MS 010 road reinstatement rev2

Asphalt Binder and Wearing Courses Composition of Mixtures The bituminous material shall be composed of aggregate,filler, hydrated lime if required, and asphalt cement, materialand mix p

b) Each copy is issued to a particular person or organization If the

document is no longer required it should be returned to the relevant person;

c) It is not to be photocopied either in whole or in part Additional copies are available on request;

d) Copy holders will be automatically issued with any amendments

Responsibility for incorporating such amendments rests with the copy holder.

B.N T OAN V.G K IM

173.10 BITUMINOUS TACK COAT APPLICATION 203.11 SPREADING AND COMPACTION OF ASPHALT WEARING COURSE 20

7 SAFETY MANAGEMENT 27

APPENDICES

1 GENERAL

This method statement describes the procedures for thereconstruction and reinstatement of portions of roadways which havebeen disturbed by the works for the Existing Combined SewerImprovement and Secondary Interceptor Sewer

1.1 PURPOSE

The purpose of this document is as noted hereunder:

a) To reconstruct and reinstate base and sub-base layersb) To reconstruct and reinstate bituminous asphalt layers

1.2 TERMS OF REFERENCE

The terms of the Contract hereunder noted are applicable to

a) Contract Documents, Specifications: TechnicalSpecification Section 6 “Roads and Pavements”

b) Contract Documents, Bill of Quantities, Bill No.3.6 andBill No 4.1.6

1.3 REFERRED DRAWINGS, ETC.

The following drawings are applicable to the contents of thisdocument:

a) Contractor’s Drawing No L# - P – 5xx “RoadReinstatement Plan”

Note: The above drawings shall be developed in the excavation stage.

c) Temporary Road Occupancy for Open-cut TRO-00#-0#.

1.4 MATERIAL STANDARDS AND TESTING PROCEDURES

a) AASHTO T89; Liquid limitb) AASHTO T91; Plasticity Indexc) AASHTO T176; Sand Equivalentd) AASHTO T96; Loss by Abrasion of particles retained on

ASTM No.12 Sievee) AASHTO T180; Maximum Dry Density, Method Df) AASHTO T191; Field Density Test

g) ASTM D3; Toughnessh) AASHTO T104; Soundness Test by Sodium/Magnesium

Sulphatei) AASHTO T96; Loss by Abrasion after 100/500 Revolutionsj) AASHTO T189; Soft Fragments

k) AASHTO T112; Clay lumpsl) AASHTO M82; Standard Specification for Bituminous

Prime Coatm) AASHTO M140/M208; Standard Specification for

Bituminous Tack Coatn) AASHTO T245; Resistance to Plastic Flow of BituminousMixtures Using Marshall Apparatus

o) AASHTO T209; Theoretical Maximum Specific Gravity andDensity of Bituminous Paving Mixtures

p) AASHTO M20; Standard Specification for Asphalt Cement

2 SCOPE OF WORK

The scope of works associated with the road reinstatement works forthe Existing Combined Sewer Improvement (Including SecondaryInterceptor Sewer) is outlined in Table 2.1 For a pictorial presentation

of the works reference is also made to Appendix No.1 hereto:

Table 2.1 Combined Sewer Improvement (Including Secondary Interceptor Sewer)

Lin

e No.

