METHOD STATEMENT FOR CONSTRUCTION OF COPING BEAM

METHOD STATEMENT FOR CONSTRUCTION OF COPING BEAM

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1. SCOPE OF WORK

This method statement outlines the construction procedure for coping beam on a skyway project, including formwork installation, reinforcement fixing, concrete pouring, and curing.

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2. REFERENCES

• Approved Construction Drawings & Structural Plans

• DPWH Standard Specifications

• ACI 318 – Concrete Design and Construction Standards

• ASTM A615 – Standard Specification for Reinforcing Steel

• ACI 301 – Concrete Work Specifications

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3. RESPONSIBILITIES

Project Engineer

• Ensures compliance with construction drawings and specifications.

Site Supervisor

• Manages workforce, materials, and equipment.

QA/QC Engineer

• Ensures quality of materials and workmanship.

Safety Officer

• Implements safety protocols and ensures worker compliance with PPE.

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4. MATERIALS & EQUIPMENT

4.1 Materials

• Ready-Mix Concrete (as per design mix)

• Reinforcement Bars (Grade 40/60, as per approved bar bending schedule)

• Formwork Materials (plywood, steel, or timber)

• Curing Compound / Wet Hessian Cloth

4.2 Equipment

• Concrete Mixer / Transit Mixer

• Concrete Vibrator

• Crane / Lifting Equipment

• Scaffolding & Ladders

• Surveying Tools (Total Station, Spirit Level, Theodolite)

• Cutting & Bending Tools

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5. METHODOLOGY

5.1 Pre-Construction Activities

1. Survey & Layout

   • Verify coping beam dimensions and alignment using total station.

   • Mark reference points for reinforcement and formwork installation.

2. Material Inspection

   • Check reinforcement bars for correct diameter, length, and bending.

   • Ensure formwork materials are free from defects.

   • Verify concrete mix design approval.

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5.2 Formwork Installation

1. Formwork Positioning

   • Install formwork firmly and securely along the edge of the skyway structure.

   • Use steel supports and bracing to prevent movement during concrete pouring.

2. Alignment & Level Check

   • Use spirit level or laser level to maintain correct elevation and straightness.

   • Apply release agent for smooth stripping after curing.

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5.3 Reinforcement Installation

1. Placing of Rebars

   • Install reinforcement bars as per the bar bending schedule (BBS).

   • Ensure proper lap splicing and anchorage lengths as per design.

   • Maintain correct concrete cover using spacers and chairs.

2. Tying & Securing

   • Use binding wire to secure rebars in position.

   • Inspect and approve reinforcement before proceeding with concreting.

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5.4 Concrete Pouring

1. Pre-Pour Checklist

   • Ensure formwork and reinforcement are properly secured.

   • Check slump test results (workability should match approved mix).

   • Ensure weather conditions are suitable for concreting.

2. Concrete Placement

   • Use crane bucket / concrete pump to place concrete uniformly.

   • Pour concrete in layers to avoid segregation.

   • Use mechanical vibrators to remove air voids.

3. Quality Control During Pouring

   • Perform slump test and compressive strength test (cube/cylinder samples).

   • Maintain proper curing temperature and avoid premature drying.

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5.5 Formwork Removal & Curing

1. Formwork Removal

   • Remove side formworks after 24–48 hours (or as per strength requirement).

   • Strip bottom supports after 7–14 days, depending on curing conditions.

2. Curing Process

   • Apply curing compound or cover with wet hessian cloth for at least 7 days.

   • Keep surface moist to prevent cracking.

3. Surface Finishing

   • Inspect concrete for honeycombs or voids.

   • Conduct repair work using Pressure Injection Epoxy (PIE) if necessary.

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6. SAFETY REQUIREMENTS

• Workers must wear PPE (helmets, gloves, safety boots, harness for heights).

• Ensure proper scaffolding & edge protection during work.

• Use tag lines & safety ropes when lifting materials.

• Prohibit unauthorized access to the work area.

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7. INSPECTION & TESTING

• Pre-Pour Inspection – Ensure proper formwork and rebar placement.

• Concrete Strength Test – Cube or cylinder tests at 7 & 28 days.

• Final Inspection – Check dimensions, alignment, and surface finish.

