CONSTRUCTION METHOD STATEMENT Package A2 2 GMS Ben Luc – Long Thanh Expressway project SECTION 2 CONSTRUCTION METHOD STATEMENT GMS BEN LUC – LONG THANH EXPRESSWAY PROJECT Package A1 Km0+600 – Km7+900[.]
Package A2-2 : GMS Ben Luc – Long Thanh Expressway project SECTION 2: CONSTRUCTION METHOD STATEMENT GMS BEN LUC – LONG THANH EXPRESSWAY PROJECT Package A1: Km0+600 – Km7+900 CONTENTS PART I - GENERAL SCHEDULE I Bidder’s familiarity and understanding of construction site of the Project and Package II Electric, water and fuel supply plan III Major sources of material supply IV Major sources of workmen supply V Traffic organization and temporary traffic control Organization chart for traffic control of Contractor Traffic control method VI Project safety and security plan Safety Control Plan 1.1 Contractor’s organization chart 1.2 Safety insurance methods Security Control Plan VII Environment management plan Contractor’s organization 1.1 Contractor’s Organization Chart 1.2 Duty of charge-in staffs 1.3 Duty of environment staffs of construction teams: Environment Protection Measures Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project 2.1 Air 2.2 Water 2.3 Noise 2.4 Waste 2.5 Dangerous goods and chemical 2.6 Ecological resources, and valued sources archaeology and history 2.7 Procedures in emergency case on environment 2.8 Site layout PART II - CONSTRUCTION METHOD A General construction method I Construction site layout II Scope of works III Technical method IV General construction method Site layout Construction layout Construction sequences B Detail construction method of work items I Bridge construction method General introduction 1.1 HCM – TL Interchange bridge 1.2 NH1A Interchange bridge 1.3 Ong Thoan bridge 1.4 Phuoc LyA bridge Arrangement of construction units for bridge Page - of Package A2-2 : GMS Ben Luc – Long Thanh Expressway project Site arrangement 3.1 Site of HCM – TL Interchange bridge 3.2 Site of NH1A Interchange bridge 3.3 Site of Ong Thoan bridge 3.4 Site of Phuoc Lybridge Main construction method for Bridge 4.1 HCM – TL Interchange bridge 4.2 NH1A Interchange bridge 4.3 Ong Thoan bridge 4.4 Phuoc Lybridge Construction method of substructure (abutments, piers) 5.1 Construction method of abutment or pier on land, using foundation pit without cofferdam 5.2 Construction method of pier in water, using foundation pit with steel sheet pile (or steel pipe pile) cofferdam and bottom sealed concrete Construction method of superstructure 6.1 HCM – TL Interchange bridge 6.2 NH1A Interchange bridge 6.3 Ong Thoan bridge 6.4 Phuoc Lybridge General construction works 7.1 Construction work for concrete and reinforcement concrete 7.2 Construction works of bored pile on land 7.3 Construction of bore pile in water 7.4 Casting pre-stressed RC I girder, L=33m Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project 7.5 Port tensioned pre-stressed R.C Super T girder casting technology (l=38.3m) 7.6 Construction of slab girder according to method of casting in situ on scaffolding II Road construction Preparation work Method of embankment construction 2.1 Requirement for material 2.2 Requirements for construction equipment and labor 2.3 Common excavation and unsuitable excavation 2.4 Embankment Construction Method 2.5 Soft soil improvement 2.5.1 treatment by PVD 2.5.2 treatment by PHD 2.5.3 treatment by cement soil pile Drainage system 3.1 Requirements for material 3.2 Requirement for construction plant, equipment and labor 3.3 Construction of pipe culvert 3.4 Construction of box culvert by cast in place method 3.5 Construction of underpass by cast in place method Sub-base and Base 4.1 Requirements for material 4.2 Requirements for construction plant, equipment and labor 4.3 Construction of base course Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project Asphalt construction pavement 5.1 Requirements for material 5.2 Requirements for equipment and labor 5.3 Construction sequence of asphalt concrete 5.4 Prime coat and tack coat 5.5 Asphalt Treatment Base course at 13cm thickness 5.6 AC binder course at 7cm thickness 5.7 AC surface course at 5cm thickness 5.8 Rough Asphalt