NREGA Technical Aspects Of Execution Of Works S.Anwar HussaIn

1. NREGA
Technical Aspects of
Execution of Works

2. Objectives of NREGS
• To provide not less than 100 days of
Guaranteed Employment in a financial
year to every house hold
• Creation and maintenance of
durable assets
• Efforts should be made to utilize
local materials and cost effective
and disaster resistant technology
developed by various institutions
and as applicable to the area.

3. Emphasis while creating
Rural Infrastructure
• Labour intensive works
• Material component not to
exceed 40% of the estimate cost.
• Material component include
wages of skilled/semi- skilled
workers

4. Type of works under the
scheme in the order of priority
• Water conservation and Water
harvesting
• Drought proofing (Afforestation and
tree plantation)
• Irrigation canals
• Provision of irrigation facility to land
owned by SC/ST/beneficiaries under
Indira Aawas Yojana
• Renovation of traditional water
bodies

5. Type of works …
• Desilting of tanks
• Land development
• Flood control and protection works
including drainage in water logged
areas
• Rural connectivity to provide all
weather access
• Other works notified by the
Central/State Government

6. Water conservation and Water
harvesting
Earthen Bund
Stone Bund
Continuous Contour Trench
Water Absorption Trench
Loose Boulder Structure
Earthen gully Plug
Gabions

7. Farm pond
Sunken Pond
Check dam
Mini Percolation tank
Percolation tank
Diversion Drain
Feeder channel
Sub surface Dam
Staggered Trench

8. Drought proofing (Afforestation
and tree plantation)
Pasture Development
Block Plantation
Horticulture plantation
Barren Hill Plantation
Avenue Plantation

9. Irrigation canals
Feeder Channel
Diversion Drain
Pick up Anicut
Supply Channel
Open wells
Field Channels
Main canal
Distributory Canals
Lift Irrigation

10. Renovation of traditional
water bodies
Desilting of tanks
Repairs to tanks
Rehabilitation of MI source

11. Land development
Earthern Bund
Stone Bund
Loose Bolder Structure
Earthen gully plugging
Land leveling
Stone terracing
Boulder removal
Pebble Bunding

12. Flood control and protection
works including drainage in
water logged areas
Drains in the open field
Filling the low lying areas
Revetment to bunds
Diversion drains in meandering
streams

13. Rural connectivity to
provide all weather access
• Roads can be taken up as last
priority not exceeding 10% value of
all types of works taken up.
Earthen Roads
WBM Roads

14. Gully Plugging

15. Continuous contour

16. Loose Boulder Structure

17. Wire gabion structure

18. Gabion

19. Check Dam with locally
available materials

20. Earthen bund

21. Stone Bund

22. Water Absorption Trench

23. Percolation Tank

24. Mini Percolation Tank

25. Sub Surface dams

26. Sub Surface Dam…contd

30. Preparation of Projects

31. Preparation of Projects
• Detailed Investigation
• Preparation of
1.Detailed Estimate
2.Conveyance Statement
3.Data
4.Location Map and Site Plan
5.Other Drawings, if any
6.Estimate Report
7.Other Tables

32. Detailed Investigation
• Estimate to be prepared in the
presence and after discussion with the
local people
• Location plan to be sketched
immediately on arrival at the site
• Site plan to be sketched
• Lorry approach and head load to be
noted
• Nature of soil to be noted (whether OS,
HS, OR, etc.

33. …contd
• Sources of materials
• Level of GWT to be ascertained with
the help of local people
• Requirement of water for irrigation
and no. of days for irrigation
• Specific problems and their solutions
through rural appraisal

34. Structural Design

35. Preparation of Detailed
Estimate
• Based on structural design
• Items to be identified first
• Quantities to be worked out

36. Conveyance Statement
Based on Taluk Conveyance approved by the Chief Engineer
Sl. addl Total
No. Description LL, km 1st 10 km km LL HL Total
1 Rubble and broken stone 15 271.60 12.20 332.60 68.90 401.50
2 Sand 28 168.35 8.40 319.55 50.10 369.65
3 Bricks 23 227.10 11.40 375.30 67.45 442.75
Wire cut bricks, roofing tiles
4
and flooring tiles 29 227.10 11.40 443.70 67.45 511.15
5 Surkhi, lime 29 137.90 7.50 280.40 24.40 304.80
6 Cement, MS rod 5 187.20 187.20 24.70 211.90
7 Timber scantlings 35 137.90 7.50 325.40 24.40 349.80
Crushed broken stone below
8
22mm 62 168.35 8.40 605.15 50.10 655.25
9 Gravelly earth 5 126.50 126.50 50.10 176.60
10 Bitumen 5 187.20 187.20 24.70 211.90

37. Rate as approved by DC
(Add for HL, if required)

38. Conveyance Certificate
• Regarding conveyance charges for
materials, a certificate as noted below,
from an officer not below the rank of
an Assistant Engineer, should be
attached with all estimates.
“The distances noted in the data for
conveyance from quarry or source
have been personally verified by
me and are found correct. These
are the minimum leads required.”

