DOC GEN PC0051 R01 a MS for Excavation Works

N/ .1(i,,(,-eiftitEr4( ISSUED

Majdi Issa Twal

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Recipient

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Essam Zahran Saudi Bin Laden

D EllisDon

Saudi Bin Laden

attn. Essam Zahran

P.O. Box 105 / PC 11411, C.R. 1010081126 Riyadh,

Project: South Border Infrastructure Project (Roads and Buildings)

Date: 16 Oct 2012 H1433/12/1

Reference: TRA-SBI-ARC-SBG-4112-2012-TS

Subject: Method Statement for Earthworks for Buildings DOC-GEN-PC0051-Rev.01 (A-Approved)

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LIST OF DOCUMENTS ISSUED

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' PROJECT NO / eJ I ei 1370 PROJECT NAME / EJ.A1Ail South Border Infrastructure Project (Roads and Buildings)

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METHOD OF STATEMENT SUBMITTAL / avl

Ref. No / t-,y.11 pi..) DOC-GEN-PC0051-Rev.01 Contract No / aill$ PiJ

Sub. To / vii matill ARCHEN Date / &Jtal 11/10/2012

DESCRIPTION / s.1,41.01 Method Statement for Earthworks for Buildings

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PROJECT NO / 1370 PROJECT NAME: South Border Infrastructure Project (Roads and Buildings) Method Statement for Earthworks for Buildings

Contractor: SAUDI BINLADEN GROUP (SBG)

Document

The Consultant: ARCHEN-ED ENGINEERING

Method Statement for Earthworks for Buildings

Rev. 1 — October 13, 2012

SOUTH BORDER INFRASTRUCTURE PROJECT (ROADS &BUILDINGS)

Contract No: 1370

No.: DOC-GEN-PC0051

Rev. No. Date Revision Details / Description Status

1 13/10/2012 Modified as per Consultant's comments --I

C 0 27/09/2012 Initial Submission.

Prepared By Reviewed By Approved For Submission By

Name: Y. Essawi Name: Y. Essawi Name: W. Nasr

Designation C.S. Mgr Designation C.S. Mgr Designation / C Mgr Cirrn=1-.“-•-• r inn-.1-•:-,-% ''Zirn:-,-!:•rRa ,

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Project Name: South Border Infrastructure Project (Roads and Buildings) Contractor name: Saudi Bin Laden Group (SBG) Owner of the project: Ministry of Interior (MOI) Location of the project: Saudi Southern Border from Najran area located at the extension from south west to south east of the kingdom of Saudi Arabia. Contractor's Consultant: Global for engineering Owner's Consultant: Archen Engineering & EllisDon Project's Code: P-1370

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PROJECT NO / 1370 PROJECT NAME: South Border Infrastructure Project (Roads and Buildings)


Table of Contents

1- Scope of Work 4

2- Soil Information and Boreholes 4

3- Dewatering 4

4- Protection and Deviation of Existing Utilities 4

5- Equipment 4

6- Materials 5

7- Site Planning and Preparation 5

8- Work Methodology 5

9- Organization, Responsibility and Supervision 6

10- Health and Safety 7

11- Quality Assurance 8

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1- Scope of Work:

This method statement identifies the general steps, arrangements and precautions which should be followed for excavation. Earthworks consist of all cleaning, grubbing, removing existing structures and old pavement, removing unsuitable material, excavating the pit for borrowed material if needed, structural excavation, and all other works that are required to construct and maintain the buildings and the facilities as per the approved design drawings and contract specifications. For trenching and backfilling works, refer to the method statement prepared for this purpose.

2- Soil Information and Boreholes:

The geotechnical subsurface soil investigation report should be reviewed prior starting earthworks on site. Boreholes profiles should be studied to identify the type of soil and the different soil strata in the area of work as well as the water table. The excavation should achieve the recommended foundation level and take into consideration the backfilling with borrowed material if recommended by the geotechnical report. In case any cavities are encountered during excavation, works should be continued until sound soil is reached.

3- Dewatering:

In case of water table is found close to the foundation level, a dewatering system should be studied and submitted to consultant for approval. The system should be maintained operational as per the dewatering report recommendations. All precautions should be taken to ensure efficient dewatering system that has no negative effects on the adjacent environment.

4- Protection and Deviation of Existing Utilities:

When the work is conducted close to inhabitant areas, there will be a possibility of existing utilities in the area of work. Attention should be given to excavation work not to damage working utilities, investigation pits shall be used for this purpose in case of absence of utilities maps. A plan of protection and deviation, if necessary, of existing utilities should be submitted to Consultant for approval prior the commencement of excavation works.

5- Equipment:

1. Bulldozer (2 Nos.) 2. Shovel (2 Nos.) 3. Trucks (10 Nos.) 4. Tower Light (4 Nos.) 5. Steel Welded Roller 6. Pneumatic Type Roller

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6- Materials:

Backfilling materials shall be of the suitable material from cut or borrowed material as recommended by the geotechnical report. For trenching and backfilling works, refer to the method statement prepared for this purpose.

