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4.16 STOKMWATER DRAINAGE7.4.16(November, 1983)4.16.1 generalStormwater drainage installations have oftengiven trouble* The main reasons have been(i)(ii)(iii)(iv)small diameter pipes, which havebecome blocked}changes of direction in pipe runs,which have become blocked;inadequate provision for clearingblockages; andthin-walled pipes broken by pressureof wet concrete, or incompletely sealedpipe joints through which cement grouthas entered during construction, so thatpipes have been blocked permanentlybefore they have ever functioned.In addition f intakes and outlets have often performeddi sappo intingly.To avoid future trouble, the followingprecautions should be observed*4*16.2 Pipes andpipe layout4.16*2*1 Minimum diameterDrain pipes less than 150 mm in diameterbecome blocked very easily. Only pipes of 150 mmor more should be used for stormwater drainageinstallations.4.16.2*2 MaterialDrain pipes should normally be of rigid orunplasticized PVC, unless some good reason makes theuse of an alternative material desirable. PVC drainpipes are light, easy to instal and cheap* They havegood flow characteristics* A wide range of specialfittings is available* Damage is easy to repair, andP7C does not corrode or otherwise deteriorate underconditions normally associated with highway structuresand railway bridges* PVG drain pipes should complywith BS 4660, JIS K-6741, or a comparable acceptablenational standard, and have dimensions similar tothose given in Table 4.16.1.
TABLE 4.16.1PVC DRAIN PIPESSTANDARDBS 4660JIS IU6741NOMINALSIZE110160100150APPBOXINSIDEDIAMETER10315210?154
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UNIVERSITY OF HONG KONGLIBRARYHong
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NOTESThe Civil Engineering Manual o
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CONTSUTSClauseNo,TitleClans®No*Tit
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ALPHABETICAL INDEXTitleClause No.AA
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TitleClause No.GeneralGeneralGenera
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TitleClause No.PERMITS AND SHORT-TE
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TitleClause No.Safety Fences, Pedes
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¥.1*1.2 (Cont'd.)(July 7?)Item 7 s
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V.1.1.4 (Cont'd.)(July 7?)Item 22It
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Y*1*1*7 (Cont'd*)(July 77)If releva
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(July 77)££S2£§S£i^(a)This pro
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7«1*2«1 (Cont f d*(July 77)P*G«B
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(July 7?)acquire land for street wi
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V.1.2,3 (Cont'd.)(July ?7)(ii) By n
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(July 77)1 *41*4*1OHThese instructi
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(July 77)1.4.31 *4*4 FinanceMonthly
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,1«5.1 (Cont'd*)Fuly 77)(d)(vii) W
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V.1.6(July 77)1>6 KefersiacesReleva
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Appendix 1 - p«2(July 77)Pliase I
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V.1Appendix 1 - p*4(July 77)Phase I
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V. 1Appendix 1 - p*6(July 77)Phase
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V.1Appendix 1 - p.8(July 77)NotesSu
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V.1Appendix 1(July 77) - p*1QPART I
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1* PresentationHighways Office* P+V
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v.rAppendix 2 - p*3(July 77)3*7 Dgg
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Y.1Appendix 2 - p*5(July 7?)(v) des
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1* PresentationV.1Appendix 5 w P*1(
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V.1Appendix 5 -(July ?7)(b)(c)(d)lo
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V.1Appendix 4 - P»2(July 77)Schedu
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The amendment is direct conversion
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Name ofRoad/StreetApprovedDrawingBa
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The amendment is direct conversion
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JName of j ApprovedRoad/Street j Dr
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List of Roads Affeoted by Road Wide
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V.1 'Appendix 6(July 77)Prom s Chie
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Appendix 8(July 11}M'E M 0From s C.
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7.1Appendix 10(July 77)MEMOFrom $ C
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7.1Appendix 12(jtdy 77)MEMOFrom i C
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Appendix 14(July 77)Prom s D*L»Ref
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Appendix 16(July 7?)MEMOi Registrar
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V.1Appendix 1? - p«2(July 77)I? Ex
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Highways () DivisionWORKS CONTINGEN
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V.1Appendix 20(juLy 77)CHECK LIST -
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V.1Appendix 21 - p»2(July 77)FOE O
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7.1Appendix 22 - p.2(July 77)21. G.
