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Quality Policy

The Boodai Constructions (B C) Quality Control Program for this project called the Contractor Quality Control System is a program of policies procedures and detailed responsibilities required to ensure that the materials and components of the project will be constructed satisfactorily in conformance with applicable contract standards in order to accomplish the task professionally.

It comprises of systematic actions necessary to provide that items produced, manufactured, fabricated or constructed and services rendered by B C are in accordance with applicable contract requirements.

It is the philosophy of B C that quality must be planned and built into product or activity, and or verified by means of review, inspection and testing by Q.C.D.

The management emphasizes the principle that every individual is responsible for the quality of the work that he performs even though the work may be verified by independent QC Inspector at any state of processing to assure conformance with applicable specifications.

TABLE OF CONTENTS

SECTION DESCRIPTION
1.0

PROGRAM STRUCTURE, POLICIES AND FUNCTIONS

  • The Program
  • Program Structure
  • Quality Structure
  • Quality Control Functions
2.0

ORGANIZATION CHARTS, AUTHORITY AND QUALIFICATION OF QC PERSONNEL

INFORMATION OF Q.C. OFFICE FACILITY WITH INVENTORY OF EQUIPMENT

3.0

INFORMATION OF Q.C. OFFICE FACILITY WITH INVENTORY OF EQUIPMENT

4.0

DOCUMENT CONTROL

5.0

QUALITY INSPECTION & HOLD POINT SYSTEM

6.0

SITE WORK

  • EARTH WORKS
  • WATER SYSTEM
  • UNDERGROUND ELECTRICAL POWER DISTRIBUTION
  • SEWERAGE AND DRAINAGE SYSTEM
7.0

CONCRETE

  • CAST-IN-PLACE
  • PRECAST
8.0

METALS

  • STRUCTURAL STEEL
  • METAL ROOF DECK
9.0

THERMAL MOISTURE PROTECTION

  • PVC WATERPROOF MEMBRANE ROOFING SYSTEM
10.0

ARCHITECTURAL FINISHES

  • LATH AND PLASTER
  • QUARRY TILES
  • CERAMIC WALL TILES
  • CARPETING
  • PAINTING
  • GYPSUM WALL BOARD
  • SUSPENDED ACOUSTICAL CEILING
  • RESILIENT TILE FLOORING
  • HOLLOW METAL DOORS AND FRAMES
  • WOOD DOORS
  • ALUMINUM WINDOWS
  • HARDWARE
11.0

MECHANICAL

  • PLUMBING
  • MECHANICAL 9HVAC DUCT WORK0
  • FIRE PROTECTION
12.0

ELECTRICAL

PROGRAM STRUCTURE , POLICIES AND FUNCTIONS

The program

The Boodai Constructions (B C) Quality Control Program for this project called the Contractor Quality Control System is a program of policies procedures and detailed responsibilities required to ensure that the materials and components of the project will be constructed satisfactorily in conformance with applicable contract standards in order to accomplish the task professionally.

It comprises of systematic actions necessary to provide that items produced, manufactured, fabricated or constructed and services rendered by B C are in accordance with applicable contract requirements.

It is the philosophy of B C that quality must be planned and built into product or activity, and or verified by means of review, inspection and testing by Q.C.D.

The management emphasizes the principle that every individual is responsible for the quality of the work that he performs even though the work may be verified by independent QC Inspector at any state of processing to assure conformance with applicable specifications.

Program Structure

The contents of the QC program consist of detailed written statement of policies and procedures, in relation to specifications, drawings, materials, test and documentation.

The program has been structured and developed to illustrate the control practices during project execution in terms of information, materials and personnel in three basic phases namely;

  • Preparatory Phase
  • Initial Phase
  • Follow-up Phase

The detailed break up of this structure is shown in the Quality Control Matrix in Fig. 1.

This Quality Control Program has been prepared to describe the QC-Program and Procedures for B C activities and will be the over all document which describes as general quality requirements and the principles for accomplishment.

QC procedure describes the practical accomplishment of the QC requirements related to the different activities of the project in conformance with applicable specifications and drawings.

Quality Control Structure

PHASE INFORMATION CONTROL MATERIAL CONTROL PERSONNEL CONTROL
PREPARATORY
  • Preparation of procedures for document control and information
  • Preparation of procedures for materials control
  • Preparation of procedures for construction
  • Preparation of procedures for personnel qualification
  • Qualification and recording of personnel
INITIAL
  • Checking, recording and updating of information
  • Issue control of information
  • Checking and recording materials
  • Quality Control of Construction
  • Qualification and recording of personnel
  • Workmanship control
FOLLOW-UP
  • Recording as-built information
  • Record test result
  • Preparation of acceptance documents
  • Visual inspection of installed material and equipment’
  • Testing, adjusting, calibration, etc.
  • Inspection of final product
  • Evaluation of workmanship
Fig. 1 Quality Control Matrix

Quality Control policies

Contract Quality Control (CQC)

This is a Q.C. system of inspection and control to be observed by all Q.C. personnel in the company to ensure that all necessary aspects of quality are in accordance with the contract.