course at 3cm thickness 5.9 Double bituminous surface treatment (DBST) 5.9.1 Requirements for material 5.9.2 Requirements for plant, equipment and labor 5.9.3 Construction Special method of approach road construction Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project PART I - GENERAL SCHEDULE I Bidder’s familiarity and understanding of construction site: The GMS Ben Luc – Long Thanh expressway project is a part of the NorthSouth Expressway It is passing through Ho Chi Mnh City, Dong Nai Province and Long An Province… The Ben Luc – Long Thanh expressway is about 57.10kilometers long This link would connect Ben Luc District, Ho Chi Minh City with Long Thanh District, Dong Nai Province + The Start point: Km0+600, Ben Luc District, Ho Chi Minh City + The End point: Km57+700, Long Thanh District, Dong Nai Province Contract package A1 is from Km0+600 (Interchange HCM-TL) to Km7+900 (beginning point Contract Package A2-1), total length of this package is 7.3km The site is located at Ben Luc Distric of Long An Province and Binh Chanh District of Ho Chi Minh City Main technical properties of Project + Road classification: Expressway, Type A, class 120 + Design speed: Expressway 120km/h + Lanes: lanes (Ultimate stage: widened to lanes) + Width: Road section 25.0m; Bridge section 21.5m Topography condition In the Package A1, the Expressway runs area with topographical condition is rather relatively flat, passing through paddy fields, canals and big river (Can Giuoc river)… Geological condition Geological at area of this Package have some layer as: - Layer k1: Filling soil: mud – clay with plants - Layer k1: Top soil: Silty sand (SM) - Layer 1a: Elastic silt, greenish grey, blackish grey Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project - Layer TK1a: Sandy, silty sand (SC) - Layer 1b: Elastic silt with sand, greenish grey, blackish grey - Layer TK1: Sandly, silty sand - Layer 2a: Fat clay with sand, greenish grey, blacklish grey - Layer 2b: Lean clay with some sandy, greenish grey, blacklish grey - Layer TK2b: Sandy, silty sand - Layer 2c: Fat clay, elastic silt, greenish grey, blacklish grey - Layer TK2c: Sandy, silt sand - Layer 3a: Clayey sand, silty sand, brownish grey, yellowish grey, whitish grey - Layer TK3b: Lean clay with sandy yellowish grey, greenish grey - Layer 3b: Silty sand, clayey sand, silty clay brownish grey, yellowish grey, whitish grey - Layer TK3a: Lean clay with sandy yellowish grey, greenish grey - Layer 3c: Silty sand, well graded sand with a little grits, whitish grey - Layer TK3c: Sandy lean clay with sandy yellowish grey, greenish grey - Layer 4a: Lean clay, yellowish grey, greenish grey, yellowish grey - Layer 4b: Lean clay with some sandy, yellowish grey, greenish grey - Layer 4c: Sandy clay, yellowish grey, greenish grey - Layer TK4a: Silty clayey sand with gravel, whitish grey, greenish grey - Layer 5a: Silty, clayey sand, medium dense - Layer TK5a: Lean clay, very stiff - Layer 5b: Silty, clayey sand with some gravel - Layer TK5a: Lean sand with gravel, brownish – whitish grey, hard - Layer 6: Lean clay with sand, yellowish grey, greenish grey - Layer 7a: Strongthly – Moderately wearthered riolite stone - Layer 7b: Moderately – Slightly wearthered riolite stone Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project Scope of works: The GMS Ben Luc – Long Thanh Expressway Project Package A1 is executed in a 36 months with the main work items: - Construct new road Total length of road and bridge is 5.4km on the flat area base on the embankment works - Constructs interchange (IC HCM-TL and NH1A IC) - Construct frontage road system - Construct 04 bridges (include interchange) - Construct 10 box culverts (~230m) - Construct 02 underpasses with connection road (~50m) - Construct 01 technical cuvert (~42m) - Construct drainage pipe culverts (~180m D1500) - Construct along drainage system on line (ditch, relocated canal, manhole…) - After studying carefully Bidding Document and detailed investigation of actual site conditions, it is found that: - Technical: - Some un-complex technologies are applied to the package such as: soft soil treatment