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2. Survey and Investigation

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CD WORKS The CD Works having less than ... Centering and shuttering must be certified by the Asst. Engineer before pouring of concrete. ... In case of masonry ... – PowerPoint PPT presentation

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Title: 2. Survey and Investigation


1
  • 2. Survey and Investigation
  • Field Visit.
  • Land Particular.
  • Taking Initial level.
  • Initial Photographs.
  • Collecting information from local people about
    field condition.
  • Information about nearest approved quarry.
  • Soil condition by digging trail pit.
  • Information about Job Seekers.
  • Feasibility of the Project.

2
Preparation of Estimate
  • Plan, Elevation, Section of the project
    (according to field condition).
  • Lead statement according to quarry chart.
  • Analysis of rates should be prepared as per
    current Schedule of rate / Prescribed labour
    rate.
  • Calculation of quantities according to plan.
  • Labour and Material statement.
  • Project report (Report should be self explanatory
    about the project)
  • Preparation of Bar Chart.
  • Preparation of peoples estimate
  • Estimate should be Technically Sanctioned
    Administratively approved By competent authority
    as per the power assignment to them.
  • T.S.- Rs Up to _ J.E./GPTA- Rs3.00 lakhs,
    A.E.-Rs6.00 Lakhs, E.E.- Rs50.00 lakhs
  • A/A- Rs up to _ BDO- Rs10.00Lakhs,
    Chairperson- Rs20.00Lakhs,CEO- gtRs20.00 lakhs
  • Estimate prepared as per sanctioned amount.
  • What is an Estimate?
  • Why we will make an estimate?
  • How to make an Estimate?

3
Types of Estimate
4
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5
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6
EXECUTION
  • Road work-
  • Earthen road
  • Demarcation for new work by the competent
    authority .
  • Alignment- Proper alignment should be given
    according to the site condition
  • Initial Level shall be taken.
  • Curve- Fixing of curves ( Vertical, Horizontal)
  • Gradient-Proper gradient should be maintained.
    (Minimum 150 for rural road, 118 for Ghat)
  • Camber-Proper camber should be maintained.
  • Bar chart
  • Drainage
  • Compaction should be made by PRR
  • Side Slope of the formation ( Minimum 11 for
    Cutting ,11.5 for fillmg)

7
Cement Concrete road
  • It should be inside the habitation.
  • Excavation of cut off walls including shallow
    drains if required.
  • Filling of Sand to have a proper sub base and
    level with minm. Thickness of 6 inches.
  • Side Shuttering for cut walls.
  • Construction/Expansion Joint should be at uniform
    interval
  • C.C ( 148) with 40mm size H.B.G. Metal (Min 4
    inch)
  • C.C (124) with 12mm size H.B.G chips (Min 3
    inch)
  • Proper camber should be maintained.
  • Proper curing must be ensured.
  • Filling of both side flanks should be by earth/
    moorum.

8
W.B.M Road (Grade -I)
  • Earth work in Flank dressing.
  • Providing Morrum and sand admixture( 75 morrum
    and 25 sand) in sub-base with proper camber and
    compaction by PRR with watering.
  • Providing Grade I metalling with 40mm to 90mm
    size hard stone metal filling interstices with
    morrum/ stone screenings and crusher dust.
  • Proper compaction shall be made by PRR including
    watering.
  • Filling of Flanks by Morrum / Excavated earth
    from the drain.
  • Proper drainage should be ensured.
  • Heavy traffic shall not be allowed.

9
CD WORKS
  • The CD Works having less than 6 Mtr span is a
    culvert.
  • A field visit and reconnaissance survey to be
    done for finalising the number of CD Works and
    its position.
  • To find out the vent size, the bed width of the
    existing nallah should be taken into
    consideration.
  • Emphasis should be given to the U/S and D/S cut
    off wall of the structure prior to the
    construction of the apron.

10
RENOVATION OF TANK
  • Initial Photograph and initial Level shall be
    taken before execution.
  • Assuming a final level, lead lift and the cost
    of the quantity shall be calculated depending
    upon the funds position.
  • Slope of the Embankment should be maintained at
    1.51.
  • Excavation should be done from the middle of
    portion the tank and the earth should be
    deposited at the outside slope of the bank.
  • Provision shall be made to dispose the excess
    earthwork.
  • Provision for turffing, slope packing, inlet,
    outlet and bathing ghat shall be made according
    to the requirement.