This system covers the appliance aspects of quality both on-site and off-site. This system follows the B C Q.C. Program structure as described earlier (Fig.1) the objective of CQC is to ensure for this project the following aspects:

  • Work performed under this contract conforms to all applicable standards and specifications.
  • Perform sufficient inspection and tests of all items of work, including that of B C sub-contracts to ensure conformance to applicable contract plans, specifications and drawings in respect of materials, workmanship and performance.
  • Maintain inspection records and make them available to the client when required.
  • Provide necessary support for any inspection test that the client may want to perform at the site.
  • Conduct Phased inspection namely the Preparatory, the Initial and the Follow-up inspection in accordance with the relevant clauses of the contract.
  • Review and approve the shop drawing prior to submittal to the client.
  • Conduct on-site and off-site inspection on all materials, suppliers and services to be incorporated into the works.
  • Prepare, maintain and submit inspection reports on accomplished work as specified in the contract. Make available to the Clients Representative when required, these reports to show the following details.
    • Inspection/ Tests made on materials in relation to the phase of work accomplish and upon arrival at site before incorporation into the work.
    • Identification of any defects and the necessary remedial/ corrective actions.
    • Identify the inspection done on-site and off-site.
    • Use independent test laboratory to conduct tests when necessary.
    • To keep client informed of any change or deviation other than the approved drawings and specifications.
    • To implement procedures for analysis, corrective/ preventive actions in accordance with standards and procedures.

Quality Control Functions

The Q.C. Department (QCD) is established as a part of the Technical support Group, being a B C Management activity. The head of the department has authority and responsibility to implement the requirements of the Quality Control Program. He is free to discuss and analyze any problems arising from quality control and inspection activities, at any level in the organization. He is responsible to obtain necessary QC equipment and qualified personnel to accomplish the Q.C. Program (QCP).

The main responsibilities of the QCD are to establish and implement the Quality Control program (QCP) in the organization and to:

  • Ensure that job procedures are implemented at the site organization.
  • Ensure that operational procedures are established according to applicable codes, standards and contract requirements.
  • Ensure that operators are qualified, and that the necessary records of qualifications and performance are maintained.
  • Endure that the workmanship level is maintained as per the company standards and is acceptable to the client.
  • Ensure that inspection and testing activities are carried out in accordance with approved procedures, and to the extent specified in contract documents.
  • Record and file the results of testing and inspection activities and prepare for acceptance by the client.
  • Carry out audit to verify compliance with routines and procedures.

The head of the Quality Control Department, in consultation with Project Manager, nominates QA/QC personnel on each discipline for the performance and adherence to the Quality Control program.

  • The Quality Control Manager will be responsible for Program implementation and shall report directly to the Project Manager.
  • The Quality Control Manager has authority to identify problems, initiate corrective action, recommend solutions and stop work when necessary or as directed by the Clients or their appointed Representative.
  • The Quality control personnel will be independent of the construction production staff, and will report directly to the Quality Control Manager.

ORGANIZATION CHART, AUTHORITY & QUALIFICATION OF QC PERSONNEL

This section describes the Quality Control Organization and function, which will implement the Quality Control program.

The Project Manager

  • The Project Manager shall report directly to the Management of Boodai Constructions.
  • He shall responsible for assuring compliance of the approved Quality Control Program for all Construction Inspection and Testing activities both off-site and on-site.
  • He shall be responsible for the project construction and supervision of the work an assuring availability of adequate tools, equipment, manpower and qualified site supervisors.
  • He shall be responsible for procurement, receipt and storage of all materials.
  • He shall be responsible in maintaining adequate qualified Quality Control Personnel to perform all tasks required by the approved Q.C. Program.
  • He shall represent the company, Boodai Constructions (B C) for all contractual maters with the Clients or their appointed representative.
  • He shall responsible for issuing the periodical Quality Control reports to the Clients or their appointed representative and ensuring correction of any non-conformance reports.
  • He shall maintain a clean and safe site.

Quality Control Manager

  • The Quality Control Manager will report directly to the Project Manager.
  • He will be responsible for the implementation of the approved Quality Control Program and ensuring compliance with the requirements of the Contract Specification and Drawings.
  • He will be responsible for the preparation of all Quality Control, inspection and testing procedures required for the implementation of the approved Q.C. Program and compliance with the contract specification.
  • He will assign and direct the Quality Control Inspector in the performance of specific responsibilities described throughout this Q.C. Program.
  • He will be responsible for reviewing all construction drawings to ensure that they contain the necessary quality related requirements prior to release for construction. Additionally, he will review as-built drawings prior to final acceptance and any revisions to the contract specification prior to use.
  • He will keep liaison with the outside-approved Testing Laboratory in the performance of necessary test and review all the results.
  • He will verify that all samples, certificates of laboratory and field test comply with the contract requirements.
  • He will oversee the vendors Quality Control activities to ensure all materials, items and services supplied y the vendors comply with the contracts specifications and requirements.
  • He will review all purchase requisition prior to issue in order to ensure the necessary paper requirements.
  • He will be responsible for receipt and inspection of all materials and equipment to be installed in the project and ensure that necessary storage and protection requirements are met.
  • He will liaise with the Clients of their representative on all quality related matters.
  • He will be responsible for assembly of Daily QC report and recommend issuance and corrective action regarding non-conformance.
  • He will implement and maintain a filing system for all QC procedures, records, reports etc.

