SAEP-61 Geotechnical Engineering Procedures - Onshore

Engineering Procedure SAEP-61

25 November 2015

Geotechnical Engineering Procedures - Onshore Document Responsibility: Responsibility: Geotechnical Engineering Engineering Standards Committee Committee

Saudi Aramco DeskTop Standards Table of Contents

1 Scope............................................................ . 2 2 Applicable Documents................ Documents...... ...................... .................. ...... . 2 Definitions…………........................... ......................... ............ . 2 3 Definitions………….............. Introduction…………....................................... 3 4 Introduction…………..................................... 5 Instructions................................................... . 4 6 Responsibilities.………................................ .................. 12 Appendix 1 - Geotechnical Geotechnical Form Form SA-9866. SA-9866........ ......... Appendix 2 - Report Checklist............ Checklist........................ ............... ... . Appendix 3 - Geotechnical Geotechnical Report Report Request Request Form SA-9866SA-9866-1........... 1.......................... ............................. ................ Appendix 4 - Request Request to Utilize Utilize Past Geotechnical Report Form SA-9866-2. SA-9866-2...... ....... Appendix 5 - Earthworks and Soil Compaction Method Statement Checklist.................... Checklist......................... ..... . Appendix 6 - Soil Improvement Method Method Statement/Scope of W ork Checklist............. Checklist............. . Appendix 7 - Soil Improvement Final Final Report Checklist.................... Checklist................................ ....................... ....................... ............ .

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Next Planned Update: 25 November 2018 Page 1 of 21

Primary contact: Thusyanthan, Indrasenan (thusyaix (thusyaix) on +966-13-8809712 Copyright©Saudi Aramco 2015. All rights reserved.

Document Responsibility: Geotechnical Engineering Standards Committee SAEP-61 Issue Date: 25 November 2015 Next Planned Update: 25 November 2018 Geotechnical Engineering Procedures - Onshore

1

Scope This SAEP defines procedures to be followed b y Saudi Aramco Organizations, Contractors and Sub-Contractors while undertaking onshore Geotechnical related work for Saudi Aramco executed projects.

2

Applicable Documents Unless stated otherwise, the documents listed below shall be of the latest issue (including revisions, addenda, and supplements) and are considered a part of this procedure: Saudi Aramco Engineering Procedures SAEP-302

Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Engineering Requirement

SAEP-383

Approving Third Party Testing Laboratories, Geotechnical Engineering Offices and Batch Plants

Saudi Aramco Engineering Standards SAES-A-100

Surveying Coordinates and Datum

SAES-A-112

Meteorological and Seismic Design Data

SAES-A-113

Geotechnical Engineering Requirements

SAES-A-114

Excavation and Backfill

SAES-Q-001

Criteria for Design and Construction of Concrete Structures

SAES-Q-005

Concrete Foundations

SAES-Q-006

Asphalt Concrete Paving

SAES-Q-007

Foundations & Supports for Heavy Machinery

SAES-Q-009

Concrete Retaining Walls

Saudi Aramco Construction Safety Manual Saudi Aramco Safety Management Guide Guide No. 06-002-2008, Excavations and Shoring

3

Definitions Approved Geotechnical Contractor: A Saudi Aramco approved agency for performing geotechnical investigations and engineering calculations as per SAEP-383 per SAEP-383.. CSD maintains the current list of Approved Geotechnical Co ntractors. Page 2 of 21


Geotechnical File Number: A unique file number assigned by CSD to each Geotechnical Investigation upon approval of the geotechnical investigation Scope of Work. Professional Civil Engineer : A graduate Civil Engineer who has a valid Professional Engineer license, a Chartered Engineer license or PE membership with Saudi Council of Engineers. Acronyms

4

CRM

Customer Relationship Management

CSD

Consulting Services Department

SAPMT

Saudi Aramco Project Management Team

SOW

Scope of Work

UTM

Universal Transverse Mercator

Introduction This document outlines the procedures to be followed during geotechnical related work. The procedures for various geotechnical related tasks are outlined in sections 5.1 to 5.6. A summary of tasks and corresponding procedure section is provided below. Task

Procedure

1. Initiating a Geotechnical Investigation

Section 5.1

2. Submitting a Geotechnical Investigation Report

Section 5.2

3. Requesting a Past Geotechnical Report

Section 5.3

4. Requesting to utilize Past Geotechnical Report for a New Project

Section 5.4

5. Method Statement for Earthworks and Soil Compaction

Section 5.5

6. Soil Improvement Document Submissions

Section 5.6

Each of the above tasks would require submission of appropriate Forms or Checklists as outlined in sections 5.1 to 5.6 and summarized below. All Forms and Checklists are provided in Appendix. Latest electronic version of the Form/Checklists can be obtained from Consulting Services Department (CSD).

