Correct method of consolidating concrete

20-Oct-2020 09:11

The Project Manager shall be responsible for the ensuring that the Project Quality plan and the Inspection and Testing procedures, the method the statement, HSE safety, and all contractual documentation are maintained up to date and accessible to all parties. Project Manager Responsible for accomplishing the stated project objectives which include creating clear and attainable project objectives, building the project requirements, and managing the constraints of the project management triangle, which is cost, time, scope, and quality. Site Engineer Supervise operations in accordance with the approved Method Statement, shop drawings, specifications, material submittals and schedules to achieve the acceptance of the project deliverables. Construction Manager Responsible for overall construction activities ensuring that all method statement, quality and safety procedures are implemented and required approval permits are obtained. The Plant Manager shall ensure availability of flaked ice and the like in sufficient quantities for the scheduled concrete works and the backup arrangements are secure. Reinforcement shall be either delivered cut and bend by the approved subcontractor in compliance with approved shop drawing and Bar Bending Schedule or it may be cold-bent at the site. Fabricated reinforcing bars will be delivered bundled, tagged and marked. All temperature values are in degree centigrade unless specified. References Information sources may include, but not be limited to, verbal or written and graphical instructions, signage, work schedules/ drawings/specifications, work bulletins, charts and hand sketches, and Material Safety Data Sheets (MSDS). The Plant Manager shall ensure that aggregates and other constituents material stored with appropriate shading and other measures implemented as required by this method statement and similar is in the place for back up arrangements. (Or this item number 2 will be based upon the steel requirement stated from the Project Specifications) 3.

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Concrete Repair Materials V.1 General V.2 Reinforcement V.2.1 Material Handling and Reception V.2.2 Mechanical Splices V.2.3 Sampling and Testing V.2.4 Reinforcement Fabrication and Placement V.3 Formwork V.3.1 General Criteria V.3.2 Material and Class of Finish V.3.3 Formwork Execution V.3.4 Formwork Removal V.3.5 Dimensional Tolerances V.3.6 Early Loading V.4 Concrete Transport V.5 Concrete Casting V.5.1 Preparation for Pour V.5.2 Placing of Concrete V.5.2.1 General V.5.2.2 Foundation Concreting V. General V. Procedure of Work V.5.2.3 Concreting of Retaining Wall and Vertical Structures V.5.2.4 Mass Concreting V.5.2.5 Roof Slab V.5.3 Joints in the Concrete: V.5.3.1 General V.5.3.2 Construction Joint V.5.3.3 Movement Joints V.5.3.4 Construction of Joints V. Forming Joints V. Forming Grooves V. Protection of Grooves V. Sealing Joints V. Tolerances V.6 Compaction V.7 Curing V.8 Hot Weather Concreting V.8.1 General V.8.2 Potential Problems Associated with Concreting in Hot Weather V.8.2.1 Plastic Concrete V.8.2.2 Hardened Concrete V.8.2.3 Avoiding Potential Problems V.8.3 Concrete Placing and Curing V.8.4 Controlling Reducing Temperature of Constituent Materials V.8.4.1 Aggregates V.8.4.2 Water V.8.4.3 Cement V.8.5 Reducing Heat Gain V.9 Precast Concrete Works V.9.1 General V.9.2 Testing V.9.3 Delivery, Storage & Handling V.9.4 Forming V.9.5 Erection V.10 Sampling and Testing V.10.1 Slump Test V.10.2 Concrete Strength Test Sampling V.10.3 Testing of Concrete Cube Samples V.11 Concrete Repair V.11.1 General V.11.2 Identification of Defects V.11.2.1 Crazing V.11.2.2 Blowholes (re-profiling 0 to 10 mm deep) V.11.2.3 Form Tie Rod / Bolt Holes and Voids V.11.2.4 Honeycomb with rebar not exposed and () 50 mm deep V.11.2.6 Concrete repair work in generally re-profiling over large area where thickness are more than 3mm V.11.2.7 Cold Joints V.11.2.8 Dry / Damp cracks, early thermal contraction cracks, drying shrinkage cracks on external wall and side part of base slab (equal or greater than 0.20mm) V.11.2.9 Non- structural cracks, e.g. List of Appendices APPENDIX A: Drawings, Diagrams, and Maps APPENDIX B: Risk Assessment APPENDIX C: Permit & Licensing Requirements Permit to Work APPENDIX D: Inspection & Testing Plan (ITP) APPENDIX E: QC Formats APPENDIX F: Material Safety Data Sheet & Test Certificates of Materials APPENDIX G: Approved Material Submittals ). to determine the timing to implement the control measures identified in this Method statement, and liaise with the Construction & QA/QC sections accordingly. Concrete will be checked according to the tolerances for slump, temperature, strength and durability referring to approved mix design only. Verticality and post concrete dimension check is a must for all elements. Use approved material and store in a dry place, away from the ground, moisture, dirt and other contaminants. Store Cement and other cementations materials away from moisture above the ground. The material shall be stored and used following the manufacturer’s instruction. Setting out of work shall be done by surveyor either for concrete or for any activity including formwork which confirms the shape, size and level of the structural element. All steel reinforcement to be used shall be from an approved manufacturer. The reinforcing steel shall be of type 2 high yield deformed bars grade B500B according to BS 4405 A2/2009 and shall be cut and bent in accordance with BS 8666: 2005.