Quality Control Inspectors:

  • The Quality Control Inspector will report directly to the Quality Control Manager.
  • The Quality Control Inspector will perform the inspection and testing activities directed by the Q.C. Program procedures and or the Quality Control Manager and shall record results of inspection and tests on the inspection check list and transmit to the Quality Control Manager for incorporation in Daily QC reports.
  • The Q.C. inspector will implement the approved Q.C. Program as directed by the Q.C. Manager.

The qualification requirements for Q.C. Personnel shall be as follows:

  • 1. The Quality Control Manager will be college graduate with BS in Engineering, with a minimum of eight (8) years related construction experience.
  • 2. The Q.C. inspector will have at least (5) years of related construction experience.

All contractor personnel (i.e. engineering, procurement as well as quality control) shall be completely familiar with the requirements of the contractors QC Program.

INFORMATION OF Q.C. OFFICE FACILITY WITH INVENTORY OF EQUIPMENT.

One air-conditioned office will be provided for Quality Control Staff which house Quality Control Manager and his inspectors and Secretary.

In addition to the office furniture, inspection equipment shall be kept in the said office which will be used by inspectors for inspection purposes. The following equipments are proposed to be kept in the quality control office:

  • Survey Instruments such as Theodolite, Level, its Tripod and Stuff.
  • Spirit Level, straight edges, string-lines, measuring tapes, right angles, plumb bob, etc.
  • Cylinders to take sample concrete cylinders.
  • Slump cones for slump measurement.
  • Thermometers for measuring concrete temperatures.
  • Moisture testers for compaction work.

DOCUMENTS CONTROL

All the related documents of each item will be controlled and filed in a File with same control number, including the following information.

  • A. Specification & bill of Materials :

    Required specification and Bill of Materials of the item which are to be transferred from the related Tech. Dept. will be distributed to the reliable supply sources for their quotations, samples and tech. Data including drawings.

  • B. Approved Specifications, Sample & Drawings:

    The specification, sample and drawings of selected source will be submitted to the Client for their review and approval; the copies will be distributed on the related Dept. and Quality Control Dept.

  • C. Purchase Order :

    The purchase order will be issued to the approved source with the approved specifications, samples and drawings.

    The specified test and inspection certificates which are to be carried out by the supplier in his shop and/or approved testing agencies will be remarked on the Purchase Order.

    If there is any revision of specification and quantity, etc. a revised purchase order will be issued immediately.

  • D. Inspection Report & Certificates of Test :

    Reports of off-site test and inspection will be kept on forms of approved format. All the test certificates and inspection reports including form supplies and/or other testing agencies will be certified by the appropriate responsible person or Quality Control Team, who is recommended by the Manager of Quality Control Dept. and Certificates will be submitted to the Client as required.

  • E. Shipping Documents:

    The copies of shipping documents will be distributed to the related Dept. and contents will be reported to the Client on shipping Report.

  • F. Site Inspection & Claim:

    When the materials are delivered to site, the materials will be inspected by on-site Quality Control Inspector (wither Civil/Structural, Mech. & Elect., or finishing as the case may be) and report to the Project Manager directly. If any damage and losses are found, the claim will be made immediately to the party concerned and followed up for prompt solution. Site inspection report will be submitted to Client on format.

  • G. An approved format will be used to raise any technical queries for the approval of the Client and a log will be kept for records this will be up-dated on a weekly basis.
  • H. As-built will be recorded, transferred into a set of drawing kept for this purpose. This will be done on a daily basis when required.
  • I. All field directives received from the Client will be logged and answered and immediate action will soon follow.
  • J. QC/QA audit will be carried out every three months period. This will cover all the following:

    Technical submittals, Material Received, Field Directives, Method Statements, Technical Queries, Daily, Weekly & Monthly Reports, Test Certificates, Hold Points Release, As-built.

QUALITY INSPECTION & HOLD POINT SYSTEM :

Quality Inspection Plan includes Three (3) phases, at least, for all definable phases of productions as follows:

Preparatory Inspection:

This inspection will be performed prior to starting work on any definable phases of production in supplier’s shops.

This will include a review and reconfirmation of the approved specifications, samples, drawings and delivery.

Detailed production schedule will be submitted by the supplier before production.

  • Check to assure that raw materials and equipments have been stocked and provided.
  • Examine to assure that materials meet the approved specifications.
  • Check to conform that provisions have been made to provide required inspection and test.
  • Check to assure that production has been started as per the production schedule.

