Table of Contents
What is the method statement for backfilling and compaction procedure-earthwork?
This method statement defines the methodology for execution of backfilling and compaction procedure related to earthwork & describes the sequence of activities, utilization of resources, documents & drawings involved, maintaining & recording documents & data to meet project-specific & contractual obligations, and risk assessment for the activities involved.
I. Description of Works
1. Introduction
The purpose of this method statement is to define the methodology for execution of backfilling and compaction procedure related to earthworks & to describe and refer to the sequence of activities, utilization of resources, documents & drawings involved, maintaining & recording documents & data to meet project-specific & contractual obligations.
This method statement for backfilling and compaction earthwork illustrates the procedures intended to adopt for all structures and trenches associated with this contract package. Backfilling and compaction of irrigation and plantation system, roadworks, and backfilling work with concrete are not considered in the document.
2. Definitions
SE Site Engineer
QC Quality Control Engineer
SF Site Foreman
PM Project Manager
SA Site Agent representative from the Lab
HSE Manager Health, Safety & Environmental Manager
HSE Officer Health, Safety & Environmental Officer
CEMP Construction Environmental Management Plan
QCP Quality Control Plan
HSE Plan Health, Safety, and Environment Plan
GWL Ground Water Level (meter)
NGL Natural Ground Level (meter)
Note: All dimensions are in mm unless specified.
3. Reference
Project Tender Specifications
HSE Plan
CEMP
General Lifting Plan
BS 812: Testing of Aggregates
BS 1377 Methods of test for soils for civil engineering purpose
Typical Trench Section Drawing
4. Responsibilities
| Project Manager | Responsible for overall construction activities ensuring that all method statements, quality, and safety procedures are implemented and required approval permits are obtained. |
| Construction Manager | Supervise operations in accordance with the approved Method Statement, shop drawings, specifications, material submittals, and schedules to achieve the acceptance of the project deliverables. |
| Site Engineer | Supervise closely, the activities designated to them and ensure that all instructions and safety procedures are followed and strictly adhered to. Supervise the work to ensure that technical, quality, safety, and purchase order requirements are met; Attend daily site meetings and communicate his daily report with the Project/Site Engineer; Participate in training and development of his subordinates; Organize with the Project/Site Engineer to ensure the availability of plant, equipment, and labor to his designated work activities; Closely monitor the usage of consumables and materials by his crew in order to minimize wastage. Assess the craftsmanship of subordinates under his control. |
| Site Supervisor | Carry out a pre-construction survey to fix the locations and corresponding elevations as per the approved shop drawings. Ensure quality and compliance during phases of surveying works and the regular checking of the surveying equipment or periodic calibration from the third party. Ensure the validity and the serial number of calibration certificates is available and posted on the survey equipment. Ensure proper safety guarding of surveying equipment. To maintain the records of all surveying equipment handled. |
| Chief Surveyor | The first aider responds promptly when requested, operates with competence, knows how to secure additional help when needed, reports incidents and actions taken, and complies with requirements for certification. |
| Survey Aide | Maintain and use Surveying equipment. Assist Surveyors in taking measurements, record measurements manually or electronically, and peg out boundaries. |
| HSE Engineer | Ensure enforcement of safety procedures in accordance with the approved HSE Plan. Will be closely monitoring the site engineer’s strict implementation of the MS and Risk Assessment, the use of proper tools and equipment to maintain safety, certifications of equipment and their adherence to safety regulations, reporting of any unsafe work or stopping work that does not comply with ES & H procedures. |
| First Aider | The first aider responds promptly when requested, operates with competence, knows how to secure additional help when needed, reports incidents and actions taken, and complies with requirements for certification. |
5. Interfacing with Other Operations
Existing shoring or temporary support work if applicable.
