Transcript gpta trainning technical session

GPTA Training
(Technical)
PK Kadmasingh
Pradosh Das
G.P.T.A. TRAINNING TECHNICAL SESSION
1. 1. Unit of measurement.
Type
Length
Area
Volume
British or FPS Unit
SI Units (International Standard Units
1
Inch=
25.4
MM
1
MM=
0.03937
Inch
1
Foot=
0.3048
Metre
1
Metre=
3.2808
Feet
1
Mile=
52798.5564
Feet
1
KM=
1000
Metre
1
Mile=
1.6093
Km
1
Km=
0.6214
Mile
1
Sq. Feet=
0.0929
Sq Mtr.
1
Sq Mtr.=
10.7639
Sq. Ft.
1
Acre=
43560
Sq. Ft.
1
Acres=
100
Sq. Mtr.
1
Acre=
4046.86
Sq. Mtr
1
Hectare=
100
Acres
1
Acre=
0.4047
Hectare
1
Acres=
1076.39
Sq. Ft.
1
Hecatere=
2.471
Acre
1
Cft=
0.2832
Cum
1
Cum=
35.31
Ctf
1
Acreft=
43560
Ctf
1
Hec. Mtr.
10000
Sq. Mtr
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.
Preparation of Estimate
•What is an Estimate?
•Why we will make an estimate?
•How to make an Estimate?
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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- >Rs20.00 lakhs ]
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Estimate prepared as per sanctioned amount.
Types of Estimate
Earthen Road
New Formation
Existing Formation
Ghat Road
Paved Road
WBM Standard
C.C.Road
with Drain
C.C. Road
with out drain
Small Structures
H.P. Culvert
Retaining &
Guard Walls
R.C.C. Culvert
Causeways
Water Body
Renovation of
village Ponds
Excavation of
new Tanks
Mo Pokhori
W.H.S. with Canal
Building
Load Bearing walls
Frame Structures
Tile Roof/
AC/GCI sheet Roof
IAY/MoKudia
EXECUTION
• Road work-
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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 1:50 for rural road, 1:18 for Ghat)
Camber-Proper camber should be maintained.
Bar chart
Drainage
Compaction should be made by PRR
Side Slope of the formation ( Minimum 1:1 for Cutting ,1:1.5 for fillmg)
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 ( 1:4:8) with 40mm size H.B.G. Metal (Min 4 inch)
• C.C (1:2:4) 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.
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.
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.
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 1.5:1.
• 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.
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.
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.
• 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.
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 (IS:269)/Portland slag cement
(IS:455) 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.
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.
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.
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:
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2.
3.
4.
5.
6.
7.
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………