Initial Inspection:

This inspection is done as soon as a respective portion of the particular phase of work as shown in construction schedule has been accomplished.

The inspection shall establish the acceptable standard of workmanship and includes a review of control testing for compliance with contract requirement. It will take into account relevant to all the Q.C. procedures relating the inspection of the relevant portion of the work. Once this portion is acceptable by CQC, the Client inspector is notified.

Follow-up Inspection

During the production period, the off-site Quality Control Inspector (Either Civil/Structural, Mech. & Elect. Or Finishing as the case may be) will inspect periodically and report the result in the approved format by the Client.

If required, the Quality Control Manager will also visit supplier’s shop.

  • Check to assure that all the production is being done in compliance with approved specification and requirements, including control tests, until completion of the particular phase of production.

Check to confirm that as soon as the particular phase of the production is completed, the tests and inspections as per contract requirements and dimensional requirements have been made.

HOLD POINT SYSTEM

  • Hold Point:

    Hold point is defined as steps at which specific inspection and documentation shall be performed by the Contractor and reviewed by the Client.

    Sing off by both the Client Representative and the Contractor’s Quality Control Manager will constitute removal of the hold and authorize the work to proceed.

    The Contractor will provide 24 hours notice to Client for any Hold Point.

  • Non-Conformance:

    In the event of non-conformance of work as specified in the Contract Drawing and Specification, the Quality Control Manger will issue a certificate of non-conformance to the Project Manager for their remedial action.

    This certificate of non-conformance with the proposed remedial action will be forwarded to the Client for their review and approval.

    Proposed remedial works covered by the non-conformance report cannot be initiated prior to the approval of the Client Representative.

    Q.C. reporting and corrective alternative of the non-conformance information approved by Client should be forwarded to Q.C. Office for record and should be reflected on the final as-built drawing.

SITE WORK

EARTH WORK

This procedure applies in all excavation transporting, placing, spreading, moisture conditioning and including the control and removal of surface water regardless of its character and source, providing and maintaining access road to borrow areas, grading off and dressing-up areas adjacent to road embankment and all other associated work.

Clearing and Grubbing Site Preparation

Materials:

A. Fill material shall be from one or more sources as specified.

  • Suitable material from required excavation within the site of work covered under this contract.
  • Borrow areas designated by Client.

B. The material also conforms to the following types.

  • 1. Cohesion less materials – includes relatively free draining granular material such as sand or gravel which contain less than 12% of fines that will pass through the no. 200 sieve.
  • 2. Cohesive materials – includes all fine grained soil which exhibit cohesion properties, such as clayey or soil. Additionally, coarse grain soil which contains 12% or more of fine that will pass through the no. 200 sieve shall also be included in the category of cohesive material.
Excavation:
  • A check survey of existing grades will be performed prior to the start of grading / excavation.
  • Excavation shall be carried out to the fine level and profiles shown on the contract drawing or to such other line level and profiles as the Client may direct or approved.
  • Material to be excavated are not specifically classified and the work shall include excavation of all types of soil and rock, whether water bearing or not, to the fine indicated.
  • Excavated material suitable for fill shall be transported to and place in fill areas within the limit of work acceptable by the client.
  • Excavated material unsuitable for fill shall be hauled away and dumped in soil areas designated by the Client.
  • Finish excavation slope in all permanent areas must be free of debris and loose materials.
Excavation Near Existing Utilities
  • Prior to any excavation, Boodai Constructions will determine the number and location of underground utilities in the immediate proximity of works.
  • B C will excavate test pit whenever necessary or required by Client to determine the exact location of such underground utilities.
  • This test pit shall be fenced, marked and protected as required by Client.
  • Test pit shall be excavated and refilled by hand-tools.
  • If excavation approaches existing utilities, excavation by machine shall be discontinued and hand-tools shall be used.
Fill

General Fill:

  • No fill material shall be placed until the surface of subsoil must be cleaned, free of standing and running water and also accepted by the Client.
  • Fill Material shall be placed and compacted in an orderly manner using equipment maintained in first class operating condition.
  • Tolerance for fill materials :
  • 1. General Fill = Plus 100 mm – Minus 100 m
  • 2. Fill to be covered with concrete in foundation or lining or drainage or filter layer of artificial or selected natural material or any layer of other material.

    Plus Zero – Minus 75 mm.

Testing and Compaction

The frequency of relative compaction test will be a minimum of Ten (10) relative volume of fill in accordance to specifications. The choice of volume, area of length of fill as a basis for relative compaction testing shall be made by the Client, and such choice shall always be that which will result in the greatest frequency of test.

