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    MOS Mechanical Pipes Laying

    Uploaded by

    magdi badran
    This document outlines the method of statement for mechanical works related to sanitary drainage in buildings. It details the necessary materials including PVC pipes, fittings, joining compounds, and tools. The execution section describes the process of laying out and installing the piping system which includes excavating trenches, installing horizontal and vertical pipes, joining pipes with solvent cement, adding sand bedding and compacting it, performing leak testing, and ensuring proper installation and support of the piping. The overall purpose is to provide construction guidelines for an effective and qualified sanitary drainage system.

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    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd

    MOS Mechanical Pipes Laying

    Uploaded by

    magdi badran
    66 views3 pages
    This document outlines the method of statement for mechanical works related to sanitary drainage in buildings. It details the necessary materials including PVC pipes, fittings, joining compounds, and tools. The execution section describes the process of laying out and installing the piping system which includes excavating trenches, installing horizontal and vertical pipes, joining pipes with solvent cement, adding sand bedding and compacting it, performing leak testing, and ensuring proper installation and support of the piping. The overall purpose is to provide construction guidelines for an effective and qualified sanitary drainage system.

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    MOS Mechanical Pipes Laying

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    This document outlines the method of statement for mechanical works related to sanitary drainage in buildings. It details the necessary materials including PVC pipes, fittings, joining compounds, and tools. The execution section describes the process of laying out and installing the piping system which includes excavating trenches, installing horizontal and vertical pipes, joining pipes with solvent cement, adding sand bedding and compacting it, performing leak testing, and ensuring proper installation and support of the piping. The overall purpose is to provide construction guidelines for an effective and qualified sanitary drainage system.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    66 views3 pages

    MOS Mechanical Pipes Laying

    Uploaded by

    magdi badran
    This document outlines the method of statement for mechanical works related to sanitary drainage in buildings. It details the necessary materials including PVC pipes, fittings, joining compounds, and tools. The execution section describes the process of laying out and installing the piping system which includes excavating trenches, installing horizontal and vertical pipes, joining pipes with solvent cement, adding sand bedding and compacting it, performing leak testing, and ensuring proper installation and support of the piping. The overall purpose is to provide construction guidelines for an effective and qualified sanitary drainage system.

    Copyright:

    © All Rights Reserved
    Download as DOC, PDF, TXT or read online from Scribd
    Download as doc, pdf, or txt
    of 3

    METHOD OF STATEMENT

    FOR
    MECHANICAL WORKS FOR
    SANITARY DRAINAGE

    METHOD OF STATEMENT
    Scope: This method of statement applies to mechanical works for
    sanitary drainage of buildings.

    Purpose: The basis of construction /installation for effective and


    qualified results

    Significant materials needed:


    a. Approved shop drawing (At site)
    b. PVC schedule 40 pipes and fittings (Trans.# )
    c. PVC Joining Compounds and cleaner
    d. Plumbing tools
    e. Level equipment

    Abbreviations:
    ASTM American Society for Testing Materials
    UPC Uniform Plumbing Code
    IAPINO International Association of Plumbing and
    Mechanical Officials
    PVC Poly Vinyl Chloride
    Execution:
    a. Open the approved shop drawing and know the location
    of pipes/ fittings.
    b. After determination of location based on measured
    distances, make markings/indications for excavations
    using pointed metal bars and paint spray or white sand,
    use straight Edge Wood, or Cloth Thread nylon rope or
    simply 2mm plastic rope to make line to be sure to
    excavate in straight run.
    c. Deep of execution should be enough to lay the pipe base
    on 1% slope invert level. The 10cm thick of fine sand
    around the pipe plus 5 cm clearance. Excavation should
    start from main sewer line and then inside the villa just to
    be sure that the drainage waste shall go directly to main
    sewer line.
    d. Install / layout the popes and fittings.

    d1. Start pipe layout from deepest invert level that is


    located outside villa fence and below the grade beam by
    using level equipment it locates the right laid position
    and height of pipe.

    d2. After getting the level, fixed the pipe not to move
    up and down on both sides.

    D3 Finished fixing all horizontal pipes/fittings w/


    mixing application of D2.
    D4 Install vertical pipes (i.e. soil stack, fixtures and
    cleanouts). Cover the vertical pipes with end cap cover.

    D5 Recheck the pipe installed before putting fine sand

    D5.1 Check for straight look.


    D5.2 Check presence of solvent cement in each joint
    D5.3 Check for pipe support.
    D5.4 Check for pipe invert level based on shop drawing.
    D5.5 Check for unnecessary materials w/in the layout
    portion, remove and bring to safe location.
    D6 Carefully put fine sand side by side up ¾ the
    diameter of the pipe. Compact the sand slowly as
    possible so as to project pipe from movement and hitting
    from solid material while compaction is on going.

    D7 Make final check before leak testing.

    D7.1 Check pipes for any cracks.


    D7.2 Check pipes from undesired materials and should
    be removed at once.
    D7.3 Check the appearance of pipes / fittings that means
    not fully covered by fine sand
    D7.4 checks all end pipes are capped and the inside of
    pipe should be free from unnecessary materials. Remove
    if it has.

    e. Leak testing of sanitary drain pipes


    e1. Check all openings if tightly closed except the
    highest point.
    e2. Fill the pipes with water up to the point of
    overflow.

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