3 Tran Binh Trong St. 1,298 5,430 P1, P2, P4

4 Le Hong Phong St An Duong 1,723 6,146 P2, P4

progress towards Line 6, Line 3, Line 5, Line 2 and Line 1 respectively

Red Soil Sub-base Course

Requirements for Red Soil Base Course

Liquid Limit, LL (AASHTO T89) Max 40Plasticity Index, Ip (AASHTO T91) Max 20

Ip x (% passing sieve No 200

Granular Sub-base Course

Grading Requirements for Granular Su-base Course

AASHTO Sieve Designation Percentage Passing by Weight

Liquid Limit (AASHTO T89) 25 max.Plasticity Index (AASHTO T176) 6 max

Sand Equivalent (AASHTO T176) 25 min Loss by abrasion of particles retained on

ASTM No 12 sieve (AASHTO T96) 40% max.Soaked CBR at the required density (100%

of the maximum dry density according to AASHTO T180

60% max

3.2.2 Base Course Physical Requirements of Base Course Material

Loss by sodium sulphate soundness test

5 % max

Soft fragments (AASHTO T189) 5% max

max

Grading Requirements of Base Course Material

AASHTO Sieve Designation Percentage Passing by

diluted with kerosene or cutback asphalt MC-70 conforming

to the requirements of AASTO M82

Bituminous Tack Coat

Tack coat shall be AC-20 grade asphalt cement (60-70 Pen)diluted with 25 to 30 parts per hundred of kerosene perhundred parts of asphalt cement by volume, or slow settingemulsified asphalt conforming to the requirements ofAASHTO M140 or M208 Dilution of emulsion with 1 partclean water per 1 part of emulsion shall be made ifnecessary

Asphalt Binder and Wearing Courses Composition of Mixtures

The bituminous material shall be composed of aggregate,filler, hydrated lime if required, and asphalt cement, materialand mix properties shall conform with the requirementshereunder,

Requirements for Bituminous Binder and Wearing Course

Void filled with asphalt 75-85Aggregate Grading Requirements

Sieve Designation(mm) Binder CoursePercentage Passing by WeightWearing Course

Other Requirements:

Loss by abrasion after 100

Sodium sulphate soundness loss 12%

Fine Aggregates

The fine aggregates passing 2.36 mm sieve shall have general characteristics and soundness in accordance with AASHTO M29

Filler

Mineral filler when required shall consist of limestone dust,Portland cement or other non-plastic mineral matter.Mineral filler shall be dry, free flowing, free from lumps andother objectionable material, gradation of mineral filler shallmeet the requirements hereunder,

Sieve Designation (mm) Passing Percentage by Weight

Types of Pavement

Eyc = 1530kg/cm²

5 cm Wearing Course

Crush Aggragate (Size 4 x 6 cm) Emulsified asphalt: Prime Coat 1.0 ~ 2.0 l/m² Emulsified asphalt: Tack Coat 0.2 ~ 0.7 l/m²

5 cm Binder Course

Eyc = 1780kg/cm²

Eo = 360 Kg/cm2

Emulsified asphalt: Prime Coat 1.0 ~ 2.0 l/m²

Emulsified asphalt: Tack Coat 0.2 ~ 0.7 l/m²5 cm Wearing Course

5 cm Binder Course

15 cm Base Course Crush Aggragate (Size 4 x 6 cm)

Red gravel grading

Wearing Course (t = 50) Tack Coat (0.2 ~ 0.7 l/m²) Prime Coat (1.0 ~ 2.0 l/m²)

Sub Base Course Base Course Binder Course (t = 70)

Red gravel grading

5 cm Binder Course

Eyc = 1780kg/cm²

Eo = 360 Kg/cm2

Emulsified asphalt: Prime Coat 1.0 ~ 2.0 l/m²

Emulsified asphalt: Tack Coat 0.2 ~ 0.7 l/m²5 cm Wearing Course

5 cm Binder Course

15 cm Base Course Crush Aggragate (Size 4 x 6 cm)

Red gravel grading

Wearing Course (t = 50) Tack Coat (0.2 ~ 0.7 l/m²) Prime Coat (1.0 ~ 2.0 l/m²)

Sub Base Course Base Course Binder Course (t = 70)

15 cm Granular sub-base Aggregate Grading

15 cm Sub-base Red Gravel Grading

5 cm wearing course Emulsified Asphalt, Tack Coat (max rate 0.45 L/m 2 )

5 cm binder course Emulsified Asphalt; Prime Coat (0.8-2.5 L/m 2 )