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H.H.4.3V.1Appendix 24(July 77)Our R
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H.H.Appendix 26(July 77)HIGHWAYS (H
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V.2.2.1(July 77)2*2 PROCEDURE2 * 2
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(July 11}2.5 PRIVATEForms FGForms F
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?*2«3*1 (Cont f d«)(July 77)Appen
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?« 2.3*3 (Cont s d)(July 7?)Only o
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(July 7?)2«4 GQj^MEKT PROJECTS2«4
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Amendnent Sheet Ko» 7Formation Req
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V.2Appendix 1 - p.2(July 77)FOR ADV
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V.2Appendix 2 - p*2(July 77Îtem Ho
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Appendix 3 ~ P*1(July 7?)Notes on F
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¥.2Appendix 5 - P»3(July 77)(* in
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V.2Appendix 4 ~ p*2(July 77)3* To e
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7*2Appendix 6(July 77)Land Developm
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Appendix 7 - P*2(July 77)Land DeTel
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V.2Appendix 7 «• P*4(July 7?)Lan
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Appendix 8 — p*2(July 77)Land Dev
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¥.2Appendix 9(July 77)Authorized A
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Y.2Appendix 11(July 77)Form BProm s
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¥.3.1(July 77)CHAPTER 3MAINTEMAIGE
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(Aug* 78)3*1*2 GeneralAmentoent She
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(Aug* 78)3*1*^ Surveys3«1*5 Inspec
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(Aug. 78)3*2*4 ôcediire^^ for Work
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V.3.2.7(AUK. 78)3*2.7 Correspondenc
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¥.3.4(July 77)3*4 BUS TERMINI AID
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V.3.6(July 77)3.6 TRAFFIC AIDS3.6.1
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77)3-6.4 PrpcdurC. for T., is the a
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V.3*6*7(July 773*6,7 J?l!iMI§,4]^^
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(July 77)3.8 CI^£gANCE .........OF
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77)3«8« l * Obetructigns ........
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.3*9«2 (Cont'd.)(ill) He should ad
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V.3.10.4(July 77)3*10«4 Bailey...
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¥,3.12(July 7?)3«12 MAIHTENANCE O
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¥.3*12.2 (Cont'd.)(July 77)(e) Roa
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3J4DAKGEROTJS BOULDERS(July 77)As a
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(July 77)3« '6 MAINTENANCE OF CEME
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Appendix 1 - p»2(July 77)RemarksRe
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PointV.3Appendix 2 - p.2(July 77)Lo
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V.3Appendix 3 - P«2(July 11}Remark
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Appendix 4 ~ P*2(July 77)RemarksRec
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Appendix 5 ~ P«2(July 77)ftecommen
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V.3Appendix 6 - p.2(July 77)ROAD AN
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¥.3Appendix 7 ~P»1(July 77)Gentle
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Appendix 8(July 7?)R@f * Highways (
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HIGHWAYS OFFICEAppendix 10(July 77)
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¥.3Appendix 12(July 77)REGISTERED
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EnactmentRoad Traffic OrdinanceS.15
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Enactment Subject Authority Delegat
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SIGNS JSP MABKDjaS ~ M INSPECTION R
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OA&os&~Whltc paperIE* -paper— (Re
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Appendix 19 - p«2(July 77)18. The
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7.3Appendix 1977)* »*!»8B««2a±
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Duplicate—re/tow paper—{Retaine
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CIVIL ENGINEERING MANUALVOLUME V RO
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Amendment No. V-l/92 (Jan.)CHAPTER
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4.4.2.5 Creep of concreteAmendment
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Amendment No. V-l/89 (Feb.)4.12.10
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Amendment No. V-l/89 (Feb.)4.15.6 R
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Amendment No. V-l/89 (Feb)4.17.1 Ae
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Amendment No. V-l/92 (Jan.)APPENDIC
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V.4.1Amendment No. V-l/89 (Feb.)CHA
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V.4.2Amendment No. V-l/91 (Jan.)4.2
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V.4.2.2Amendment No. V-l/91 (Jan.)4
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Amendments No. V-2/84 (March)TABLE
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V.4.2.3.3Amendment No. V-l/92 (Jan.
