Practical Summer Training Report FINAL

VIVEKANANDA INSTITUTE OF TECHNOLOGY (EAST) .

CIVIL ENGINEERING DEPARTMENT

A Practical Summer Training Report

On

Construction of Reactor Building at RAPP-78

In

HINDUSTAN CONSTRUCTION COMPANY LTD.

Submitted as a Partial fulfillment of the B.Tech program

In CIVIL ENGINEERING of

Rajasthan Technical University, Kota

SESSION 2011-12

SUBMITTED TO :- SUBMITTEDBY :-

Mr. NARIAN MEGHNANI AAYUSH AGARWAL

HEAD OF DEPT. CIVIL ENGINEERING B.TECH 4th

year(CIVIL)

____________________________________________________________________________________________________________________

VIVEKANANDA INSTITUTE OF TECHNOLOGY (EAST), JAIPUR



ACKNOWLEDGEMENT

I am extremely thankful to Mr. Binay Mishra (Project Manager HCC at RAPP-7&8) and all the

staff, site management of HINDUSTAN CONSTRUCTION CO. LTD. For my great knowledgeful

practical summer training at the RAPP-7&8 construction site, laboratory, and testing plant site

and also at office work formalities.

I am also greatful to Mr. J.K.Jain and other staff of RAPP as well as security guards etc. who

given the guidance and extend their support during my summer training

I am also thankful to Mr. Anil Pokra(CIVIL Engg.), GAMMON INDIA, KOTA who helped me to

complete my training successfully.

I am thankful to respected Principal sir Mr. M. Raisinghani, Ms. Latika Dhuria (Head Training &

Placement), Mr. Narian Meghnani (Head civil), Mr. Yuvraaj Singh (Head Training & Placement-

CIVIL )and other faculties and staff of college for their support and guidance.

I am also thankful to my mother and father who has encouraged from time to time for the

same.



PREFACE

Project give an opportunity to implement the principles and knowledge practically. The

experience that one gets wonderful because what one studies in books is different from what

one fact in the field.

A Project helps a student in getting acquainted with the manner in which his knowledge is

being practically used and this is normally different from what one has learnt from books.

Hence, when one switches from the process of learning to that of implementation his

knowledge, he finds an abrupt change. This is exactly why project during the B.Tech.

Curriculum becomes all the more important.

Imagine large drives used in Site, they are really effective and helpful. Also imagine of we

could control different machine and equipment at site or industry by using another device.

My training included these basic and some important engineering needs in an industry.

This report is detail describe of OVERVIEW OF HINDUSTAN CONSTRUCTION CO. LTD.



TABLE OF CONTENTS

S. No. PARTICULARS PAGE No.

1. Introduction About the Company

2. Introduction About the Project 3. Safety Training 4. Geology of Site 5. Blasting Process

6. Excavation Process 7. Drilling Process 8. Grouting Process

9. Test in Laboratory 10. Water Proofing 11. Survey during work 12. Reinforcement Work

13. Batching Plant 14. Crushing Plant 15. Sand Washing Plant 16. Conclusion



INTRODUCTION ABOUT THE COMPANY

The HINDUSTAN CONSTRUCTION COMPANY INDIA LTD. is the dignified and indeligible

company of India. This company was established in 27th Jan,1926 near MUMBAI with the

golden hand of WALCHAND HIRACHAND, son of cloth merchant in Sholapur,Maharashtra.

It was the first company in India to be certified for ISO 9001, ISO 14001, OHSAH 18001 for its

quality, environmental and occupational health and safety management systems. The

company is headed by Mr. Ajit Gulabchand, Chairman and Managing Director.

The HCC Family- In the HCC family there is big part of engineers comes not only

Civil Engineers but also Mechanical Engineers, Electrical Engineers and many

more….

In HCC Family there is

More than 3000 Office, 2000 Engineers, 35000 Employees and also

More than 21000 workers and many more investors are executed in the company.

In the RAPP-78 site there is more than about 115 employees are working.

The HINDUSTAN CONSTRUCTION CO. INDIA LTD. Is the ultimate company in field of

construction. This company relates with the Engineering, Construction, Realestate,

Infrastructure.