15 cm base course Crush Aggregate (size 4 x 6 cm)

15 cm Granular sub-base Aggregate Grading

15 cm Sub-base course Red Gravel Grading

Eyc = 1530kg/cm²

5 cm Wearing Course

Crush Aggragate (Size 4 x 6 cm) Emulsified asphalt: Prime Coat 1.0 ~ 2.0 l/m² Emulsified asphalt: Tack Coat 0.2 ~ 0.7 l/m²

5 cm Binder Course

Eyc = 1780kg/cm²

Eo = 360 Kg/cm2

Emulsified asphalt: Prime Coat 1.0 ~ 2.0 l/m²

Emulsified asphalt: Tack Coat 0.2 ~ 0.7 l/m²5 cm Wearing Course

5 cm Binder Course

15 cm Base Course Crush Aggragate (Size 4 x 6 cm)

Red gravel grading

Wearing Course (t = 50) Tack Coat (0.2 ~ 0.7 l/m²) Prime Coat (1.0 ~ 2.0 l/m²)

Sub Base Course Base Course Binder Course (t = 70)

Eo = 350 Kg/cm²

PAVEMENT TYPE P4

3.4 FLOWCHART

The flowchart detailed hereunder shows the basic sequence

of works for the reconstruction and reinstatement of portions

of roadways which have been disturbed by the works for theExisting Combined Sewer Improvement (Including SecondaryInterceptor Sewer)

MS-001: Initial Survey

MS-009: Existing Combined

Sewer Improvement

Preparatory Works - Survey check of elevations of adjacent undisturbed pavement,

marking of layer thickness

- Mobilization of Equipments

-

Sub-grade Preparation

Wearing Course (t=50) Emulsified Asphalt, Tack Coat (max rate 0.45 L/m 2 )

Binder Course (t=70) Emulsified Asphalt, Prime Coat (0.8-2.5 L/m 2 )

Base Course (t=260, Aggregate size: 20-40)

Sub-base course (t=150, Aggregate size: 40-60)

Spreading and Compaction of Base Course Layer

Prime Coat Application and Asphalt Paving (Binder Course)

Tack Coat Application and Asphalt Paving (Wearing Course)

Restoration of Paint Markings

Completion and Acceptance of Works

3.5 PREPARATORY WORKS

3.5.1 Material Approval

All necessary material approval required to execute theconstruction work shall be obtained by theContractor

3.5.2 Temporary Fencing and Traffic Maintenance

Temporary fencing and traffic maintenance shall be inaccordance with sub-clause 3.4.4 of MS-009-01: MethodStatement for the Existing Combined Sewer Improvement(Including Secondary Interceptor Sewer) in general.Temporary Road Occupancy and Traffic Diversion (TRO-

003 to TRO-008) shall also be applicable to the roadreinstatement works

3.5.3 Survey Works

Prior to commencement of road reinstatement works,Contractor shall survey check the elevation of theadjacent undisturbed pavement and the prepared sub-grade layer The required layer thickness of sub-base,base course and asphalt layers shall be marked using aspray paint or markers visible during spreading andcompaction works A temporary peg or a piece of rebarshall be driven to both ends of the section to be markedfor the different thickness layers of the pavementstructure The mark shall be protected as it will serve asthe guide for monitoring layer thickness Thickness anddesign of pavement structure shall conform to Section 3,Sub-clause 3.3 of this document (Pavement Types)

3.5.4 Mobilization of Equipments

The road occupied by the Contractor to carry out theworks has a limited area, the area will be utilized for stockpiling of base and sub-base materials, and operation ofconstruction equipments

List of equipments to be mobilized is shown in Section 5Sub-Clause 5.3 and Equipment Arrangement is shown inAppendix 2

 The trimmed surface shall be compacted by avibratory roller having a static load of 8 kg/cm.Trimming shall be carried out using a Grader/Self –motive leveling vehicle, please refer sub-clause 5.3 forthe list of machinery and equipment.