39. Preparation of DATA based on
• Schedule of Rates
• NREG minimum rate
• Market Rates
• Forest SOR
• Rates of Agricultural Department
• Observation (Observed DATA)
• Soil Conservation Data

40. Abstract of Estimate
• Provision of Hire Charges for T & P
• Provision for Work Site Facilities
• Safe drinking water
• Shade for children and periods of rest
• First-aid Box for emergency treatment and
minor injuries
• Health hazards connected with work to be
provided
• One woman worker to look after five or
more children below the age of six years
Deputed woman shall be paid wage rate

41. Estimate report
1.Explain the necessity of
work
2.Benefits
3.Labour Component

42. Location Map and Site Plan
• Location Map and Site Plan to
accompany every estimate
• Direction to be noted
• Land mark to be noted
• A third person should be able to
locate the site by seeing the map

43. Other Tables
• Schedule showing Skilled/ Unskilled
Labourers for Each and Every Item
• Total no. of skilled/semi skilled/unskilled
labourers
• Percentage of Labour and Material
• Programme chart showing the number of
days and number of labourers and
• Quantities of different materials for each
period

44. Construction of Check Dams and
Improvements to Thodu

45. Sample Estimate
- Structural Design

46. …contd
Design of Weir
Height of weir, H = 1.5 C3
Height of shutter, S = 0.5 C4
Density of water, w = 1000 C5
Density of material of weir, wd = 2000 C6
Width of crest, a = 1.0625 C7 0.55*((SQRT(C3)+SQRT(C4)))
Bottom width, b = 1.2 C8
Overturning Moment, Mo = 1333.3 C9 C5*(C3+C4)^3/6
Overturning Moment adding 50% extra
for unexpected eventuality 2000 C10 1.5*C9
Resisting moment, Mr = 2036.3 C11 0.25*C8*C3*C6*(C8+C7)

47. Detailed Estimate
No
It.No. Description of items . L B D Quantity
1 Clearing grass and other overgrowth of
vegetation and small trees of girth up to 30
cm including rooting out and removal of
rubbish up to a distance of 150 m out side
the periphery of the area cleared.
Base 1 50 3.5 175
Side 2 50 1.75 175
Total 350 m2
2 Putting up ring bund with sand filled bags in two
metres in height including filling with hard
earth cut and conveyed from outside
including dismantling after copletion of work. 1 4.5 4.5 m
3 Bailing out water by engaging man-mazdoors
(For 2 days per anicut @2persons ie. 2x2=4
persons) 4 4 Nos.
4 Earth work excavation in ordinary soil with all
lead and lift etc. complete including breaking
clod, ramming, watering etc.
Loose deposited earth 1 4.5 1.5 0.3 2.025
Say 2.1 m3

48. …contd
5 Earth work excavation in hard soil except hard
rock(which requires blasting) and using the spoil
for filling the lower portion including all lead and
lifts.
Foundation 1 4.5 1.5 0.6 4.05
Say 4.1 m3
6 Construction of the anicut using picked up stones
conveying and placing in position and neatly
completed as directed by the field staff.
Foundation 1 4.5 1.5 0.6 4.05
Super structure 1 4.5 1.15 1.5 7.7625
Total 11.8125
Say 11.9 m3
7 Earth work excavation in all classes of soil for
desilting the thodu and dumping away the earth
far away in order to avoid re-entry of the soil
into the thodu.
Desilting the thodu 1 700 3.5 0.3 735
Say 735 m3

49. DATA

50. …contd

51. …contd

52. ABSTRACT OF ESTIMATE

53. …contd

54. …contd

55. Schedule of Labourers

56. …contd
Unsk/Skil/Mate

57. …contd

58. Another Sample Estimate

61. Schedule of labourers

62. Technical Sanction
Authority issuing TS shall be satisfied
1) about the Structural Safety
2) that the quantities provided are enough
to complete the work
3) that the items are as per specification
4) that the rates are reasonable
5) that the TS amount is within AS amount
“TS issuing authority may visit the site, if
necessary, before according TS”