6. Duration, Phasing with the Subcontractors
Refer to the approved baseline schedule for the duration of backfilling works
7. List of Subcontractors
Name of Subcontractors here
II. Resources
1. Plant and Equipment
| Description | No. of Units | Application |
| Leica TS 15m Total Station | 1 | Setting Out for Construction |
| Leica NA2 Automatic Level | 1 | Leveling |
| Excavator | As required | Spreading & Leveling in a small scale |
| Dump Trucks | As required | Hauling |
| Compacting Roller with Vibrator | As required | Compaction |
| Plate Compactor | As required | Compaction |
| Tampering Jack | As required | Compaction |
| Nuclear Density Gauge | As required | To check soil density & moisture |
| Water Tanker | As required | Water transportation |
| Water Pump | As required | Water spraying and removal |
| Wheel Loader | As required | Unloading the backfill material |
| Bobcat | As required | Spreading & Leveling on a small scale |
Note:
Please refer to Appendix C for Leica TS 15m Total Station and Leica NA2 Automatic Level Calibration Certificates.
2. WorkForce
| Designation | No. of Persons |
| Site Engineer | 1 |
| Site Supervisor | 1 |
| Foreman | 2 |
| Chief Surveyor | 1 |
| Survey Aide | 1 |
| HSE Engineer | 1 |
| First Aider | 1 |
| Labors | As required |
3. Light Tools
| Description | No. of Units | Application |
| Hammer | As required | Driving of Steel Pins |
| Steel Chisel | As required | Chipping |
| Hand Shovel | As required | Spreading the material |
| Safety Equipment | As required |
III. Materials
Measuring Tape
Spray Paints
Steel Pegs/Pins
Approved Structural earth fill to be used as backfill
Approval of backfilling material will be received before using it on-site.
Warning/Identification Tape: Standard 4 mil polyethylene 76mm (3 inches) wide tape, detectable type, with an appropriate color suitable for utility imprinted with information utility below. Below is the color coding of the warning/ identification/marker tape:
- Warning Tape for Buried Electrical 11KV Cable Color: Red
- Warning Tape for LV Cable Color: Yellow
- Warning Tape for SSD Duct Color: Yellow
- Warning Tape for Telephone & ELV Cable Color: Green
- Warning Tape for Buried Electrical Cable Color: Red
- Warning Tape for Potable Water Pipe Color: Blue
- Warning Tape for Foul Water Pipe Color: Red
- Warning Tape for Street Lighting Cable Color: YellowCable Tile: Red on Top & Bottom Sides & Yellow on center with black text
- Galvanized Tracer Wire
Note:
Test results will be submitted before use.
IV. Site Planning
Refer to the approved baseline schedule for the duration of backfilling works.
Preparation
Permits from the concerned authority shall be obtained prior to starting work at the site.
Contractor shall ensure that all gate passes, permits, tools, materials for safety precautions, manpower, and equipment are available before the commencement of work.
The Site Team shall make sure that access roads are always clear from any obstruction and site is always accessible.
a. Site Clearance
Before commencing the work, the area shall be cleared of all debris, materials, or other obstructions.
b. Traffic Management
The Site Team with the assistance of the Safety Officers shall coordinate logistics and materials movement through the site following the direction and road signs displayed on site. The required diversion routes shall be marked on drawings including the required traffic signs.
The Work Permits and Operator Certificates shall be compiled and filed for reference by authorized personnel.
c. Pre-construction Safety Meetings
The meeting shall be scheduled prior to the beginning of the work and before any Subcontractor starts on the project.
General contractual safety, health, and environmental requirements.
Traffic safety will be discussed to emphasize these meetings.
General contractual Safety, Health, and Environmental requirements.
Roles of the contractor, subcontractors, authorized representatives, and all project workers.
Accident reporting requirements.
Specific details of the work to be performed along with the use of personal protective equipment.
Emergency procedure.
V. Methodology
V.1 General
This Methodology specifies the requirement for backfilling and compaction procedures related to earthworks and describes the various procedure around open trenches, pits, below and around the structural foundation, and above and below underground utilities/services, at the site.
1. Screening of excavated materials shall be carried out by using a shovel & excavator bucket near the stockpiles allotted by the Client. Approval on backfilling material will be received before using it.
2. The areas to be filled shall be divided into manageable sections that shall be defined upon a sketch and submitted with an inspection request to the Engineer.