  • Testing requirement for cohesive material, the laboratory density and optimum moisture for cohesive fill material shall be determined in accordance with ASTM P. 1557 Method C, at least one (1) for every 10 relative compaction determination and also for every change in soil type an d/ or borrow source.
  • Testing requirement for cohensiionless material, the laboratory density for conhesionaless shall be determined in accordance with the ASTM D-2049 procedure for determination of maximum density at least once for every Ten (10) relative compaction determination, and also for every change in soil type and / or borrow source.
Reporting

Daily inspection Report will be submitted to the Client on a weekly basis. A Monthly Report will summarize all inspection and testing activities for the month. The Report will include status of all unresolved deficiency from Daily Reports.

WATER SYSTEM

This Section covers the furnishing, installation, flushing, testing and disinfection of underground potable water and fire water piping system.

Submittals

  • The Manufacturer’s Test Certificate of compliance stating that the material used and construction of component fitting, valves, piping specialties and accessories conform to all requirements and specs.
  • Catalog data for all component fitting, valves, piping specialties and accessories showing temperature pressure rating.
  • Samples of material as required by the Client.
  • Detailed drawing and shop drawing, showing dimension, cross section, material of construction, design features method of installation of components, valves, fittings, piping specialties and accessories.
  • Pipe testing, flushing & disinfection procedure.

Product & Handling

  • All products shall be delivered in manufacturer’s original protective packing.
  • All products shall be inspected at the time of delivery for damage and for compliance with specs.
  • Any product that is found to be damaged or not in accordance with the specs shall be rejected and removed from site.
  • All products shall be handled and stored as recommended by the manufacturer to prevent damage and deterioration.
  • Piping for underground water service lines up to 110 mm diameter shall be UPVC or HDPE (High Density Polyethelene) as indicated on the drawing or as per specification.
  • Piping 110mm diameter and larger shall be carbon steel (CS) unplasticized polyvinyl chloride (UPVC), reinforced thermositting resin plastic (RTRP) and steel cylinder reinforced concrete (SCRC) pressure piping as indicated on the contract drawing or as per specification.
  • All component, fitting, valves, piping specialties and accessories shall be suitably rated to comply with the system working and test pressure.
  • Handling UPVC Piping : the Contractor shall observe and implement as part of his field procedures the following requirements for UPVC piping :
    • UPVC pipes shall be stacked on a flat surface free from sharp projections, stones, or other protuberances likely to deform them. It may be necessary to level the ground at the storage pint by mans of a bulldozer or vehicle fitted with scraper blade in order that pipes may be uniformly supported throughout their length.
    • Side support shall be wooden posts, not less than 75 mm wide. They shall be providing at not more than 1.5m intervals along the pipe length. Stack widths shall not exceed 3m.
    • When socket pipes are stacked, the sockets shall be placed at alternate ends of the stack with the sockets protruding so that pipes are evenly supported along their length.
    • Height of pipe stacks shall not exceed four (4) layers of pipe or one (1) meter whichever is less.
    • Pipes of different sizes or wall thickness shall be stored separately, or where this is not possible, those with larger diameters and thicker walls shall be at the bottom.
    • No piping shall be exposed to the direct sunlight for more than two (2) weeks during storage, transportation, handling and / or installation. The pipes shall be stored under a protective tarpaulin cover, which shall not leave any pipe surface or pipe ends exposed. The cover shall be arranged to allow air circulation within its volume or confinement by fixing tarpaulin to wood support posts.
    • Fittings shall be stored under shade conditions preferably in boxes or sacks which allow a free passage of air.
    • When loading, unloading or retrieving pipes from storage, they shall be handled carefully so as not to score, impact crack, abrasion damage, gauge or cut, or other damage prior to installation. Bell joints shall not be stressed and level ends shall not be damaged. Pipes shall be lowered from trucks, not dropped.
    • UPVC pipes shall be transported to the jobsite in special pile rack type containerized units to facilitate loading, unloading, onsite storage, retrieval and protection of piping from sunlight and ultraviolet (UV) radiation.

Inspection and Testing :

  • Material Receiving – inspection of pipes, fittings, valves etc. for compliance with the contract document and the approved submittal.
  • Material Lay down – Periodic inspection of material to ensure proper protection.
  • Installation – Continuous inspection of installation procedures, elevation and grade as per the approved contract drawing.
  • Coat and wrapping – Inspection for proper insulation procedure and see to it that material used are as per the approved submittals.
  • Backfilling – Prior to backfilling, sign off required for final inspection and check all necessary as built condition plus any special requirement of the contract documents and specification.

Hold Point:

  • Establish hold pint release for Client inspection and witness prior to installation and backfilling of pipes.
  • Prepare testing of pipes in the presence of or as directed by Client Representative.

Reporting:

  • Daily Inspection Report shall be submitted to Client on a weekly basis. A Monthly Report will summarize all inspection and testing activity for the month. The reports shall include status of all unresolved deficiency from Daily Reports.

UNDERGROUND ELECTRICAL POWER DISTRIBUTION

Scope of Work:

This section includes furnishing, installation and testing of underground electrical power distribution system.

Submittals

Manufacturer’s literature for review:

  • Dimension & Ampacities of cable.
  • Duct material and dimension
  • Construction detail drawing, connector, fitting, ground rod, boxes including drawing for field fabricated items.