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Task

Form/Checklist

1. Initiating a Geotechnical Investigation 2. Submitting a Geotechnical Investigation Report

Appendix 1 Appendix 1 , 2

3. Requesting a Past Geotechnical Report

Appendix 3

4. Requesting to utilize Past Geotechnical Report for a New Project

Appendix 4

5. Method Statement for Earthworks and Soil Compaction

Appendix 5

6. Soil Improvement Document Submissions

Appendix 6 , 7

All geotechnical related work shall be in accordance to the Saudi Aramco Construction Safety Manual and Saudi Aramco Safety Management Guide: Excavations and Shoring. Disclaimer:

Saudi Aramco reserves the right to review and ac cept or reject reports, method statements, and designs of the contractor or designer, which shall not relieve any such contractor or designer of any contractual obligations and liabilities whatsoever and they shall bear all respective risks in relation to the adequac y and correctness of information set out in any reports by its sub-contractor and shall remain liable and responsible for any deficiency in sub-contractor’s work and its consequences on the project. Quality Assurance of Submissions

All documents submitted to CSD for review shall have qu ality assurance. Documents shall have originator name and date, reviewer/approver name, company name and appropriate signatures. Documents which are submitted to CSD without out such quality assurance shall be rejected.

5

Instructions 5.1

Initiating a Geotechnical Investigation

5.1.1

The geotechnical investigation Scope of Work (SOW) must be reviewed and accepted by CSD for all geotechnical investigations as required by SAES-A-113. A Geotechnical File Number shall be obtained by SAPMT or Saudi Aramco Proponent, using “Geotechnical Form SA-9866” (Appendix 1), prior to initiation of any field work.

5.1.2

A Scope of Work for the geotechnical investigation shall be prepared using the CSD “Scope of Work Template” (latest electronic version of

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this template can be obtained from CSD) and shall include all requirements of SAES-A-113. 5.1.3

The geotechnical investigation must be undertaken by one of the CSD Approved Geotechnical Contractors (as per the requirements of SAES-A-113 and SAEP-383).

5.1.4

The steps below shall be followed by SAPMT or the Saudi Aramco Proponent to obtain the SOW acceptance and Geotechnical File Number from CSD. Figure 1 shows the steps schematically. a)

The SAPMT or Saudi Aramco Proponent shall submit the Scope of Work document and “Geotechnical Form SA-9866” (Appendix 1) with Section A filled out to CSD via a CRM Engineering Request.

b)

CSD shall review the submitted Scope of Work document and accept it if it meets all the requirements of SAES-A-113.

c)

A letter from the geotechnical contractor endorsing the adequacy of the proposed investigation program shall be submitted to CSD to obtain the Geotechnical File Number. If the geotechnical contractor endorsement letter is not available at this stage, the accepted SOW can be used for bidding and selecting the geotechnical contractor. The selected geotechnical contractor shall then provide an endorsement letter, which shall be submitted to CSD to obtain the Geotechnical File Number.

e)

CSD shall provide the Geotechnical File Number for the investigation in “Geotechnical Form SA-9866” Section B.

Note:

It is a violation of SAES-A-113 to perform a geotechnical Investigation without a CSD-issued Geotechnical File Number.

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Figure 1 - Scope of Work Review and Acceptance Process

5.2

Submitting a Geotechnical Investigation Report for CSD Acceptance

5.2.1

The Geotechnical contractor shall submit the draft geotechnical investigation report to the Main contractor/designer for review and the revised report shall be endorsed by Main contractor/designer.

5.2.2

The Main contractor/designer endorsement letter shall state “the geotechnical report has been reviewed and endorsed as providing all the required geotechnical data, in line with the Scope of Work, for the project.”

5.2.3

The steps below shall be followed to submit the Geotechnical report for CSD review. Figure 2 shows the steps schematically. It shall be noted that the report review can take 10-15 working days.

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a)

b)

The SAPMT or Saudi Aramco Proponent shall submit the following items via a CRM Engineering Request. 1.

“Geotechnical Form SA-9866,” with Section B (SOW accepted and a Geotechnical File Number assigned by CSD) completed, and Section C filled in.

2.

Endorsement letter from the Main contractor/designer.

3.

Geotechnical report.

4.

Report Checklist (Appendix 2) fully completed by the Geotechnical contractor.

CSD shall review the submitted report and either accept it or reject it. 



If the report is accepted, the acceptance will be provided in “Geotechnical Form SA-9866” Section D. If the report is rejected, CSD comments or reason for rejection will be provided. SAPMT or the Saudi Aramco Proponent shall ensure that the report is revised to address the comments and resubmitted via a CRM Engineering Request for review and acceptance. Note:

CSD does not review reports from projects which are not following SAES-A-113.

