PORT WORKS DESIGN MANUAL PART 3 Guide To - The University ...

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101.2 Definition, Symbols and ReferencesThe definitions of terms and meanings of symbols for the purpose of this part of the Manualare given in the Glossary of Terms and Glossary of Symbols at the end of this document.The titles of publications referred to in this part of the Manual are listed in the referencesection. The reader should consult these original publications for more detailed coverage ofparticular aspects. For Works Bureau Technical Circulars (WBTC) which are updatedregularly, reference should be made to their latest issues.
112.2.1 GeneralThis chapter gives comments and guidance on the design of reclamation covering suchaspects as the reclamation layout, formation level, reclamation methods, fill, treatment of fill,environmental impacts, drainage impacts and so forth.2.2 Purpose of ReclamationReclamation may generally be carried out:® To provide land for essential major transport infrastructure in order to avoidrouting major highways through existing developed areas.® To provide land for housing, sites for additional community facilities andpublic open spaces.* To provide land for port and industrial uses.• To eliminate areas of badly polluted water and improve hydraulic conditions byrearranging the coastline.The design of reclamation should fulfil the requirements of the planned use and programmefor development, particularly with regard to time and settlement characteristics of thereclamation and foundation materials. The timing of future development, location of futureroads, drains, buildings and areas of open space are of particular importance. Sometimes itmay be necessary to design reclamation for the main initial purpose of beneficial reuse ofpublic fill. In such circumstances, future land use and development is likely to be knownonly in general terms at the time of reclamation design. It is relatively common for planneduse and development of reclamation to change with time, due to changing needs, and accountshould be taken of this where possible by designing reclamation for flexibility of use.2.3 Site InvestigationReclamation projects are usually extensive, and problems during or after the construction,may carry major financial implications.To enable the designer to devise the mostappropriate design, it is essential that site investigation is carried out prior to the design ofreclamation. In addition to normal geotechnical investigations required for marine works,
Page 3 and 4: PORT WORKS DESIGN MANUALPART 3Guide
Page 5 and 6: FOREWORDThe Port Works Design Manua
Page 7 and 8: CONTENTSTITLE PAGE - !FOREWORD 3CON
Page 9: PageNo.5.3.3 Verification of Settle
Page 14 and 15: 12the investigations may need to co
Page 16 and 17: 14consequences of adopting a partic
Page 18 and 19: 16(3) Installation of vertical drai
Page 20 and 21: 18The remaining layer of marine or
Page 22 and 23: 20• The rate of supply of public
Page 24 and 25: 22the shortage of public filling ca
Page 26 and 27: 24Considerations when planning the
Page 28 and 29: 262.10 Environmental ImpactsAll rec
Page 31 and 32: 293.3.1 GeneralThe reclamation sequ
Page 33 and 34: 31requires checking of the equilibr
Page 35 and 36: 33(2) Detailed Stability AnalysisTh
Page 37 and 38: 3.4 WorksIf, despite all the precau
Page 39 and 40: 374.4.1 GeneralThis chapter discuss
Page 41 and 42: 3943.2 due toThe ultimate primary c
Page 43 and 44: 41where S pt(residml) = Residual se
Page 45 and 46: Design of surcharge preloading gene
Page 47 and 48: 45H = Fill thickness.a = Logarithmi
Page 49: 47The calculation of residual settl
Page 52 and 53: 50For monitoring of pore pressure d
Page 54 and 55: 525.3.2 of FillThis section discuss
Page 56 and 57: 54the availability of frequent moni
Page 58 and 59: 56reduce settlement problems. Howev
Page 61 and 62: 59REFERENCESAsaoka, A (1978). Obser
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61FIGURES
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65(1) Geotextile-\I,- i i i i i , ,
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67Figure 5 - Method of Calculation
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69timet + 120Piezometer installed a
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71Slope >1Required pause in fill pl
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73APPENDIX APREFABRICATED BAND DRAI
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76List of ASTMD4491-92: Standard Te
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79CONTENTSTITLE PAGE 77CONTENTS 79B
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82t = Time from load application.c
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84Hansbo, S. (1981).Consolidation o
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87CONTENTSTITLE PAGE 85CONTENTS 87C
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89C OF BY ASAOKA'S METHODC.IGeneral
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91OFFigureNo.PageNo.C1 Asaoka's Gra
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94SiFinal settlementPlacement of. a
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97CONTENTSTITLE PAGE 95CONTENTS 97D
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1000.3(8.9)(3 2 )(1. 2) - 2.8836L e
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102Vertical drains dataTypeSpacingP
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104The final primary consolidation
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106The initial effective stress at
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108Table D2.6m0123M0.5711.5712.5713
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110Effective stress increment at en
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112(3) Settlement due to secondary
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114The value ofF(n) in Example D.2
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116
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118CD~5COCOCDCLCD20 -14.9Required p
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120
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122state value.Mud wave. Excessive
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124
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126dd'D ree 0e maxe minFHI pK aLeng
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128
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X1S1SD112HK 627.5 P83Port works des
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