Annual Turnover of company in year 2010-11 is about ₹ 7000 carore.

http://en.wikipedia.org/wiki/Ajit_Gulabchand

http://en.wikipedia.org/wiki/Chairman

http://en.wikipedia.org/wiki/Managing_Director



Some major projects undertaken by HCC include:

Bandra-Worli Sea Link, Mumbai

Ennore Breakwaters, Tamil Nadu

Kudankulam Nuclear Power Plant, Tamilnadu

Rajasthan Atomic Power Station, Rajasthan

Mumbai Pune Expressway

Godavari Rail Bridge, Andhra Pradesh

Nathpa Jhakri Hydro-electric Project: Construction of head race tunnel and

surge shaft, with Impregilo SPA

Naini - Allahabad Bridge: One of the first cable-stayed bridges across

the River Yamuna, India, with Hyundai Engineering and Construction

Delhi Metro Project: Underground Metro Corridor with Kumagaigumi Co.

Limited, Japan, Skanska AB, Sweden, and Itochu Corporation, Japan,

East-West Road Corridor Project in Rajasthan, with M/s. Continental

Engineering Corporation, Taiwan

Lavasa hill city, Pune

300MW hydroelectric project in Uttarakhand, india.

AND MANY MORE…

http://en.wikipedia.org/wiki/Bandra-Worli_Sea_Link

http://en.wikipedia.org/wiki/Mumbai

http://en.wikipedia.org/wiki/Ennore

http://en.wikipedia.org/wiki/Tamil_Nadu

http://en.wikipedia.org/wiki/Kudankulam_Nuclear_Power_Plant

http://en.wikipedia.org/wiki/Tamilnadu

http://en.wikipedia.org/wiki/Rajasthan_Atomic_Power_Station

http://en.wikipedia.org/wiki/Rajasthan

http://en.wikipedia.org/wiki/Mumbai_Pune_Expressway

http://en.wikipedia.org/wiki/Godavari_Rail_Bridge

http://en.wikipedia.org/wiki/Andhra_Pradesh

http://en.wikipedia.org/wiki/Satluj_Jal_Vidyut_Nigam

http://en.wikipedia.org/wiki/Impregilo

http://en.wikipedia.org/wiki/Naini

http://en.wikipedia.org/wiki/Allahabad

http://en.wikipedia.org/wiki/Cable-stayed_bridge

http://en.wikipedia.org/wiki/River_Yamuna

http://en.wikipedia.org/wiki/India

http://en.wikipedia.org/wiki/Hyundai_Engineering_and_Construction

http://en.wikipedia.org/wiki/Delhi_Metro

http://en.wikipedia.org/wiki/Skanska

http://en.wikipedia.org/wiki/Itochu_Corporation

http://en.wikipedia.org/wiki/Japan

http://en.wikipedia.org/wiki/Rajasthan

http://en.wikipedia.org/wiki/Lavasa

http://en.wikipedia.org/wiki/Pune



ABOUT THE PROJECT-

In RAPP-78, two units of 1400 megawatt, Unit-7&8 construction was started from

year 2010.

₹ 12000 carore has been invested in construction of unit-78.

This is the 25th unit of country and 7th and 8th unit of RAJASTHAN.

Till 2016, energy will be produced in the unit.

The capacity of RAPP will increased till 2580 megawatt.

700 megawatt power is for Rajasthan and 1400 megawatt power for north

power grid.

Many more…



Safety Training In safety training safety instructor tell us of use of safety equipment at construction site.

CUSTOM HARD

HATS

SAFETY VESTS

WORK

GLOVES

FALL PROTECTION SAFETY GLASSES SAFETY SHOES

http://www.aeccommunitestore.com/bs_departments.html?did=1616&MenuID=161917&Link=161918
































Geology of Site The rock is predominantly Quartzite sand stone generally hard and compact with

interbedded shale seams and clay strain. The site investigation of the foundation

rock carried out by drilling and coring has sand stone to a depth of over 6m and

drilling core in rock upto of 3m below ground surface.

NPCIL awarded the construction of nuclear plant 7&8 at RAPP, to HCC. As part of

this work, about 15lakh cubic meter of hard rock has to be excavated by drilling

and blasting method for site grading and foundation excavation. The excavation

site is located close to operating nuclear plant.



