodifyingthe

brickworkincompliancewithsub-Clause507.3orbyusingaframeofsuitabledepth.Oncompletionofthe

works,eachgratingshallbeliftedandtheframeand

seatingcleaned.

509 tesi clei

1 DrainsrequiredinAppendix5/1tohavewatertightjointsshallbetestedasdescribedinAppendix1/5in

sections,eg.betweenchambers,bymeansoftheairtest

describedinsub-Clause2ofthisClause.Ifapipelineisrejectedbecauseofafailedairtest,aspartofthe

rectificationwork,awatertestasdescribedinsub-

Clause3ofthisClausemaybecarriedoutasanalternativeacceptabilitytest.Beforetesting,theendsof

thepipelinetobetested,includingthoseofshortbranches,shallbepluggedandsealed.

2 Forthepipelineairtest,airshallbepumpedinby

suitablemeansuntilastablepressureof100mmhead

ofwaterisindicatedinaU-tubeconnectedtothesystem.Theairpressureshallnotfalltolessthan

75mmheadofwaterduringaperiodof5minutes

withoutfurtherpumping,afteraninitialperiodtoallowstabilization.Drainswithtrapsshallbetestedto50mm

headofwaterandthepermissiblelossshallthenbeno

morethan13mmheadofwaterin5minuteswithoutfurtherpumpingaftertheinitialstabilisingperiod.

3 Forthepipelinewatertest,thepipesshallbefilled

withwaterunderaheadofnotlessthan1.2mabovethe

crownofthepipeatthehighendandnotmorethan6mabovethepipeatthelowend.Steeplygradedpipelines

shallbetestedinsectionssothattheabovemaximumis

notexceeded.Thetestshallcommencenotlessthantwohoursafterfillingthetestsectionatwhichtimethelevel

ofwaterattheverticalfeedpipeshallbemadeupto

producetherequired1.2mminimumtesthead.Theloss

ofwaterovera30minuteperiodshallbemeasuredbyaddingwateratregular10minuteintervalstorestore

theoriginalwaterlevelandrecordingtheamountsso

added.Thedrainwillhavepassedthetestifthevolumeofwateraddeddoesnotexceedonelitreperhourper

linearmetreofdrainpermetreofnominalinternal

diameter.

4 (05/01)Allpipelineslessthan350mmdiameter,

excludingserviceductsshallbecheckedbydrawing

througheachcompletedlengthofpipeasphericalmandrelofadiameter10%lessthanthenominalbore

ofthepipesbeingtested.

5 (11/04)DuringtheprogressoftheWorksallexistingchambers,gulliesandroddingeyesshallbekeptclean

andfreefromobstruction.Oncompletionofthewhole

oftheWorks,allchambers,gulliesanddrainsincludingverge/surfacewaterdrainsandfilterdrainsbut

excludingallfinandnarrowfilterdrainsshallbe

flushedfromendtoendwithwaterandleftfreefromobstructions.Catchpitchambersshallbeleftcleanand

freefromsilt.UnlessotherwiserequiredinAppendix90/1(MCHW5.9.3)allcarrier,foulandfilterdrainsbutexcludingall

finandnarrowfilterdrainsshallbesurveyedbyClosed

CircuitTelevision(CCTV)inaccordancewiththerelevantrequirementsofSeries9000(MCHW5.9,Parts

1to5).Furtherguidanceisprovdedin

sub-ClausesNG509.4andNG509.5.

6 Thepipesandfiltermaterialoffilterdrainsshallat

alltimesbeleftcleanandfreefromsiltandobstruction.

7 WheredescribedinAppendix1/5,samplesofone

ormorepartlywatertightjointsforpipelinesuptoandincluding900mmdiametershallbetestedwithahead

ofwaterkeptlevelwiththecrownofthepipe.Thejointwillnotbeacceptediftheflowthroughthejointinlitres

perminuteexceeds20timesthesquareofthenominal

internaldiameterofthepipeinmetres.

8 Permeabilitytestsshallbeasdescribedin

Appendix5/1.

9 (05/01)Serviceductsshallbecheckedbydrawinga

woodenmandrel,asshownonHCDDrawingNumber

I2,throughastheductsarelaidbutwhereasethasto

begiventothelineofductsthewoodenmandrelshallbereplacedbyanironmandrel250mmlongbutofthe

samediameterasthewoodenversion.



14/29


510 Srfe Wer chels driechel Bloks

1 Surfacewaterchannelsanddrainagechannel

blocksshallbeconstructedasdescribedin

Appendix5/3.

2 Surfacewaterchannelsshallcomplywith

Clause1103.

3 DrainagechannelblocksshallcomplywithClause1101.

511 L dris

1 (11/03)Existinglanddrainswhicharepermanently

severedbytheWorksshallbelocatedandconnected

intoanewdrain,pipeorditchallasdescribedinAppendix5/1.ThelengthsremainingwithintheWorks

shallbecleanedoutfromthenewdraintrenchfaceasnecessary.AnypipedisturbedbytheWorksshallbe

re-laidtoensureafreedischargeintothenewdrain.

DisusedendsofinterceptedlanddrainsshallbeadequatelysealedwithST2concreteincompliancewith

Clause2602.

2 Whereanexistinglanddrainisexposedandseveredbytemporarytrenchexcavation,theContractor

shallmarkthepositionofthedrainandrecordit.The

drainshallbedivertedintoanexistingdrainorwatercourse.Alternatively,thenormalfunctioningof

thedrainshallbecontinuedbytheconstructionofa

pipelineorchanneladequatelysupportedacrosstheexcavation,untilpermanentrestorationismadeonthe

originalline.

3 TheContractorshallnotifytheOverseeingOrganisationofanylanddrainwhichisblockedoris

otherwisedefectivewhenthedrainisfirstexposed.