3. Sufficient number of guides to be provided and agreed upon by The Engineer for layer thickness as specified and records to be maintained for each layer.
4. Ensure that any unsuitable material does not appear in backfilling. Where unsuitable material appears, it shall be removed.
5. Water shall be used for compaction of all fill materials within the area of excavation.
6. Backfilling/compaction shall not be stopped at vertical height, for further continuation of backfilling steps to be provided in each layer.
7. Filling and compaction shall be done fairly in level, undesired elevations and undulations shall not be accepted.
8. When the material source changes, test results of the material shall be submitted for approval prior to use it.
9. Mixing of backfill material shall be carried out homogeneously by shovel & excavator bucket as per passed test results mixing ratio recommended by Third Party Laboratory (TPL).
10. Water shall be mixed as necessary to ensure the moisture content of the whole layer is +/- 3% of the optimum moisture content for trenches prior to compaction.
11. Area for backfill material dumping shall be cleaned and barricaded properly prior to starting shifting.
12. Loose materials shall be removed and the area to be cleaned prior to backfilling works. The inspection shall be offered to The Engineer for approval of the area prior to starting the backfilling.
13. The surveyor shall mark the reference level and top level to be achieved on the sides of the excavation and the foreman shall mark each layer level on different locations by using the spray paint to control & monitor the thickness of compacted layers.
14. In case of insufficient space, backfilling material is to be lowered down mechanically and to be laid manually.
15. Plate compactor or jumping compactor and moisturizing of the fill material shall be carried out during the compaction process to meet the required optimum moisture content.
16. Trial compaction shall be performed to determine the required number of passes of the compactor to achieve the 95% of the maximum dry density (MDD).
17. Due to excess water/compaction, if an air pocket sponge area is found then those areas shall be scratched and replaced with backfill material and shall be compacted.
18. The inspection shall be offered to the Engineer for approval of each layer after completion of satisfactory compaction.
19. Upon completion of the backfilling, all surplus material shall be removed and disposed of at the site as directed by the Engineer.
V.2 Backfilling and Compaction of Structural Backfill
1. Provisions and measures shall be taken to protect the Water Proofing Membrane during backfilling Ensure underground Concrete protection and Water Proofing is completed and inspected before proceeding with backfilling around and near the structure.
2. Where required, waterproofing shall be applied up to sufficient height and be inspected by The Engineer prior to starting the backfilling work.
3. Ensure all underground services are provided, tested, or partially tested and approved prior to proceeding with backfilling.
4. The backfill shall be brought to a suitable level above grade to provide for anticipated settlement and unless indicated otherwise, is to be sloped away from the structure.
5. Backfilling material around of structure shall only be hand placed. Compaction of backfilling within one meter of the structure shall only be achieved by manually operated tools & equipment. Towed or self-propelled vibrating rollers or heavy compaction equipment shall not be used within one meter of any structure.
6. The bottom of all excavating is to be probed and any poor bearing area shall be reported to the Engineer who will direct remedial work.
7. In circumstances where backfill has to be deposited below standing water, only rock is to be used as approved by the Engineer.
8. For fill below ground slabs:
The installation of cable ducts for service entries and service pipework is to be completed before placing the fill to receive the ground slab.
The compacted fill or hardcore is to be shaped and trimmed to the required levels and dimensions and blinded with sand.
9. Backfilling shall be done equally on both sides of the walls.
10. Protection boards shall be used to protect the waterproofing from backfilling especially in the case of liquid membranes.
11. Structural fill material to be used around Structures. The maximum size of particles allowed in backfilling within one meter of the structure shall be 50 mm.
12. Sufficient distance as approved by the Engineer to be maintained from the structure to avoid damages during compaction with heavy equipment and by using small equipment around the structure required the degree of compaction shall be achieved.
13. Backfill material shall be shifted with the help of a shovel/Bobcat in a safe manner up to the structure limit and to be laid in the approved area by the wheel loader in case of having sufficient access between the base slab & excavation side for the safe movement of the wheel loader.
