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Correct method of consolidating concrete

Equipment Operator The only authorized person to operate any equipment to be used in the project. shall conform to Approved Shop Drawings of the particular structure.

To maintain the records of all surveying equipment handled. Assist Surveyors in taking measurements, record measurements manually or electronically, and peg out boundaries. After identifying uncontrolled hazards; Contractor will take steps to eliminate or reduce them to an acceptable risk level. General contractual Safety, Health and Environmental requirements. Roles of the contractor, subcontractors, authority representatives and all project workers. The concrete works shall be carried out fully in compliance with the Project Specifications All dimensions, levels, construction joints, movement joints, reinforcement dimensions, reinforcement covers, reinforcement splicing, installation of mechanical splices, etc.

Helpers /Laborers Perform tasks involving physical labor at building, assists the skilled workers, remove trash, and residual building debris. If any field test indicates that the concrete may be deficient, the QC will report this to the concerned Consultant representative at the location immediately.

When a representative gauge length assembly comprising reinforcement of the diameter, grade and profile to be used, and a coupler of precise type to be used, is tested in tension, the permanent elongation after loading to 0.6fy shall not exceed 0.1mm and, b. shrinkage cracks or surface cracks equal or greater than ( 1. The purpose of this Method Statement is to establish the rules to be applied during all the concrete works (including in-situ concrete, precast concrete and concrete repair works) starting from storage of materials, reinforcement work, formwork, transportation of material, inspection, installation, testing, concrete pouring, concrete curing and concrete repair to ensure that all the concrete works are properly executed in accordance with Project Specifications and applicable standards. Definitions SE Site Engineer QC Quality Control Engineer SF Site Foreman PM Project Manager SA Site Agent representative from the Lab HSE Plan Health, Safety and Environment Plan Note: All dimensions are in mm unless specified. The Plant Manager shall ensure that all necessary equipment at the batching plant for cooling the aggregates or chilling water is maintained in good condition and back up plants are similarly maintained. The expired material shall be removed from the site. Structural Concrete failed to meet the mix design requirements shall not be used in the non-structural / temporary works unless otherwise approved by the Engineer. Deliver sealants in the manufacturer’s original unopened containers. The minimum tensile yield strength for all reinforcing steel bars shall be 500 MPa with a minimum modulus of elasticity of 190 MPa. 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.5.2.2.1 General V.5.2.2.2 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.5.3.4.1 Forming Joints V.5.3.4.2 Forming Grooves V.5.3.4.3 Protection of Grooves V.5.3.4.4 Sealing Joints V.5.3.4.5 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. Method Statement for Temperature Control and Monitoring for Mass Concrete 5. Concrete Batch Plant Supplier The Plant Manager shall monitor the prevailing Ambient conditions, concrete mix temperature trends etc. The Site Engineer and the QC will monitor the concrete placement and will notify the Site Agent of any unacceptable materials or operations for action. The materials and Mix design must be approved and available at the site. Assist in constructing and later disassembling reinforcement braces, concrete forms, scaffolds and temporary structures. The consultant will review the test results and will take the required action.

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Light Tools Power Tools (Various) Hand Tools (Various) 1. For bars in tension, the mechanical coupler shall satisfy the following criteria: a.

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