NEEDS STATEMENT

FOR

DESIGN AND BUILD WORKS

(Structural and Geotechnical Engineering Requirements

For Buildings Projects)

KULIYYAH TEKNOLOGI MAKLUMAT & KOMUNIKASI (ICT)

UNIVERSITI ISLAM ANTARABANGSA MALAYSIA (UIAM)

KAMPUS GOMBAK, SELANGOR

Structural/GeOTECHNICAL Engineering Requirements

CONTENTS PAGE

GENERAL 5

1.0 Scope of Works 5

2.0 Special Requirements 5

3.0 Criteria for Independent Checker & Scope Of Services 6

4.0 Design Criteria 8

5.0 Standards and Codes Of Practice 8

7.0 Anti-Termite Treatment 9

8.0 Materials And Workmanship 11

9.0 Contractor's Proposal 12

10.0 Samples 12

11.0 Compliance To Rules And Regulations 13

12.0 Standard Specification 13

13.0 Material Testing Laboratory And Staff (If Required) 13

14.0 Supervision, Inspection And Test 14

15.0 Covering of Works 15

16.0 As-Built Drawings 15

17.0 Drawings And Calculations 15

18.0 Quality Assurance Plan 15

19.0 Submittals 15

20.0 Familiarisation with Site and Local Conditions 16

Obligation of Contractor and Consultant On Safety on Site and Adjoining Properties 16

STRUCTURAL, GEOTECHNICAL AND FOUNDATION WORKS 19

1.0 General 19

2.0 Design Consideration 19

3.0 Geotechnical Works 21

3.1 General 21

3.2 Excavation 21

3.3 Filling and Embankment 22

3.4 Ground Treatment 22

3.5 Retaining Structures 23

3.6 Slope Drainage System 23

3.0 Foundation 24

3.7 Foundation 24

3.8 Geotechnical Design Requirements 24

3.9 Instrumentation 27

4.0 Structural Works 28

DEMOLITION WORKS 31

1.0 Scope of Works 31

2.0 General 31

Planning 31

Precautionary Measures 32

5.0 Methods of Demolition 32

Special Structural Elements/Features 32

Site Supervision And Inspection 32

Removal Of Debris And Making Good 33

RENOVATION WORKS/ REHABILITATION WORKS 35

General 35

2.0 Assessment of Structures 35

Analysis and Structural Design 37

ATTACHMENT:

ATTACHMENT A – SOIL INVESTIGATION REPORT

ATTACHMENT B – SCHEDULE FOR WORKS SUBMISSION ITEMS/DOCUMENTS

ATTACHMENT C – APPENDIX 1: TYPICAL DESIGN CRITERIA FOR GEOTECHNICAL WORKS

GENERAL

GENERAL

1.0 Scope of Works

The Works shall cover planning, design, construction, supervision, testing, commissioning and maintenance thereof for the period on the following works:-

1. Kuliyyah Administration Main Office

2. Head of Department’s Office

3. Centre for ILM

4. Centre for IT Advancement (CITA)

5. IT Unit

6. Lectures Room (Staff Facilities)

7. Academic Facilities – KICT Resource Centre, Multi-Purpose Hall, Main Lecture Theatre, Lecture Room, Conference Room, Computer Labs, Multimedia Studio & Research Unit

8. Students Facilities – Assembly Plant, Students Activity Room, Musolla & Postgraduate Students Facilities

9. Common & Other Facilities – Business Centre, Control Centre & Supporting Areas

2.0 Special Requirements

2.1 All Works with respect to investigations, design, construction and maintenance shall comply with all the Government Requirements regulations and by-laws.

2.2 All engineering investigations, design, construction, and supervision shall be carried out, developed and refined by the Contractor who shall engage qualified Consultants or P.E.s’. (Professional Engineers registered with the Board of Engineers, Malaysia) for the relevant disciplines of the Works. The Contractor shall undertake to do all detailed drawings and alterations as and when necessary at no cost variation to the accepted Tender Sum.

2.3 Prior to the engagement of a qualified Consultant or P.E.s’ as the Independent Checking Engineer (referred to as the Checker hereinafter) for this project, the Contractor shall submit and propose a minimum of 3 names to JKR for approval. The Checker shall

take full responsibility for integrity, thoroughness and competence of his report and recommendation that it has been adequately carried out in accordance with the accepted engineering practice and to ensure the structural integrity and stability of the proposed construction. The Checker’s criteria and scope of services shall be referred to the relevant clauses below.

2.4 All designs of the Works named herein shall optimally satisfy the requirement of the latest standard engineering practice in respect of functional adequacy, safety, robustness, suitability and effectiveness, and if required, shall be approved by the local and the central authorities. The design must also be in the best layout with most suitable material to give the best economic value and good aesthetic looking.

2.5 All building dimensions shall apply the concept of Modular Co-ordination System.

2.6 All engineering and shop drawings prepared and signed by P.E.s’ engaged in the design and supervision of the works shall be submitted to Project Director and/or the Local Approving Authorities.

2.7 The onus of obtaining timely approval from each relevant Local Approving Authority for each design drawing shall be the Contractor’s responsibility. Untimely receipt of approvals which may affect the Contractor’s design/construction program shall not in any way be a basis/cause for consideration of time extension or variation to the Contract.

2.8 The Contractor shall submit detailed design for all aspects of the Works mentioned in Clause 1.0. Progressive changes, if any, in the design process shall also be supported by design calculations and subjected to the Project Director’s approval.

2.9 The Contractor shall need to include the Design Development Plan (DDP) in the CPM to be submitted to the PD. The DDP shall include all the design phases in detail.

2.10 All design calculations shall be prepared and signed by the respective P.E.’s. The calculations shall be submitted to the Project Director.

2.11 Approval or acceptance by the Project Director or the Local Approving Authority of the Consultants drawings and design calculations shall not relieve the Contractor of his responsibilities and liabilities in the design.

2.12 Within 2 weeks from the date of issuance of Letter of Acceptance (L.A), the Contractor shall submit his program indicating progressive interactive submission and approval.

3.0 Criteria for Independent Checker & Scope Of Services

3.1 Checker Professional Requirements

The names and professional qualifications of at least one individual expert for the field of structural, geotechnical and civil disciplines respectively shall be committed by the contract for JKR approval.

The experts shall have at least 10 years of working experiences at the professional level in their respective design works or have published several technical papers in their specialised fields (not less than 5 technical papers in National/international seminar, conferences or journals); and by virtue of professional standing and experiences, deserving of such a designation.

The Checker shall not have any financial or professional interest in the project he is undertaking such related materials. The report may include the checkers suggestion, amendments, alternative solutions and designs for amendments and or alternative solutions.

3.2 Scope of Services

The Checker shall issue a certificate in respect of the plans relating to the structure, geotechnical, civil and associated Works stating that, to best of his knowledge and belief, the plans so checked do not show any inadequacy in the design and details of the key elements.

He shall evaluate, analyse and review the structural, geotechnical and civil design and details in the plan and perform such original calculations with a view to determine the adequacy of key elements.

He shall verify that the key elements designed are consistent with general layout shown and in any amendments there to.