14. The fill material shall be thoroughly compacted using a 2-3 tone roller compactor for structures.
15. For structural backfill, the material shall be placed in a layer within the effective range of compaction of the plant provided that the maximum loose (uncompacted) thickness of each layer shall not exceed 200mm to 300mm.
16. Material shall be watered and mixed as necessary to ensure that prior to compaction the moisture content of the whole layer is +/- 3% of the optimum moisture content. Compaction of layer shall be continued until a density of at least 95% of MDD shall be achieved.
17. Similarly, the next layer of backfill shall be carried out as per the above sequence until a desirable backfill level is achieved.
V.2.1 Backfilling of Boreholes and open investigation pits
1. All boreholes shall be backfilled with bentonite cement grout. The grout shall consist of a 75% portion by weight of ordinary Portland cement and a 25% portion by weight of Bentonite power mixed by machine or hand to uniform color and consistency before placing with a moisture content not greater than 250%.
The grout shall be introduced at the bottom of the hole by means of a tremie pipe, which shall be raised but kept below the grout surface as the filling proceeds. If requested by Engineer, the drill hole may be backfilled with clean, well-graded, silica sand placed into the borehole with equal portions of clean water to be sure that it settles to the bottom of the borehole.
2. Pits and trenches shall be backfilled as soon as practicable.
3. The backfill shall be placed in lifts of 150 mm thickness and compacted in such a manner as to minimize any subsequent settlement of the ground surface.
4. The use of sand backfill compacted by flooding may be permitted, but this method requires the approval of the Engineer.
V.3 Backfilling and Compaction of Utility Trenches
1. After the utilities have been laid, the trench refilling is to commence with approved fill in a compacted layer not exceeding 150mm unconsolidated thickness. Each layer shall be well compacted by hand with iron rammers weighing not less than 5 kg until the trench has been filled to a height of 300mm above the top of the utility.
2. The remainder of the trench is then to be refilled in the compacted layers not exceeding 300mm unconsolidated thickness. Each layer is well compacted, with power rammers, vibrating plate compactors, or other mechanical means of a type to be approved until the ground is thoroughly consolidated.
3. 200mm thick layer of backfill above the pipe aggregate surround shall be laid and not be compacted fully to avoid chances of pipe damage.
4. After the first layer test frequency shall be as agreed with The Engineer for the trench.
5. Where cover to utilities is less than 400mm, the Engineer is to be concerned further before backfilling.
6. The remainder of the fill material shall be placed in layers of not greater depth than 300 mm compacted thickness with a light mechanical 1 Ton Roller.
7. Approved Warning tape with tracer wire shall be installed at the required depth as per the approved shop drawing or 300mm below the finished ground level.
8. Where pipeline marker tape is specified, it shall be laid between 100 mm and 300 mm above the pipe.
9. Trenches are not to be backfilled until all required tests are performed on the utilities and verified by the Engineer.
10. To permit the proper consolidation of the backfill into the voids behind trench sheeting and supports, trench sheeting shall be withdrawn gradually as the backfill progresses in depth along the trench.
V.3.1 Plumbing Pipe Work in Trenches
1. The bedding material for plumbing pipework in trenches shall be constructed by spreading and compacting granular bedding material over the whole width of the pipe trench.
2. Following criteria shall be considered for bedding material if it was not mentioned in design documents:
| Pipe Diameter | Bedding |
| Up to 65mm | Sand |
| 65 – 100 mm | 10 mm single sized aggregate |
| 100 – 200 mm | 10 or 14 mm single sized or 14 – 15 mm graded aggregate |
| Over 200 mm | 10m 14 or 20 mm single sized or 15–5 or 20–5 mm graded aggregate |
3. Fill material around the pipe shall be laid for a thickness not exceeding 150 before compaction and shall continue to a finished thickness of 250 mm above the crown of the pipes unless otherwise mentioned in the approved drawings. In no case, the filling material shall be deposited more than 250 mm unconsolidated thickness.
