Karnataka Integrated and Sustainable Water Resources ...knnlindia.com/kaveri2/awarenessmaterial/Construction...Karnataka Integrated and Sustainable Water Resources Management Investment

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Karnataka Integrated and Sustainable

Water Resources Management Investment

Program (KISWRMIP)

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CONTENTS Important works under GONDI COMMAND AREA ....................................................................................... 3

Important points to be observed during execution of each work. ...................................................................... 3

1. Removal of jungle .................................................................................................................................. 3

2. Earth work excavation for foundation ................................................................................................... 3

3. Improvement work of canal embankment ............................................................................................ 3

4. Construction of rough stone revetment ................................................................................................ 4

5. Cement concrete works ......................................................................................................................... 4

6. Construction and repair of Tube(Structure) .......................................................................................... 4

7. The outlet Construction ......................................................................................................................... 5

8. Removal of Silt ....................................................................................................................................... 5

9. Method of taking the measurement of removal of silt from the canal. ................................................ 5

Development works by the Society ................................................................................................................... 5

The following work can be taken up by the maintenance society. .................................................................... 6

Points to be observed while carrying out the canal development works. .......................................................... 6

Types of methods of quality work. .................................................................................................................... 6

Strengthening of the Canal Embankment. ......................................................................................................... 6

The quantum of water in the soil (OMC) ........................................................................................................... 7

Cement works. ................................................................................................................................................... 7

Points to be observed while selection of materials ............................................................................................ 8

1. JELLY ........................................................................................................................................................ 8

2. ROUGH STONE .......................................................................................................................................... 8

3. SAND ....................................................................................................................................................... 8

4. WATER ..................................................................................................................................................... 8

5. THE SOIL USED FOR EMBANKMENT. ............................................................................................................. 8

Preparation of Good Quality Cement Concrete ................................................................................................. 9

1. Neatly Storing of the Cement ................................................................................................................ 9

2. Quality of Coarse Aggregates ............................................................................................................... 10

3. Sand ...................................................................................................................................................... 10

Water Required For Concrete .......................................................................................................................... 11

Purpose of Water ......................................................................................................................................... 11

Implementation and maintenance of Records .................................................................................................. 11

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GONDI PROJECT COMMAND AREA DEVELOPMENT WORK

Important works under GONDI COMMAND AREA

Removal of jungle

Removal of silt from silt from canal/field irrigation canal

Earthwork Excavation for foundation

Cement concrete lining to the canals/FIC.

Improvement/Reconstruction of the outlet.

Important points to be observed during execution of each work.

1. Removal of jungle

Removal of jungle shall be finalised much before from where the jungle is to be removed.

Jungle should be removed from the root zone.

Anthills shall be removed (if present) and filled up with sand.

Do not remove all the trees at a time if trees are deep rooted.

2. Earth work excavation for foundation

As per the approved drawing marking (length & breadth) shall be made on the site.

Suitable supports shall be provided at the work site (watery and seepage sites) to avoid

slippage.

Suitable earth shall be sorted out of the excavated earth after getting suitable suggestions from

the engineer in charge.

Bed and sides shall be cut and trimmed as per the drawing.

3. Improvement work of canal embankment

Improvement of embankment means strengthening.

Precaution shall be taken to see that the new soil laid shall match with the old embankment.

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The vegetation shall be removed and disposed off from the new earthen quarry top surface and

soil shall be watered properly.

The new soil shall be laid in 20 cm thick over the prepared earthen surface uniformly where the

use of roller is not possible.

The soil shall be spread for 45 to 50cms more than the required width.

Plate compactor shall be used where the movement of roller is not possible.

The edges of extra soil shall be cut to the required shape.

If the density is not there required quantum of water shall be sprinkled and rolled till the density

is achieved.

Next layer of soil shall be placed only after the previous attains the required strength.

4. Construction of rough stone revetment

The face and slopes of field drain shall be

neatly dressed(as per the drawing)

There is no necessity of fresh revetment if the

present revetment is intact.

The size of the rough stone used for

construction of revetment shall not be less

than 30cms big and revetment thickness shall

be 30cms.

The rough stones shall be placed closely and perpendicular to the slope.

The gaps shall be tightened by wedging.

The surface shall be in in one line. No undulations.

5. Cement concrete works

The concrete works generally carried out for canal improvement, construction of outlet, sluice,

cross drainage works and for canal lining

CC M10, 40mm. shall be provided for the foundation of the structure.

CC M15, 20mm. shall be provided for lining and for coping and for structure walls.

The concrete shall be mixed in mechanical mixer or hand mixer based on the quantum required.

No segregation shall take place when the concrete is taken out of the mixer. To see that

adequate quantity of water shall be added(water/cement ratio).

The placed concrete shall be vibrated properly.

The concrete shall be cured till desired number of days.

6. Construction and repair of Tube(Structure)

The earth work excavation shall be carried up to the foundation level of the outlet.