 The finished surface shall be checked by passing an

8-10 ton smooth wheeled steel roller; the sub-gradelayer shall be replaced by sub-base material if anydeformation or springing effect is observed duringrolling

 The finished surface of the sub-grade shall be checked

by survey to establish the thickness of the succeedinglayers above the sub-grade as described in section 3,sub-clause 3.2.1 of this document

3.7 SPREADING AND COMPACTION OF SUB-BASE MATERIALS

Sub-base course construction shall consist of theconstruction of two layers comprising of:

 Red Soil Sub-Base and

 Granular Sub-Base

Thickness of sub-base courses for the various types ofroads varies and is shown on sub-clause 3.3 of thisdocument For low-traffic roads (Pavement Type P4), thegranular sub-base course is omitted

3.7.1 Placing and Spreading

The sub-base layer shall be placed and spread in suchmanner that the resulting compacted thickness shall notexceed 150 mm Layers greater than 150 mm shall bespread and compacted in two layers of approximatelyequal thickness

Sub-base material shall be placed uniformly on theprepared sub-grade in a quantity which will provide therequired compacted thickness The previously laid layershall be compacted before the succeeding layer is placed.The finished layer shall be equal to or slightly greaterthan the nominal thickness of sub-base

3.7.2 Compaction

The moisture content of sub-base material shall beadjusted before compaction by watering using sprinklersmounted on trucks if the material is to dry or by drying out

if the material is too wet in order to obtain the requiredcompaction

Immediately after each layer of the sub-base has beenspread, the full width shall be compacted Compactionshall progress gradually from the sides to the centre,parallel to the centerline of the road, and shall continueuntil the whole surface has been compacted

All irregularities or depressions that develop shall becorrected by loosening material at these places andadding or removing material until the surface is smoothand uniform

The sub-base shall be compacted using a vibratory rollerand locations that cannot be accessed by compactionequipment, the sub-base material shall be compactedthoroughly with tampers or plate compactors

Compaction shall be checked and comply with therequirements as per Appendix 4 hereof.

3.8 SPREADING AND COMPACTION OF BASE MATERIALS

Thickness of base course layer for the various types ofroads varies and is shown in Section 3, Sub-clause 3.3 ofthis document

Proportion of the coarse and fine aggregate material ofbase course shall be proposed under separate cover, apart of material application

The base course layer shall be compacted in layers notgreater than 150 mm, all layers exceeding 150 mm shall

be spread and compacted in approximately two equallayers

For Pavement Type P1 and Type P4 where the requiredthickness of base course is greater than 150 mm, shall

be spread and compacted in two layers of approximatelyequal thickness, and the maximum compactedthickness of any one layer shall not exceed 150 mm.Pavement Type P2 shall be spread and compacted in onelayer

Spreading and compaction method shall be the same assub-base course material addressed in Sub-clause 3.7.1and 3.7.2 of this document

3.9 BITUMINOUS PRIME COAT APPLICATION

3.9.1 Surface Preparation before Prime Coating

Before applying the asphalt material all loose dirt andother material shall be removed from the surface using

a blower from air compressor Such cleaning shallcontinue until the entire surface shows a pattern of

exposed large particles well wedged together and freefrom dust A light application of water shall be madejust before the application of prime coat No applicationshall be made during wet weather.

3.9.2 Application

Bituminous prime coat materials shall be applied bymeans of a pressure distributor, at a temperaturebetween 40.5ºC and 85ºC in accordance to Article (b) ofsub-clause 6.6.4 of Section 6, Volume 2 “Specifications” The rate of application of the liquid asphalt shall be from0.8 to 2.5 liter per square meter, the exact rate shall be1.5 L/m2 as instructed by the Engineer in theirResponse to Approval Request ERA/D-106 under cover

of letter Ref No PCI/WEI/D-SO/07-1833 dated May 15,2007; Any excess shall be blotted with sand or removed.All areas inaccessible to the distributor shall be sprayedmanually using the device for hand spraying Structuresand trees adjacent to the area being treated shall beprotected using plastic sheets or burlap to prevent frombeing spattered or marred