The Contractor shall ensure sufficient working drawing details and specifications shall be made available to the checker.

The checker in carrying out this, is required to (but not limited) :

determine and use of the Code of Practice, Design Standards and JKR Arahan Teknik in the plans

check the design loadings

check the standards and specifications of materials to be used

ascertain the design concept used and identify the key elements

check the structural, geotechnical and civil detailing, and

determine the adequacy of other aspects of the design which are peculiar and other associated structures to be built and which are essential to the structural integrity of the Works.

3.3 Reporting of the Independent Checker

The checker’s report shall be submitted in writing to JKR within 2 week’s of the Independent Check being done or otherwise as agreed in writing.

The report shall specifically describe the deficiencies, potential or real, which have been identified along with the relevant references to accepted standards, practices and design principles. The point shall be illustrated wherever practicable by marking-up the plans or with sketches, drawings and such related materials. The report may include the checkers suggestion, amendments, alternative solutions and designs for amendments and or alternative solutions.

4.0 Design Criteria

4.1 The Works shall be designed by the Consultants engaged by the Contractor in accordance with the particular design criteria or design methods as stated in the design statements. In the absence of any such statements for any design aspect or any design element, it shall be the responsibility of the Contractor to adopt well-known and internationally accepted updated edition of the Codes of Practice/ Standards/ criteria and method in the design.

4.2 All design criteria shall be subjected to the acceptance of the Project Director with the submission of the necessary justification-implication by the Contractor.

4.3 The design concept shall adhere to that shown in the drawings.

5.0 Standards and Codes Of Practice

5.1 Codes of Practice and Standards adopted to cover design, materials workmanship, performance, etc. shall be relevant Malaysian, British or International Codes of Practice or Standards.

5.2 The design and construction of the Works shall be professionally undertaken by the Contractor. The Contractor shall comply with the requirements of relevant Malaysian Standards/British Standards and Codes of Practice.

5.3 The order or preference of Codes of Practice and Standards shall be Malaysian, British and followed by any other approved International Codes of Practice or Standards. Where British Codes of Practice or Standards are quoted in the Specifications, these shall be substituted by equivalent Malaysian Codes of Practice or Standards where available. Should there be any conflict in the Codes of Practice or Standards requirements, then unless otherwise approved by the Project Director, the more stringent criteria are to be adopted.

5.4 The Contractor shall adopt the latest edition of each Standard/Code of Practice as at the time of award of Tender, notwithstanding the reference year of the edition of that stated in the Standards/Codes of Practice in the ensuing Clauses of this Specification.

6.0 Soil Investigation

6.1 The contractor shall (if necessary) carry out sufficient soil investigations prior to commencement of any engineering design. Subsurface investigation shall be carried out to determine the properties and stratigraphy of the soil. The subsurface information shall be sufficient for geo-assessment and geotechnical design works. The Contractor shall be allowed site investigation to be carried out at design stage. The Contractor shall carry out desk study, search for reports on geotechnical and engineering conditions carried out for the purpose of engineering design.

JKR may provide the preliminary soil investigation result for the sole purpose of guiding the Contractor to provide the following costs estimate:

i. To determine the construction measures to be adopted by the Contractor, including temporary works, and

ii. Design considerations for all geotechnical works including foundation system for buildings, equipments and plant etc.

JKR will not be responsible for any inaccuracies of the soil data presented prior to tender.

If the Contractor is of the opinion that additional geotechnical data is necessary for the successful implementation of the project, he shall include in the submission of the tender his proposed program of soil investigation, supported by full technical justification, for review and agreement by the Project Director.

6.2 The Factual Soil Data of all soil investigations and details and results of laboratory testing undertaken by the Contractor shall be submitted to the Project Director.

6.3 The Contractor shall comply with the Rules and Regulations and By-Laws of Local Authorities in executing the soil investigations works to ensure complete safety and harmony with the surroundings to the satisfaction of the Project Director.

7.0 Anti-Termite Treatment

7.1 The contractor shall control the subterranean termite infestation to all of the proposed buildings and structures in the Contract.

7.2 The termite control treatment application shall be carried out by a reputable specialist soil treatment company approved by the Project Director.

7.3 The standards and procedures of anti-termite treatment shall comply with the recommendations of the Pesticides Board of Malaysia (LRMP), National Certification of Conformity from the Australian Building Codes Board (ABCB), the National Pest Control Association of America, the British Pest Control Association or the relevant local regulations governing such treatment where applicable.

7.4 The treatment method shall be submitted to the Project Director for record. All relevant documents, certificate of approval, guarantee letter, brochures and technical catalogues shall be submitted to the Project Director before commencement of works.

7.5 The recommended chemical shall meet with the approval of the Pesticide Board of Malaysia and has an effective residual period of period recognised by the Pesticide Board on normal soil. All applications shall strictly adhere to standard safety measures and shall be in accordance to sound environmental practice.

7.6 The chemical recommended shall not have any detrimental effects whatsoever on human beings, animals or materials used in the construction of the substructure especially the reinforced concrete works and waterproofing materials etc. The chemical shall be environmentally friendly. Termiticide shall be ‘imidacloprid’ or equivalent which is approved by Pesticides Board of Malaysia (LRMP). The dilution and application rate will strictly be in accordance with the product label and manufacturer’s recommendations.

7.7 All loose timber, wood shavings and other cellulose-bearing materials shall be removed from build-on areas before the application of termite control treatment.

7.8 Areas of anti-termite treatment shall include the following:

i. Impregnation of excavated surfaces around the pile caps/stumps or prior to laying of lean concrete for footings,

ii. Impregnation of ground beams boards and columns with termiticidal mixtures,

iii. Impregnation of surfaces below ground floor slab areas after the hardcore has been laid but prior to the casting of concrete slab. Application of termiticide mixtures shall be made the same to the underside of suspended ground slab.

iv. Impregnation of surfaces below apron/terraces and areas within 1.5 metre beyond the edge of the building apron/terraces.

v. Any other surfaces or areas through which termites’ infestation are likely to occur.

7.9 Soil treatment shall not be carried out when the soil is saturated or excessively wet (for example, during or after rainfall) or when it is likely to rain.

7.10 On completion of soil treatment, the treated soil shall be cast with a layer of lean concrete or ground slab. Soil treatment and concreting shall be carried out on the same day or the following day, the latest.

7.11 Soil treatment shall be repeated when the condition prevails in the event that any areas that have been treated is affected by water or the rain before concreting works commences or has been completed.

7.12 The termite control treatment shall be a replenishable system. The approved chemical shall be replenished periodically in accordance to the liquid termicide manufacturer’s recommendations. The Contractor shall include the replenishment program of suitable termicide in the planned preventive program (PPM).

7.13 The piping used for the replenishable system shall be of the standard UPVC High Pressure Class 15 pipe conforming to AS 1477.1 (or local equivalent) and UPVC High Pressure Class 18 fittings conforming to AS 1477.2 (or local equivalent) and installed in accordance with the required standard.

7.14 The Contractor shall provide a warranty for a minimum period of five (5) years commencing from the completion date of treatment. The Contractor shall allow for annual inspection to the treated areas and carry out remedial treatment whenever necessary without additional charges.