The leakage through the pipe shall be identified and rectified using concrete/mortar.

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If the outlet pipe is of Hume pipe, the joints shall be properly plugged using 1:3 cement mortar.

The level of the pipe outlet shall not be altered.

The earth around pipe shall be provided using impervious soil and shall be compacted to

achieve the desired density.

The construction/repairs of outlet shall be as per the design and concrete works shall be cured

for 21 days.

7. The outlet Construction

The out let shall be constructed in proper location to feed the achkat from the parent canal.

The bed level of the outlet shall be of the same level of the parent canal.

The size of the outlet shall be enough to provide required quantity of water needed for the

outlet achkat.

The outlets shall be constructed based on the requirements in suitable places.

8. Removal of Silt

The quantity of silt removal from the canal bed shall be decided.

The removal of silt shall be carried out manually since the size of the canal is less.

Useful silt shall be transported to the field and the heavy useful silt shall be used for

construction of embankment.

No silt and Jungle shall be left in the canal under any circumstances.

9. Method of taking the measurement of removal of silt from the canal.

The quantum of removal silt shall be decided during the preparation of the estimate.

The silt shall not be removed below the bed level of sluice.

The removal of silt shall be disposed of to the designated places.

Development works by the Society

Person having experience in construction work, masonry and stone vaddars are available in the

villages. There are be hard working men/women dependant on coolie for their livelihood are

definitely available, Local people will get the coolie for more numbers of day, if the work is

carried out by the society. From this the coolies will not leave their places (migration)

There will not be any doubts regarding the quality of materials used and the quality of work

since the work is carried by the beneficiaries who maintain them.

The maintenance work can be taken up out of the possible savings of 10% to the society since

the work is carried out by local member of society.

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The following work can be taken up by the maintenance society.

Removal of Jungle on the bunds of the canal.

Removal of silt from the canal.

Carrying out masonry work from the locally available masons.

The economic condition will go up of the work carried out by the people same village.

Points to be observed while carrying out the canal development works.

The amount towards material and for coolie shall be calculated for the works to be taken up by

the society.

The quantity and quality materials required for the construction of the work shall be calculated

and purchased from those places at cheaper rates.

The attendance of coolies worked shall be maintained serially in the attendance register daily

during morning and afternoon.

The payment for supplier of materials shall be paid immediately after the completion of the

work.

The amount of work shall not exceed the estimated amount of labour and a material of the work is carried out by society. In this way 10% of the saving out of cost of work should be there.

Types of methods of quality work. Good quality of work in ensured if the work is carried out using good quality materials in the

approved manner.

The construction materials shall be got tested and approved from the designated Q.C officer of

the department before using for the works.

Good quality of rough stone of not less than 1 feet for the revetment is user.

The officer designated by KNNL conducting quality aspects during the execution of work shall

be got done the by water users co-operative Society.

Strengthening of the Canal Embankment.

The soil used for the construction of embankment of the canal shall be got tested and approved.

The required wetness shall be got done in the quarry.

The soil used for the work shall be spread in 15/20 cms thick as required during execution and

shall be consolidated to get the design density.

The lumps of soil more than 7.5 cms shall be removed / break.

The quantity of water shall be just sufficient to get the maximum density, the result of each layer

of embankment shall be obtained by the water users co-operative Society.

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The quantum of water in the soil (OMC)

The quantum of water is correct, when if the shape of the soil lump does not alter when a 1 inch

soil lump makes to fall down from 4 to 5 feet height to the ground.

The presence quantity of water is less, if cracks appear.

The presence of quantity of water is more, if the shape alter.

Cement works.

The moulds of 15cmx15cmsx15cms shall be made by the Q.C officer during execution of

concrete works and for which results of strength of concrete works given after 28 days of curing.

A letter shall be addressed to the QC authorities for testing by the WUCS.

The result file shall be kept thematically.

The Way of identifying the quality materials for the work by the WUCS / Villagers.

Better quality of materials not skilled labours are necessary to carryout good quality of work. by

experience, good quality of materials can be identified before the material is got tested by the

officer of Q.C by the WUCS.

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Points to be observed while selection of materials

1. JELLY Should be of hard granite.

Should not be flaky.

Shall not be oversized.

Shall not be mixed with stone powder/soil.

Shall not be of sand stone.

2. ROUGH STONE The rough stone are used for construction of field drains. They shall be strong enough.

Shall be strength enough / shall weigh heavily.

Shall not be sand stone or limestone.

The size of rough stone shall not be less than 0.30Mt (1feet) size.

3. SAND The sand shall be in the form of Crystal (sugar)

Shall not be mixed with silt/ soil.

Shall not be mixed with chemicals.

4. WATER The water shall not contains minerals/ chemicals.

The quality of water shall be pure.

5. THE SOIL USED FOR EMBANKMENT. Shall not be light weight.

Shall be in the form small crystals.