The prime coat shall be left undisturbed for at least 24hours and shall not be opened to traffic until the primecoat has penetrated and cured sufficiently so that it willnot be picked up by the wheels of equipments passinginside the construction area The primed area shall bemaintained until paving of the binder course

3.10 SPREADING AND COMPACTION OF ASPHALT BINDER COURSE

3.10.1 Preparation of Sub-base

Twenty-four (24) to forty-eight (48) hours after application

of the prime coat on the sub-base layer, when it hassufficiently dried, it shall be broomed All loose materialshall be removed from the surface Uneven cut on theadjacent undisturbed pavement shall be cutperpendicularly to the sub-base layer using a concretecutter The cut shall also be in a straight line so that voids

between the adjacent and new pavement layer can beavoided The perpendicular side of the adjacent pavementshall be sprayed with tack coat to bond the old and newasphalt pavement.

3.10.2 Placement and Spreading

Sensors of pavers, leveling guide or grade guide (stringline) shall be constructed and installed at the sides of theadjacent pavement prior to placement, the string guideshould be located and tightened far enough ahead of thepaver to prevent any delay, care shall be taken not toallow the string to stretch and loosen The string lineguide shall also be checked by both the Site Engineer andthe Subcontractors representative prior to placing andspreading

The compaction factor shall be determined to attain therequired compacted thickness

The surface prior to placement shall be free from loosematerials from previous construction work, especiallyfrom the laying of base course material, and spraying ofbituminous prime coat and these shall be checked by theSite Engineer

The arriving mixture delivery shall have a temperature between 120°C to 150°C Spreading temperature shall not be less than 107º C.

The mixture shall be laid upon an approved surface which

is thoroughly dry and in suitable condition, and only whenweather conditions are fair

Upon arrival the mixture shall be dumped into anapproved bituminous paver, immediately spread to thefull width required, and struck off in a uniform layer atsuch thickness that, when work is completed, the layerwill have the required thickness conforming to thespecified grade and surface profile

The bituminous paver shall be a self-contained, powerpropelled unit with an activated screed or strike-offassembly heated as necessary The paver shall becapable of spreading and finishing courses of

bituminous plant mix material of the specified thickness,smoothness and grade, and shall also be equipped with anautomatic line and grade controlling device.

During spreading, as soon as the first load has beenspread, the texture of the unrolled surface should bechecked to determine its uniformity Site Engineer shallcheck the mix temperature before unloading in the paverhopper

Care shall be taken so as not to misalign level guide andwidth guide during spreading

The adjustment of screed, tamping bars or vibrators,spreading screws, hopper feed and other adjustmentpoints should be checked frequently to assure uniformspreading of the mix to proper line and grade A straightedge shall be used to determine whether or not a smoothsurface is being obtained

Segregation of materials will not be permitted Ifsegregation should occur, the spreading operation shall

be stopped immediately and not to resume spreadingoperations until the cause is determined and corrected.Asphalt mix which clings to the sides of the hopper should

be continually loosened and pushed into the active mix

In areas where use of mechanical spreading and finishingequipment is impractical because of irregularities orunavoidable obstacles, the mixture may be hand-spreadusing steel rake and deposited to the place using a wheelborrow or shovel

3.10.3 Compaction

Rolling shall begin as soon as the mixture can bear theroller without undue displacement or hair cracking, andshall start from the centre of the first strip and continuetoward either edge On subsequent strips, rolling shallstart from the edge adjacent to the previously laid

material and continue toward the opposite edge (Please

refer to Appendix No 2 for the equipment arrangement)