8.0 Materials and Workmanship

8.1 All materials to be incorporated in the Works shall be new and the workmanship throughout the work shall be of high quality. Unless otherwise specified, all materials and workmanship shall comply with JKR Standard Specifications for Building Works 2005 as the minimum criteria, Malaysian Standards and with all relevant Specifications and Codes of Practice.

8.2 The Contractor shall provide the necessary facilities for any tests and inspections and arranged for certification as specified in the JKR Structural Steel Work and/or deemed necessary by the Project Director.

8.3 Whenever in the Specification any proprietary materials are specified such are to be deemed as being the minimum standard/quality acceptable, alternatives of such materials may be considered for acceptance by the Project Director provided they comply in all aspects with strength, size appearance and quality to that specified. The Contractor shall submit to the Project Director, proof and proper technical evidence of such alternative material to substantiate their compliance with the Specifications. The Contractor shall comply with the requirements of all tests deemed necessary by the Project Director for such alternative material. The Contractor is responsible for all such test implications, cost-wise and time-wise.

8.4 All categories of workmanship such as welding, bolting, accuracy of fabrication, erection and accuracy of erected steelwork shall comply with the JKR Structural Steel Work specifications.

8.5 Approval or acceptance by the Project Director of materials and workmanship shall not relieve the Contractor of his responsibility under the Contract for the quality of materials and standard of workmanship required in the Works.

9.0 Contractor's Proposal

The Contractor's proposal for the Works shall include the following details and information:

i) Description on the Scope of Works.

ii. Conceptual drawings of the structures and layout plans denoting the limit of works including detail sections or components of the system wherever necessary.

The design proposal shall be professionally developed and refined to meet its proper functions. The functions shall include:-

o Environmental conditions which may affect the design of the structure.

o The strategy and methodology for the coherent detailed design.

o Any associated works, temporary or otherwise, deemed necessary for the proper execution of the final permanent works, the cost of these associated works having been already included in the pricing for the Works.

The Contractor shall undertake to do all the alterations to the detail working drawings prior to construction at no cost variation.

iv) Design criteria, loading data, design standards and calculations, wherever

appropriate.

v) Materials and Components Specifications.

vi) Works Specifications.

vii) Original technical information for all proposed system.

viii. Project Quality Assurance which shall include procedures for selection, testing of materials, acceptance of works, remedial of defective works etc.

10.0 Samples

The Contractor shall submit samples of materials together with supporting technical information for approval prior to incorporating them in the Works and as when required. Where so directed test certificates shall be produced. All samples which are approved shall indicate the standard to be maintained in the execution of the Works. Materials which are rejected shall not be used in the Works.

11.0 Compliance to Rules And Regulations

11.1 All Works shall be in accordance with good engineering practice and shall comply with the By-Laws and latest Rules and Regulations of all Approving Authorities. A copy of all correspondences with approving authorities shall be extended to the Project Director.

11.2 Prior to the commencement of the construction works and handing over at the end of the contract period, approval from all Relevant Authorities must be obtained.

11.3 All designs and drawings shall be prepared by P.E.s’. Detail working drawings, workshop drawings and amendments etc shall be submitted and agreed by the Project Director prior to construction or fabrication.

11.4 The functional adequacy and professional liabilities of the design shall be the sole responsibilities of the Contractor.

12.0 Standard Specification

12.1 The following standard specification, as listed:

JKR Standard Specification for Building Works 2005,

JKR Standard Specification for Roadwork (JKR/SPJ/1988),

JKR Standard Specification for Bridgeworks,

JKR Standard Specification for Structural Steel Work (JKR 200600-0019-99),

Standard Specification for Prefabricated Timber Roof Trusses (JKR 20600-0020-99), and

Standard Specification for Cold Formed Roof Trusses (JKR 20600-0022-2001),

Including any relevant amendments there of, shall be adopted by the Contractor. Where the words Superintending Officer or S.O. appear in the Standard Specifications they shall be taken to mean the Project Director.

12.2 For works which are not covered by the Standard Specifications and for any details where the Contractor deems necessary to make modifications, the Contractor shall submit addendum to the Standard Specifications in his proposal, giving complete details of the proposed specification or modifications.

13.0 Material Testing Laboratory And Staff (If Required)

13.1 The Contractor shall provide, maintain and staff a laboratory at the site throughout the duration of the contract. Earthworks, road works, concrete and structural works etc. shall not commence until the laboratory and staffs have been equipped. The laboratory shall be staffed with a full time competent technician well experienced in material testing.

13.2 The Contractor shall provide all testing equipments necessary to carry out any test requirements for earthworks, roadwork, concrete and structural works etc. The Contractor shall carry out test on materials and a complete record of all test results shall be kept up to date by the Contractor.

13.3 Without limiting the Contractor’s responsibility as above, the facilities of the laboratory shall be available for the use of the Project Director who may wish to perform control tests on the workmanship and materials.

13.4 Testing which are specifically required by the Standards/Codes of Practice to ensure compliance with the contract but cannot be done in the site testing laboratory shall be carried out at approved laboratory and the cost incurred shall be borne by the Contractor.

14.0 Supervision, Inspection And Test

14.1 The Contractor shall employ a Supervision Team. The Supervision Team shall be headed by P.E.s’ who is solely responsible for the supervision, quality control, certification of tests etc.

14.2 For the case where laboratory at site is not provided, all tests which are specifically required by the Standards/Codes of Practice to ensure compliance with the contract shall be carried out at Kumpulan Ikram Sdn Bhd. (KISB) or at an approved laboratory and the cost incurred shall be borne by the Contractor.

14.3 The Project Director may at any stage of the Works carry out, inspection, measurement and tests on any part of the Works to ensure compliance with the contract. The Contractor shall provide the necessary attendance whenever required by the Project Director.

14.4 The Consultant Engineer appointed by the Contractor shall be responsible for the supervision of the civil and structural works including certifications of all works as provided in the Scope of Work.

14.5 The Consulting Engineer appointed by the Contractor will ensure that the supervisory staff is stationed at the site as soon as the construction works commences and at all time until the construction is completed.

14.6 The Contractor shall follow strictly the instructions issued by the Project Director in carrying out the supervision of the works.

14.7 The Consulting Engineer appointed by the Contractor shall show proof of the validation of the design inputs

15.0 Covering Up Of Works

15.1 Before any part of the Works is permanently covered up, the P.E.s’ shall certify in writing that the work have been inspected by him and completed as per contract and all necessary quality control tests have been carried out and passed. A copy of the quality control test results shall be submitted to the Project Director.

16.0 As-Built Drawings

16.1 All as built drawings are to be duly prepared, updated and maintained throughout the contract period. All such drawings duly dated where applicable and duly certified by P.E.s’ shall be submitted to the Project Director not later than three (3) months after the completion of the construction works and at the time of handing over of the buildings. The as-built drawings shall be in the format as follows:

i) Original Tracing.

ii) Three (3) bound sets of drawings/prints in A1 size.

One (1) full set of P.E. endorsed drawing in DVD/CD format (at the time of handing over of the buildings only).