4 Severedmoledrainsshallbeledstraightintonewdrains;alternativelytheyshallwhererequiredin

Appendix5/1beinterceptedbytheconstructionofa

landdrain.Wheretheyhavebeendisturbedmolechannelsshallbecleanedoutandfilledlocallywith

TypeAfiltermaterialorasotherwisedescribedin

Appendix5/1.

512 Bkfilli o Pipe Bys veres oBries

1 (05/04)UnlessotherwisedescribedinAppendix5/1,

fillingtopipebaysandvergesonbridgesshallbewell

gradedgranularmaterialnotexceeding20mmsize

containingnotmorethan3%ofmaterialpassingthe0.063mmsieveandwithauniformitycoefficientof

morethan5.Itshallbelaidandcompactedincompliancewithsub-Clause505.6and7.Thematerial

shallmeetthesulfaterequirementdescribedin

sub-Clauses503.4,503.5,505.4and505.5.

513 Permeble Bki o Erh ReiiSrres

1 UnlessotherwisedescribedinAppendix5/1,

permeablebackingshallconsistofoneofthefollowingmaterialsexceptwhenthefillingadjacenttothe

structureisselectedcohesivematerial(Class7A),

selectedconditionedpulverised-fuelash(Class7B)orchalk:

(i) Aminimumthicknessof300mmofgranular

materialcomplyingwiththerequirementsofClause505forTypeAorTypeCmaterial

and,inaddition,satisfyingthefollowingcriteria:

Pipingratio,definedas

15percentsizeofthedrainagematerial,

85percentsizeofthebackfillmaterial

Permeabilityratio,definedas

15percentsizeofthedrainagematerial,

15percentsizeofthebackfillmaterial

wherethepercentsizeofamaterialisthesizeof

particlecorrespondingtothegivenpercentordinateoftheparticlesizedistributiongraph.

(ii) Porousno-finesconcrete,castinsitu

225mmthickcomplyingwiththerequirementsofClause2603.

(iii) (05/08)Precasthollowconcreteblocks

complyingwiththeBSEN771-3laidin

stretcherbondwithdryjointsin225mmthickwallingwithholesvertical.

2 (11/03)Whenthefillingadjacenttothestructureis

selectedcohesivematerial(Class7A),selected

conditionedpulverised-fuelash(Class7B)orchalk,thepermeablebackingshallbeaminimumthicknessof

300mmof0/4or0/2,CPorMP,sandcomplyingwith

BSEN12620unlessotherwisedescribedin

Appendix5/1.

514 Fi dris

geerl

1 FindrainsshallcomplywiththisClauseandthe

specialrequirementsdescribedinAppendix5/4.

Thetermsthickness,width,heightandcoreshallhavethemeaningsindicatedonHCDDrawingNumberF18

unlessotherwisedescribedinAppendix5/4.


5


15/29


Thetermfindrainshallmeanaplanargeocomposite

structuredesignedtoperformthesamefunctionasa

narrowfilterdrain.

2 Wherefindrainsaredesignedforlateralentryof

waterfromonesideonlytherequirementsforflowratesinsub-Clauses4and5ofthisClauseshallapplytothe

faceorplanedesignedtoadmitortransmitwater.

3 Thematerialsofwhichthedrainismadeshallbetreatedsothattheyareprotectedfromthedeleterious

effectsofshorttermexposuretoultravioletlight,and

shallberesistanttodegradationbyacids,alkalis,commonchemicals,bacteria,fungiandmoulds

occurringinsoilsandhighwayconstructionmaterials.

AfterexposuretoultravioletlighttheOverseeingOrganisationmayrequireevidencethatthematerials

stillcomplywiththerequirementsofthisClause.The

drainshallbeprotectedfromdamageandultravioletlightandbelabelledtoidentifythegradeand

manufacturerorsupplier.Wherenecessary,theside

intendedforentryofwaterandthedirectionofin-planeflowshallbeidentified.

geoexile

4 Thegeotextileshall:

(i) (11/03)inbothmachineandcross-machine

directions,sustainatensileloadofnotlessthan5.0kN/matbreakandhaveaminimum

failurestrainof10%whendeterminedinaccordancewithBSENISO10319;

(ii) (11/03)haveaminimumpunctureresistance

of1200Nwhendeterminedinaccordance

withBSENISO12236;

(iii) (11/03)haveaminimumtearresistanceof200Nwhendeterminedinaccordancewith

ASTMStandardD4533-91(1996);

(iv) haveasizedistributionofporeopeningssuchthattheapparentopeningsizeO

90when

determinedinaccordancewithBS6906:Part2,orotherappropriatetest,isasstatedinAppendix5/4;

(v) allowwatertoflowthroughit,ineither

direction,normaltoitsprincipalplaneatarateofnotlessthanthatstatedin

Appendix5/4underaconstantheadofwater

of100mmandamaximumbreakthroughheadof50mmwhendeterminedin

accordancewithBS6906:Part3.

composie dri

5 (05/01)Thecompositedrainshall:

(i) haveaflowratethrougheachfaceofthe

drainofmorethan75%ofthevalue

specifiedinsub-Clause4(v)ofthisClauseon

thesideorsideswhereinflowoccurs.This

valuemaybefoundbyeither:

(a) directmeasurementofthecomposite

drainusingamodifiedversionofBS6906:Part3;or

(b) calculationbasedontheflowrate

obtainedbythestandardtestin

BS6906:Part3andthepercentagecontactareaofthedrainagecore

obtainedfromsub-Clause13ofthis

Clauseorotherappropriatemethod;

(ii) havevaluesoflongtermin-planeflowrates

asstatedinAppendix5/4whendetermined

inaccordancewithsub-Clauses14and15of

thisClause.Thevaluesofhydraulicgradientandminimumappliedstressesshallbeas

giveninTable5/7.

taBLE 5/7: (05/01) applie Sresses (kn/m)

Hyrli grie

Hcd dri type 5 6 7 10

Sub-Clause14:

NormalStress

ShearStress

50

10

50

10

50

10

100

10

Sub-Clause15:NormalStress

100

100

100

100

Sub-Clause15:

Hydraulic

Gradient

0.1

1.0

1.0

1.0

0.1

1.0

Jois

6 Findrainsshallbecapableofbeingjointed

longitudinallyorlaterallyintopipesystemsorchambersforinflowandoutflowpurposesandbeselfjointing

eitherdirectlyorthroughpurposemadeattachmentpiecesforformingcontinuousdrainlengths.Allsuchjointsshallbeformedsoastopreventtheingressofsoil

particlesorotherextraneousmaterialintothedrain.