63. …contd
The TS issuing authority shall verify that
every project proposal contains
1.AS
2.Estimate Report
3.Detailed Estimate
4.Data
5.Abstract of Estimate
6.Conveyance Statement
7.Location Map and Site Plan
8.Structural Drawings, if any
9.Other Tables

64. Technical Sanction to be issued by
TS Committee
GO(Rt)No. 2107/2006/LSGD dt.26.08.2006
GLTC
• TS Committee to contain Chairman,
Convenor and Members
• Chairman- LSGD Assistant Engineer
• Convenor-Accredited Assistant
Engineer

65. Technical Sanction Power
• By GLTC for works upto
Rs.3,00,000/-
• By BLTC for works beyond
Rs.3,00,000/-

66. •Peoples’ Estimate
•Local Language for
Estimates

67. A new work under the Scheme shall be
commenced only if;-
a) at least fifty labourers become
available for such work; and
b) the labourers cannot be absorbed in
the ongoing works;
A period of employment shall ordinarily be
at least fourteen days continuously with
not more than six days in a week.

68. Measurement Book

69. Risk up to 15 years after retirement
Do not erase/tamper measurements
No over writing
Measurements can be scored
Measurements shall be easily
traceable at site
Page Certificate
Date

86. Level Field Book
Issued
Page Certificate
Name of Officer taking Levels/Check
Levels
Date
TBM
Closed at Starting TBM

87. FORMS
KPW FORM 21- Measurement Book
KPW FORM 22- First and Final
KPW FORM 23- Running Account Bill
KPW FORM 24- Hand Receipt

88. Technical Management of
Works in NREGS
• Selection of Workers
• Meeting of the workers and Awareness
Class on the nature of work, cost of work,
out turn of each work per day and wage
rate and unit rate
• Awareness Class to the Kudumbasree ADS
(Area Development Societies) Volunteer
• Role of Kudumbasree ADS volunteer
• Discussion with Agricultural Labourers and
Agriculturists to chalk out the programme
without affecting the routine agriculture
activity

89. In the meeting with workers explain
• explain the provisions of the Act
• the system of payment of wages
• SOR
• information on worksite facilities
• entitlements in the event of their
injury by accidents or death or injury
or death of any child accompanying
the worker
• that no discrimination in payment of
wages will be done only on the basis
of gender

90. Responsibilities of Technical Staff
• See that the Estimates are displayed at
site
• Supervision of Overseer/Assistant Engineer
daily
• Supervision of Assistant Executive
Engineers once in a week
• Weekly measurements/check
measurements
• Measurements in the presence of a
group of workers
• Worksite management - Work out turn and
wages
• Part bill every fortnightly

91. Measurements/Check
measurements
• For work costing upto Rs.50,000/-
Measurement and preparation of bill-
Overseers
Check measurement- Assistant
Engineers
• For work costing more than Rs.50,000/-
Measurement and preparation of bill-
Assistant Engineers
Check measurement- Assistant
Executive Engineers

93. Muster roll
• Muster roll Maintenance/verification
• One Muster Roll for 25 to 50 persons
for 14 days period
• Period of Muster Roll, name of work
and name of Grama Panchayat on
top

94. Muster roll
• Custody and maintenance of Muster Roll
- Issue/receipt of Muster Roll
through Muster Roll register
- by Kudumbasree ADS Volunteer
- attendance to be marked at 9 am
and 4 pm
- total no. of workers should be
shown at the bottom on each day

95. Muster roll
• on the 14th day evening or after
completion of the work, Muster Roll to be
closed and abstract prepared (skilled,
unskilled, men women, SC/ST etc. to be
shown at the bottom)
• Muster Roll to be returned to the GP
Secretary
• Muster Roll to be cross checked with bills
• Verification of Muster Rolls and attendance
by Overseers/AE/AEE/Block Program
Officer/GP Secretary

102. Pre measurements for
Jungle Clearance, Foundation,
Reinforcement, Stack Measurements, etc.
Depth/size/initial levels of existing
tank/well/canal before improvement
Initial levels of the existing ground before
land development
Level measurements for earth work for
more than 600m3/km
Verification certificate after completion of
the pre measured items

103. Documentation before and after
the work

104. The services staff connected with
NREGA can be audited for quality of
service.

105. NREGA