Shall not be cohesive when mixed with water.

Shall not expand when mixed with water.

Shall not be mixed with the chemicals.

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Preparation of Good Quality Cement Concrete

As per IS, if we say 33 grade of cement the strength shall not be less than at the end of 28days is

330kg/cms, the following points shall be observed while purchasing the 43 grade cement.

See the printed date and year when the cement manufactured.

Notice the ISI symbol and code No on each of the cement bag.

Observe the initial packing in intact.

Observe the weight of the cement bag, It shall be 50+1 kg or 50-0.5Kg.

The cement shall not be in lumps.

Coolness to the hands shall be felt when hands are inserted in the bag.

The cement particles shall float on the surface of water, when a hand full cement is spread.

afterwords the particles shall be dissolved slowly.

It shall be slippery when the cement is rubbed between finger. It shall not be rough.

The cement shall be used for the important is got tested for the suitable.

1. Neatly Storing of the Cement

Before storing in the godown, verify that in the floor, wall and roof shall be properly dried condition.

(water proof)

Keep the doors and windows closed to avoid damped air circulation.

The cement bags shall be stored on wooden plank or on tarpaulin only.

Do not store for more than 12 numbers on each of them.

The stored cement shall be removed for use on first come first basis.

Minimum 30cms of distance from wall and 60cms from roof shall be provided for storing the

Cement bags.

The stored cement bags shall be closed under tarpaulin in the godown.

The cement bags shall be placed on high platform and closed with tarpaulin in the site of work.

A minimum of 0.50 sqmt (5sqm.feet) shall be there for storing one ton (20 bags of cement)

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If the cement losses its strength it stored for more numbers of days as follows.

No of Days Stored Expected loss of strength

3 months 15 20 %

6 months 25 30 %

1 Year 35 40 %

2 Year More than 50 %

The cement shall be used within 90 days from the date of manufacture.

If not the cement shall be got tested again before using the same.

2. Quality of Coarse Aggregates

The Aggregate shall be clean. Not in contact with dust or Chemical. The strength of concrete shall

come down, if dust and soil is present.

Porous holes shall not be present. The observation of water shall not be more than 5% when

immersed for 24 hours in water.

Elongated and flaky jelly shall not be used for the works. If used there will be loss of strength and

requirement of more water.

The Jelly shall be graded.

There shall be different styles of stone aggregates to achieve maximum density.

The aggregates shall not too large (5% or more) or too small (10% or less) on size.

Angular and round shaped aggregates the good for RCC work.

The concrete losses strength if the presence of quantity of coarse aggregate is more than the desired

this also based on the mix of the concrete CCM10, 40mm downsize coarse aggregate shall be used

for foundation concrete and 20mm downsize graded coarse aggregate shall be used for coping RCC

and all other structure of the work.

3. Sand

The sand shall be free from clay and silt. If present it shall not exceed 5%.

Testing of Sand:

Fill the sand half full in glass jar. Add water mixed with salt.

Stir it using a steel rod. The silt particles move away from sand particles.

Clean sand remains the bottom of the jar. And turbid water on the top it the silt/clay present in

the sand.

The silt/clay deposits on the top of the sand slowly.

The sand shall be rejected if the quantity of silt is more than 5% and it shall be cleaned in

flowing water.

The sand should confirm the IS 2386.

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Water Required For Concrete

Purpose of Water The water helps all particles of cement to paste and bonds between the rest of the ingredients.

It reacts with cement and hardens the mix.

To bring workability to the and to place the mix easily.

There shall not be presence of oil, salt, sugar, vegetation and other objectionable material the

potable water is normally good.

Implementation and maintenance of Records

Obtaining O.K Card for the materials used for the work and for the finished product.

Recording the same.

Recording the measurements of work carried out in the measurement books.

Obtaining and recording the completion certificate of the work.

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Pr gZ AdAq, Construction Management Specialist, SMEC

P Pig, Engineer, Site and Design, SMEC

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Important works under GONDI COMMAND AREAImportant points to be observed during execution of each work.1. Removal of jungle2. Earth work excavation for foundation3. Improvement work of canal embankment4. Construction of rough stone revetment5. Cement concrete works6. Construction and repair of Tube(Structure)7. The outlet Construction8. Removal of Silt9. Method of taking the measurement of removal of silt from the canal.

Development works by the SocietyThe following work can be taken up by the maintenance society.Points to be observed while carrying out the canal development works.Types of methods of quality work.Strengthening of the Canal Embankment.The quantum of water in the soil (OMC)Cement works.Points to be observed while selection of materials1. Jelly2. Rough Stone3. Sand4. Water5. The soil used for Embankment.

Preparation of Good Quality Cement Concrete1. Neatly Storing of the Cement2. Quality of Coarse Aggregates3. Sand

Water Required For ConcretePurpose of Water

Implementation and maintenance of Records