Findrainjointstransversetothedirectionofflowshallhavevaluesofin-planeflowratesnotlessthanthat

requiredbysub-Clause5(ii)ofthisClause.

Findrainjointsparalleltothedirectionofflowandanyexposededgesshallbeprotectedfromtheingressofsoil

byageotextilewrappingwithaminimumoverlapof

150mm.

Pipes

7 (11/06)FordrainType6pipesshallbeperforatedor

porousandcomplywithsub-Clause501.3.Pipes



16/29


complyingwithBS4962:1989shallhaveaminimum

UltimatePipeStiffness(STES)valueof1400N/m2.

FordrainType7pipesshallbeunperforatedthermoplasticspipecomplyingwithBS4660,BS5481,

BSEN1401,BSEN1852-1orBSEN12666-1slottedlongitudinallyalongthetopsurfaceandstressrelieftreated(ifrequired)inaccordancewiththesystem

manufacturerspublishedspecification.

8 (05/01)Pipejointsshallcomplywiththe

requirementsoftherelevantBritishStandardforthepipeusedorClause518.

Bkfill Srro Meril

9 PipesurroundmaterialfordrainTypes6and7shall

complywithsub-Clause503.3(i)or503.3(ii)orTypeA

orCmaterialcomplyingwithsub-Clause505.3.

Wherefindrainsareinstalledinatrenchbackfill

materialshallbetheoriginalas-dugmaterialfromthe

trenchunlessotherwisespecifiedinAppendix5/4.

dimesios

10 (11/03)UnlessotherwisedescribedinAppendix5/4

thedimensionsofthefindrainshallbeasshownon

HCDDrawingsF18andF21.ThepipediametershallbeasstatedinAppendix5/4.Thedrainslopeangle(x),as

shownonDrawingF19,shallbenotgreaterthan15%

fromtheverticalunlessotherwisestatedinAppendix5/4.

Isllio Hli

11 InstallationoffindrainsshallbeasshownonHCD

DrawingNumbersF19toF21.Wherefindrainsare

assembledonsitetheassemblyareashallbecleananddryandfreeofwind-bornepollutants.Anymaterial

whichbecomescontaminatedmustbereplaced.No

geotextileorcorematerialshallbeexposedtodaylight

(oranysourceofultravioletradiation)foraperiodexceedingacumulativetotalof50hours.Anygeotextile

orcorematerialexposedtodaylight(oranysourceofultravioletlight)foraperiodexceedingacumulativetotalof50hoursshallbereplacedunlessitcanbe

demonstratedthatthematerialsofthedrainstillcomply

withtherequirementsofthisClause.

Wherefindrainsarelaidintrench,thetrenchbottom

shallbefreeofirregularitiesandtotherequiredlevels

giveninAppendix5/4.Rockandotherhardprotuberancesshallberemovedandanyexcesscutin

thetrenchbottomfilledandcompactedbacktothe

requiredgradewithsuitableexcavatedorimported

material.Thedrainshallbelaidwiththeappropriatefaceagainst

thesideofthetrenchadjacenttothecarriagewayandin

theappropriatedirection.Thissideofthetrenchshall

havewallssufficientlycleantoenablethefindrainto

comeintoclosecontactwiththewallwhenthetrenchis

backfilledandcompacted.CompactionshallbeinaccordancewithClause612.Findrainsinstalledaspart

ofthePermanentWorksshallbeprotectedfromsurface

water,contamination,andaccidentaldamageduringconstruction.

Thefindrain,pipesurroundandbackfillshallbe

installedsoastocausenodamagetothefindrain.Whereanydamagedoesoccur,thedamagedmaterials

shallbereplacedbynewmaterial.

Aftertheinstallationofthefindrainhasbeencompletedamarkertapeshallbelaidapproximately75mmabove

thefindraininthepositionshownonHCDDrawing

NumbersF19andF20.Thetapesshallbegreenself-colouredPVCorpolytheneplasticnotlessthan0.1mm

thickand150mmwide.

Ieifiio

12 TheContractorshallobtainandmakeavailablethe

followinginformationforeachseparateconsignmentoffindraindeliveredtoSite:

(i) geotextileandcorename,grade/numberand

massperunitarea;

(ii) namesandaddressesofsystemproducer,and

geotextile,coreandpipemanufacturers;

(iii) manufacturingcharacteristicsand

constituentsofgeotextileandcore.Thisshallincludecompositionandtypeofconstituent

filaments,threads,fibres,films,tapesand

othercomponents;

(iv) consignmentnumberanddeliverydate;

(v) acopyofthesitedeliverynote.

tes Meho for he Peree co are of

drie core

13 (i) Thetestdeterminestheareaofonefaceofadrainagecorewhichwillbeincontactwitha

geotextilefilterasapercentage.

(ii) Theapparatusrequiredisasfollows:

(a) loadingdeviceabletoapplya

compressiveloadofatleast2kNand

havingaflatsteelbase;

(b) flatsteelloadingplate200mmx200mm;

(c) printersinkandroller(orpad);(d) sheetofthincompressiblerubber;

(e) planimeter.



17/29


(iii) Thetestprocedureshallbeasfollows.Cut

threerepresentativetestspecimens200mm

x200mm(2mm).Applyinktoone200mmx200mmfaceofaspecimenand

coverwithasheetofplainpaperandathincompressiblerubbersheet.Placethepreparedspecimenintotheloadingdevice

andgraduallyapplytheloadof2kNand

maintainfor5minutes.Releasetheloadandremovethespecimenandseparateitfromthe

paper.Usingtheplanimeterfindthetotal

areaofthepaperwhichhasreceivedanimprint.Repeatforallspecimens.