Plant and Equipment Transit Mixers and Accessories Concrete Pumps Concrete Vibrators Poker or Needle Vibrators Plate / Surface Vibrators Wooden Float Steel or Plastic finishing Float Power Trowel Mobile Crane Concrete Bucket Air Compressor Leica TS 15m Total Station Leica NA2 Automatic Level Shoring / Formwork Material 2. The tag will show the manufacturer’s test number and lot number and other applicable data that will identify the material with the certificate issued for that lot of steel. The fabricator will furnish three copies of a certification which shows the batch number or numbers from which each size of bar in the shipment was fabricated. Mechanical splices shall comply with EN 1992-1-1 or BS 8666, and shall be used as and where indicated on the Drawings. Details of mechanical splices shall be submitted to the Engineer for approval.

List of Subcontractors Subcontractor/Suppliers Ready Mix Supplier – xxxxx ( 1. The reinforcement shall be covered to ensure protection from wind-blown dust, condensation and other deleterious materials. On delivery, bars in each lot will be legibly tagged by the fabricator.

Ensure proper safety guarding of surveying equipment. They will be required to follow installed safety signs, observe barricades and use opens. Contractor Safety Team will perform hazard risk analysis by identifying all steps, hazards identified in those steps, with a focus on the relationship between the work task, the tools and the work environment. This document applies to all concrete foundation, below ground structure, slab on grade, column, beam, retaining wall, slabs, raft concrete works, precast concrete work, concrete repair work and any structural work where concreting is required.

Ensure validity and serial number of calibration certificates is available and posted in the survey equipment. The equipment check for safety shall be recorded/ documented during the daily Safety Awareness Meeting. Traffic safety will be discussed to emphasize these meetings. Each worker will be instructed to follow specific safety requirements related to his trade. Specific details of the work to be performed along with the use of personal protective equipment. will be placed at approximately 25m from the last advanced signs. Buffer zones and working areas will be cordoned with highly reflective traffic cones/barriers to separate the survey team and workers from the main traffic flow. “One Way traffic ahead” signboards would be placed 90 m ahead of working area in order to notify incoming drivers of the new road layout. Traffic Controllers would be deployed on both sides in order to control “One-way traffic”. Photographs would be taken for information to maintain traffic safety record-keeping. Radio Communication system would be used where normal communication is impossible. After completion of the work, safety cones and barricades have to be removed accordingly. Contractor shall ensure that dumping of excess concrete on-site is not permitted and no concrete wash-out must take place on site. The Method Statement shall be made readily available to all personnel involved in the specific work activity and shall be posted at the work activity location.

HSE Officer Ensure enforcement of safety procedures in accordance with the approved HSE Plan.