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8. APPROVALS

This method statement shall be reviewed and approved by:

Prepared by:
Project Engineer
[Name]

Reviewed by:
QA/QC Engineer
[Name]

Approved by:
Project Manager
[Name]

METHOD STATEMENT FOR INSTALLATION OF ANCHOR BOLTS, SOLE PLATE, AND GROUTING

 

1. SCOPE OF WORK

This method statement outlines the step-by-step procedure for the installation of anchor bolts and sole plates, including grouting between the coping beam and the sole plate, ensuring proper alignment, levelness, and structural integrity.

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2. REFERENCES

• Approved Construction Drawings & Specifications

• DPWH Standard Specifications

• ASTM C1107 – Standard Specification for Packaged Dry, Hydraulic-Cement Grout

• ACI 351.1R – Grouting between Foundations and Bases

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3. RESPONSIBILITIES

Project Engineer

• Supervises execution and ensures compliance with the method statement.

Site Supervisor

• Coordinates the installation crew and ensures materials are available.

QA/QC Engineer

• Ensures correct anchor bolt placement, sole plate leveling, and grout application.

Safety Officer

• Enforces proper PPE and safety procedures.

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4. MATERIALS & EQUIPMENT

4.1 Materials

• Anchor Bolts: As per approved drawing specifications.

• Sole Plate: Prefabricated steel plates with required dimensions and machining.

• Non-Shrink Grout: High-strength, non-shrink cementitious or epoxy grout (e.g., Sikagrout, Fosroc, BASF).

• Shims & Leveling Plates: For temporary leveling of the sole plate before grouting.

• Epoxy Adhesive: If specified for anchor bolts.

• Cleaning Agents: Compressed air, acetone, or thinner for surface preparation.

4.2 Equipment

• Drill Machine (if post-installed anchors are required)

• Torque Wrench (for tightening bolts)

• Leveling Instruments (spirit level, laser level)

• Mixing Equipment (grout mixer, paddle drill, or manual mixing tools)

• Concrete Vibrator (if deep grout application is needed)

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5. METHODOLOGY

5.1 Pre-Installation Preparations

1. Survey & Layout

   • Verify the exact locations of anchor bolts and sole plates as per construction drawings.

   • Mark the positions using chalk or markers.

2. Material Inspection

   • Ensure anchor bolts, sole plates, and grout materials meet project specifications.

   • Check for defects, rust, or damages.

3. Surface Preparation

   • Clean the coping beam surface where the sole plate will be installed.

   • Remove dust, oil, grease, or laitance.

   • Blow out dust from drilled holes (if post-installed anchor bolts are used).

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5.2 Installation of Anchor Bolts

1. For Pre-installed Anchor Bolts

   • Ensure bolts are correctly embedded in the coping beam during concrete placement.

   • Check verticality and alignment using a template before concrete sets.

2. For Post-installed Anchor Bolts (If required)

   • Drill holes using the required depth and diameter.

   • Clean holes with compressed air.

   • Apply epoxy adhesive (if specified) before inserting anchor bolts.

   • Insert bolts and allow the adhesive to cure as per manufacturer’s instructions.

3. Tightening of Anchor Bolts

   • Use a torque wrench to tighten the bolts to the specified torque value.

   • Verify alignment before proceeding to sole plate installation.

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5.3 Installation of Sole Plate

1. Positioning & Leveling

   • Place the sole plate over the installed anchor bolts.

   • Insert shims or leveling plates to achieve the required elevation.

   • Ensure proper alignment using a spirit level or laser level.

2. Temporary Fixing

   • Spot weld or clamp the sole plate in position (if required).

   • Re-check alignment before proceeding with grouting.

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5.4 Grouting Between Coping Beam and Sole Plate

1. Grout Mixing

   • Prepare the non-shrink grout as per manufacturer’s specifications.

   • Maintain the correct water-to-powder ratio.

   • Mix thoroughly to achieve a uniform consistency (avoid excessive water to prevent strength loss).

2. Formwork Preparation

   • Install a grout form around the sole plate to contain the grout.

   • Apply sealant to prevent leakage.

3. Grout Application

   • Pour or pump the grout slowly from one side to avoid air entrapment.

   • Use a rod or vibrator to help the grout flow evenly under the plate.

   • Ensure full bearing contact between the sole plate and the coping beam.