(iv) Thepercentagecontactarea=

totalareaofimprint

areaoftestspecimen

(v) Thereportshallinclude:

(a) areferencetothismethod;

(b) sampleidentificationdetails;

(c) individualandmeanpercentagecontact

areas;

(d) detailsofanydeviationfromthe

specifiedtestprocedure.

(vi) Alternativemethodsofdeterminingthe

percentagecontactareamaybeemployedwiththepriorapprovaloftheOverseeing

Organisation.

tes Meho for deermii he thikess of Fi

dris uer Speifie norml Sher Sresses

14 (i) (05/01)Thetestdeterminesthethicknessof

thefindrainundersustainednormalandshearstresses.Alongtermthickness(at

100,000hours)iscalculatedbyextrapolation

andashorttermequivalentnormalload

whichproducesthelongtermthicknessis

determined.

(ii) Theapparatusrequiredisasfollows:

(a) asuitablecompressiontestingmachine,whichshallhaveaverticaltravelat

leastthenominalthicknessofthe

specimen.Itshallbecapableofsustainingthenecessaryloadstowithin

1%accuracyforthedurationofthetest;

(b) thecompressiontestingapparatus,whichshallincludeafixedbaseplate

andparallelmoveabletopplatewithflatsteelsurfacewithsufficientfrictiontopermitthedevelopmentoftherequired

shearforces;

(c) ameansofmeasuringthemean

thicknessofthespecimentoanaccuracyof0.01mm.

Asanalternativeto(a)and(b),anappropriateinclined

planeandkentledgesystemmaybeemployedtoproducethenormalandshearloads.

Thetestprocedureshallbeasfollows:

(iii) Cutsixrepresentativespecimensofminimumsize100mmx100mm

symmetricallyaboutthecoredesign.Three

specimensshallbetestedinaccordancewith(v)belowandthreeinaccordancewith(vi)

below.

(iv) Thetestspecimenshallbeplacedsymmetricallyonthebaseplateandcovered

bythetopplate.Themeansofmeasuring

thicknessshallbeattachedandtheinitialthicknessmeasured.

(v) (11/03)Applytheloadsmoothlyandasquicklyaspossibletothetopplate.Thefull

load(normalandshear)shallbeappliedin

lessthan20secondsandsustainedforatleast1000hours.Theappliedstressesshallbe

thosegiveninTable5/7.Atleastfour

measurementsofthicknessshallbemadeduringeachunitoflogarithmictimeafterthe

firstminute.Determinethelongtermthicknessofthespecimenasthethicknessofthespecimenat1000hoursreducedby2T

whereTisthedifferenceinthicknessesof

thespecimenthicknessrecordedat100hoursand1000hours.Repeatthetestonthetwo

otherspecimens.Thetestspecimensshallbe

maintainedataconstanttemperatureof

20C2Cthroughoutthetestperiod.

(vi) Applyincreasingincrementsofnormalload

tothespecimen.Determinetheshortterm

equivalentloadwhichshallbetheloadwhichwhenappliedforaperiodof205

minutesproducesaspecimenthicknessequal

(withinanaccuracyof0.05mm)tothelongtermthicknessofthespecimenobtainedat

(v)above.Repeatthetestontheothertwo

specimens.

(vii) Thereportshallinclude:

(a) areferencetothismethod;

(b) sampleidentificationdetails;

(c) theinitialthicknessofthesample;

(d) theappliedload;


x100


18/29


(e) thethicknessofeachsampleat100and

1000hoursandthemeanofthethree

results;

(f) aplotofpercentagereductionin

thicknessagainstlogarithmictime;

(g) themeanlongtermthickness;

(h) themeanshorttermequivalentload;

(i) anydeviationsfromthespecifiedtest

procedure.

deermii I-ple Flow uer compressie

Loi

15 (05/01)In-planeflowshallbedeterminedinaccordancewithBS6906:Part7exceptthatthe

followingconditionsshallapply:(a) theappliednormalstressshallbethegreater

ofthevaluegiveninTable5/7

(forsub-Clause15)orthemeanshortterm

equivalentstressasdeterminedinsub-Clause14(vi)ofthisClause;

(b) thesampleshallbetestedsuchthatthe

measuredflow(orflows)isinthesamedirectionastheprincipalflow(orflows)

whenthefindrainisinservice;

(c) thefoamrubberoptionofthetestprocedure

shallbeused(detailsofthefoamrubbertobeusedmaybeobtainedfromthe

OverseeingOrganisation);

(d) thehydraulictransmissivityshallbereported

foreachofthehydraulicgradientsemployed.

tes Mehos

16 Notwithstandingtherequirementsof

sub-Clauses13,14and15ofthisClause,variationsin

thetestmethodsspecifiedthereinshallbemadewheredeemednecessarybytheBritishBoardofAgrment

followingconsultationwiththemanufacturer.Allsuchvariationsshallberecordedinthereport.

cerifiio

17 Findrainsandconstituentmaterialsshallhavea

currentBritishBoardofAgrmentRoadsandBridgesCertificatecertifyingtheappropriatephysicalproperties

whentestedinaccordancewiththisClause.

515 nrrow Filer dris

geerl

1 NarrowfilterdrainsshallcomplywiththisClauseandthespecialrequirementsdescribedinAppendix5/4.

ThetermnarrowfilterdrainreferstodrainTypes8or9

indicatedintheHCDDrawingNumberF18.They

consistofaporousorperforatedpipelaidinanarrowtrenchsurroundedbygranularmaterialwherethe

granularmaterialand/orthepipeisenclosedbyalayerofgeotextilefilter.Narrowfilterdrainsandfindrainsperformthesamefunction.