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Figure 2 - Work Flow Process for submitting a Geotechnical Report for Acceptance

5.3

Requesting Past Geotechnical Reports from CSD

5.3.1

In order to obtain a copy of a past geotechnical report, “Geotechnical Report Request Form SA-9866-1” (Appendix 3) shall be completed by the requester and submitted via a CRM Engineering Request to CSD.

5.3.2

CSD may provide a copy of the past geotechnical report, if it is available in CSD database, with the following restrictions: 





Past geotechnical reports shall only be provided by CSD to a Saudi Aramco department/employee. CSD cannot validate the accuracy of the past geotechnical reports due to possible change in ground level (cut/fill) and/or ground water level that may have occurred since the time of geotechnical investigation and survey accuracy of the locations. Past geotechnical report contents and recommendations may not be valid or applicable to new projects even if the location of interest/new Page 8 of 21


project is same as that of the report. Formal concurrence by CSD, as detailed in Section 5.4, is required for utilizing past report content for new projects. 

5.4

Past geotechnical reports may not be legally associated with new projects due to contractual report ownership issues.

Requesting to Utilize Past Geotechnical Report Information for a New Project

5.4.1

Information from Saudi Aramco CSD accepted past geotechnical reports near a new project location can be a good source of preliminary information of the project. However, information from past geotechnical reports shall not be utilized for the detailed design in a new project unless it is recommended by the Main contractor/designer by a letter and supported by a stand-alone report produced by a CSD Approved Geotechnical Engineering Office.

5.4.2

The steps below shall be followed to obtain CSD concurrence to utilize past geotechnical report for a new project. 5.4.2.1

The SAPMT or Saudi Aramco Proponent shall submit the following items via a CRM Engineering Request. a)

Fully completed “Request to Utilize Past Geotechnical Report Form SA-9866-2” (Appendix 4).

b)

Stand-alone report from CSD Approved Geotechnical Engineering Office. The stand-alone report shall consists of below items: 









Report shall have full Quality Assurance of contractor (Contractor Name, Prepared By, Approved By, Date, Rev No. shall all be provided in first page of report). Introduction - explaining the project and structures to be built. Objective - explaining why the old reports are being used and why a site-specific investigation is not undertaken or required. New Foundation Details - Dimensions, bearing pressure of new foundations, static or vibrating loads, etc. Arial Map - Clear map with UTM coordinates showing existing borehole locations (from old reports Page 9 of 21


designated by Geotechnical File Number and boring number) and new project location (foundation/structure locations). The distance from the existing boreholes to the new project location shall be clearly marked. 







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c)

UTM reference datum used shall be cleary stated in the report (International 1924 Ellipsoid, Ain (Ayn) Al Abd 1970 or World Geodetic System 1984 (WGS84)). Summary of Soil Conditions from old report/s (soil type, soil strength and water level and relevant bore hole logs). Geotechnical Parameters - geotechnical parameters for new project design (allowable bearing capa city, design ground water level, soil type with depth, etc.). Critical Items – Main contractor shall confirm whether or not any critical issues are involved in the project (deep excavations, vibratory foundations etc.). Conclusion – All geotechnical data required for the new project shall be summarized (bearing capacity etc. for design shall be provided)

Recommendation letter from Main contractor / designer. The letter from Main contractor/designer shall state, “All required geotechnical data for the new project and structures is available in the existing past geotechnical report/s and its use in detailed design as presented in the stand-alone report is considered acceptable.”

5.5

d)

CSD shall review the “Stand-alone report” and accept or reject the use of the past geotechnical report for the new project.

e)

If the use of past geotechnical reports for the new project is not accepted by CSD, a new site specific geotechnical investigation as required by SAES-A-113 may need to be performed.

Method Statement for Earthworks

5.5.1

All earthworks and soil compaction work shall follow SAES-A-114.

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5.6

5.5.2

The review and approval of earthworks Method Statement shall be undertaken by a Professional Civil Engineer of the Main contractor in accordance with the “Earthworks and Soil Compaction Method Statement Checklist” (Appendix 5). Main contractor’s approval letter and the method statement shall be submitted to CSD for acceptance.

5.5.3

CSD acceptance is not required for earthworks less than 2 m in thickness.

5.5.4

Method Statement for earthworks and/or soil compaction shall contain all the information listed in the “Earthworks and Soil Compaction Method Statement Checklist” (Appendix 5).

5.5.5

The following shall be submitted, via CRM Engineering Request, to CSD acceptance in earthworks and soil compaction projects. 1.