4. Curing of Grout

   • Cover the grout with wet hessian cloth or apply a curing compound.

   • Allow the grout to cure for 24 to 48 hours before removing formwork.

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5.5 Final Inspection & Tightening

1. Check for Voids & Defects

   • Inspect for shrinkage cracks or voids in the grout.

   • Conduct a hammer test to verify grout bonding.

2. Final Torque Tightening

   • Tighten the anchor bolts to the final torque value as per specifications.

3. Surface Finishing

   • Remove excess grout and clean the sole plate surface.

   • Apply protective coating (if required).

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6. SAFETY REQUIREMENTS

• Workers must wear PPE (helmets, gloves, safety goggles, safety boots).

• Handle epoxy and grout with care, using gloves and masks.

• Use proper lifting techniques when handling sole plates.

• Ensure proper ventilation in confined areas during grout application.

• Keep fire extinguishers nearby in case of welding-related tasks.

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7. INSPECTION & TESTING

• Anchor Bolt Alignment Check – Before and after tightening.

• Levelness of Sole Plate – Using precision instruments.

• Grout Strength Test – As per ASTM C109 (compressive strength test at 7 & 28 days).

• Torque Test on Anchor Bolts – Ensure proper bolt tension.

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8. APPROVALS

This method statement shall be reviewed and approved by:

Prepared by:
Mark Arjay M. Arevalo
[Name]

Reviewed by:
QA/QC Engineer
[Name]

Approved by:
Project Manager
[Name]

METHOD STATEMENT FOR COLUMN PIER CONSTRUCTION

 

1. SCOPE OF WORK

This method statement outlines the procedures for the construction of a column pier for a skyway project, including excavation, reinforcement, formwork, concrete pouring, and curing.

2. REFERENCES

• Approved Construction Drawings

• DPWH Standard Specifications

• ASTM & ACI Codes for Concrete Work

• Safety and Quality Control Guidelines

3. RESPONSIBILITIES

• Project Engineer: Supervises execution and ensures compliance with specifications.

• Site Supervisor: Coordinates workers and material deliveries.

• QA/QC Engineer: Monitors quality control for concrete, rebar, and formworks.

• Safety Officer: Ensures compliance with site safety protocols.

4. MATERIALS & EQUIPMENT

• Materials:

  • Ready-mix concrete (as per design mix)

  • Reinforcing bars (Grade 40/60)

  • Formwork materials (plywood, steel, or timber)

  • Curing compounds

• Equipment:

  • Crane

  • Concrete pump

  • Vibrator

  • Welding machine

  • Scaffolding and ladders

5. METHODOLOGY

5.1 Survey & Layout

• Verify column pier locations as per the approved drawings.

• Establish reference points and levels using a total station or leveling instrument.

5.2 Excavation & Pile Cap Preparation

• Excavate as per the structural design depth.

• Install dewatering systems if needed.

• Compact the base and install lean concrete.

• Form and pour the pile cap as per structural drawings.

5.3 Reinforcement Works

• Cut, bend, and install rebar according to approved bar bending schedule.

• Use spacers and chairs to maintain proper cover.

• Secure all reinforcements with binding wire.

5.4 Formwork Installation

• Install steel or plywood formworks ensuring proper alignment and bracing.

• Apply release agent for easy stripping.

• Inspect formworks before pouring concrete.

5.5 Concrete Pouring

• Use ready-mix concrete with the specified design mix.

• Pour in layers of 1.5m max and use vibrators to remove air voids.

• Conduct slump test and sample cylinders for compressive strength tests.

• Allow concrete to set as per curing time specified.

5.6 Stripping of Formwork

• Remove formworks after achieving sufficient strength (as per structural specifications).

• Inspect for defects and conduct necessary repairs if needed.

5.7 Curing & Protection

• Apply curing compound or use wet hessian cloth for at least 7 days.

• Protect column pier from vibrations and impacts.

5.8 Finishing & Quality Inspection

• Check concrete surface for honeycombs and cracks.

• Conduct compressive strength tests on cube/cylinder samples.

• Perform a final quality inspection before proceeding to the next phase.

6. SAFETY & ENVIRONMENTAL REQUIREMENTS

• Workers must wear PPE (helmets, gloves, safety harness, and boots).