Blasting

Blast Details-

Size of Blast-115mm diameter.

Drilling Machine- IR Crawler/ Tire mounted.

Burden- About 2.0m to 3.0m. (... Burden<Spacing)

Spacing-About 2.5m to 3.5 m.

No. of Holes- 8 to 61.

Depth-3m to 9m.

Explosive-Raj blast (83mm dia, 2.78Kg Booster and 450mm long)

Charge per hole-11Kg to 61Kg depending on depth of hole.

Peak particle velocity,

V=k (D/Q½)b

V= Peak particle velocity (mm/sec.)

D=radial distance from blast monitoring station (m)

Q=max. Charge per delay (Kg.)

K and b=site constant



Explosion Used-

Detonator and Fuse Wire

In under water excavation an electric detonator shall be used.

In dry weather and normal dry excavation, ordinary low explosive black powder

(Gun Powder) in granular form may be used. Granular black blasting powder in

small charges (as in hole 1500mm to 1650mm deep, and 30 to 40mm dia.). As

per use the size of hole increased about 150mm.



Excavation

Excavation- Excavation carried out in two stages-

1- Excavation comprising of area.

2- Excavation are completed and accepted by engineer.

Companies working in excavation at Reactor Building site-

1- SIBY

1000cum/8hr.

2- MCC

550 cum/8hr.

3- KCPL

1000 cum/8hr.



Drilling

Scope of Drilling-

1. Erection of rotary drilling rigs at required location.

2. Collection of soil and rock samples.

3. Testing of rock and soil sample.

4. Storage of core in boxes.

5. Preparation of report.

Purpose of Drilling-

1. To find geological information.

2. Description of extent and nature of sub-surface material.

3. Soil/Rock characteristics.

4. Depth of ground water table.



Equipment Required-

1. Total Station

2. Auto Level

3. Rotary Drilling Rigs (Vol. 90, Long layer, KLR tractor, Mounted Hydraulic

drilling rig).

4. Tripod set with pulley.

5. Drilling rod.

6. “Double Barrel Core Tube” of 1.5m and 3.0m length.

7. Starting barrel of 200mm-500mm length.

8. Triplex/Water Pump.

9. Measuring Tape (3m and 30m).

10. Pressure gauge.

Procedure-

1. Survey of area. Survey for Borehole drilling.

2. Drilling in overburden soil-

a) Machine set up at borehole location.

b) Borehole drilling by hydraulic rotary drilling rig of 100mm

dia.

c) Temporary casing will be provided to support of the

borehole, when drilled through loose, very soft soil to avoid

collapse of borehole.

3. Rotary drilling in rock-

a) Method.

b) Drill rod and core barrels

c) Drilling Fluid-Clean potable water

d) Type of Bit-Diamond tipped core bit

e) Drilling Run-Not exceed 3m in length.

f) Observation during drilling-The speed at different

depth will be carefully recorded during drilling.

4. Plugging of bore hole-Using Cement and Sand grout ratio (1:2).



Precautions-

1) To prevent surface water into pit.

2) Warning signboard and safety barricade provided.

3) Powder connection will be protected.

4) Grouting.



Grouting Consalidation Grouting is the process of filling the cracks.

Holes in Grouting- There are two types of holes

i. Primary Hole

ii. Secondary Hole

iii. Tertiary Hole

Pattern of Primary Hole at 6m distance from one hole to another hole.

Small holes are Secondary Hole at 3m distance from big hole to small hole.

Cold Drilling- 100m depth.

Instruments Used in Grouting-

i. Grouting Pump

ii. Pressure Gauge

iii. Water Meter

iv. Rubber Packer (Diameter of rubber=110mm.)

v. Agitator

vi. Mixing Drum.

Applied Pressure- At 0m to 3m height=1Kg/m3

At 3m to 9m height=2.5Kg/m3

Plugging-It is the process to fill the hole with sand and cement in ratio of (1:2).

Grout Mix- Grout Mix is the mix of sand and cement in ratio of

(1:2,1:15,1:10,1:5,1:.05,etc.).