Merils

2 Thegeotextilematerialsusedinthedrainshallbe

storedsothattheyareprotectedfromthedeleterious

effectsofshorttermexposuretoultravioletlight,andshallberesistanttodegradationbyacids,alkalis,

commonchemicals,bacteria,fungiandmoulds

occurringinsoilsandhighwayconstructionmaterials.AfterexposuretoultravioletlighttheOverseeing

OrganisationmayrequireevidencethatthematerialsstillcomplywiththerequirementsofthisClause.Theyshallbeprotectedfromdamageandultravioletlightand

belabelledtoidentifythegradeandmanufactureror

supplier.

3 Thegeotextileusedinnarrowfilterdrainsshallcomplywithallrequirementsofsub-Clause514.4for

geotextilesusedinfindrains.

FordrainType8thegeotextilesurroundtothepipeshallconsistofaprefabricatedcontinuousclosefitting

sock.Alternativelythepipeshallbefirmlywrappedina

singlelayerofgeotextilewithanoverlapofbetween50and75mmandsecuredaroundthepipeinamanner

soastopreventtheingressofsoilparticlesorother

extraneousmaterialandwithoutaffectingthepermeabilityofthewrappedmaterial.Splicesbetween

lengthsofsockorlayershallhaveoverlapswithinthese

dimensionsandbesecurelytied.

FordrainType9thegeotextilesurroundtothegranular

materialshallhaveaminimumoverlapof250mm

including100mmdown-tuck.Splicingoflengthsofgeotextileshallconsistofminimum600mmoverlap

securedwithpinsormechanicalties.Whereanoutletpipepassesthroughthegeotextileaseparatepieceofgeotextileshallbewrappedroundtheoutletpipe,flared

againstthegeotextileinthefilterdrainandsecured.

Wheredrainlengthsareterminatedatchambers,thegeotextileshallbesecuredagainstthechamberwallsby

suitablemeanssoastopreventtheingressofsoil

particlesorotherextraneousmaterialintothedrain.

4 (05/01)Pipesandfittingsshallcomplywithsub-Clauses514.7and514.8.Wherecoilablepipesto

BS4962:1989areusedtheyshallbecapableofbeing

straightenedsoastolieflatwithoutrestraintinthe

trenchbottombeforebackfilling.

5 (11/03)Thegranularmaterialusedfortrenchinfill

shallcomplywiththerequirementsfornon-plasticity,



19/29


LAcategoryandsulfatecontentofsub-Clause505.3

andhaveagradingwithinthelimitsofTable5/8.The

materialwhentestedinaccordancewithsub-Clause509.8shallmeetthepermeabilityrequirements

describedinAppendix5/4.taBLE 5/8:(11/03)nrrow Filer dri: treh

Ifill gri Reqiremes

HCDDrainType 8 9

MaximumParticleSize

mm

40 40

D5Sizemm >0.125 >0.125

D15Sizemm Asstatedin

Appendix5/4

-

D85Sizemm - >HoleDiameteror1.2Times

WidthofSlotin

Pipe

UniformityCoefficient 5to12 5to12orifCu1mm

Dn=Sievesizepassingn%byweightofmaterial

dimesios

6 UnlessotherwisedescribedinAppendix5/4thedimensionsofthenarrowfilterdrainshallbeasshown

onHCDDrawingNo.F18.ThepipediametershallbeasstatedinAppendix5/4.Thedrainslopeangle(x),asshownonDrawingF20,shallbenotgreaterthan15%

fromtheverticalunlessotherwisestatedin

Appendix5/4.

Isllio Hli

7 NarrowfilterdrainsshallbeinstalledasshownonHCDDrawingNumberF20.Beforeduringandafter

installationthegeotextileshallbeprotectedfrom

contamination,damageandexposuretoultraviolet

radiationinaccordancewithsub-Clause514.11.

Theexcavatedtrenchbottomshallbefreeof

irregularitiesandtotherequiredlevelsgivenin

Appendix5/4.Rockandotherhardprotuberancesshallberemovedandanyexcesscutinthetrenchbottom

filledandcompactedbacktotherequiredgradewith

suitableexcavatedorimportedmaterial.DrainType9shallhavetrenchwallssufficientlycleantoenablethe

geotextiletocomeintoclosecontactwiththewallwhen

thegranularmaterialisplacedinsideit.Thedepositionandcompactionofinfillshallbeinaccordancewith

sub-Clause505.4forfilterdrains.

NarrowfilterdrainsinstalledaspartofthePermanentWorksshallnotbeusedforthedisposalofsurfacewater

run-offduringconstruction.Narrowfilterdrains

exposedtosurfacewateringressshallbetemporarily

protected.

Markertapesshallconformandbeinstalledin

accordancewithsub-Clause514.11.

8 TheContractorshallobtainandmakeavailablethe

informationrequiredinsub-Clause514.12inrespectof

thegeotextileandpipe.

cerifiio

9 ThegeotextileshallhaveacurrentBritishBoardofAgrmentRoadsandBridgesCertificatecertifyingthe

appropriatephysicalpropertieswhentestedin

accordancewiththisClause.

516 combie drie Kerb Sysems

(11/04) geerl

1 (11/04)Combineddrainageandkerbsystemslisted

inAppendix1/11shallbetreatedasotherfeaturestobedesignedbytheContractor.Combineddrainageand

kerbsystemsshallconformtoBSEN1433andtothe

specialrequirementsinAppendix5/5.

2 (11/04)Combineddrainageandkerbsystemsshall

besuitablefortheirintendeduseandplaceof

installationintheWorksandasstatedinAppendix5/1.

TheContractorshallprovideevidenceofsuchsuitabilityforthepurposetotheOverseeing

OrganisationinaccordancewithAppendix1/5.

3 (11/04)DesignflowsgiveninAppendix5/5shallbe

accommodatedwithoutsurchargewithinthemain

combineddrainageandkerbsectionandbeneaththe

undersideofanyinletslotsections.