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Table 4.2.4a Drag Coefficient CD fo
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V.4.2.4Amendment No. V-l/92 (Jan.)4
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V.4.2.4.3.1Amendment No. V-l/92 (Ja
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GROUP2TYPE OF CONSTRUCTIONSTEEL DEC
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V.4Appendix 4.2.1 — p. 2(November
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V.4Appendix 4 . 2 . 2 : - p . 2Amen
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V.4r , Appendix 4 . 2 . 2 - p . 4 ,
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V.4Appendix 4.2.3 — p. 2Amendment
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V.4Appendix 4.2.3 - p. 4Amendment N
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V.4Appendix 4.2.4 - p. 2Amendment N
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V.4Appendix 4.2.4- p\ 4Amendment No
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V.4.2.6 (Cont'd)(Noveitiber / 1983)
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V.4.2.10Amendment No. V-l/91 . (Jan
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(1) HB vehicle within one notional
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V.4.2.10.2Amendment No. V-l/91 (Jan
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Amendment No. V-l/91 (Jan.)LoadedLe
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V.4.2.12.3(November, 1983)4.2.12.3
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7.4.1.2(November, 1983)Highway stru
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V.4.2.2Amendments ITo d V-3/854»2
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Amendments !To» V-3/85 (July)4« 2
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DIFFERENCEFROM MEAN VOIDTEMPERATURE
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V, 4*2*4*3(!fevember f 1983)4*2®4
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TABLE A 9 64.^.0SDBPACE TEMPERATURE
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4«2«6f 1983)Although the risk of
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4-2.7V.4.2.7(November, 1983)4.2.7.1
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7*4*2*8(Nbvember f 1983)Pedestrian
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4*2«12«3V*4»2*12*3(November, 198
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V.4Appendix 4«2«1 - p*(Bovember,
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V.4Appendix 4,2.2 - p.2(Kbvember, 1
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V.42, COLUMNS Appendix 4*2*2 - p*4(
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Appendix 4.2.5Amendment No* V-l/92
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V.4Appendix 4-3Amendments No* V-2/8
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TABLE 4.4.1CONDITIONS OF EXPOSURECO
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TABLE 4.4.2Characteristicstrength a
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4*4*2*4 Shrinkage(Ifevember, 1983)S
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3)oc;om•Hmm ajo mo mo(AXm mTIID o
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4«4«2*6 Coefficient of thermal ex
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¥.4.4*4M A * n x 4 (November, 1983
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Y*4*4*4*3 (Qont'd)(November, 1983)T
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Appendix &.4.1-P21000800VDO600o»0u
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TABLE 4.4.3CHEEP INVESTIGATIONDetai
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Appendix 4.4.2-P37 10 20 50 100 200
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7*4POST-TENSIONING SYST3MSAppendix
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4.9 BBABINGS (November, 1983)4*9*1
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TABLE *f.9.1ROTATIONCLASSCLASSIFICA
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AppemSix 4.9.2SCHEDULE OF BEARINGSn
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4*10 FATIGUE(November, 1983)The rec
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«(Hbveniber, 1983)4« 11 ® 6 Psî
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(Sbvember, 1983)Experience has show
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vvSHRINKAGE, CREEP ANDPRESTRESSTHER
Page 322 and 323: V«4*11*2 (Cont'd)(November, 1983)A
Page 324 and 325: W.R. Gr a ce (HK) Ltd.CCL Systems P
Page 326 and 327: Byckerhoff and Widmann AG(Bymdag Sy
Page 328 and 329: Franki PSC LtdVfong Pa & Company Lt
Page 330 and 331: V4.12Amendment No. 7-4/85 (Sept*).4
Page 332 and 333: V4.12Amendment l N Io« ¥-4/85 (Se
Page 334 and 335: 7,4*12*11*1 (Cont'd)mu • • *.