• Follow proper lifting and hoisting procedures.

• Maintain safety barriers around the work area.

• Implement dust and noise control measures.

7. INSPECTION & TESTING

• Pre-pour Inspection: Ensure formwork and reinforcement are in place.

• During Pouring: Monitor slump, temperature, and vibration.

• Post-pour Testing: Conduct compressive strength tests.

8. APPROVALS

This method statement shall be reviewed and approved by:

Prepared by:
Mark Arjay M. Arevalo
[Name]

Reviewed by:
QA/QC Engineer
[Name]

Approved by:
Project Manager
[Name]

METHOD STATEMENT FOR INSTALLATION OF ANCHOR BOLTS ON EXISTING PIER COPING BEAM FOR GIRDER INSTALLATION

METHOD STATEMENT FOR INSTALLATION OF ANCHOR BOLTS ON EXISTING PIER COPING BEAM FOR GIRDER INSTALLATION

1. PURPOSE

The purpose of this method statement is to outline the procedures for the proper installation of anchor bolts on an existing pier coping beam to ensure secure and accurate girder installation.

2. SCOPE

This method applies to the installation of anchor bolts on an existing pier coping beam, including drilling, setting, securing the anchor bolts, restoring the chipped concrete cover, and installing the steel plate/base plate supplied by the client. An as-built plan of the structure will be provided by the client. All previously approved materials documentation will be provided by the client; therefore, no additional testing will be required.

 

3. RESPONSIBILITIES

• Project Engineer: Ensures that all works comply with project specifications, safety requirements, and approved drawings.
• Site Supervisor: Manages the execution of the works and ensures adherence to the method statement.
• Surveyor: Verifies alignment and positioning of anchor bolts and steel plates.
• Quality Control Engineer: Inspects and ensures compliance with quality requirements.
• Safety Officer: Ensures all safety measures are in place and followed.
• Skilled  and Unskilled Workers: Assist in the execution of tasks, including chipping, drilling, installation, and restoration, under the supervision of the site supervisor.

 

4. MATERIALS AND EQUIPMENT

• Anchor bolts (as per approved design and specifications)
• Drill machine with appropriate drill bits
• Angle Grinder using diamond disc
• Epoxy or chemical anchoring adhesive
• Measuring tape, chalk line, and template
• PPE (helmets, gloves, safety goggles, etc.)
• Chipping tools (jackhammer, hammer, and chisel)
• Temporary access platform (scaffolding or ladder)
• Concrete repair mortar (non-shrink grout)
• Bonding agent
• Trowel and finishing tools
• Steel plate/base plate (supplied by client)
• Welding machine (if required)

 

5. PROCEDURE

 

5.1 Preparation

 

1. Install access (such as scaffolding or ladder) prior to conducting inspection to ensure safe and convenient evaluation of the existing structure.
2. Review project drawings and specifications to confirm the type, size, and location of anchor bolts.
3. Conduct site inspection to ensure the existing pier coping beam is free of defects that may affect installation.
4. Mark the positions of the anchor bolts using templates or chalk lines.

 

5.2 Chipping to Expose Rebars

1. Cut the area of concrete to be chipped off using grinder prior to chipping at the marked positions to expose the reinforcement bars.
2. Use a jackhammer or hand tools carefully to avoid damaging the existing reinforcement.
3. Ensure that no rebars are cut or damaged, as cutting rebars is not allowed in this scope.
4. After exposure, clean the area and prepare it for inspection.
5. Provide safe access for inspection before proceeding to drilling activities.
6. Once the inspection is completed and approved, proceed to the next step.

 

5.3 Drilling and Cleaning

1. Drill holes at the marked positions using a rotary hammer drill, ensuring the required depth and diameter as per design specifications.
2. Clean the holes thoroughly using compressed air to remove dust and debris.
3. Use a wire brush to remove loose particles inside the hole.

 

5.4 Installation of Anchor Bolts

1. Prepare the epoxy/chemical anchor adhesive as per the manufacturer’s instructions.
2. Apply the adhesive into the drilled hole using a dispensing tool.
3. Insert the anchor bolt into the hole by slowly rotating it to ensure even distribution of the adhesive.
4. Allow the adhesive to cure as per the manufacturer’s recommended curing time before applying any load.