4 (11/04)Whereapplicable,thewidthanddepthof

combineddrainageandkerbsystemunitsshallnot

exceedthedimensionsgiveninAppendix5/5.

5 (11/04)Whenusedadjacenttoporousasphalt

surfacingmaterials,unitsshallincorporatesideentry

inletstopermitdrainageofwaterheldwithintheproousasphalt.Inletsshallcomplywiththerequirementsof

Appendix5/5andshallhavethecapacitytodrain

porousasphalt.

(11/04) clssifiio

6 (11/04)Combineddrainageandkerbsystems,

excludingin-situsystem,shallbeclassifiedasfollowsaccordingtotheirintendeduseandshallbeasstatedin

Appendix5/5:

(i) C250:

(ii) D400;and



20/29


(iii) where,exceptionally,combinedkerband

drainageunitshavetobelocatedinareas

subjectedtolargenumbersofhighspeedheavygoodsvehicles,ClassE600combined

kerbanddrainageunitsshallbeconsidered.(11/04) Wer tihess

7 (11/04)Jointsbetweenunitscomprisingthesystem

andbetweenthechannelandunits,shallbedesignedto

avoidleakageofsurfacewater.Jointsbetweenbridgedeckwaterproofingandcomponentpartspassing

throughthewaterproofingshallbewatertight.Sealants

shallbecompatiblewiththewaterproofingsystem.

(11/04) Isllio Hli


belaidandjointedinaccordancewiththe

manufacturerswritteninstructions.

9 (11/04)Adjacentcarriageway,footway,vergeor

centralreservetobedding,backing,surroundingor

jointingofcombineddrainageandkerbunitsshallbeinaccordancewiththemanufacturerswritteninstructions.

10 (11/04)Junctions,connectingpipesandotherfittings

comprisingthecombineddrainageandkerbsystemshallcomplywithsub-Clause501.3andshallbeas

describedinAppendix5/5.Thecombineddrainageand

kerbsystemshallincorporatemeasurestoenableroddingoftheoutfallpipeworkandadequateaccessfor

jettingbywaterjettingequipmentintothesystem.

(11/04) clei


becleanedoutbyappropriatemeansandshallbeleft

cleanandfreefromallobstruction.Thecompleted

combineddrainageandkerbsystemsshallbesurveyedbyClosedCircuitTelevision(CCTV)inaccordance

withtherelevantrequirementsofSeries9000(MCHW

5.9,Parts1to5).

517 Lier drie chel Sysems

geerl

1 (11/04)ThelineardrainagechannelsystemslistedinAppendix1/11shallbetreatedasotherfeaturestobe

designedbytheContractor.Thein-situlineardrainage

channelsystemsshallconform,whereapplicable,tosub-Clauses517.2to517.17andtherequirementsin

Appendix5/6andAppendix1/11asappropriate.The

prefabricatedlineardrainagechannelsystems,whereapplicable,shallconformtoBSEN1433andwiththe

otherrequirementsinAppendix1/5.

2 (11/04)Lineardrainagechannelsystemsshallbe

suitablefortheirintendeduseandplaceofinstallationintheWorks.TheContractorshallprovideevidenceof

suchsuitabilityforthepurposetotheOverseeing

OrganisationinaccordancewithAppendix1/5.

3 DesignflowsgiveninAppendix5/6shallbe

accommodatedwithoutsurchargewithinthemain

channelsectionandbeneaththeundersideofanyinletslotsections.

4 (11/04)Whereapplicable,thewidthanddepthof

lineardrainagechannelsystemunitsshallnotexceed

thedimensionsgiveninAppendix5/6.

5 (11/04)Dimensionsofinletslotsshallcomplywith

thefollowingcriteria:

(i) forprefabricatedlineardrainagechannelsystemstheyshallconformtoBSEN1433;

(ii) forin-situlineardrainagechannelsystems

theyshallconformtoBSEN1433.

6 (11/04)Whenusedadjacenttoporousasphalt

surfacingmaterials,unitsshallalsoincorporateside

entryinletstopermitdrainageofwaterheldwithintheporousasphalt.Inletsshallcomplywiththe

requirementsofAppendix5/6andshallhavethe

capacitytodrainporousasphalt.

(11/04) Weheri Resise

7 (11/04)Markingrelatingtothegradeofweathering

resistancefordrainagechannelsmadeofconcreteshallbeasstatedinAppendix5/6.

(11/04) clssifiio

8 (11/04)lineardrainagechannelsystemsshallbeclassifiedasfollowsaccordingtotheirintendeduseand

shallbeasstatedinAppendix5/6:

(i) C250;

(ii) D400;and

(iii) where,exceptionally,lineardrainagechannel

systemshavetobelocatedinareassubjected

tolargenumbersofhighspeedheavygoodsvehicles,ClassE600combinedkerband

drainageunitsshallbeconsidered.

(11/04) Wer tihess

9 (11/04)Jointsbetweenunitscomprisingthesystem

andbetweenadjacentconstructionandthesystemshall

bedesignedtoavoidleakageofsurfacewater.Whereapplicable,jointsbetweenbridgedeckwaterproofing

andcomponentpartspassingthroughthewaterproofingshallbewatertight.Sealantsshallalsobecompatiblewiththewaterproofingsystem.



21/29


10 (11/04)Junctions,connectingpipesandotherfittings

comprisingthelineardrainagechannelsystemshallcomplywithsub-Clause501.3andshallbeasdescribed

inAppendix5/6.Thelineardrainagechannelsystem

shallincorporatemeasurestoenableroddingoftheoutfallpipeworkandadequateaccessforjettingby

waterjettingequipmentintothesystem.

(11/04) clei

11 (11/04)Thelineardrainagechannelsystemsshallbe

cleanedoutbyappropriatemeansandshallbeleftclean

andfreefromallobstructiononcompletionoftheWorks.Thecompletedlineardrainagechannelsystems

shallbesurveyedbyClosedCircuitTelevision(CCTV)

inaccordancewiththerelevantrequirementsofSeries9000(MCHW5.9,Parts1to5).Furtherguidanceis

providedinsub-ClausesNG509.4andNG509.5.