Test Reports:

  • a) Test report indicating the insulation resistance of all cables.
  • b) Voltage Test.
  • c) Megger Test for panel board wire & cable.
  • d) Grounding Test.
  • e) All Testing must be in the presence of Client Representative.

Inspection and Check List:

  • Cable sizes and type in relation to NEC.
  • Check bending radius for all primary and secondary cable.
  • Check manhole, handhole and each type.
  • Secondary underground Receway System.
    • Check type of conduit and coating.
    • Plot plan and clearances as per specs.

Hold Points:

  • Prior to start backfilling for the trenches for direct burial cable, raceway and ground Wires. - Sign-off required.
  • Prior to start concrete placement of the following
    • Foundation for equipment including pads and racks - Sign-off required.
    • Manholes, Handholes, trenches and duct banks - Sign-off required.
  • Prior to start the following.
    • Using or installation equipment and hardware - Sign-off required.
    • Splicing, terminating and testing of H-Voltage and telecommunication cable - Sign-off required.

Reporting:

Daily Inspection Report will be submitted to the Client on the day following the activity.

A Monthly Report will summarize all inspection and testing activities for the month.

The reports will include status of all unresolved deficiencies from daily reports.

SEWERAGE AND DRAINAGE SYSTEM

This section covers the furnishing, installation and testing of sewerage and drainage system. The contractor shall observe and implement as part of his field procedures the following requirements for UPVC piping:

  • UPVC pipes shall be stacked on a flat surface free from sharp projections, stones, or other protuberances likely to deform them. It may be necessary to level the ground at the storage point by means of a bulldozer or vehicles fitted with scraper throughout their length.
  • Side supports shall be wooden posts, not less than 75mm wide. They shall be provided at not more than 1.5m intervals along the pipe length. Stack widths / shall not exceed 3 m.
  • When socket pipes are stacked, the sockets shall be placed at alternate ends of the stack with the sockets protruding so that pipes are evenly supported a long their entire length.
  • Height of the pipe stacks shall not exceed four (4) layers if pipe or one (1) meter whichever is less.
  • Pipes of different sixes or wall thicknesses shall be stored separately, or where this is not possible, those with larger diameters and thicker walls shall be at bottom.
  • No piping shall be exposed to the direct sunlight for more than two (2) weeks during storage, transportation, handling and / or installation. The pipes shall be stored under a protective tarpaulin cover, which shall not leave any pipe surface or pipe ends exposed. The cover shall be arranged to allow air circulation within its volume or confinement by fixing tarpaulin to wooden support posts.
  • Fittings shall be stored under shade conditions preferably in boxes or sacks which allow a free passage of air.
  • When loading, unloading or retrieving pipes from storage, they shall be handled carefully so as not to score, impact crack, abrasion damage, gauge or cut, or other damage prior to installation. Pipes shall not be dropped but shall be lowered into trenches. Bell joints shall not be stressed and level ends shall not be damaged. Pipes shall be lowered from trucks, not dropped.
  • UPVC pipes shall be transported to the jobsite in special pile rack type containerized units to facilitate loading, unloading, onsite storage, retrieval and protection of piping from sunlight and ultraviolet (UV) radiation.
Submittals:
  • Catalog data for all pipes, fittings, and accessories showing illustration and schedule of parts to facilitate assembly and disassembly.
  • Samples of material as required by the Client.
  • Joint detail drawing and joint assembly procedure including connections to manhole, catch basins & cleanouts, etc.
Product & Handling:
  • All products shall be delivered in manufacturer original protective packing.
  • All products shall be inspected at the time of delivery for damage and for compliance with specs.
  • Any product that is found to be damaged or not in accordance with the specs shall be rejected and removed from site.
  • All products shall be handled and stored as recommended by the manufacturer to prevent damage and deterioration.
  • Piping for sewerage & drainage system shall be UPVC or HDPE (High Density Polyethelene) as indicated on the drawing or as per specification.
Inspection and Testing:
  • Material Receiving – inspection of pipes, fittings, valves etc. for the compliance with the contract document and the approved submittal.
  • Material Laydown – Periodic inspection of material to ensure proper protection.
  • Installation – Continuous inspection of installation procedures, elevation and grade as per the approved contract drawing.
  • Coat and wrapping – Inspection for proper insulation procedure and see to it that material used are as per the approved submittals.
  • Backfilling – Prior to backfilling, sign off is required for final inspection and check all necessary as built condition, plus any special requirement of the contract documents and specification.
Hold Point:
  • Establish hold point release for Client inspection and witness prior to installation and backfilling of pipes.
  • Prepare testing of pipes in the presence of or as directed by Client Representative.
Reporting:
  • Daily Inspection Report shall be submitted to Client on a weekly basis. A Monthly Report will summarize all inspection and testing activity for the month. The reports shall include status of all unresolved deficiency from Daily Reports.