NOTE- “ Before Grouting, it is mondatry to find out the Lussion Value by conducting the Perculation Test, based

on L.V. the Grout Mix can be decided.



Q. Why Grouting is done?

Ans. To consolidate underground rock surface. In underground rock surface there

may be different type of cracks and faults. Which causes sub surface flow of

water. To fill up these cracks “Grouting” is carried out.

Purpose of Grouting-

To fill up the sub surface voids in between rock layers. If it is not done

seepage of water continue which will cause the damage of water proofing surface

as well as planter reinforcement.

Procedure of Grouting-

1. Primary Holes-

a) Spacing of holes- 6m c/c.

b) Depth of holes- 9m(from existing ground level)

c) 1st Stage- 1] Perculation from 3 to 9m depth.

2] Perculation from 0 to 3m depth.

d) 2nd Stage- 1] If there cracks or voids or faults is there a certain

loosen value will be find.

2] Grout the hole from 3 to 9m depth as required corresponding to loosen value.

3] When computed plug the hole from 3 to 9m.

4] Now process the perculation from 0 to 3m depth.

5] Grout and plug the hole as loosen value obtain.

e) Grout and plug all the primary holes.



2. Then go for Secondary Holes- The secondary hole will be in between

primary holes. The grouting and pluging will be same as primary holes.

3. If loosen value is there in secondary holes we have to proceed for

tertiary holes.



TESTS IN LABORATORY

Introduction of Concrete testing lab-

1. Compression Testing Machine(CTM)

2. Flexural Test of Concrete for Beam

3. Soundness Test of Cement(Expansion of Cement, ”Le Chatteres

Principal”)

4. Aggregate Abrasion Test

5. Workability or Slump test on Concrete

6. Air Content Test on Concrete

7. Flakielongation Test

8. Sieve analysis of coarse aggregate

9. Sieve analysis of fine aggregate

10. Sand present in aggregate



CONCRETE TESTING LAB

Experiment-1

Compression Testing Machine

USE- Compressive strength test on concrete remove before 24hrs. Whenever

cube is coated.

NOTE:- Load in UTM=140 Kg/cm2.

Size of Cube Mould=15x15x15 cm.

PROCEDURE-

1. Remove the specimen from curing tank.

2. Place the specimen in Compression Testing Machine (CTM), Capacity-

3000KN.

3. Place the cube so that caste face shall not be at top or bottom.

4. In case so that cast face shall not be capped using Sulphur Capping.

“Sulphur Capping is for the finishing of cube layer.”

5. Align the axis of specimen with center of thrust of spherically seated platen

6. Apply the load till specimen break or crack.

7. Record the max load applied.

8. Calculate compressive strength.

Compressive Strength = Load/Area.

Unit-N/mm2

Note- Taping bar is used for cube is 25 times and 35 times.

TAPING BAR- 16mm Diameter & 700mm Long




Experiment-2

Flexural Test of Concrete for Beam

1. Specimen shall be 700x150x150mm concrete beam.

2. Specimen shall be cured by submerging in clean water upto time of

testing.

3. Bearing surface of the supporting and loading rollers shall be wiped clean,

any loose sand or other material removed from surface of specimen.

4. The specimen shall be wiped clean, any loose sand or other material

removed from the surface of specimen.

5. The specimen shall then be placed in the machine in such a manner that

the load shall be applied to uppermost surface as caste in mould, along

two lines spaced 200mm apart. The axis of specimen shall be carefully

aligned with axis of loading device.

6. The fiber stresses increases at application 7Kg/sq./min that is at the rate of

loading 4KN/min for the 150 mm specimen.

7. The load shall be increased until the specimen fails, and the maximum load

applied during the test.

The flexural strength of specimen shall be expressed as modulus of rupture fb.

fb = Pl/bd2

P=Load (N), l=Length of specimen (mm), b=width of specimen (mm), d=depth of

specimen (mm).




Experiment-3

Soundness test of Cement (Expansion of cement)

Initial reading Final reading

(Specific Gravity of Cement)-

Le-Chatelier flask-Standard Le-Chatelier flask conforming to IS 4301, shall be used.