Earthworks and/or Soil Compaction Method Statement.

2.

“Earthworks and Soil Compaction Method Statement C hecklist” (Appendix 5) fully completed by Profession Engineer of the earthworks contractor.

3.

A letter form Main contractor stating that the “Earthworks and Soil Compaction method statement is reviewed and approved as acceptable for the project requirements, [Main Contractor] is liable and responsible for any deficiency in sub-contractor’s work and its consequences on the project.”

Soil Improvement Work

5.6.1

The review and approval of method statements, trial report and final report shall be undertaken by a Professional Civil Engineer of the Main contractor in accordance with the “Soil Improvement Method Statement/Scope of Work Checklist” (Appendix 6) and “Soil Improvement Final Report Checklist” (Appendix 7). The Main contractor’s approval letter and the relevant documents shall be submitted to CSD for acceptance.

5.6.2

The following items shall be submitted, via a CRM Engineering Request, for CSD acceptance in soil improvement projects. a)

Prior to Soil Improvement Work Initiation 1.

Soil Improvement Method Statement.

2.

“Soil Improvement Method Statement/Scope of Work Checklist” (Appendix 6) fully completed and signed by the Profession Engineer of soil improvement contractor. Page 11 of 21


3.

b)

c)

6

Approval letter from the Main contractor stating that the “Method Statement for the soil improvement has been reviewed and approved as acceptable for the project requirements.[Main Contractor] is liable and responsible for any deficiency in sub-contractor’s work and its consequences on the project.”

During Soil Improvement Work 1.

Trial test results report with conclusive evidence to conclude that the soil improvement results are meeting the project requirement.

2.

Approval letter from the Main contractor stating that the “Trial test results have been reviewed and approved as meeting the project requirements.”

After Completion of Soil Improvement 1.

Final Soil Improvement Report.

2.

“Soil Improvement Final Report Checklist” (Appendix 7) completed and signed by Profession Engineer of soil improvement contractor.

3.

Approval letter from the Main contractor stating that the “Final Soil Improvement Report has been reviewed and approved as acceptable for the project. [Main Contractor] is liable and responsible for any deficiency in sub-contractor’s work and its consequences on the project.”

Roles and Responsibilities 6.1

Consulting Services Department CSD’s role is to act as technical reviewer to ensure that contractor’s work and documentation is technically correct and follows the applicable MSAERs. CSD’s responsibilities are: 

Review and accept geotechnical Scopes of Work.



Review and accept geotechnical reports.



Release of past geotechnical reports as information for new project.



Ensure that all geotechnical work complies with this procedure and SAES-A-113 and other relevant MSAERs.

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6.2

Saudi Aramco Project Management Team (SAPMT) SAPMT’s responsibilities are; 

To manage and communicate with all contractors.



To ensure all procedures as stated in this document are followed.



6.3

To ensure that submissions to CSD are complete with all required documentation and that Main contractor reviews of documents have been conducted prior to submission to CSD.

Main Contractor/Designer Main contractor/ designer responsibilities are: 



To manage and communicate with all subcontractors.



To ensure all procedures as stated in this document are followed.





6.4

To ensure that project is undertaken in accordance to the contract and in accordance to MSAERs.

To review and endorse all geotechnical-related reports by subcontractors prior to submission to SAPMT. To ensure that all geotechnical investigations are undertaken by CSDApproved Geotechnical Contractors.

Approved Geotechnical Contractors Approved Geotechnical Contractors’ responsibilities are: 









25 November 2015

To provide endorsement letter for SOW. To perform geotechnical investigations only after obtaining a Geotechnical File Number for CSD accepted SOW. To perform geotechnical investigations in accordance to the SOW and SAES-A-113. To produce geotechnical reports in accordance to the SOW and SAES-A-113. To ensure that the “report checklist” is fully completed and submitted with the geotechnical report. Revision Summary New Saudi Aramco Engineering Procedure. This SAEP defines procedures to be followed by Saudi Aramco Organizations, Contractors and Sub-Contractors while undertaking Geotechnical related work for Saudi Aramco executed projects.

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Appendix 1 - Geotechnical Form SA-9866 (electronic version can be obtained from CSD)

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Appendix 2 - Report Checklist

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Appendix 3 - Geotechnical Report Request FormSA-9866-1

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Appendix 4 - Request to Utilize Past Geotechnical Report Form SA-9866-2

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Appendix 5 - Earthworks and Soil Compaction Method Statement Checklist

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Appendix 6 - Soil Improvement Method Statement/Scope of Work Checklist

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Appendix 7 - Soil Improvement Final Report Checklist

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SAEP-61 Geotechnical Engineering Procedures - Onshore

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