The speed of roller shall, at all times, be slow enough so

as to avoid displacement of the hot mixture Anydisplacement occurring as a result of reversing thedirection of the roller, or from any other cause, shall be

corrected at once by rakes and by applying freshmixture where needed The number of passes and speed

of roller shall be as shown hereunder,

Roller Type Roller Weight Speed No of Passes

Breakdown roller (steel roller) 3-5 tons 2-3km/hr 2-3Compact roller

(pneumatic tire) 12-16 tons 3-5km/hr 8-10Finish Roller

(steel roller) 8-10 tons 4-6km/hr 2-3

To prevent adhesion of asphalt mixture to the rollerswheel, water shall be sprayed to the wheel insuitable amount

Rolling shall continue until all roller marks are eliminated,the surface is of uniform texture and true to grade andcross section In areas not accessible to the roller themixture shall be thoroughly compacted with mechanicaltampers

Any mixture which becomes loose and broken,contaminated with dirt, or in any way defective shall beremoved and replaced with fresh hot mixture andimmediately compacted to conform to the surroundingareas Skin patching will not be allowed

Traffic shall not pass over the binder course until it hasbeen thoroughly compacted as specified, andallowed to cool to atmospheric temperature

3.10.4 Trimming and Clean-up

Placing of the bituminous mixture shall be as continuous

as possible Rollers shall not pass over the unprotectedand freshly laid mixture

Transverse joints shall be formed by cutting back

on the previous run to expose the full depth of the course A brush coat of bituminous tack coat material

shall be used on contact surfaces of transverse joints justbefore additional mixture is placed against thepreviously rolled material

The exposed edges of the completed pavement shall becut true to the required lines Material trimmed from the

edges and any other discarded or rejected bituminousmixture shall be removed from the roadway anddisposed of in accordance with HCM City Regulation andEnvironmental Plan

3.11 BITUMINOUS TACK COAT APPLICATION

Immediately after cleaning the binder course surface,asphaltic material shall be applied by means of adistributor, and shall not exceed 0.45 liter per squaremeter Tack coat shall be applied to dry surface only Inthe event that the surface is to wet, power blower (aircompressor) can be used to dry up the wet surface

The surfaces of structures and trees adjacent to theareas being treated shall be protected by means ofplastic sheets or burlap as to prevent their beingspattered or marred No asphaltic material shall bedischarged into pavement the gutter

The wearing course shall not be placed over the tackcoat until it is in a proper condition of tackiness toreceive it Tack coat shall be applied 24 hours advance ofsurface course placement to obtain proper condition oftackiness Until the surface course is placed, the tackcoat shall be protected from damage by limiting vehiclesfrom passing through the tack coat applied area

3.12 SPREADING AND COMPACTION OF ASPHALT WEARING COURSE

Prior to placing of the wearing course layer, Survey shallcheck and confirm elevations so that the requiredthickness is met Finished elevation of the reinstatedpavement shall follow and conform to the adjacentundisturbed pavement

The mixture shall be spread at a temperature of notless than 107ºC and all initial rolling shall be doneimmediately after spreading

The mixture shall not be placed on any wet surface orwhen weather conditions will otherwise prevent its properhandling and finishing

Screed action shall include any cutting, crowning orother practical action which is effective on the mixture

without tearing, shoving or gouging, and whichproduces a surface texture of uniform appearance Thescreed shall be adjusted to the required section andthickness The paver shall be provided with either a fullwidth roller or tamper or other suitable compactingdevice Pavers that leave ridges, indentations or othermarks in the surface that cannot be eliminated byrolling or prevented by adjustment in operation shall not

be used

Where a course previously laid is joined to a course to belaid later, the first course shall be cut back and paintedwith tack coat

The mix shall be compacted immediately after placing.Initial rolling with a tandem steel roller shall follow thepaver as closely as possible Immediately following thesealing of the longitudinal joints, rolling shall commence

at the outside edges and progress towards thecenterline Rolling with a pneumatic-tired roller shall bedone immediately behind the initial rolling In areas toosmall for the roller, a vibrating plate compactor or handtamper shall be used to achieve thorough compaction Any mixture which becomes loose and broken,contaminated with dirt, or in any way defective shall beremoved and replaced with fresh hot mixture andimmediately compacted to conform to the surroundingareas Skin patching will not be allowed

Traffic shall not pass over the wearing course until it hasbeen thoroughly compacted as specified, andallowed to cool to atmospheric temperature

Equipments, equipment arrangement shall be as shown in Appendix 2, number of passes, and equipment speed shall be the same as for binder course in sub-clause 3.10.3 of this document.

