Method of Statement of Conduits by unfoldsecrets

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             METHOD STATEMENT FOR INSTALLATION
                  OF Conduit and fittings




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                                TABLE OF CONTENTS



1        Purpose……………………………………………………………………………..                                 4
2        Scope of Work……………………………………………………………………..                              4
3        Responsible Personnel on Site…………………………………………………                       4
4        Storage…………………………………………………………….……………….                                 4
5        Pre-Installation……………………………………………………………………                             4
6        Installation…………………………………………………………………………                               5
7        Reference Documents………………………………………………………….                             6
8        Safety………………………………………………………………………………                                   6




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1. Purpose

           This method of statement covers the installation of conduits – Cast in situ, Concealed
           on Block Walls, Surface mounted and Underground Installations as defined in the
           General Specification.



2. Scope of Works

           This procedure will define the method to be used to ensure that conduit installations
           and workmanship are correct and acceptable and shall conform to the Contract
           Documents and Specification.



3. Responsible Personnel on Site

   3.1.   Construction Manager
   3.2.   Electrical Field Engineers
   3.3.   Safety Officer
   3.4.   QA/QC Engineer
   3.5.   Electrical Supervisors



4. Storage

   4.1 Conduits shall be properly supported and stacked on a flat surface.
   4.2 Conduits shall be protected from sunlight and moisture by covering them with tarpaulin.
   4.3 Conduit fittings shall be stacked properly in neat and orderly manner.



5. Pre-Installation



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   5.1 All materials and documentation relevant to this particular Section of works will be
       checked by the Construction Department prior to the commencement of works. Ensure
       that all materials to be installed are inspected and accepted by the Consultant.
   5.2 Access to start the work will be confirmed that they are in a suitable condition for
       permanent works to commence.




6. Installation

   6.1 Conduit Installation – Cast in situ

       6.1.1 Measure and mark-up shuttering for the position of the boxes.
       6.1.2 Fix the boxes on their designated locations. Ensure that the Boxes are filled with
             polystyrene to prevent cement sediment to accumulate inside the boxes.
       6.1.3 First layer of reinforcing bar to be installed.
       6.1.4 Installed in situ conduits as per requirements, tie the conduits into the reinforcing
             bars. Ensure that the maximum run of conduits between two boxes shall not
             contain more than three (3) quarter bends. Ensure that the maximum run of
             conduit between boxes shall not exceed 25m for straight runs. In any cases that
             the straight run of conduit will exceed 25m, pull boxes shall be installed.
       6.1.5 Wherever necessary, nylon rope shall be pulled into the conduit run for future
             purposes. Leave a slack of 300mm minimum at each end of conduit.
       6.1.6 After installation of conduits, the second layer of reinforcing bar installation will
             proceed. Ensure that all installed conduit shall be taken care off.
       6.1.7 Raise Request for Inspection of Conduit Installation.
       6.1.8 Shutter closing and concreting will commence.


   6.2 Embedded Conduits on Walls

       6.2.1 Mark the position of boxes and conduits on the walls.
       6.2.2 Chase the wall using appropriate tools i.e., electric concrete cutter and chisel.
       6.2.3 Fix the boxes on their final position. Make sure that the boxes are properly
             protected with polystyrene to prevent entry of foreign materials.
       6.2.4 Install embedded conduits.
       6.2.5 Raise Request for Inspection of Conduit Installation.
       6.2.6 After the works has been inspected, plastering of walls will commence.



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  6.3     Surface Mounted Conduit Installation

        6.3.1 Establish the conduit route and mark using chalk liner on ceiling or walls.
        6.3.2 Mark the position of the boxes.
        6.3.3 Install the boxes on their proper location.
        6.3.4 Install saddle clamp base. For non-metallic conduits, spacing between saddle
              clamps will not exceed 1m, and for metallic conduit, spacing between saddle
              clamps will not exceed 1.5m.
        6.3.5 Install the conduit runs. Make sure that the conduit runs will not contain three (3)
              quarter bend.

                        o Where in the conduit runs will cross expansion joint, expansion
                          coupling will be used.
                        o Ensure that the spacing between parallel runs of conduit is uniform
                          throughout the installation.

        6.3.6 Raised Request for Inspection of Conduit Installation.


  6.4     Underground Duct Installation.

        6.4.1 Mark the route of the underground duct.
        6.4.2 Excavate the underground duct route until the required depth.
        6.4.3 Check the depth of the trench for proper elevation. Ensure that the trench is free
              from debris and foreign materials.
        6.4.4 Install the PVC duct.
        6.4.5 Raise Request for Inspection of PVC duct Installation.
        6.4.6 After inspection is carried out and the said works has been signed-off by the
              Consultant, back fill the trench with approved back-fill material.
        6.4.7 Install Warning Tapes 300mm below the finish grade.
        6.4.8 Raise Request for Inspection for Warning Tape Installation.
        6.4.9 After inspection is carried out and the works has been signed-off, back fill the
              trench until the finish grade. Ensure that the back fill material is properly
              compacted.


7. Reference Documents

  7.1     Approved Electrical Shop Drawings
  7.2     Approved Material Submittals for Conduits and Boxes
  7.3     Approved Material Inspection Report
  7.4     Approved Safety Plan
  7.5     Approved QA/QC Inspection Plan.



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8. Safety

   8.1       All safety precautions shall be followed as per approved safety plan & procedure.
             Ensure all involved persons are aware of the same.
   8.2       Tradesman shall ensure that before leaving their working places, it must be clean,
             tidy and free from rubbish.


                          ------------------------ Procedure End----------------------




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