Analytical balance-Electronic balance of accuracy (± 0.1g) shall be used.

Procedure-

1. Kerosene, free of water having a specific gravity not less than 0.731 shall be

used in specific gravity determination.

2. The flask shall be filled with kerosene to a point on the stem between the 0

and 1-ml mark.

3. Inside the flask above the level of the liquid shall be dried.

4. First reading shall be recorded.

5. A weighted quantity of cement (about 65g for Portland cement) shall then

be introduced in small amount at the same temp. as the liquid.

6. Care shall be taken to avoid splashing and has been introduced, the stopper

has been introduced.

7. The stopper shall be placed in the flask and the flask rolled in inclined

position or gently whirled in the horizontal circle, so as to free the cement

from air until no further air bubbles rise to surface of the liquid.

8. If proper amount of cement has been added the level of liquid will be in its

final position at some point of upper series of graduations.

9. The final reading shall be taken.



10. The flask shall be kept in constant temperature room for sufficient interval

before making either of the reading so as to avoid variation greater than

0.2°C in temperature of the liquid in the flask.

11. The difference between the first and final reading represent the volume of

liquid displace by the mass of cement used in test.

The Specific Gravity shall be calculated as-

Mass of cement in (gms) = --------------------------------

Displaced volume in cm3




Experiment-4

Workability/Slump test on cement

1. Collect the sample on non absorbent metal plate or tray and mix it

thoroughly.

2. Clean the internal surface of cone slump.

3. Fix the cone firmly to its base plate with help of clamping screw and place it

at horizontal surface.

4. Fill the mould with concrete sample in four layers each layer approximately

¼ cone height.

5. Compact each layer with 25 strokes by tamping rod.

6. Release the clamping screw and lift the cone slowly and carefully in vertical

direction from the concrete.

7. Place the cone inverted at the side of concrete.

8. Measure the difference of height between top of cone top of plastic

concrete.

9. Record the value as slump of concrete in mm.




Experiment-5

Air Content test on Concrete

1. Collect the sample on nonabsorbent metal plate and mix it thoroughly.

2. Fill the container in three equal layers and compact each layer with 25

strokes by tamping rod.

3. Close main air valve of air receive of top LID open both the pet clocks of top

LID.

4. Place LID on container and close the four toggle clamp.

5. Pour water into funnel until water comes out of petcock.

6. Close both the petcock and air bleeder valve.

7. Gently pump air into receiver until gauge needle comes in line marked on

gauge.

8. Top gauge gently and open main air valve.

9. Allow the needle to come to rest and take the reading.

10. Report this reading is present of air entered in concrete.




Experiment-6

Aggregate Abrasion Test

The test sample shall consist of clean aggregate which has been dried in an oven

at 105°C to 110°C to substantially constant weight and shall confirm to one of the

grading shown.

Table: 1- Grading of test sample

Sieve Size (Square Hole) Weight in gm. Of Test Sample for Grade

Passing Retained on

A B C D E F G

80 63 - - - - 2500* - - 63 50 - - - - 2500* - -

50 40 - - - - 5000* 5000* - 40 25 1250 - - - - 5000 5000

25 20 1250 - - - - - 5000*

20 12.5 1250 2500 - - - - - 12.5 10 1250 2500 - - - - -

10 6.3 - - 2500 - - - - 6.3 4.75 - - 2500 - - - -

4.75 2.36 - - - 5000 - - -



Table: 2- No. of Abrasive Charges

Grading No. of Spheres Wt. of Charges gms.

A 12 5000±25 B 11 4584±25

C 8 3330±20

D 6 2500±15 E 12 5000±25

F 12 5000±25 G 12 5000±25

For grading A,B,C,D the machine shall be rotated for 500 revolution.

For grading E,F,G it revolve 100 revolutions. After completion test the machine

shall be discharge and sample passes through 1.10 mm sieve. The finger portion

shall than be sieved on a 1.70mm IS sieve sample.

The ratio of the weight of fine formed the total sample weight is expressed in %

for each test.

Aggregate Abrasion Value = (B/A)*100

B = Weight fraction 1.7mm IS Sieve.

A = Weight of oven dried sample.