3.13 CONSTRUCTION JOINTS FOR ASPHALT BINDER AND WEARING

COURSE

LONGITUDINAL JOINTS Longitudinal joints for binder andwearing course is located between the adjacentpavement and the new pavement Since it is the jointing

of the old and new pavement the adjacent pavementshall be cut perpendicularly and sprayed with tack coat

24 hours before paving for proper bonding No furtherjoint procedure is required.

TRANSVERSE JOINTS Transverse joints for the binder

course shall be located 1.5 meters before the end of roadsegment and wearing course shall be located 2 metersbefore the end of the road segment Timber shall be used

as asphalt joint stopper The end joint prior to paving ofthe next segment shall be cut perpendicularly and

sprayed with tack coat Please refer to Appendix 3

(Construction Joints) for pictorial presentation oftransverse joint

3.14 ROAD MARKINGS

Road markings shall be carried out in accordance with theVietnam Standards, and shall follow the alignment of theexisting pavement structure The roadmarking shall bepart of Material Application for Road Reinstatement andwill be submitted under separate cover

Application of road marking shall be carried out 24 hoursafter the spreading and compaction of the wearingcourse

3.15 TEST AND INSPECTION PRIOR TO USAGE

Completed work stage shall be subject to inspection andshall comply with the construction tolerances outlined inAppendix 6 “Inspection and test Plan for CompletedWorks” It shall be part of the items for checking of theHandover of completed works

Government Decree No 209 form, form No 7 “ Minutes

on Acceptance Inspection of The Work Items to be Put IntoUse” in Appendix 7, shall be the final acceptance form to

be completed and shall be certified by the Engineer andthe East-West Highway and Water Environment ProjectManagement Unit of Ho Chi Minh City

The areas approved in form No 7 shall be regarded as

“completed” and be opened for usage.

4 SCHEDULE

Y Uchida

Coordination Officer

Construction Manager

K Yoshida

5.2 SUPPLIERS / SUB-CONTRACTOR

The list of relevant material suppliers / subcontractor shall

be informed by the Contractor under separate cover

5.3 LIST OF MACHINERY / EQUIPMENT

1 Survey Equipment Total Station & Level 1 No / work area

2 Thermometer 180°C -200°C 2 Nos / work area

3 Asphalt Cutter 2.4 HP 1 No / work area

4 Hand Breaker N / A 2 Nos / work area

5 Generator 50-125 KVA 1 No / work area

6 Plate Compactor 5.0 HP 2 No / work area

7 Dump Truck 10 MTS 1 No / work area

8 Pneumatic Tire Roller 8 MTS 1 No / work area

9 Vibratory Steel Roller 7 MTS 1 No / work area

10 Finish Steel Roller 8-12 MTS 1 No / work area

11 Shoveller/Bulldozer 2 m3 1 No / work area

12 Asphalt Spreader 60 MTS/hour 1 No / work area

13 Grader/Self –motive leveling

1 No / work area

14 Water Truck 12 m3 1 No / work area

15 Tack coat spreader adjustable 1 No / work area

16 Prime coat spreader adjustable 1 No / work area

17

Paint Boiling and spreading

machine (Thermoplastic painting

machine)

23

Miscellaneous small tools i.e., hand spreading tools, shovel, steel rake, measuring tools

Various As required

Note: Estimated for 700 m 2 / work area

6 QUALITY CONTROL

All works associated with the Road Reinstatement / Reconstruction

of portions of roadways which have been disturbed by the worksfor the Existing Combined Sewer Improvement and Secondary

Interceptor Sewer shall comply with the requirements of themanagement System and Quality Control Plan.