Page 336 and 337: V*4*13(November, 1983)4*13 TOUNDATI
Page 338 and 339: 4* 13» 5 JteiJIJPULJfeiSlfiLM M iB
Page 340 and 341: 7.4.13.6.2 (Cont'd)(November, 1983)
Page 342 and 343: lPARTICLE ! SIZE mm//^7f""""1"Tl>oo
Page 344 and 345: 1»3 Overturning2» Piledv.4Appendi
Page 346 and 347: Y.4*14(November, 1983)4*14 HEADBOOM
Page 348 and 349: 4,14«3 fempjeqsat;Lop, fo r. verti
Page 350 and 351: 4.15 PARAPETSV.4.15(November, 1983)
Page 352 and 353: 4*15«4 BesignV.4«15*4(ifovember,
Page 354 and 355: V.4«15*5*5 (Cbnt'd)(November, 1983
Page 356 and 357: 4«15«6 Reinfproed i .£onoret e
Page 358 and 359: 4*15.12 Sight ,digtanoea7.4*15.12(N
Page 360 and 361: TABLESTRENGTH OF BKEMFDJRCED CONCRE
Page 362 and 363: TABLE 4«15«6DIMENSIONS FOR GBDUP
Page 364 and 365: •orL^BBranMaanaI,_1 'iAODININGEDF
Page 366 and 367: 15CLFOOTWAYTOP SHAPED TOCOMPLY WITH
Page 368 and 369: 7*4Appendix 4*15*2 - p«1(November,
Page 370 and 371: ¥.4Appendix 4«15*2 - p*34* Vehicl
Page 374 and 375: ?.4»l6«2*2(Cont*d)(November, 1983
Page 376 and 377: ¥.4*16*4(Jfovember* 1983)vf' yCity
Page 378 and 379: V.4.17.2Amendments No. V-2/85 (July
Page 380 and 381: Amendments No. V-2/85 ( July )FIGUR
Page 382 and 383: a,FIGURE 4,17.5DIMENSIONS GOVERNING
Page 386 and 387: Amendments No. V-2/85 (July)Texture
Page 388 and 389: Amtndmtnis No. V-2/85 ( July)GOOD®
Page 390 and 391: Amtndmtnt* No. V-2/851 July)EXCESSI
Page 392 and 393: FIGURE 4.17.13 VISUAL INSTABILITY T
Page 394 and 395: Amendments No. V - 2 / 85 (July )SU
Page 396 and 397: ¥.4*19*4.7(November^ 983)4.7 Blanc
Page 398 and 399: 12* Clause 4*13*3V.4*19*12(November
Page 400 and 401: 17« Clause 4.15*6V*4*19*17(Kbvembe
Page 404 and 405: RHYTHMFIGURE 4.1Z17RHYMERHYTHM AND
Page 406 and 407: V. 4.17.12Amendments No. V-2/85 (Ju
Page 408 and 409: Amendments No. V-2/85 { July)FIGURE
Page 410 and 411: V.4Appendix 4.17.1 - p.lAmendments
Page 412 and 413: V.4Appendix 4.17.1 - p.3Amendments
Page 414 and 415: 4,18 OPERATIONAL CONSIDERATIONSV*4
Page 416 and 417: 4«18*3«2 Maintenance accommodatio
Page 418 and 419: v.5.1(July 77)CHAPTER 5MINOR WORKS(
Page 420 and 421: (July*??)5*5 PHEPARATION OF, MINOR
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Highways""""C ) ""DivisionCheck Lis
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Name of Soad sLocation :Sub j ect1*
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(July 77)6.1 ROAD RECORDS6*1.1 Proc
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NAME OF ROAD:—STATUSLOCATIONAPPRO
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V.6Appendix 3(July -??)Road Records
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V.7.2(July, 77)7.2 DESIGN PRINCIPLE
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?*7«2,3(Cont f d)(July, 11}Because
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V*7.2.6(Cont*d)(July, 77)Suitable s
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Ew«*•*1235678TypeofroadCDFeeder6
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.* x(July 77)7.3 DESIGN DETAILS7*3*
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(July 77)provided with a cap at the
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(Jialy 77)7.3* 1 * Edge detailsPave
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(Jialy 77)gully gratings. Because i
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¥.7.5*5(Deo.* 83)- ''"gully gratin
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Ref. : ( ) in E.G. 4/3/2? Highways
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PART BAdditional Requirements to Se
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- 5designed accordingly, rather tha
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FIG. 7.3.6.2GULLY-325 GRATINGFLEXIB
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"FfG. 7. 3.6.4 'UNTRAPPED GULLY{ WI
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a — ooDOUBLE GULLIES ATLOW POINTS
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Figure g. 7.2Relation,, between cum
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Cumulative number of commercial veh
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»uwauy200too1BMMK mmtm lillll T*
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awu200I II ,.„i MMOn strong subgr
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Weight of reinforcement CKg/irr)oOO
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Figure T. 7.12 Gully with opening g
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"I _1NOT.E : All D!MEf4SIQNS IN MIL
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STAHOA.
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STANDARD C.I. GULLY GRATINGREF DftG
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[HKPJ624H77CXOlbMfltHHDate Due
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