CONCRETE

CAST-IN-PLACE CONCRETE:

This procedure applies to all plain and reinforced concrete works including the placing of anchor bolts, reinforcing steel, conduits and other embedded items. It also applies to the placing of slide plates, leveling and bearing places, and concrete paving.

The procedure covers virtually all the work covered in the contract and specification.

Form Work:
  • Prior to placement of forms, survey line & grade control shall be checked for accuracy.
  • Formwork and shoring material shall be inspected to ensure they comply with specified requirements and are properly cleaned prior to use.
  • Completed formwork shall be inspected for compliance with design drawings and specifications. Tolerances shown on the design drawings shall apply.
  • Formwork shall be accurately placed in accordance with the design drawings properly shored, braced and tied to prevent deformation or failure during placement and curing of concrete.
  • Adequate provision shall be made for adjustment and removal of formwork. Tell-tale devices shall be installed where necessary to facilitate detection and measurement of formwork movements during concreting.
  • Formwork shall be properly anchored to the shores below to prevent upward or horizontal of any part of the formwork system during concrete placement.
  • Form surfaces shall be coated with specified form releases agent or wetted in accordance with the design drawings. Release agent coatings shall be applied prior to placing reinforcing steel.
  • Control joints, expansion joints and construction joints shall be checked to assure that they are installed and tightened. All form ties and clamps shall be checked to assure they are of the specified size and type.
  • Chamber strips shall be inspected to verify proper placement.
  • Forms shall be inspected before the reinforcing steel is placed to ensure that the dimensions and the locations of the concrete members will conform to the drawings.
  • Forms shall be sufficiently tight to prevent loss of mortar from the concrete.
  • Blockouts, inserts and embedded items shall be inspected to assure that they are properly identified, positioned and secured.
  • Forms shall be inspected before the reinforcing steel is placed to ensure that the dimensions and the locations of the concrete members will conform to the drawings.
  • Forms shall be sufficiently tight to prevent loss of mortar from the concrete.
Reinforcing Steel:
  • Reinforcing materials fabrication, marking and placement shall be inspected to assure compliance with the drawings.
  • All paints, oil, grease, strong alkali or organic matter, mud or excess loose scale shall be removed before concrete is placed.
  • Hooks and bends, including minimum extensions, shall be made in accordance with the design drawings.
  • Minimum splice length shall be as shown on the drawings.
  • Reinforcing shall be inspected to assure that the rebar has the required cover, as shown on the drawings. If not indicated refer as per section 3.02.
  • Anchor bolts, slide plates and other embedded items installed after placement of reinforcing steel shall be inspected to assure, that they are properly located and secured to prevent movement during concrete placement.
  • Where epoxy coated reinforcement is specified, all chains, tie-wires or other devices sued to connect, support, secure or fasten epoxy coated reinforcement shall be made of, or coated with a di-electric material such as nylon, epoxy or plastic and all visible damage to coating shall be repaired immediately after fabrication and again after installation.
  • Only fusion bonded epoxy-coated shall be used in concrete exposed to earth, groundwater and seawater (in which case tanking of the structure is not applicable). Where epoxy coated rebar is used in the structures’ foundations and below grade, epoxy-coated rebar shall be installed to a minimum height of 3.50m above the highest contact level of the foundation with the soil or water. Where a moisture barrier is proposed, the epoxy coated rebar need not extend above the barrier.
  • Laps splices of epoxy-coated rebar with regular rebar shall not be in contact with each other by providing an electrical separation of the surface of the two types of rebar at the lap interface.
  • When the epoxy coating is damaged (cut ends, accidental damage, etc.), the coating shall be repaired with patching material conforming to ASTM A775-86 and shall be carried out in accordance with the supplier’s recommendation. Patch material shall be furnished by the rebar supplier in sufficient quantity to repair all shipping and site damage to coating. It shall be a two part liquid to allow 130 micron coat to be applied by brush and formulated to give adequate “Pot Life” and shall be compatible with the fusion bonded coated.
  • The repair to the damaged area shall be carried out as soon as possible, and before oxidation of the surface occurs. Any trace of rust or oxidation shall be removed by grinder or wire brush prior to touch-up.
  • Any epoxy coated reinforcement which as delaminated or split coating shall be rejected.
Material Requests to Concrete Suppliers:

Order to the Batch Plant operation shall specify the following:

  • Job, specific location and time delivery is required.
  • Slump or slumps, desired at point of delivery.
  • Type of cement and admixtures desired.
  • Desired ultimate design compressive strength of the concrete as determined on samples taken from the transportation units at the point of discharge, evaluated in accordance with section 16 ASTM C94.
  • Designated size, or sizes of coarse aggregate.
  • Total amount of concrete needed to complete the planned placement without interruption. The Batch plant shall be checked to assure supply of the required amount to satisfy the placement schedule.
Inspection & Sampling of Fresh Concrete At Point of Delivery.
  • Delivery Tickets:

    A delivery ticket be prepared for each load of ready-mixed concrete, a copy of each ticket shall be provided on a daily basis to the Client by the Contractor. The ticket shall be delivered to the Contractor, in duplicate by the truck operator. Tickets shall contain the following stamped or written information.