Experiment-7

Flakieness of Aggregate Test

1. Take aggregate sample, so that minimum no. of 200 pieces of each fraction

is available.

2.

40 mm down aggregate-50Kg.

20 mm down aggregate-20Kg.

3. Sieve the sample on IS sieve 40, 31.5, 25, 20, 16, 12.5, 10, 6.3 mm.

4. Calculate % retain on each sieve.

5. Count aggregate retain on each sieve as (Ni).

6. Gauge each fraction for thickness on the standard metal thickness gauge.

7. Aggregate passing the gauge for each fraction shall be separately counted

(N1i).

Calculate Flakiness index (F.I.) = (Σ N1i / Σ Ni)*C3i (%)




Experiment-8

Sieve Analysis of Coarse Aggregate

1. Prepare sample using sample divider for different of aggregate as per table

below-

Max. Size of Aggregate(mm)

Min. Wt. of Sample(Kg.) Min. Wt. of Sieve Analysis(Kg.)

40 50 20

20 25 12

10 6 3

2. Make the sample dry by heating at 100 to 110°C.

3. Take the weight of sample and sieve it successfully on following sieve-

50mm, 40mm, 20mm, 10mm, and 4.75mm.

4. Shake each sieve separately until not more than a trace passes but not less

than 2 min.

5. Take weight of material retained on each sieve.

6. Calculate % retained, and cumulative % retained on each sieve.

7. Calculate corresponding % passing.

%retained = (Wt. of retained on sieve/Total Wt. of sample)*100




Experiment-9

Sieve Analysis of Fine Aggregate

1. Sieve Analysis of Fine Aggregate

Max. Size of aggregate(mm)

Min. Wt. of Sample(Kg) Min. Wt. of Sieve Analysis(Kg)

10 6 3 4.75 3 1

Following using Sieve-

4.75mm, 2.36mm, 1.18mm, 600micron, 300micron, 150micron.

2. Make the sample dry by heating at 100 to 110°C.

3. Take the weight of sample and sieve it successfully on following sieve-

50mm, 40mm, 20mm, 10mm, and 4.75mm.

4. Shake each sieve separately until not more than a trace passes but not less

than 2 min.

5. Take weight of material retained on each sieve.

6. Calculate % retained, and cumulative % retained on each sieve.

7. Calculate corresponding % passing.

%retained = (Wt. of retained on sieve/Total Wt. of sample)*100

NOTE: - Sieve shaker with 20 & 45 cm. frame.




Experiment-10

Sand Present in Aggregate



Water Proofing

Water Proofing in Horizontal Surface-

a. 20 mm. thick leveling coarse(Screed) of 1 part of cement,4 part of sand

by volume with “SIKA Latex” , Water/Cement ratio should be 0.5.

b. 1st coat of” Acrylic Polymer”.

c. 1st layer of fiber glass cloth reinforcement o.2mm thick.

d. Repeat process for 5 layer of Acrylic Polymer” material sandwich with 4

layer of fiber glass.

e. Total thickness of water proofing shall be 3 to 4 mm.

f. Completion of final layer of water proofing and a gap of manufacturer

before application of 20mm thick protective layer of 1:4 cement and

sand ratio by volume with chicken mesh wire.

g. 7 days curing after plaster.

Water Proofing in Vertical Surface-

a. Concrete surface will be clear with wire brush to remove laitance of

cement mortar, fungi, algae, oil substance.

b. 1st coat of acrylic polymer.

c. 1st layer of fiber glass coat reinforcement 0.2 mm thickness.

d. Repeat five layer of acrylic cementious material sandwich with four

layer of fiber glass.

e. Total thickness of waterproofing membrane shall be 3 to 4 mm.

f. Before 115mm brick wall sufficient curing shall be done.

g. 115mm protective brick wall with cement mortar 1:6 will be build

outside the RC wall/raft.

h. Curing shall be 7 days minimum.



SURVEYING DURING

WORK

1- Auto Level

2- Total Station



1-AUTO LEVEL

Apparatus Used- Tripod, Auto-level, Prism, Shaft, Measuring Tap etc.

Procedure- for Temporary arrangement

1) Set the tripod in level (3legs are level and equal).

2) Set auto level on tripod.

