Method Statement for Roadway Embankment.

Dear fiends, here is the sample of Method Statement for Roadway Embankment(Material sampling and testing)

1.SCOPE OF WORK:
The Roadway Embankment covers handling, loading, transporting, placing and grading of acceptable materials excavated from the roadway or imported from borrow sites for roadway construction at Project up to the finishing level.

2.PURPOSE:
To describe and outline the methodology and work procedures for Roadway Embankment utilizing equipment such as Grader, Vibratory Soil Compactor, Backhoe, Dump/Tipper Truck, and Wheel Loader.

3. REFERENCES
3.1 Contract Document and Specifications
3.2 Shop Drawings
3.3 Approved Quality Assurance and Quality Control Plans.

4. RESOURCES
4.1 Materials:
- Wooden Stake
- Concrete Nails
- Warning Tapes
- Spray Paints and Markers
- Steel Bar (for Staking)

4.2 Equipment:
- Bulldozer
- Excavator (Backhoe)
- Dump Truck
- Shovel
- Grader
- Compactor
- Wheelbarrow
- Set of Minor Tools

4.3 Personnel
- Project Manager
- Site Engineer
- Quality Control Engineer
- Surveyor
- Safety Officer

5. DEFINITION & ABBREVIATIONS:
PM – Project Manager
SE - Site Engineer
QCE – Quality Control Engineer
SU – Surveyor
SO - Safety Officer

6. RESPONSIBILITIES:

6.1 The Project Manager shall direct when and where to start the Embankment Works and establish deadlines for activity to be finished. He shall make sure that Embankment Works shall be finished with-in the time frame set forth on the construction schedule.
6.2 The Site Engineer shall be responsible for the execution of the Roadway Embankment.
6.3 The Quality Control Engineer shall be responsible for monitoring the finishing level as per the approved plans and specifications.
6.4 The Surveyor is responsible for establishing the boundaries, limits and extent of Roadway Embankment.
6.5 The Safety Officer shall ensure that safety of the workers is taken into consideration at all times. He shall make sure that stake/poles and barricades with warning tapes on it shall be in place whenever required as the roadway embankment progresses. Warning lights shall likewise be introduced if found necessary.

7. PROCEDURE:
The foregoing procedure for the Roadway Embankment will serve as a guide by the Site Engineer together with the surveyor along the course of their work in order to achieve an acceptable quality of workmanship and attaining the optimum results with less time and effort:

7.1 GENERAL
The Excavation Works shall be done by the use of the Vibratory Soil Compactor, Backhoe, Dump/Tipper Truck, Wheel Loader and a set of minor tools such as shovel, wheel borrow, etc.

7.2 SURVEY LAYOUT
7.2.1 The Surveyor in coordination with the site engineer shall stake out the limits and extent of the excavation and constantly check the depth of excavation and inform the excavator when and where to stop digging.
7.2.2 He shall make sure also that working level is established so as to avoid over cutting.
7.2.3 The Site Engineer will coordinate with the planning department the potential location of utility services that may be affected if any and this will be marked by the Surveyor.

7.3 HANDLING OF MATERIALS FOR EMBANKMENT
7.3.1 Handling of materials will start from the Roadway Excavation which had been tested to be appropriate for future use as an Embankment material.
7.3.2 The excavated material shall be subject for approval by the consultant/Engineer.
7.3.3 A Stockpile area shall be coordinated and approved by the consultant/Engineer, if necessary a stockpile layout plan shall be offered to the consultant/Engineer for approval prior to start piling.
7.3.4 The approved area for stock piling of embankment materials shall be ensured to be leveled smooth, firm, and free of vegetation or other contaminants.
7.3.5 Stock pile area shall be strategically located for easy access for handling and transporting.

7.4 LOADING AND TRANSPORTING OF EMBANKMENT MATERIALS
7.4.1 Loading and transporting of embankment of materials shall be done by the use of Dump Truck for hauling and transporting of materials.
7.4.2 Wheel Loader for loading the embankment materials to the dump truck.

7.5 PLACING AND GRADING OF EMBANKMENT MATERIALS
7.5.1. Embankment materials shall be loosed lift to a depth (According to the Project specification) each layer and properly moistened and compacted.
7.5.2. Successive layers of the same depth of loose lift shall be placed and compacted until reaching the intended design elevation for embankment.
7.5.3. Motor Graders shall be used for grading, leveling, and finishing of the freshly backfilled materials.

7.6 COMPACTION OF EMBANKMENT MATERIALS
7.6.1. Embankment shall be compacted to attain (According to the Project specification) MDD.

7.7 TEST METHODS AND MINIMUM SAMPLING FOR EMBANKMENT MATERIAL
7.7.1 Embankment material shall be tested as specified in the project specifications:
Characteristics Test Method Sampling Frequency
* Soil Classification AASHTO M145 As per specification
* Moisture Density Test(Modified Proctor) AASHTO T180 As per specification
* Field Density AASHTO T191 or T238 and T239 As per specification
* Plate Load Test AASHTO T221 As per specification
7.7.2 Rock Embankment:
Characteristics Test Method Sampling Frequency
* Compaction(preparation)of natural ground AASHTO T180 (Method D) As per specification
* Soil Classification AASTO M145 As per specification
* Field Density AASHTO T191 or T238 and T239 As per specification
* Percent relative compaction ASTM D4253 As per specification
* Rock Embankment Rock test section As per specification
* Moisture Density Test(Modified Proctor) AASHTOT 180 As per specification
* California Bearing Ratio (CBR) ASTM D 1883 As per specification

8. QUALITY:
The QA/QC Manager will monitor and ensure that this Method Statement shall be strictly enforced so that smooth Work Flow will be attained and prior work compliance obtained such as the following:
8.1 Materials Submittal: All required materials approved by the consultant/Engineer shall be obtained prior to the start of the work.
8.2 Approved Drawings: All relevant drawings such as embankment elevations and line grade cross-sections shall be approved by the consultant prior to commencing work.
8.3 Routine Work: The SE, QCE, together with the Surveyor shall constantly monitor the work operation to conform with the design elevations and line grade cross-sections.

9. SAFETY:
The Safety Officer of the contractor and the Survey Team together with the QA/QC Team shall work together in the prevention of any work related accidents in the job site.
The following safety requirements must always be observed and adhered in the site at all times:
9.1 Safe means of access when working on grading area will be provided & maintained.
9.2 Appropriate wearing of Personal Protective Equipment (PPE) shall be observed.