17.0 Drawings And Calculations

The Contractor shall submit the followings:-

i) Drawings showing general arrangements and detail of the design.

ii) A design report describing the design criteria, calculation and methods of construction, full detail of analysis and design.

iii) Specification.

18.0 Quality Assurance Plan

The Contractor shall submit to the Project Director detailed Quality Assurance Plan prior to the execution of the Works. Each and every Quality Assurance Plan shall conform to the requirements of the International Standards Organization standards.

19.0 Submittals

19.1 The Contractor shall prepare and submit TWO (2) copies of complete sets of detailed design documents for all permanent and temporary works to be reviewed / approved by the Project Director.

19.2 The detailed design documents shall include, but not limited to the following:

1. A Report on Design criteria, Codes of Practice and Standards used.

(b) Design calculation sheets, including computer input and output, if any, (where computer software used in the analysis is not available in the market, the Contractor shall demonstrate the accuracy of the software, and a copy of such software shall be made available to the Project Director for verification and checking).

(c) Design/working drawings including notes and symbols.

(d) Catalogues and other relevant information necessary for the Project Director to review the design documents.

(e) Loading data sheets which shall include the data to be supplied by the suppliers of special building components to verify the loading used in the structural analysis.

(f) Method Statements for the construction operation of permanent and temporary works.

(g) Additional Design / work specifications, other than specified in 11.0

(h) An outline of the method of erection envisaged by the Contractor, giving the sequence for erecting the structure taking into account any phasing of the Works.

(i) Define the responsibilities at the interface between the steelwork and other trades.

19.3 All the above must be endorsed by the P.E.’s in the relevant fields.

19.4 Guidelines on the item to be submitted and included in the Pre-bid Document is listed in the Schedule for Works Submission Items in Attachment B. The schedule is to serve as a guide on the basic items to be submitted by the Contractor. The Contractor should consider and include all other items as required in the Need Statement.

20.0 Familiarisation with Site and Local Conditions

The Contractor is deemed to have visited the site and familiarised himself with all site and local condition that pertain to the successful design and execution of this work. The Contractor shall take all necessary precautions during the construction works so as not to affect any surrounding buildings, structures and roadwork.

In addition to this, the Contractor shall familiarise himself with basic requirements and needs of the design as illustrated in the Architect’s drawings and specifications.

21.0 Obligation of Contractor and Consultant On Safety on Site and Adjoining Properties

The Contractor and Consultant shall ensure adequate safety on site and to the adjoining properties. The Contractor shall ensure the full compliance to the requirements of the Local Authority, Jabatan Keselamatan dan Kesihatan Pekerja and the Project Director.

SECTION A

STRUCTURAL, GEOTECHNICAL

AND

FOUNDATION WORKS

STRUCTURAL, GEOTECHNICAL AND FOUNDATION WORKS

1.0 General

The design and construction of all Structural, Geotechnical and Foundation Works, and related services shall follow good engineering practice and shall comply with the requirements of the relevant Authority in terms of design standards and parameters. The Contractor shall comply with the latest By-Laws and latest Rules and Regulations of all Approving Authorities. A copy of all correspondence with Approving Authorities shall be submitted to the Project Director.

All design and build works shall accommodate and satisfy the Architect’s requirements and drawings.

2.0 Design Consideration

2.1 All structures shall be designed for the worst combination of loadings and additional loads, if any. All loads mentioned shall be combined in the most unfavorable way for design of structural member and for stability check of the whole structure.

2.2 The structural design shall adopt the Modular Co-ordination approach using preferred dimensions of beams and columns so as to produce repetitiveness and regularity in the structural components. Similarly, the approach shall also be adopted for the pre-cast component of beams and slabs.

2.3 All design must be based on the Industrialised Building System. The minimum IBS content for this project is fixed at 50% based on the Manual IBS Content Scoring System (IBS Score) by CIDB. The Contractor must ensure that all M&E works are well coordinated with the structural components.

2.4 The allowable deflections and vibrations under serviceability limit state shall be determined in accordance with the nature of the design and recommendations of the relevant Codes of Practice and Standards.

2.5 The design for a particular structure shall take account of the conditions of exposure, quality of materials, quality of workmanship and other factors which will influence the durability of the building.

2.6 The following main Codes of Practice and Standards shall be applicable for all structural and geotechnical engineering works:

(i) B.S. 1377 : Methods of Test for Soil for Civil Engineering.

(ii) M.S 2038 : Code of Practice for Site Investigation

(iii) B.S. 5930 : Code of Practice for Site Investigation.

(iv) M.S.1056 : Method of Test for Soils for Civil Engineering Purposes (Part 1 – 9)

(v) M.S. 1756 : Foundations – Code of Practice

(vi) B.S. 8004 : Foundations – Code of Practice

(vii) M.S. 1754 : Code of Practice for Earthwork

(viii) M.S. 1195 : Code of Practice for Structural Use of Concrete

(ix) B.S. 8110 : Structural use of concrete.

(x) The latest Uniform Building By-Laws (Malaysia).

(xi) M.S 145 : Steel Fabric for the Reinforcement of Concrete.

(xii) M.S. 146 : Specification for Hot Rolled Steel Bars for the Reinforcement of Concrete.

(xiii) B.S. 6399 : Design Loading for Buildings

Part 1: Code of practice for dead and imposed loads.

(xiv) M.S. 1553 : Code of Practice on Wind Loading for Building Structure

(xv) B.S. 5950 : Structural Use of Steelwork in Building.

(xvi) B.S. 499 : Welding Terms and Symbols.

(xvii) M.S 1064 : Guide to Modular Coordination in Buildings

(xviii) M.S. 523 : Specification for Concrete Including Ready-Mixed Concrete.

(xix) BS EN 12056-3 : Gravity Drainage Systems Inside Buildings. Roof Drainage, Layout and Calculation

(xx) BS 8000-4 : Workmanship on Building Sites. Code of Practice for Waterproofing

(xxi) BS 8081 : Code of Practice for Ground Anchorages

3.0 Geotechnical Works

3.1 General

The Contractor/Consultant* shall study and search all report on geotechnical conditions and engineering works that have been carried out. The contractor/Consultant* shall undertake further details of soil investigation for the purpose of geotechnical engineering design and construction works

The following main Codes of Practice and Standards shall be applicable for geotechnical engineering works:

(i) B.S. 1377 : Methods of Test for Soil for Civil Engineering.

(ii) M.S. 1056 Methods of Test for Soil for Civil Engineering

(iii) M.S 2038 : Code of Practice for Site Investigation

(iv) B.S. 5930 : Code of Practice for Site Investigation.

(v) M.S. 1756 : Foundations – Code of Practice

(vi) B.S. 8004 : Foundations – Code of Practice

(vii) M.S. 1754 : Code of Practice for Earthwork

3.2 Excavation

3.2.1 The contractor shall comply with all statutory requirements such as payment of royalties, environmental protection of removal surplus material to his own dumping area if dump sites are not designated.