    • Name of Ready-Mix Batch Plant.
    • Serial number of the Batch Plant
    • Date
    • Truck Number.
    • Name of purchaser
    • Mix identification.
    • Quantity delivered (in m3).
    • Time at which the cement was added..
    • Shade temperature
    • Water added by receiver (if any) and his initials with the approval of Client’s Representative.
  • Tests

    Field control tests, consisting of concrete temperature, slump tests, air content tests, and ultimate strength compression tests shall be performed by qualified personnel to the satisfaction of the Client. All tests for review of the Client shall be made by an acceptable testing laboratory at the expense of the Contractor.

    The test frequency for each field quality control test shall be as specified below.

    • Temperature :

      Temperature of concrete shall be taken for every Batch delivered in site. Temperature of concrete requirements and limit shall base as per specifications.

    • A slump test shall be made for each concrete load at point of discharge and one slump test for each set of compressive strength test specimens. Slump shall be determined in accordance with ASTM C143. Concrete slump shall be kept as low as possible consistent with proper handling and through consolidation. Unless otherwise authorized by the Client, slump shall not exceed at the maximum limits set out in specifications.
    • Air Content :

      Air content shall be measured for every batches of concrete. The total volumetric air content of concrete for 20 mm maximum size of aggregate should be between 4 to 6%.

    • Strength Tests:

      One set of six test cylinder from each 50 cubic meters or fraction thereof, shall be provided for each class of concrete placed.

      Test specimens shall be made, cured, stored and delivered to the test laboratory in accordance with ASTM C39.

      Each set of compression test specimens shall be marked or tagged with the date and time of day the specimens were made, the location in the work where the concrete represented by the specimen, the delivery ticket or batch number, the air content and the slump.

      Three cylinders of each set shall be tested at an age of 7 days and other cylinders shall be tested at age of 28 days. Testing shall be in accordance with ASTM C39. Compression tests shall be evaluated in accordance with ACI-214 and ACI-318,

      The test laboratory shall report test results in writing to the contractor, the ready-mix supplier and the Client on the same day that tests are made.

Placement:

The limits of each placement shall be determined by the Contractor and might be acceptable to the Client. All concrete within such limits shall be poured in one continuous operation.

  • Formwork:

    Formwork, construction joints and placement of anchor bolts and other embedded items shall be inspected to assure compliance with design requirements. All embedded items shall be inspected to assure they are accurately positioned and firmly secured against possible displacement when concrete is placed. Anchor bolts projections and placements tolerances shall meet specified requirements and shall be dampened when required.

  • Equipment:

    Buckets, hoppers, chutes and other equipment to be used for concrete placement, consolidation and finishing shall be inspected for cleanliness prior to use. All equipments shall be kept free of built up placement.

  • Delivery Time:

    Delivery and placement of concrete shall be well scheduled to avoid excessive delays. In no case shall the maximum elapsed time from the cement entering the drum until completion of discharge be greater than one and one-half hours.

  • Placing Concrete:
    • Concrete shall be placed consolidated in horizontal layer which shall not exceed 750 mm in thickness. Concrete shall be allowed to flow laterally a distance greater than 1.5 meters from point of deposit.
    • Where concrete is placed by pumping, the requirement of contract specifications to be followed.
  • Vibrating:
    • Concrete shall be consolidated by the use of vibrator in such number and power as to properly consolidate as approved by the Client.
    • Vibrator shall not be used to move or spread concrete horizontally.
    • Vibrator shall be operated in a near vertical position and allowing the vibrating head to penetrate the upper layer under its own weight and to enter and vibrate the concrete in the upper portion of under layer concrete.
    • A stand by vibrator and power source shall be available during concrete placement.
  • Consolidation :

    During and after placement, concrete shall be thoroughly consolidated and worked around all reinforcements and embedment and into the corners of the forms. Mechanical vibrators, of suitable type and size for the work at hand, shall be used. The mechanical vibrators shall be supplemented by hand spacing, rodding or tamping where necessary to assure proper consolidation in accordance with the recommended practices of ACI-309. Vibration of formwork, and reinforcing shall not be permitted. Mechanical vibrators shall be inserted and withdrawn vertically at uniformly spaced location not farther apart than the visible effectiveness of the machine. Care shall be taken to prevent the vibrator from touching the reinforcing material, embedded items and formwork.

  • Finishing:

    Formed concrete, unformed concrete and floor slabs shall be finished in accordance with eh design specification and drawing. Finishing operations for concrete paving shall consist of consolidation, striking off, longitudinal floating, straight edging and either screened finish or wood floated finish or steel trowelled finish or broom finish or nonslip finish as per requirements.

  • Removal of Forms and Shoring:

    Forms shall not be removed until it is assured that the concrete has developed sufficient strength so that it will not be damaged during the removal operation or by removal of shoring and supports.