Mfre Sysems

12 (11/04)ManufacturedsystemsshallconformtoBSEN1433.

I Si Sysems

13 (11/04)In-situsystemsshallcomplywiththerequirementsofsub-Clauses1103.1,1103.3and1103.4.

Theyshallalsocomplywiththerequirementsof

sub-Clause1103.2exceptthattheconcreteshallbe

consideredasplainconcretewithinthetermsofthissub-Clause,irrespectiveoftheinclusionof

reinforcement.

14 (11/04)In-situsystemsshallbeslipformedexcept

forsectionsatgullieswhichshallbehandformed.Full

depthjointsshallbeconstructedattheinterfaceateach

sideofgullieswitha25mmthickfillerboardcomplyingwithClause1015andsealedinaccordance

withClauses1016and1017.

15 (11/04)Thecentralvoidmaybeformedbyaninflatedtubewhichisthenremoved,orbyaninsitu

suitablepipeorsimilarformerfitforthepurpose.Atgullypositionstheinnerformershallbepre-sleevedwithasuitablepipeorsimilarformerfitforthepurpose

whichshallbeofsufficientlengthtooverlapthetwo

jointsoneithersideofthegully.

16 (11/04)Thecentralvoidshallbecheckedinaccordancewithsub-Clause509.4.Verificationofslot

widthsshallbedeterminedbysuitabletemplates.

17 (11/04)ReinforcementshallcomplywithSeries1700.Covertoreinforcementshallbenotlessthan

75mm.

18 (11/04)Triallengthsandtestingofin-situchannelsshallbeundertakeninaccordancewithclauses6and8.6

ofBS5931andtherelevantparagraphsofclause9of

BSEN1433respectively.

518 (05/01) thermoplsis Srre WllPipes Fiis

geerl

1 ThermoplasticsstructuredwallpipeshallcomplywiththisClauseandthespecialrequirementsdescribedinAppendix5/1.

Thetermstructuredwallpipeshallmeanalltypesof

smoothborepipeexceptsolidwallhomogeneouspipe.Typicalformsofconstructionclassifiedasstructured

wallpipesinclude:singlewallexternallystructured

smoothbore,twinwall,foamedcoreandspirallywound.

Thetermfittingshallmeanaproductusedin

conjunctionwiththepipetoformthesystembut

excludinggulliesmanholechambers,inspectionchambersandaccesschambers.

Merils

2 Thematerialsfromwhichthepipeandfittingsare

made,shallbetreatedsothattheyareprotectedfromthedeleteriouseffectsofshorttermexposureto

ultravioletlight,andshallberesistanttodegradationby

acids,alkalis,commonchemicals,bacteria,fungiandmouldsoccurringinsoil,highwayconstruction

materialsandhighwaydrainagesystems.Inaddition,

thematerialsfromwhichthepipeandfittingsaremade,shallnotincorporateanyadditivesinquantitiessufficienttocausemicrobiologicaldegradationorto

impairtheconformitytothechemical,physicaland

mechanicalpropertiesorimpactresistancerequirementsgiveninsub-Clause5ofthisClause.Thespecification

oftherawmaterialshallbeagreedbetweenthe

certificationbody,asdefinedinsub-Clause15ofthisClause,andthemanufacturerandmayincorporate

re-processableand/orrecyclablematerial.Theagreed

specificationshallincorporatetolerancesforeachoftherelevantcharacteristicsdefinedintheappropriateclause

ofprEN13476.TheContractorshallsubmittotheOverseeingOrganisation,priortocommencementoftheWorks,completedinformationsheetsinaccordance

withAppendix5/7.

dimesios

3 Systemsforcarrierdrainageshallbebetween

150mmand900mmnominalinternaldiameter.Pipesfornarrowfilterdrainsshallbe110mmor150mm

nominalinternaldiameter.Pipesforserviceductsshall

havenominalinternaldiametersofbetween50mmand

150mm.Pipesforsub-soildrainageshallincorporate

slotsorholeswithaminimumcrosssectionalareaof1000mm2permetrerunofpipe.



22/29


Theboreofthepipeandfittingsshallbeinaccordance

withthestandardtolerancesfornominalboresgivenin

BSEN476.

appere

4 (05/06)Thesystemshallhaveasmoothboreandbe

freefromanyburs,flashorotherinconsistenciesthatcouldhaveadetrimentaleffectontheperformanceof

thesystem.Pipesandfittingsfordrainageshallbe

externallycolouredeitherterracottaorblack.Thecolour

ofductingpipesshallbeinaccordancewithNational

JointUtilitiesGrouppublicationGuidelinesonthePositioningandColourCodingofUtilitiesApparatus.

AnyvariationinthecolourshallbedescribedinAppendix5/2.

Srre Wll Pipe

5 ThestructuredwallpipeshallhavethepropertiesdefinedinTable5/9.

Amendment-May2006 22

taBLE 5/9:(11/03)Reqiremes for Srre Wll Pipe

Propery Rele Sr Reqireme

General BSENISO2897-1,BSENISO2897-2and

BSISO11922-1

Dimensionstobespecified

Ringstiffness BSENISO9969 6kN/m2minimum.Lowerstiffnessvaluesarepermittedifdesign

calculationstoBSEN1295-1(UKnationalannex),basedonsite

specificinstallationconditions,indicatesatisfactoryperformance.)

CreepRatio BSENISO9967 PVC-U -maximum2.5

PPandPE -maximum4.0

Highvolumelowpressurejetting WRcJettingTestMethod Minimumacceptablefailurepressure137bar.

Longitudinalbending sub-Clause518.11 Pipeswithnominaldiameters350mmtohaveadifferencein

dimensionswhenmeasuredintheverticalaxisoflessthan5%of

thepipelengthandnolocalpermanentdeformationoccursduring

thetest.