 

5.5 Restoration of Chipped Concrete Cover

1. Clean the chipped area to remove dust, loose particles, and contaminants.
2. Apply a bonding agent to the exposed surface to ensure good adhesion of the repair mortar.
3. Prepare the concrete repair mortar (non-shrink grout or polymer-modified mortar) as per the manufacturer’s instructions.
4. Fill the chipped area with the prepared mortar, ensuring proper compaction and coverage.
5. Use a trowel to level and finish the surface to match the original concrete profile.
6. Allow the repair material to cure as per the manufacturer’s recommended time before applying any load.
7. Conduct final inspection to ensure the restored surface meets project specifications. 

5.6 Installation of Steel Plate/Base Plate

1. Verify the dimensions and specifications of the steel plate/base plate as per approved drawings and client instructions.
2. Position the steel plate/base plate over the installed anchor bolts, ensuring proper alignment.
3. Use leveling shims to achieve the required elevation and alignment.
4. Secure the steel plate/base plate using nuts and washers, tightening them to the specified torque.
5. If required, apply grout underneath the steel plate to ensure full contact with the concrete surface and allow proper load transfer.
6. Allow the grout to cure as per the manufacturer’s recommendations before proceeding with girder installation.
7. Conduct a final inspection to confirm that the steel plate/base plate is properly installed and meets the required specifications.

 

5.7 Inspection and Testing

1. Check alignment, depth, and levelness of installed anchor bolts.
2. Inspect the restored concrete surface for proper adhesion and finish.
3. Inspect the installed steel plate/base plate for alignment, elevation, and secure fastening.
4. Any discrepancies should be rectified immediately before proceeding with girder installation.

 

5.8 Removal of Access

1. Inspect the temporary access platform (scaffolding or ladder) to ensure it is stable and safe for removal.
2. Dismantle scaffolding or ladders in a controlled manner, following safety protocols.
3. Remove all temporary supports and materials used for access.
4. Conduct a final inspection to ensure no debris or obstructions remain in the work area.
5. Dispose of any waste materials in accordance with environmental and safety regulations.

 

6. SAFETY AND ENVIRONMENTAL REQUIREMENTS

1. Ensure all personnel wear appropriate PPE at all times.
2. Provide barricades and warning signs around the work area.
3. Follow proper handling and disposal of chemical adhesives, repair materials, and grout.
4. Maintain good housekeeping at the worksite to prevent hazards.

 

7. ACCEPTANCE CRITERIA

• Anchor bolts must be installed as per the approved design and specifications.
• Ensure proper alignment and positioning for girder installation.
• Restored concrete cover must be uniform and bonded properly with no cracks or voids.
• Steel plate/base plate must be properly aligned, secured, and grouted as required.

 

8.       ATTACHMENTS

(Previously approved materials documentation (provided by the client))

• Material specifications
• Manufacturer’s instructions for epoxy adhesive, concrete repair materials, and grout
• As-built plan of the structure (provided by the client)

Introduction

        Hello, My name is Mark Arjay M. Arevalo. In this blog I want to share my experience in my job. I am currently QAQC Assistant in Construction. I am also working as a part time in a BPO company,  as "Data Analyst and Data Entry". I am very enthusiast about Technology although . I want to learn more about technology, I read e-books, watching YouTube videos and learning about new technology and trends.

      Now, let me show you my full time job as QAQC Assistant in Construction of 25MW Hydro Power Plant. This Hydro Power Plant  consist of Intake structure, Headrace Tunnel, Reservoir or Surge tank, Penstock and last but not the least Powerhouse. In this project I am in the consultant side. We inspect, approve, review, witness activities of the contractor and  also I, myself  checking of the Progress Billing of the contractor if there is an issued NCR on their billing.

Fig. 1 Intake Structure

Fig. 2 Tunnel

Fig. 3 Surge Tank / Reservoir

 In this location we are going to construct the surge tank. You can see in this photo the 5.8 diameter penstock and 5.8 diameter riser.

Fig. 4 Penstock 5.8 Dia.

Fig. 5 Powerhouse

Fig. 6 Switch Yard

Intended for Metering station

Fig.7 Metering Station

Temporary Facilities

Batching Plant

Testing Center conducting compressive testing of concrete cylinder sample.

Admin Offices

Contractors Offices