6.1 INSPECTION AND TEST PLAN

This plan deals with the material testing and inspection aswell as of construction work inspections, including outline

of the frequency of inspection and testing It alsoestablishes the work inspections to be carried outinternally by the Contractor and joint inspections with theEngineer

Material Quality

All materials for the Road Reinstatement works shall befrom approved source supported by supplier’s certificateand testing reports Material requirements is summarized

in Section 3, Sub-clause 3.2 of this document testingfrequencies and Inspection and Test Plan for materials can

be found in Appendix No 4 and No.5

Quality of Completed Works

Completed work stage shall be subject to inspection andshall comply with the construction tolerances outlinedAppendix 6

Inspection and Test Plan for Materials and Site Works

Appendices No 4, 5, 6, 7 hereto outlines, respectively,

the Inspection and Test Plan applicable to the RoadReinstatement Works of portions of roadways which havebeen disturbed by the works for the Existing CombinedSewer Improvement and Secondary Interceptor Sewer

Appendix No.4 hereto nominates the inspection steps to

be implemented in order to ensure that the requiredmaterial quality, substantiating records for sub-base andbase material are maintained

Appendix No.5 hereto nominates the inspection steps to

be implemented in order to ensure that the requiredmaterial quality, substantiating records for bituminousprime coat, tack coat, binder course and wearing coursematerials are maintained

Appendix No.6 hereto nominates the inspection steps to

be implemented in order to ensure that the requiredquality of completed works, and substantiating aremaintained

Appendix No.7 details the inspection records which are

to be completed, maintained and filed on site

From Government Decree No 209 three forms areapplicable to the Road Reinstatement Works Forms 4A,5A, and 7

 Form 4A – to be utilized for the completion of eachspecific item of work such as spreading andcompaction works of asphalt, base course and sub-base course

 Form 5A – for the completion of all work in oneparticular set

 Form 7 – one completion form for the totalcompletion of construction work for Line 1 to 6

6.2 Non-Conformance Report

During the execution of the works, if a written complaint,via Site Instruction or similar, is received from theEngineer or the Employer, and the complaint is justifiedthen action will be initiated by the Contractor A non-conformance report shall be completed and a recordthereof shall be retained by the Contractor

7 SAFETY MANAGEMENT

All works described herein shall comply with the requirements ofthe approved Occupation, Health, Safety and Rehabilitation Planand Project Safety Plan

Specific Safety Considerations:

a) Working under heavy traffic conditions

Diversion schemes shall be provided in accordance with therequirements of DTPW office and the regulations in the Decision

of The People’s Committee of HCMC 47/2005/QD-UB dated 24March 2005.

Proper Illumination / lights shall be provided if the works areexecuted at night Watchmen and traffic controllers (if required)shall wear reflective clothing

b) All workers shall wear appropriate PPE, i.e helmet, shoes,gloves, etc as appropriate and deemed necessary inaccordance with PPE matrix contained within the Project SafetyPlan

c) First aid facilities shall be available

Appendix No.8 hereto includes the completed Safety Risk

Assessment for the Road Reinstatement works

8 ENVIRONMENTAL MANAGEMENT

All works described herein shall comply with the requirements of the approved Environmental Management Plan

Specific Environmental Considerations: Good housekeeping

shall be implemented i.e management of waste and the like

Appendix No 9 hereto includes the completed Environmental

Risk Assessment for the “Road Reinstatement Works”

APPENDICES

A PPENDIX 2

C ONSTRUCTION S EQUENCE AND

embankment the part of road after laid subbase layer and rolled

Steel wheel roller 10 ton

transporting gravel to the site

method of laying sub-base, BASE layer

Compaction