V.3.2 Sewage System
1. Until and otherwise stated in approved design drawings/documents, granular bedding material for rigid pipes shall conform with the following requirements:
a. Gabbro shall be used in the waterlogged ground as approved by the Engineer.
b. Granular material size shall be according to the following table unless mentioned in the approved design:
| Nominal Bore (mm) | BS Sieve Size, 100% Passing by Weight | |
| Dry Conditions | Wet Conditions | |
| 100 & 150 | 14 | 20 |
| 200 – 500 | 20 | 37.5 |
| 600 – 800 | 37.5 | 50 |
| 1000 & Above | 37.5 | 50 |
c. Note more than 10% (by weight) of the granular material shall pass a 5mm, BS Sieve.
d. The minimum thickness of granular material below the barrel of pipe shall be:
| Nominal Bore (mm) | Uniform Soil | Rock | |
| Hand Finished Trench Bottom | Machine Dug Trench Bottom | ||
| 100 & 150 | 100 | 150 | 200 |
| 200 – 500 | 150 | 200 | 250 |
| 600 – 800 | 175 | 225 | 275 |
| 1000 & Above | 200 | 250 | 300 |
e. The granular bedding material for French drains shall be 20mm nominal size single size coarse aggregate.
f. Chloride and Sulphate levels for bedding materials shall conform to BS EN 10319.
g. Granular bedding material of 100 mm minimum thickness for flexible pipes (except GRP pipes) consisting of coarse-grained sand up to 10 mm and not containing any particles with sharp edges shall be provided.
2. The approved fill material shall be used to fill the pipe surround at and depth of 300 mm above the top of the pipe. The material shall be free from stones larger than 25 mm in size.
3. Stones less than 150 mm in size are allowed in the remainder of the fill material above 300 mm of the pipe.
4. Selected fill material for pipe shall be placed in layers of not greater than 150 mm of the compacted thickness and shall be compacted with a suitable rammer manually. Insides of the pipe the fill shall be carried up at least 30mm above the top of the pipe.
V.4 Backfilling excavations with Cement-Bound Granular Material
1. Backfilling excavations with cement-bound granular material shall be used for filling excavations as shown on the design drawing or as agreed by the Engineer.
2. The cement-bound granular material shall consist of crushed, hard, clean, durable rock or washed sand or a combination thereof. The material shall be sufficiently well-graded to ensure a well-closed surface finish and have a grading within the range shown below table:
| BS 410 Sieve size | Percentage by Mass Passing |
| 50 mm | 100 |
| 37.5 mm | 95 – 100 |
| 20 mm | 45 – 100 |
| 10 mm | 35 – 100 |
| 5 mm | 25 – 100 |
| 600 μM | 8 – 65 |
| 300 μM | 5 – 40 |
| 75 μM | 0 – 10 |
3. The mixing shall be done by paddle or pan-type mixer or batch mixer as approved by the Engineer.
4. The moisture content of mixed material shall not exceed 2% above the OMC determined in accordance with the Vibrating Hammer Test of BS 1924.
5. All mixed material shall be transported and placed with suitable vehicles and the thickness of one layer after compaction shall not exceed 150 mm.
6. Compaction shall be carried out immediately after the material has been spread and completed within two hours of the addition of cement.
7. Any later of cement-bound granular material not covered within two hours, shall immediately on completion be covered with impermeable PVS sheeting until the next permanent layer is laid. The top layer shall be covered for a period of 7 days.
8. Samples of the mixed material shall be taken from the site immediately before the compaction of the material. A batch of five random samples shall be taken from each layer or such other area as decided by the Engineer. From each sample, a cube test specimen shall be prepared, cured, and tested using the procedure in BS 1924.
The specimens shall be compacted to be within 95 % of the cube density when compacted by the vibratory hammer. The specimens shall then be cured at constant moisture content within the range of curing temperatures stated in BS 1924 for a period of 7 days. The specimen shall then be weighed, the dimensions checked, and tested in unconfined compression.
A representative portion of the crushed material from each specimen shall then be retained for a moisture content determination in accordance with BS 1924 and the dry density of each specimen determined using mass, dimensions, and the moisture content of the material.