7- Site Planning and Preparation:

7.1 Site management plan

The work will proceed in the sub areas in different stages according to the activities distribution.

7.2 Equipment

All the equipment will be in movable situation. Parking, maintenance, washing, oil and greasing will be outside the work areas.

7.3 Communication

Mobile Telephones will be used.

8- Work Methodology:

8. 1 Ensure having adequate number and suitable type of excavation equipment bases on the type of soil and recommendations of the geotechnical report.

8. 2 Ensure having adequate number of trained and experienced operators that enable the work to be carried out smoothly in relation with the HSE and quality requirements.

8. 3 Conduct a topographical survey and specify the Natural Ground Level with respect to the project Zero level of the buildings compound as defined in the design drawings. This shall determine in general if the work area shall be subject to excavation, backfilling or both.

8. 4 Before commencing any excavation, the type of ground in which the excavation is to be carried out shall be inve,-44 0qted and based on the various strata, the ideal method of excavation and equipment shall be arranged.

8. 5 The entire burrow area will be divided into sub-areas in order to control the site clearance processes and facilitate the clearing operation.

8. 6 The clearance will include removal of all non-natural material which include but not limited to •ii es, shrub:... etc.

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8. 7 Bulldozers will be used to for excavating the burrow area and shovels where hard layers are found.

8. 8 Excavations for buildings shall be carried out as not to endanger life or property. Cut slopes shall be in accordance to geotechnical report recommendations and approved by Consultant.

8. 9 The excavated suitable material will be loaded to the trucks by shovels and transported to the proposed batching plant area for filling processes in layers according to the method statement for filling works and as per the relevant standards.

8. 10 In case of imported borrow material is required, borrow pits shall not be located so that any edge is closer than 300.0m from backfilling toe of slope. For backfilling material, water spraying, spreading, leveling and compaction refer to method statement for trenching and backfilling works.

8. 11 Excavated material shall not be temporarily placed or stacked within 1.0m minimum of the edge of excavation area so as not to endanger persons working below. This distance is dependent on the ground type and amount of stacked material.

8. 12 Excavation depth will as indicated by the trial holes till reaching the recommended level.

8. 13 Care shall be taken not to stack the excavation materials on site in such away as to endanger structures or cause an obstruction of any kind.

9- Organization, Responsibility and Supervision:

9.1 Project Engineer

• Responsible for controlling the all civil activities & for 'the overali coordination. • Ensure that adequate facilities and equipment are provided to the work to avoid injury, health

impairment or damage & to ensure providing quality works within the planned timescale. • Organize the site so that work is carried out to the required specifications with a minimum risk

to men, equipment and materials.

9.2 QAJQC Engineer

• Responsible for the work entire quality assurance, qualit., ' '.' ' ograms. • Produce all quality related documents and reports as necessary. • Provide written procedures and method statements in coordination with the project manager

describe the job specific work for each stages / activities.

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9.3 Site HSE Manager

• Ensure that all workers have a safe place of work, advice safe system of work and provide adequate instructions, training and supervision to enable employees to work in safety.

• Provide instructions to establish safe working methods outline potential hazards at each stage and indicate precautions to be adopted.

• Carry out site survey on daily basis to ensure that the HSE methods of working are in operation and that all regulations are being observed.

• Report, determine and analyze the cause of any accident or dangerous occurrence and recommend measures for preventing recurrence.

9.4 Construction Supervisors

• Adheres to the project specific method statements, procedures, inspection programs and HSE instructions to get the activities performed as required.

10- Health and Safety

10. 1 Protective and Safety Equipment

1. Safety Shoes. 2. Safety Helmets. 3. Safety Glasses. 4. Hand Gloves (as required). 5. Dust Masks (as required).

10. 2 Information to Personnel

A pre task briefing will be carried out detailing the following information:

I. Tasks assigned to each person. 2. Traffic Management / Safety. 3. What to do in the event of a first aid injury or other incident. 4. Heat stress advice / warning.

10. 3 Emergency Procedures

In the event of an accident or incident, the following procedure shall be followed:

1. Immediately send first aider to the s-zene 2. Stop all other activities in the vicinity

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Method Statement for Earthworks for Buildings 3. Remove or isolate any immediate dangers ONLY if safe to do so 4. Inform the emergency services regarding the location, type and nature of the incident including

casualty details 5. Cordon the area to prevent the scene being further disturbed (to aid investigation) 6. Give assistance as requested to the emergency services 7. Photograph the scene 8. Take statements from witnesses 9. Carry out incident investigation

11- Quality Assurance:

11. 1 Critical Works

Ensure that setting out and survey works are done in accordance with the relevant drawings, utilizing survey instruments having valid calibration certificates.

11. 2 Inspection & Testing

Refer to the inspection and test plan

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Documents

DOC GEN PC0051 R01 a MS for Excavation Works