3.2.2 Adequate temporary design on deep excavation and protection to adjacent structures and employees working in an excavation shall be provided

3.2.3 Minimum factor of safety of not less than 1.5 is required in the design of excavation protection system such as strut, brace, sheet pile,

3.2.4 The protection system and materials to be used are subjected to the approval of the Project Director. It shall be removed if no longer needed or it may be left in place if required with permission of Project Director. Repair of damage caused by any subsidence is the responsibility of the Contractor.

3.2.5 In pumping out water/ Dewatering, the contractor shall take into consideration with regard to stability and settlement of all adjacent structures due to the lowering of the water table..

3.2.6 Adequate safety measures shall be provided and to comply the requirement of relevant local authority’s e.g. signage, hording, barriers etc.

3.3 Filling and Embankment

Materials used in the construction of fills and embankments shall, as far possible be those excavated from adjacent cuts. Rock excavated from the cuts may be used as material for fills if they are crushed to acceptable grading envelopes, with maximum size of individual pieces not greater than 100mm. drying out of the fill material during hauling and handling from cut to position of placing shall have to be allowed for.

In general, fill material shall be graded granular soil unless otherwise approved by the Project Director. The compacted fill shall have dry density of not less than 90% (for cohesive material if allowed to be used by the Project Director) and 95% (for cohesion less material) of its maximum dry density determined in the B.S. 1377 Compaction Test (4.5kg rammer method).

3.4 Ground Treatment

Ground improvement methods shall enable the works to be carried out in the time frame provided and cost effective. If the ground needs to be improved, environmental friendly ground improvement methods should be adopted.

The Contractor/Consultan* has to submit the following documents to the Project Director for review and approval prior to construction:-

1. Analysis and Design Report which includes :-

o Summary of SI resultso Design parameters together with plots, figures and tables

o Design assumptions including justifications and references

o Analysis and design methods

o Detailed results and summary of the analysis

o Detailed design calculations

o Drawing and plots

2. Method Statements that include :-

Method and sequence of construction clearly illustrated

Equipment and materials needed

Specification of the method not covered in the standard specification

* Contractor for Design & Build Contract

Consultant for Conventional Contract

All submission shall be in the format agreed by the Project Director. The submission must also be certified by a Geotechnical Engineer registered as a Professional Engineer with the Board of Engineers Malaysia. Any query by the Project Director has to be clarified prior to works. The Project Director reserved the right to reject the proposal if the query is not satisfactory clarified. The review and approval of the proposal by the Project Director do not relinquish the Contractor of the responsibility to make good any failure or defects due to the construction method used by the Contractor and this shall be at the Contractor’s own cost and time

3.5 Retaining Structures

Any proposed system of retaining structures shall be technically appropriate, cost-effective and aesthetically pleasing. The system shall have been successfully implemented in similar accepted conditions with proven case history.

The design shall be design according to BS 8006:1994. The types of foundation for the reinforced structures shall be design based on the subsoil profile and geotechnical properties of the subsoil at each location. Typical foundations are driven piles and micro piles. Typical design criteria to be complied with are shown in Appendix 1.

Load or bearing tests can also be carried out to assess the foundation capacity.

3.6 Slope Drainage System

3.6.1 Berm Drain

Berm drain shall be design to have sufficient capacity to undertake the surface runoff base upon 100 years return period rainfall. Function of berm drain is to minimized water infiltration, surface erosion and design to provided self cleansing velocity (eg V-shape cast in-situ concrete drain)

3.6.2 Cascading Drains

Cascading drains in slope faces shall be provided in addition to normal cut off drains at the top of slope and berm drains. Cascading drains shall be provided for all 1:1.5 cut slope surface and all fill slope surfaces which have 1:2 or steeper gradient.

3.6.3 Subsurface Drains

Subsurface drains such as horizontal drains or drainage blankets shall be provided for cut and fill slopes and for areas where the groundwater/perched water table is found to be high.

3.7 Foundation

3.7.1 The selection of suitable foundation types shall be so chosen to suit the actual soil conditions vis-à-vis the type of structures to be constructed. Tanalised timber piles and bakau piles shall not be used in any foundation works.

3.7.2 Pile size of less than 150 mm shall not be used.

3.7.3 The foundations of the buildings shall be designed to safely sustain and transmit to the ground the design loads, in such a manner as not to cause any settlement beyond that which would impair the stability of, or cause damage to, the whole or any part of the buildings or of any adjoining building works.

3.7.4 Foundation design shall ensure that foundation movements are within limits that can be tolerated by the proposed structure without impairing its function.

3.7.5 All foundations shall be designed to provide sufficient factor of safety to support the design loads.

3.7.6 A bearing capacity factor of safety of not less than 3.0 shall be applied in the design of shallow foundation including strip, pad or raft foundation. In the design of deep foundation including pile foundation, a factor of safety of not less than 2.0 for skin friction and 3.0 for end bearing shall be applied.

3.7.7 A tensile capacity factor of safety of not less than 2.0 shall be applied in the design of shallow or deep foundation.

3.7.8 Tolerances shall be allowed in the design of the foundation works to cover for reasonable inaccuracies in positioning of them during construction.

3.7.9 The effect of negative skin friction on piles due to surcharge over soft and compressible soils shall be incorporated in the design of deep foundation

3.7.10 The selection of pile and installation method shall take into consideration the environment constraints such as effecting to adjacent structures, build-up areas,

heritage buildings, hospitals, schools etc. The Contractor shall be responsible of any damages to adjacent structures and utilities arising due to his negligence.

3.8 Geotechnical Design Requirements

3.8.1 Stability Design for Slopes

3.8.1.1 Factor of Safety

The short term and long term stability of the fill and cut slope have to be checked. During construction, the short term stability shall be analysed using the Total Stress Strength Parameters like undrained shear strength (Su) for cohesive materials. Stability analysis using the Effective Stress Strength Parameters like C’ and ’ shall only be carried out to check for the factor of safety against failure in long term and for granular cohesionless materials only.

The stability of the fill and cut slope is to be assessed using limit equilibrium analysis for both circular and non-circular failure surfaces. The following methods can be used such as but not limited to :-

1. Simplified Bishop’s Method (Bishop, 1955 and Janbu et.al., 1956)

o For Circular Failure Surface

2. Janbu’s Method (1972)

o For Non-Circular Failure Surface

3. Morgenstern & Price (1965)

o For Non-Circular Failure Surface

4. Sarma (1979)

- For Non-Circular Failure Surface.

Both circular and non-circular failure surface shall be checked. The shear strength of soils shall be based on the in-situ and laboratory testing carried out. The slopes shall be designed using lower bound shear strength parameters against failure. However, the Contractor’s / Consultant’s * choice of the parameters does not absolve him of his responsibilities under the Contract.

Factor of safety for slope shall be greater than value given in Appendix 1: Typical Geotechnical Design Criteria.

3.8.1.2 Fill Slopes and Embankments

Fill slopes and embankment shall be constructed to a gradient of 1:2 with 2m berm width and 6m height. For steeper slopes, stabilization measures shall be provided such as:-

Geogrid/ geotextile reinforcement Reinforced concrete retaining structure

Reinforced fill structure

Replacing the fills with elevated structures, etc.