11
NEW TANK/ MO POKHARI
  • Demarcation of the area must be done prior to the
    lay out by the competent revenue authority.
  • The area excavated/embankment area and the toe
    line should be marked before execution.
  • Initial Level must be ensured.
  • Toe line of the embankment must be 10ft away from
    the excavation line.
  • Earth excavated shall be laid in layers of 30cm
    including breaking clods to 5 cm to 7 cm size.
  • Provision shall be made to dispose the excess
    earthwork.
  • Proper benching of side slope area shall be made.
  • Provision for turffing, slope packing, inlet,
    outlet and bathing ghat shall be made according
    to the requirement.

12
BUILDING
  • Construction area must be demarcated before
    execution of work.
  • A site plan showing north point should be made.
  • Initial photographs shall be taken before
    execution in case of incomp./renovation works.
  • Drawing showing the plan, elevation and cross
    section must be approved by the competent
    authority.
  • Trial pit section of the soil/soil test report
    should be obtained.
  • Design particulars.
  • Detail specification of the items as per codal
    provision.
  • Lay out should be given as per the approved
    drawing.
  • In RCC works pre-measurement of steel must be
    taken and it should be chck measured by the Asst.
    Engineer before laying of concrete.
  • Minimum 50 dia of the steel shall be provided in
    case of lapping.
  • Minimum cover to the steel should be maintained
    as per ISI code.

13
  • Centering and shuttering must be certified by the
    Asst. Engineer before pouring of concrete.
  • Key holes should be provided in between every
    lift of the column.
  • In case of masonry walls, joint should be left in
    stepped manner.
  • A thin membrane must be provided in between RCC
    and masonry joints.
  • Before doing brick masonry, brick should be
    sub-merged in water for 8 Hrs minimum.
  • Joints in case of tensile members must be
    prohibited as far as practicable.
  • Roof should be casted at a stretch without
    leaving any joints. If required, joint should be
    placed over the support point and joint must be
    sloped at 45 Degree.

14
QUALITY CONTROL
  • Sand Hard, Strong, durable, clean particles free
    from silt and clay.
  • Moorum Good quality granular moorum from
    approved quarry satisfied with the P.I. value.
  • Water Normal portable water shall be used.
  • Metal/Chips Hard, Black, Granite, free from skin
    and flaky materials.
  • Cement Ordinary Portland cement
    (IS269)/Portland slag cement (IS455) should be
    used.
  • Steel SAIL steel must be used.
  • Water-Cement ration shall be maintained at 0.4 to
    0.5 to achieve the desired strength of the
    concrete.
  • Proper compaction should be done to avoid
    honeycomb.
  • Proper curing should be ensured from the 2nd day
    up to 28 days.

15
MEASUREMENT
  • Metallic/Steel Grip tap shall be used for
    measurement.
  • In MGNREGA works, the measurement should taken in
    every 7 days.
  • In earthwork, pit measurement should be made
    initially but before final bill, the quantity
    paid must be matched with the quantity calculated
    by final level section.
  • In case of Road works, measurement in a
    particular interval (15 Mtr/30 Mtr) should be
    taken.
  • In case of building works, detail measurement of
    each item should be taken.

16
PREPARATION OF BILLS
  • Abstract of Bill shall be prepared from Quantity
    arrived from measurement.
  • The labour and material component shall be
    calculated separately.
  • Labour component should be reflected in the
    Muster Roll.
  • Unique numbered Muster Roll duly authenticated by
    competent authority shall be used and must be
    maintained on daily basis.
  • The Vigilance and Monitoring committee members
    should certify the authenticity of muster roll.
  • Authenticated vouchers having TIN number should
    be obtained against the materials.
  • Royalty, Cess, VAT should be calculated properly
    and deducted from the Bill.

17
COMPLETION OF PROJECT
  • Before payment of the final Bill, the final
    photograph shall be taken and kept in case
    record.
  • After payment of the final Bill, Completion
    certificate shall be furnished mentioning the
    completion date and number.
  • The completed projects shall be entered in the
    Asset Register.
  • Team Members
  • Sri P.K.Kodamsingh,. AE, Nuagan, Nayagarh
  • Sri P.Ch.Sahu, AE, Paralakhemundi
  • Sri Ramesh Ch. Sethi, AE, Khaira
  • Sri Alok Mishra, Estimator, DRDA, Anugul
  • Sri P.K.Das, Estimator, DRDA, Khordha
  • Sri Pabitra Ku. Sahu, JE, Nabarangpur
  • Sri Babu Mallick, JE, Koraput
  • THANK Q
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