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    Construction Practises: Concrete: Production B. Bhattacharjee Civil Engineering Department Iit Delhi

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    SadatcharaMoorthi N
    The document discusses formwork used in concrete construction. It begins with definitions of key terms like formwork, mould, scaffolding, centering, falsework, and shutter. It then discusses topics like ensuring good formwork through fast erection and de-shuttering, achieving good concrete quality and surface finish, safety considerations in formwork design, and achieving economy in formwork usage. Examples of different types of formwork for walls, beams, columns, stud walls, and slabs are shown through diagrams. The document was presented by B. Bhattacharjee of the Civil Engineering Department at IIT Delhi.

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    Construction Practises: Concrete: Production B. Bhattacharjee Civil Engineering Department Iit Delhi

    Uploaded by

    SadatcharaMoorthi N
    21 views19 pages
    The document discusses formwork used in concrete construction. It begins with definitions of key terms like formwork, mould, scaffolding, centering, falsework, and shutter. It then discusses topics like ensuring good formwork through fast erection and de-shuttering, achieving good concrete quality and surface finish, safety considerations in formwork design, and achieving economy in formwork usage. Examples of different types of formwork for walls, beams, columns, stud walls, and slabs are shown through diagrams. The document was presented by B. Bhattacharjee of the Civil Engineering Department at IIT Delhi.

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    The document discusses formwork used in concrete construction. It begins with definitions of key terms like formwork, mould, scaffolding, centering, falsework, and shutter. It then discusses topics like ensuring good formwork through fast erection and de-shuttering, achieving good concrete quality and surface finish, safety considerations in formwork design, and achieving economy in formwork usage. Examples of different types of formwork for walls, beams, columns, stud walls, and slabs are shown through diagrams. The document was presented by B. Bhattacharjee of the Civil Engineering Department at IIT Delhi.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    21 views19 pages

    Construction Practises: Concrete: Production B. Bhattacharjee Civil Engineering Department Iit Delhi

    Uploaded by

    SadatcharaMoorthi N
    The document discusses formwork used in concrete construction. It begins with definitions of key terms like formwork, mould, scaffolding, centering, falsework, and shutter. It then discusses topics like ensuring good formwork through fast erection and de-shuttering, achieving good concrete quality and surface finish, safety considerations in formwork design, and achieving economy in formwork usage. Examples of different types of formwork for walls, beams, columns, stud walls, and slabs are shown through diagrams. The document was presented by B. Bhattacharjee of the Civil Engineering Department at IIT Delhi.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
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    of 19

    CEL 774 CONSTRUCTION PRACTISES

    Concrete: Production
    (Form work )
    B. Bhattacharjee

    CIVIL ENGINEERING DEPARTMENT


    IIT DELHI

    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI


    1
    General Outline

    • Definitions
    • Mass Concrete
    • Cold weather problem
    • Concreting in cold w eather

    B. Bhattacharjee
    2
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Definitions: Form work
    Complete system of temporary
    structure built to contain fresh
    concrete so as to form it to the
    required shape and dimensions and to
    support it until it hardens sufficiently
    to become self-supporting. Formwork
    includes the surface in contact with the
    concrete and all necessary supporting
    structure.
    B. Bhattacharjee
    3
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Definitions
    Mould A frame for casting, precast
    concrete units
    Scaffold (Scaffolding)
    A temporary structure for gaining access to
    higher levels of the permanent structure
    during construction
    Centering (Centering)

    B. Bhattacharjee
    4
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Definitions
    Centering (Centering)
    It is a temporary supporting structure
    to a soffit. It is the specialized
    formwork used in the construction of
    arches, shells space structure where the
    entire false-work is (struck or de-
    centred) as a unit to avoid introducing
    injurious stress in any part of structure .

    B. Bhattacharjee
    5
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Definitions
    Falsework
    (a) Falsework is the temporary structure
    erected to support work in the process of
    construction . It is composed of shores,
    formwork for beams or slabs (or both) and
    lateral bracing.
    (b) That part of formwork, which upports
    the forms usually for a long structure,
    such as a bridge.
    B. Bhattacharjee
    6
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Definitions
    Form (Shutter)
    (a) That part of formwork, which consists
    of the sheeting and its immediate
    supporting or stiffening members.
    (b) A temporary structure or mould for
    the support of concrete while it is setting
    and gaining sufficient strength to be self-
    supporting.

    B. Bhattacharjee
    7
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    GOOD FORMWORK
    l HOW FORMWORK CAN BE ERECTED AND
    DE-SHUTTERED FAST.
    l HOW GOOD CONCRETE QUALITY AND
    SURFACE FINISH CAN BE ACHIEVED.
    l WHAT IS THE OPTIMUM STOCK OF
    FORMWORK REQUIRED FOR THE SIZE OF
    WORK FORCE, THE SPECIFIED TIME
    SCHEDULE AND FLOW OF MATERIALS.
    l HOW SAFETY CAN BE IMPROVED FOR
    THE SITE PERSONNEL.

    B. Bhattacharjee
    8
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    GOOD FORMWORK

    l WHAT IS THE OVERALL COST

    SAVINGS THAT CAN BE ACHIEVED

    USING THE RIGHT TYPE OF

    FORMWORK

    B. Bhattacharjee
    9
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Safety
    –ENSURED IF,
    • COMPONENTS ARE LIGHT IN WEIGHT FOR
    HANDLING AND PLACING
    • LOOSE OR HANGING COMPONENTS ARE
    MINIMAL
    • MINIMUM OPERATIONS ARE INVOLVED
    DURING EACH REPETITION
    • INDIVIDUAL COMPONENTS ARE SELF
    STANDING
    • LESS MAKING IS INVOLVED AT SITE

    B. Bhattacharjee
    • DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    10
    Safety

    • SYSTEMS FACILITATES FIXING AND


    REMOVAL AT EACH LOCATION
    –WITHOUT THE USE OF ANY
    SOPHISTICATED TOOLS AND TACKLES
    • SYSTEM HAS PROVISION FOR FIXING
    WORKING / CONTROL
    –PLATFORMS.

    B. Bhattacharjee
    11
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Wall form

    B. Bhattacharjee
    12
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    BEAM

    B. Bhattacharjee
    13
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Columns

    B. Bhattacharjee
    14
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Stud walls

    B. Bhattacharjee
    15
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Slabs

    B. Bhattacharjee
    16
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    Slabs

    B. Bhattacharjee
    17
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    ECONOMY
    –During design and sizing of members
    –Economy is all about achieving number of repetition
    –Choose the size that gives maximum repetition
    –Preferable to have same size of column and beam
    throughout
    –Symmetric and standardization
    –Economy in making, erecting, and stripping
    forms
    –Economy in formwork and overall economy

    B. Bhattacharjee
    18
    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI
    THANK YOU FOR
    HEARING

    DEPARTMENT OF CIVIL ENGINEERING, IIT DELHI


    19

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