3.8.1.3 Cut Slopes

This includes cut slopes in residual soils and in completely decomposed rock. All untreated slopes shall be designed to 1 : 1.5 to 1:2 with 2m berm width and 6m height. For steeper slopes, stabilization measures are to be provided such as:-

Soil nailing with slope surface protection/ guniting Permanent ground anchors

Retaining walls, etc.

Generally the maximum number of berms in a cut slope is restricted to six (6) berms unless there is difficulty to construct it due to the terrain encountered.

3.8.1.4 Rock Slopes

Rock slopes shall be cut to 4 : 1 (Vertical : Horizontal) unless analysis indicates that it is unstable thus requiring extensive stabilization measures. The type of stabilization measures to be used can be one of the following:-

Permanent rock anchors Rock dowels

Rock bolting

Buttress walls

Counter forts

Relieve drains

Gunite protective surface seal

Wire netting

3.8.1.5 Typical Slope Construction

Some typical slope construction criteria adopted are:-

3.8.2 Settlement

Consideration

The design of the fill slopes and embankment shall consider both structural and geotechnical solutions with a view to minimizing construction cost taking into consideration the time frame available. Alternative designs for ground treatment and fill stabilization are to be prepared following the criteria stated below:-

1. Total Settlement

No. of

berms

ExistingSlope

AngleTypical Construction

SIDE-LONG FILL ON SLOPE

< 3 ≤ 35o Normal Slopes 1:2 (Vertical:Horizontal)

> 3 ≤ 35o Reinforced Slopes 4:1 (Vertical:Horizontal)

> 6 ≥ 35o

Replace with Retaining Structure

EMBANKMENTS

< 6 ≤ 35o Normal Slope 1:2 (Vertical:Horizontal)

> 6 ≥ 35o Reinforced Slope 4:1 (Vertical:Horizontal)

REINFORCED EMBANKMENT > 6 ≥ 35o Replace with Elevated Structure

CUT SLOPES

< 6 -Normal Slopes 1:1.5 to 1:2 with surface drains and 2.0m berms

> 6 - Soil Nailing with slope gradient 4:1 to reduce no of berms

i. Following the completion of the work and handing over of the site, the degree of primary consolidation must have achieved 90%.

ii. Following the completion of the work and handing over of the site, the settlement within the first five (5) years of service shall not exceed 10% of the sum of the total theoretical primary consolidation settlement and secondary settlement. In addition, total post construction settlement shall no where exceed 250mm.

2. Differential Settlementi. In areas of transition between piled approach embankments and general low

embankments, differential settlement within the first five (5) years of service shall not exceed 100mm within a length of 50m.

ii. In areas remote from structures and transition zones differential settlement shall not exceed 100mm within a length of 100m.

iii. Notwithstanding the allowable settlement of embankment, the Contractor shall ensure that services particularly water and sewage mains will not be adversely affected by post construction settlement.

During construction, the degree of consolidation and rate of settlement shall be verified on site using field measurement of pore water pressure and settlement. Asoaka’s Method (1978), Hyperbolic Methods or etc. is used to measured settlement and evaluate the settlement rates.

3.8.3 Effect of Earthquake

The Contractor shall take into consideration in his design the effect of sinkholes to locations such as in limestone area and the effect of liquefaction in sandy areas as a result from earthquake.

3.9 Instrumentation

The Contractor shall also be responsible to provide ground monitoring instrumentations during construction such as piezometer, settlement markers and plates and inclinometer etc, in order to facilitate the monitoring and reporting phase of any ground improvement methods/slope stabilization method.

(i) Provide sufficient quantities of instrumentations and equipments required.

(ii) Provide competent personnel for installation, collection of data, analysis and reporting

(iii) The contractors shall submit planning and monitoring instrumentation schedule.

(iv) The contractor is required to review design in case monitoring results shows non compliance to assumptions made during design stage

4.0 Structural Works

4.1 All structural works are to be designed and constructed in accordance with the relevant Malaysian/British Standards and Codes of Practice. All buildings shall be designed and constructed to ensure structural integrity, serviceability, to satisfy the requirements of durability, cost effectiveness and aesthetics.

4.2 All structural materials incorporated in the works shall comply with relevant Malaysian/British Standards and Codes of Practice. All structural concrete shall be at least of Grade 35 or higher with minimum cement contain not less than 360 kg/m3.

4.3 For projects in areas within the earthquake region areas that are susceptible to the effects of seismic activity, the design of structural works shall be in accordance to the requirements of an acceptable International Code Of Practice that cater for effects of the earthquake forces.

4.4 All structural timber works shall be of the strength group SG 1, SG 2, SG 3 and SG 4 in accordance to MS 544 and made up of heavy hardwood and duly treated where applicable.

4.5 All structural steel, otherwise specified shall be in ROLLED SECTIONS, STRUCTURAL HOLLOW SECTIONS, PLATES AND BARS and shall comply with the appropriate

standards mentioned in the JKR Standard Structural Steel Work Specification. The structural steel material shall be at least Grade 43 or higher.

4.6 All structural steel members shall be given protective treatment against corrosion and shall comply with the JKR Standard Structural Steel Work specification. The protective treatment shall be designed for a minimum service life of 20 years.

4.7 All structural member sizes, cover and other design detailing and requirements must comply at least to the minimum fire rating requirements as specified in the relevant building by-laws and Government agencies or 2 hours fire rating, whichever is higher. For steel structural elements, the design shall be at least conforms to B.S 5950: Part 8, the code of practice for fire resistant design.

4.8 All Prefabricated Timber/Cold Formed trusses shall be from the System Provider approved by JKR and complying with the following documents.

i) Garis Panduan bagi Rekabentuk dan Pemasangan Kekuda Kayu Pasangsiap

or

ii) Garis Panduan bagi Rekabentuk dan Pemasangan Kekuda Keluli Pasangsiap Cold Formed

4.9 Design for a particular structure shall take account of the conditions of exposure, the quality of cement, compatibility of additives, the grade of concrete, cement content of concrete mix, cover to reinforcement, the shape and bulk of the structure, ground water quality, curing, workmanship and other factors which influence the durability of reinforced concrete. The minimum cover to reinforcement shall be 50mm for foundation, 40mm for columns and ground beams and 25mm for beams, walls and slabs.

4.10 All structural members are to be designed in accordance to the loadings as specified in B.S. 6399. The minimum design superimposed live load to be used for the roof truss design shall be 0.25kN/m2. Brickwall or blockwork shall be considered separately. In the design of roof truss provision for inspection for the purpose of maintenance such as platform with railings shall be included.

4.11 Wind load means all loads due to the effect of wind pressure or suction. Wind load shall be calculated in accordance with MS 1153 or BS 6399 with modification on the wind speed to suit the actual local condition.

4.12 Construction load affects partially completed structures during the construction stage and is characteristically temporary. The magnitude and direction of such forces acting on any part of the structure depends on the type of construction plant or equipment employed and its placement with respect to the affected structural member concerned and shall be taken into consideration in the design of the structural elements.

4.13 Non-loadbearing brickwork or blockwork shall be properly designed to ensure the safe functioning of the walls. Proper attention shall be given to the stability of the wall and appropriate vertical/horizontal wall stiffeners shall be provided for every 10m2 area of wall or a minimum spacing of 3 meters. Lintols, ties, reinforcements and connections shall be used judiciously.