9. The average 7-day crushing strength for each batch of five test specimens made and tested in accordance with the method described herein shall be not less than 3.5 MPa for cubes. In addition to complying with the minimum strength requirements, the root means square of the coefficient of variation of the crushing strength of five successive batches of five test specimens of the cement-bound granular material shall not exceed 25 %.
If an area or layer of cement-bound granular material represented by these specimens fails these tests, the defective material shall be removed and replaced with new material at the Contractor’s expense.
V.5 Installation of Protective Membranes
1. Approved type geotextile shall be provided as mentioned in the approved drawings before backfilling.
2. Until and other mentioned in the design drawing/documents, the woven/nonwoven geotextile shall meet the minimum of the following criteria:
| Weight | 135g/m2 |
| Thickness under load (2KN/m2) | 0.7mm |
| Tensile Strength (200mm width) ASTM D1682 | 1.6KN |
| Puncture Resilience (DIN 54307) | 1.5 KN |
| Permeability | 50 liters/m2/s |
| Physical Properties | Stable against UV light |
V.6 Inspection and Testing
1. The inspection and test plan for backfilling works summarizes various characteristics to be checked. The concerned site Engineer shall be responsible to ensure stage-wise compliance for this operation. QA/QC Engineer shall carry out QC checks and reports for inspection results.
2. A sample of screened material from the site stockpile/laydown material at the site shall be collected in the presence of The Engineer and shall be sent to the approved laboratory for testing.
3. Structural Backfill/ backfill/bedding material for utility trenches shall be identified/stocked/ labeled separately at the approved location.
4. After satisfactory tests, results shall be submitted to The Engineer for approval prior to proceeding with any kind of backfilling work.
5. Copies of the nuclear gauge certificate, calibration certificate, and operator certificate shall be submitted to the consultant prior to the commencement of the works.
6. Compaction test shall be conducted by the technician in the presence of the Engineer by the certified nuclear gauge to ensure that the compaction achieves the 95% of MDD and the test result shall be submitted to the Engineer for documentation.
7. Layer thickness and testing frequency shall be as shown below table:
| Location / Material | Method of Test | Layer Thickness | Frequency | Acceptance Criteria | Reference |
| Trenches | Nuclear Density | 150mm (Compacted) | One test per every 20m | 95% | QCS 2010, Section 1, part 8, page 38, Cl 4.02 |
| Manhole, Chamber and thrust block | Nuclear Density | 150mm (Compacted) | One test per every 30m | 95% | QCS 2010, Section 8, Clause 2.3.3 |
| Backfilling around Structure | Nuclear Density | 150mm (Compacted) | One test per every 200m² | 95% | QCS 2010, Section 12, Part 3,Clause 3.5 |
Note: QCS 2010 (Qatar Construction Specifications 2010) is used as a reference here.
8. Following table illustrates the suitability requirement of general backfilling material which shall be tested and submitted for approval prior to use.
| Description | Backfill Material Requirement for Structure | Backfill material Requirement for Trench |
| Maximum Liquid Limit (%) | 35 | 35 |
| Maximum Plasticity Index (%) | 10 | 10 |
| Maximum Water-Soluble Salt (%) | 5 | 5 |
| Maximum Water-Soluble Chloride (%) | 1 | 1 |
| Maximum Water Soluble Sulphate (%) | 1.5 | 1.5 |
| Maximum Acid-Soluble Chloride (%) | 2 | 2 |
| Maximum Acid Soluble Sulphate (%) | 3 | 3 |
| Maximum Organic Matter (%) | 2 | N/A |
| Permissible Maximum Size of Soil Particles (mm) | 75 | 75 |
| Grading Requirement (Soil Passing the 0.075mm sieve) | 20% Max | N/A |
V.7 Housekeeping
Good housekeeping by the contractor shall be followed at all times to prevent the occurrence of accidents and consequent injuries.
VI. Risk Assessment and Job Hazard Analysis for Method Statement for Backfilling and Compaction Procedure- Earthwork
Please refer to the attached document in Appendix B.