by, super T girder, bored pile 1.2m and 1.5m, cast-in-situ prestressed solid slab girder… - Construction Schedule: - The execution time is 36 months which requires the Contractor shall be in ready manner, his mobilization labor and equipment will be executed as short as possible The Contractor has powerful reserved labor force enough to further mobilize as necessary to speed up the progress - Construction conditions: - Construction conditions are relatively favorable, phase including removal of organic soil and backfilling has been completed, so access roads and Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project temporary bridges were available on the alignment, so the contractor can deploy many construction sites at the same time - The supply of materials for package is favorable, because sand borrow pits are not so much far The traffic in and out the package area is favorable - With advanced technology and technical capacity, fresh and profuse finance, as professional construction company, our Contractor firmly believes that we will excellently fulfill this package in accordance with the required schedule, good quality and high aesthetics II Electric, water and fuel supply plan: - Power sourse: - The contractor will contact with Ho Chi Minh city electric to buy power from lowvoltage stations which are available nearby the site or the contractor will build new low-voltage station to service for construction site and living - Besides, to take initiative in electric source, the contractor will reserve generators in case of public power cut - Water source for construction works and living: - The contractor will buy from the water supply factories under the area of Ho Chi Minh city and use drilled well at site and water will be processed freshly - Fuel source for construction: - The contractor will take initiative to buy at petrol stations nearby the construction site or the prestigious suppliers on the market such as Petrolimex The contractor has fuel reserve method by tank III Major sources of material supply: - Black sand (fine sand): - Fine sand is bought at the supply areas such as Tien river transported by waterway to the site - Stone material: Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project - Stone material will be taken from the following quarries: Stone for concrete, asphalt concrete, crushed stone: taken from Dong Nai, Vung Tau… and transported by waterway to the site - Yellow sand (coarse sand): - Coarse sand for asphalt concrete, cement concrete, sand blanket… taken from Dong Nai, Vung Tau… and then transported by water ways to the site - Soil for embankment: - Taken from Dong Nai, Binh Duong province, transported by waterway to the site - Bitumen: - Dense bitumen with 60/70 pen Is bought from Ho Chi Minh city, and shall be transported by truck to the site - Steel bar: - Use Viet-Australia steel, Viet-Han steel, Viet-Japan steel or Polima steel after having approved by the Employer The steel material is supplied at Ho Chi Minh city - Cement: - The cement will be bought at Ho Chi Minh city transported by waterway to the site - Geo-textile, PVDs, pre-stressed cable, bearing pad, expansion joints: - Shall be imported - Asphalt concrete: - The contractor locates 02 plants at the area of Ben Luc – Long An and then transported by truck to the site - Cement concrete: - The contractor locates 02 concrete plants at HCM-TL IC and NH1A IC - Corrugated guardrail and other materials: - The Contractor shall be bought from the suppliers in Ho Chi Minh city - Water for concrete: Page - 10 ... District, Dong Nai Province Contract package A1 is from Km0+600 (Interchange HCM-TL) to Km7+900 (beginning point Contract Package A2-1), total length of this package is 7.3km The site is located... wearthered riolite stone Page - Package A2-2 : GMS Ben Luc – Long Thanh Expressway project Scope of works: The GMS Ben Luc – Long Thanh Expressway Project Package A1 is executed in a 36 months... of this Package have some layer as: - Layer k1: Filling soil: mud – clay with plants - Layer k1: Top soil: Silty sand (SM) - Layer 1a: Elastic silt, greenish grey, blackish grey Page - Package