4.14 All toilet floor areas shall be constructed to be watertight. The floor area shall be tested for watertightness through a 24 hour ponding test, to ensure that there are no damp patches or leakage underneath the floor slab.

4.15 The design of flat roof is not recommended.

4.16 All parapet walls located in car parks shall be designed to withstand impact from accidental loadings from vehicles. Reference shall be made to the IStructE (The Institution of Structural Engineers) guideline entitled Design Recommendations for Multistorey and Underground Car Parks.

4.17 All precast elements shall be designed to include safety during transportation, erection and launching. The design of these elements shall take into account the requirements for fail safe mechanisms to prevent accidental collapse during launching and erection. A minimum Factor of Safety of 1.5 shall be used for the design of these elements.

4.18 All structural attachments for claddings/curtains walls, fascia boards and architectural fittings shall be properly designed to the relevant limit state requirements and shall be designed for a minimum design life of 50 years.

4.19 All sanitary fittings, pipes shall be cast in-situ into concrete components to prevent leakages. No hacking/break-up is allowed to hardened concrete slab.

SECTION B

DEMOLITION WORKS

DEMOLITION WORKS

1.0 Scope of Works

The scope of works consists of the demolition of the existing buildings, and carting away all debris from site.

All Works shall accommodate and satisfy the main scope of the Contract and the Architect’s requirements and drawings.

The buildings to be demolished are as indicated in the drawings. Demolition shall include floor surface, down to structural slabs and all other components noted on the drawings including services to the point of junction or the like.

2.0 General

2.1 The Work shall comply in accordance with BS 6187 or AS 2601, AS 2436, AS 3012 or any other well known and internationally accepted codes/criteria and methods which at the same time consistent with the technical requirements. In such cases, the tenderer shall indicate the codes/ criteria and method in his proposal.

2.2 All engineering investigations, planning, method statements, precautionary measures and supervision shall be carried out, developed and refined by the Contractor who shall engage qualified Professional Engineers, Surveyors, Blasting Experts, if deemed necessary, to carry out he Works.

2.3 The Contractor shall accept full responsibility for any claims arising from the failure to comply with the Work’s specification that impacts on adjacent building, noise, creation of dust odour, disruption and damages of services.

3.0 Planning

3.1 The Contractor shall carry out building appraisal by means of building and structural survey, where appropriate assessments can be made. Photographs and videos shall be taken for future reference. Demolition plan shall be prepared based on these findings, accompanied by a report together with structural calculations assessing the stability of the buildings to be demolished and all affected buildings, structures, streets, land and services.

3.2 The demolition plan shall also ensure that during the course of demolition, no existing utilities in the vicinity of the demolition sites are affected by the demolition operation and the contractor is responsible to liase and obtain prior approval from the relevant authority responsible for the utilities. The Contractor is also responsible to maintain basic utilities such as temporary water and electricity supply to provide a safe and healthy environment.

4.0 Precautionary Measures

4.1 The Contractor shall ensure that all necessary steps are taken as required by the local authorities for the protection of the public, preservation of public amenity and environmental impacts. Proper safety features such as hoarding, covered walkway, catch platform, temporary lighting, scaffoldings, screen covers, catchfans, temporary supports and protection of traffic shall be designed. Calculations and drawings including the use of pre-manufactured systems shall be submitted to the approval of the Project Director.

4.2 If traffic closure is necessary during the course of demolition, the Contractor shall appoint a traffic management company. Traffic Impact Assessment shall be submitted and prior approval of the Project Director, Local Authority and Polis Di Raja Malaysia obtained.

4.3 Special safety consideration shall be emphasised by the Contractor. These include training and communication of site personnel, equipment maintenance, electrical safety, fire, occupational health, emergency exits requirements, dust pollution, noise pollution and post-demolition precautions.

4.4 The Contractor shall ensure safe and proper removal and disposal of hazardous building materials, e.g. asbestos ceilings, asbestos roof coverings, pipes, rockwools etc. in accordance to statutory requirements by the relevant authorities.

5.0 Methods of Demolition

5.1 The Contractor shall submit in detail its proposed method statement for demolition in the Tender submission. This may include top-down method (manual or machine), hydraulic crusher with long boom arm, wrecking ball, implosion or any other method. In general, demolition should be carried put in the reverse order of construction, as far as appropriate, according to actual site conditions, restraints, the building layout, the structural layout and its construction.

5.2 In the event the Contractor proposes to blast the building structure, the Contractor shall carry out comprehensive Risk Assessment Report and an Environmental

Assessment Report on the effect of explosion on the affected neighbourhood. Any explosion method of demolition used shall comply with the JKR Quarry Rule and other relevant approving Authorities.

6.0 Special Structural Elements/Features

The Contractor shall submit in detail, demolition method for special features such as cladding walls, lift shafts, hanging structures, structures supporting grounds or sitting on slopes.

7.0 Site Supervision And Inspection

The Contractor shall submit to the approval of the Project Director, organization chart and the qualification of the supervising team and proof of expertise of the specialised contractor engaged.

8.0 Removal Of Debris And Making Good

8.1 The Contractor shall remove all materials or rubbish resulting from demolition and dispose of them in safe and satisfactory manner out of the site.

8.2 Repair and make good any damage to any adjacent buildings caused by the demolition works or by the negligent act or omission of any person engaged in it.

SECTION C

RENOVATION/ REHABILITATION WORKS

RENOVATION WORKS/ REHABILITATION WORKS

1.0 General

1.1 The Structural Renovation/ Rehabilitation Works shall cover the planning, investigation, evaluation, design, construction, supervision, testing, commissioning and maintenance thereof for the period on the said structures as mentioned above.

1.2 For the purpose of clarity, the scope of the works shall be divided into two (2) broad categories;

1. Assessment of Structures

2. Analysis and Structural Design

1.3 The Contractor is to ensure that all works pertaining to this contract shall be carried out to accommodate and satisfy the architectural, mechanical, electrical and structural requirements as stipulated in the Scope of Works.

2.0 Assessment of Structures

2.1 Purpose of Structural Assessment Work

a) The Contractor shall carry out complete assessment work on the existing structures for the purpose of ascertaining their current structural conditions. Furthermore, the Contractor is also required to determine whether or not the existing structures are in need any rehabilitation or strengthening work due to the defects in the structure or due to the increase in loading condition as a result of the proposed upgrading or refurbishment works.

b) The assessment work shall cover the general investigation, which is preliminary in nature and consists mainly desk study and visual inspection as well as the more detailed investigation that may ultimately necessitates the utilization of non-destructive testing.

2.2 General Investigation

a) At this stage of the work, the Contractor shall carry out adequate desk study, which may include the study of as-built drawings, contract documents, specifications and other documents related to the existing structure obtained from the client (if the information is available) or any other sources prior to the inspection work.

2. The Contractor shall then visit the site and carry out visual inspection on the existing structure. Sufficient inspection and desk study work should be carried out to enable the Contractor to decide on the proper scope and depth of detailed investigation that will be carried out later.