Impactresistanceat0C BSEN1411withd25striker

of1kg

Preliminarytesttest10piecesasdescribedinBSEN1411,

droppingthestrikerfromaheightof1m.Ifanytestpiecesfail,

subjectthepipetothefulltestgiveninclause7.3ofBSEN1411

startingthestrikerfromadropheightof400mm.Themeanminus

1.64timesthestandarddeviationmustexceed1m.

Impactresistanceat23C BSEN1411withstrikeras

above

Valuetobederivedfromthesamebatchofpipeasusedinthe

impactresistancetestat0C.TheH50(mean)value-10%tobe

usedastheminimumvalueforqualitycontroltesting.

Alternativelythe0CtestcanbeusedasaQCtestifthe

manufacturerchooses.

Roddingresistance sub-Clause518.12 Pipeswithnominaldiameters350mmtohaveanaveragefailureenergy>3joules

Staticfrictioncoefficient(ducts) TS12-24 Pass

Creepatelevatedtemperature

(ducts)

BSENISO9967 Testtobecarriedoutat45C,creepratiotobelessthan2timesthe

valuestoBSENISO9967.

Resistancetopointloads(ducts) sub-Clause518.13 Noperforationat10%rodtravel

Tensilestrengthofaseam BSEN1979 prEN13476

Fiis

6 ThefittingsforusewithstructuredwallpipeshallhavethepropertiesdefinedinTable5/10.


23/29


Series 500

Drainage and Service Ducts

TABLE 5/10: (11/03) Requirements for Fittings

Property Relevant Standard Requirement

General BS EN ISO 2897-1, Dimensions to be specified

BS EN ISO 2897-2 and

BS EN ISO 11922-1

Ring stiffness (excluding ISO 13967 6 kN/m2 minimum

couplers)

Rodding resistance sub-Clause 518.12 Fittings with nominal diameters 350 mm to have an average failure

energy >3 joules

Strength and flexibility of BS EN 12256 BS EN 12256

fabricated fittings

Impact resistance (drop test) Drop Test to BS EN Fall height 1000 mm at a temperature of 0C. Product less than ND

12061: 1999 300 shall show no damage. Others may fail but must be identified

as handle with care

Watertightness of fabricated BS EN 1053 0.5 bar for 1 minute

fittings

Pipe and Fittings

7 The pipe and fittings shall have the propertiesdefined in Table 5/11.

TABLE 5/11 (11/03) Requirements of the Systems

Property Relevant Standard Requirement

Leaktightness of joints - diameter BS EN 1277 Method 4 Use default values from BS EN 1277

distortion (watertight joints) Condition B Temperature

(23 2)C

Leaktightness of joints - angular BS EN 1277 Method 4 Use default values from BS EN 1277

deflection (watertight joints) Condition C Temperature

(23 2)C

Leakage rate from partially- sub-Clause 509.7 Less than 20 times the square of the ID of the pipe in metres shall

watertight joints flow through the joint in litres per minute

Resistance to wheel loads BS EN 1437 adapted to Less than 5% deformation when loaded to 100 kN (for unequalsuit HA loading conditions branches only)

23Amendment - November 2004

Bedding, Backfill and Surround Material

8 (11/03) All systems shall be installed in accordance

with the pipe and bedding combinations given inAdvice Note HA 40 (DMRB 4.2.5). Other combinations

shall be supported by calculations in accordance with

BS EN 1295-1 UK National Annex. Bedding, backfilland surround materials are classified in Clause 503 and

Clause 505.

Installation and Handling

9 The bedding, surround and backfill shall be

installed so as to cause no damage to the pipes and

fittings. Installation of the pipe and fittings, particularly,procedures for preparation and execution of jointing

operations, shall be in accordance with themanufacturers instructions.


24/29


Series 500Drainage and Service Ducts

Identification

10 The Contractor shall maintain records with the

following information for each separate consignment ofstructured wall pipe or fittings delivered to Site:

(i) system name, ring stiffness grade/numberand size;

(ii) name and address of the system

manufacturer;

(iii) consignment number and delivery date; and

(iv) a copy of the site delivery note.

Test Method for Longitudinal Bending

11 (i) The test specimen shall be a six metre lengthof pipe or the maximum length available

from the manufacturer (if less than sixmetres).

(ii) The apparatus shall include:

(a) two level support blocks at least

250 mm wide and of sufficient height toallow the pipe to sag over its length

without touching the ground;

(b) a means of measuring the vertical

distance between the pipe at the centreof the span and a fixed point of

reference to an accuracy of 0.5 mm.

(iii) The test procedure shall be as follows:

(a) condition the specimen for at least

1 hour at 23C 2C;

(b) set the supports at a distance apart equal

to the length of pipe minus 500 mm;

(c) place the pipe symmetrically on the

supports;

(d) measure the distance between the top of

the supports and the fixed point of

reference, in the vertical axis throughthe centre line of the pipe;

(e) after a period of two minutes measure

the distance between the underside ofthe pipe at mid span and the fixed point

of reference;

(f) record the difference in readings as a

percentage of pipe length.

24Amendment - November 2004

Test Method for Rodding Resistance (Internal

Puncture)

12 (i) The test specimens shall be:

(a) twenty specimens cut from the

structured wall pipe, each specimen tobe 242 mm to 246 mm in length and a

quarter section of the circumference or;

(b) twenty specimens cut from a number ofidentical fittings.

(ii) The apparatus shall include:

(a) a standard drop weight pipe testing

apparatus capable of dropping a tupfrom a height of 1 m;

(b) a 300g tup which can be varied in 30g

multiples with a striker consisting asteel rod 18 mm in diameter with a

9 mm hemispherical end;

(c) a 250 mm x 250 mm box containing dry

Leighton Buzzard sand (Garside quarry)

such that there is at least 100 mm of

sand beneath the test specimen whenbedded down.

uk specification highways series 0500

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