VII. Permit and Licensing Requirements
Not Applicable
VIII. Drawings, Diagrams, Maps, and Survey data
Please refer to the attached document in Appendix A.
IX. Pre-Start Safety Briefing Arrangements
Refer to Risk Assessment in Appendix B.
1. Protective and Safety Equipment
All workers involved shall be equipped with adequate PPE as stated below:
a. Safety Helmet with Company Logo
b. Safety Boots
c. High Visibility Vest
d. Safety Goggles
e. Hand Gloves
f. Coveralls
2. Information to Personnel
a. Safety Induction
b. Job training
c. Superintendents Notices/Memos
d. Toolbox talks
e. START Card
3. Special Safety Requirements
a. All necessary personal/protective equipment (PPE), as well as the harness, be provided.
b. Banks man, wearing distinctive vests, shall be assigned to help operators maneuver their equipment.
c. The equipment operators shall possess the required licenses and certificates
d. Generated dust (By the end of equipment operations), shall be controlled by periodic water spraying.
e. The required permit to work by Dorsch shall be obtained prior to the commencement of work.
f. The required TSTI will be prepared prior to the commencement of work and positively implemented.
g. The project safety officer is responsible along with the project zone site engineer for ensuring that all operations are carried out with due regard to the safety of all project personnel & property.
h. No working at height issues anticipated.
i. All working activity shall comply with Client Safety Procedure
j. First Aid Material
k. General management of protection/operation hazards is to be observed
l. In case of working at night, please refer to Method Statement for Night Works
4. Emergency Procedures
The Flowchart below shows the emergency contact numbers during work:
(Attach your flowchart here)
5. Emergency Contact Numbers
(Attach your contact numbers here)
X. Supervision and Monitoring Arrangements
Construction Manager
He is in charge of all construction activities. Schedule the project in logical steps and budget the time required to meet deadlines. Inspect and review projects to monitor compliance with building and safety codes and other regulations.
Temporary Works Construction Manager
To support the project delivery teams, to support and lead the management and delivery of temporary works engineering whilst ensuring program, cost, quality, and safety objectives are achieved.
Site Engineer
The Site Engineer shall evaluate the number of materials consumed by each trade to be compared to the planned quantity.
Site Foreman
A construction foreman is responsible for supervising the workers and also doing actual construction work. The foreman monitors employees to ensure that the work is done efficiently and within quality standards.
Chief Surveyor
A Chief Surveyor ensures that surveying data are collected and recorded accurately and that all company procedures are followed by crew members.
QA/QC Engineer
The QA/QC Engineer shall monitor whether the installation works are conforming to the required quality otherwise he shall notify the Site Engineer should he find nonconformance to the ongoing activities. The Site Engineer shall immediately rectify the work to avoid receipt of NCR from the QA/QC Engineer.
HSE Engineer
The Safety Engineer shall be full-time at the site and shall frequently visit all the ongoing works at the site. All safety violations and on-conformance of the HSE Plan shall be registered and immediate action shall be done in coordination with the Site Engineer.
XI. Environment and Quality Issues
1. Precautionary Measure
All precautionary measures shall be briefed to all workers prior to commencing activity
2. Disposal Requirements
All waste shall be disposed of as per Environmental Compliance and Management Plan and as per Government approved disposal areas.
3. Inspection, Test, and Sampling
Request for Inspection and Testing will be submitted prior to and after execution of works. A mock-up sample shall be provided on-site for approval prior to execution of works where required.
4. Quality Assurance Requirements Table
Refer to Project Quality Plan
XII. Risk Assessment for Backfilling and Compaction
Refer to Risk Assessment in Appendix – B.
XIII. Reference Documentation
a. Project Specifications
XIV. List of Appendices
Appendix A: Site & Benchmark Location, Excavation Zones, and Sections
Appendix B: Risk Assessment and Job Hazard Analysis
Appendix C: Permit to Work
Appendix D: ITP and QC Formats
tag: # method statement for backfilling and compaction