2. The general inspection carried out by the Contractor may cover but not limited to the following areas of investigation:

Surface condition and appearance of structures Spalling of concrete

Cracks and fissures on the structure

Other significant damage and defects

Appearance of rusting and other defective stains

General condition of steel reinforcement

Signs of ground subsidence or settlement

Signs of water/moisture ingress

2.3 Detailed Investigation

a) The Contractor shall propose a list of relevant non-destructive testing that is required to ascertain the condition of the structures. The tests proposed should be able to provide enough information on the nature, extent and severity of the defects or deficiencies. The tests proposed shall also enable the Contractor to determine the current level of building safety and such, enabling the Contractor to determine whether structural upgrading is necessary in view of the intended refurbishment work to be carried out on the building. The tests shall be sufficient enough to enable the Contractor to propose mitigation work to stabilize the structure during the upgrading or refurbishment work, should the requirement arise.

b) Samples of non-destructive tests that may be used by the Contractor are as follows;

1. In-situ Core Test2. Surface Hardness Test

3. Cover meter Survey

4. Carbonation Test

5. Ultrasonic Pulse Velocity Test

6. Half Cell Survey

c) The Contractor shall provide analyses and comments on the results of the tests. The Contractors shall also evaluate the state of the existing structure based on these results and finally certifies the condition of the structure.

d) The Contractor shall produce a comprehensive and conclusive report pertaining to the condition of the structure and shall covers but not limited to the following areas of interest;

i) introduction to the investigation work

ii) methodology of investigation and scope of work

iii) summary of tests carried out and their method statements

iv) method statement of tests and their acceptance criteria

v) tabulation of test results and their interpretation

vi) overall analysis and discussion on the findings

vii) Contractor’s conclusion on the investigation

viii) proposal on the relevant structural work

ix) verification by the Contractor on the safety of the structures

x) photographs showing the defects of the structure

xi) mapping of cracks and other relevant defects

The Contractor shall only be allowed to proceed with the subsequent work after the report on the assessment work is agreed upon and accepted by the Project Director.

3.0 Analysis and Structural Design

The requirements for analysis and structural design is as per requirements as mentioned in all section of this needs statement.

The design of the rehabilitated structure must take into account the structures safety during renovation/ rehabilitation works and all calculation must be submitted to the P.D. prior to start of work.

All materials and methods to be used in the rehabilitation/ renovation of the structure shall have been successfully implemented in similar accepted conditions with proven case history.

SOIL INVESTIGATION REPORT

SCHEDULE FOR WORKS SUBMISSION ITEMS

Checklist for items to be submitted for the Works:

1. Strategy and Methodology

Specification

Curriculum Vitae for Contractor and Consultant Staff

Organisation Chart

List of Plants

i. Programme of Works

Bar Chart

Payment Schedule

Staff Input Milestone Chart

- Staff versus Time for Contractor and Consultant staff

S- Curve

Critical Path Method

ii. Other Associated Works (if required)

Special Requirements such as temporary works and special piling precautions to reduce vibrations

iii. Quality Assurance Plan

General Quality Assurance Plan

Quality Procedure for Design

Quality Procedure for Construction

Quality Procedures for Testing and Inspection

iv. Geotechnical and Foundation Works

Site Investigation such as experience, historical data and preliminary investigation

Type of foundations such as whether the recommendation was made with backup data and includes economic evaluation.

Geotechnical reportsPreliminary calculations

Preliminary keyplan and detailed drawings with P.E. endorsement with each type of building. Drawing size A1.

v. Structural Works

Preliminary calculations

Preliminary keyplan and detailed drawings with P.E. endorsements for each type of building. Drawing size A1.

vi. Structural Steelworks/ Timber

Method Statement for fabrication and profile of fabricator

Method statement for erection

vii. Demolition Works

Method Statement for Demolition

Demolition Plan

Safety Precaution and Measures

viii. Renovation for Rehabilitation Works

Proposed material and method

Method Statement for Rehabilitation

Notes:

Concrete grade and cover must comply with the Need Statement.

THE ABOVE ITEMS TO BE INCLUDED IN THE ORIGINAL COPY OF THE PRE-BID DOCUMENT TO BE SUBMITTED.

SOME TYPICAL DESIGN CRITERIA FOR GEOTECHNICAL WORKS (APPENDIX 1)

DESIGN COMPONENT MODE OF FAILUREMINIMUM

FACTOR OF SAFETY

DESIGN LIFE

(durability of materials)

REMARK

1.

Slope / Embankment (not on soft ground)

Unreinforced 1.1 Local & Global Stability 1.25

75 yrs

Analysis should be according to GEOTECHNICAL MANUAL FOR SLOPES (1984), GEO Hong Kong

Reinforced or Treated 1.2 Local & Global Stability1.5

75 yrs

2. Embankment on Soft Ground

2.1

2.2

2.3

Bearing (short term)

Local & global slope stability (short term)

Local & global slope stability (long term)

1.4

1.3

1.2

75 yrs

5

Differential Settlement

years post construction settlement :

(i) within 50m from structures approach < 100mm

(ii) within 100m remote from structures < 100mm

Total Settlement <250mm

3. Permanent Anchors

3.1 Tensile Resistance 2.0

3.075 yrs

Geo Spec 1 (1989), GEO Hong Kong

BS 8081

3.2

3.3

Resistance at Soil Grout Interface

Creep/corrosion

4. Rigid Retaining Structures

4.1

4.2

4.3

4.4

Overturning

Sliding

Overall Stability

Bearing

1.8

1.6

1.5

2.0

75 yrs

Max. permissible vertical movement :

15mm along face of wall

Geoguide 1 (1983), GEO Hong Kong

Max. permissible lateral movement :

15mm along face of wall

Max. permissible differential movement :

1 : 150 along face of wall

5. Reinforced fill walls/structures

External Stability

BS 8006 120 yrs

Verticality:

5mm per metre height

Alignment along top (horizontal) :

15mm from reference alignment

Max. permissible differential movement :

1 : 100 along face of wallInternal Stability

6. Individual Foundation Piles (mainly under axial loads)

6.1 Shaft Resistance 2.0

75 yrs

Allowable settlement:

12mm along axis of pile at pile head at design load.

38mm or 10% pile size at pile head at twice design load.

Residual settlement not exceed 6.5mm

BS 8004 & JKR Road Specification

6.2 Base Resistance 3.0

7.Individual Foundation Piles (mainly under lateral & bending loads perpendicular to axis of pile)

Ultimate Lateral Resistance 2.5 75 yrs

Allowable settlement:

12mm along axis of pile at pile head at design load

BS 8004

Max. permissible lateral movement :

12mm perpendicular to axis of pile at design load

8. Pile Group Block Bearing Capacity 2.0 75 yrs

Allowable settlement:

12mm at Working Load

BS 8004

9. Piles as Retaining Structures As for 4, 6 & 7 above

As for individual foundation

piles

75 yrs

As 4 above for rigid retaining structures

BS 8004

To be filled in based on the current IBS requirement

KULIYYAH TEKNOLOGI MAKLUMAT & KOMUNIKASI (ICT) UIAM KAMPUS GOMBAK Revision: 18 May 2007