3) Set bubble in center.

4) Read the reading in cross hair level.

Observation Table for Calculation-

Synod. B.S. I.S. F.S. H.I. R.L.

B.S.-Back Sight

I.S.-Intermediate Sight

F.S.-Fore Sight

H.I.-Height of Instrument

R.L.-Reduced Level

Formulae- H.I. = R.L. + B.S. R.L = I.S. – H.I.

F.S. = H.I. – R.L. of staff in fore direction



2-TOTAL STATION

APPLICATION OF TOTAL STATION-



Reinforcement Work



Material- HYSD bar and TMT bar Fe 500 to IS 1786.

In Fe 500 steel elongation not more than 14.5% ultimate tensile strength of

bar 15% more than actual 0.2% proof stress/yield stress.

Storage-Reinforcement steel shall not keep direct contact with ground; it is

kept on timber sleepers or concrete pedestal.

Bending of Reinforcement-The reinforcement bar shall be cold bent at

appropriate radius of minimum 6D using “Bar Bending Machine” with

proper mandrill. Load shall be applied gradually on bar.

Lying of Reinforcement- The bars are placed as according to reinforcement

diagram. Chair/ Spacer made up of reinforcement steel bar shall be

provided to keep the bars in position.

The radius of bent is less than 6 times the diameter for HYSD TMT bars.

Reinforcement shall be tied with each other 16 gauge

where the spacing of re-bars is greater than 300mm both ways. If spacing

of the bars is less than 300mm, only alternate joint shall be tied both ways.

Spacing- R*Ø

36 mm Ø bar is used for reinforcement of grade Fe 500 in construction of

Reactor Building.

Q. Why we use Fe 500 bar, not use Fe 415 bar in construction of Reactor Building? Ans. Because the strength of Fe500 is more than Fe 415 bar.



Types of Bars used in construction of Reactor Building:-

S.No. Name of Bar Diameter of Bar

Shape of Bar Type of Bar

1.

Straight Bar 8mm

TMT Fe 500

2. Straight Bar 10mm

TMT Fe 500


TMT Fe 500


TMT Fe 500


TMT Fe 500


TMT Fe 500

7. Chair Bar 36mm

TMT Fe 500

8. Lap Bar

36mm TMT Fe 500

9. Radial Bar

32mm TMT Fe 500



Bending of Bars-

Stirrup and Links used in bars-



Tying of Reinforcement-









BATCHING PLANT

Capacity of Batching Plant- 120m3/ hr.

Aggregate Store-40m3

Admixture Concrete- Cement+Additive+Water+Ice+Aggregate

Storage Bin-

1. 10mm aggregate

2. 20mm aggregate

3. Sand-20mm aggregate(Crush Sand and Natural Sand both)

Aggregate wear load cell (Capacity)- 5000 Kg/load*104

Conveyer- Feed the material in in bins.

Mixer- Mixer is used to mix the mixer (Flyash+Cement+Aggregate+Sand)

Capacity of mixer batch-3m3



Cylo- Cylo is used for the fly ash.

Capacity-200 ton. Total 12 Cyno is used in HCC.

Ice Plant-20 ton

Temperature in Ice Maker- (-30°C to -33°C)

Storage Container- 100 ton.

Maximum capacity of Plant- 60m3.

Maximum batch capacity-1.25m3

Transit Mixer-Concrete is being transport to by transit mixer of 600m3 capacity.

We take 15 days calibration.

Ammonia(NH3) is used for condensing the ice.

Ice maker consist of-

a. Vapor compression System.

b. Receiver

c. Compressor

d. Condenser

e. Ice cutting motor

In RCC use N45 concrete.

In PCC also use N45 concrete.



CRUSHING PLANT

Crushing of stones in machine as per requirement of size of aggregate.

BC-1 Jaw Crusher- To crush 82-100mm size bolders.

BC-2 Chock Pile- Hydrocone Crusher- 10, 20, 40mm size

aggregate.

BC-6 Screen-1 for greater than 40mm size aggregate.

BC-7 VSI Hopper(Vertical Shaft Impector) is used for stock the

aggregate.

BC-8 VSI Crusher(Vertical Shaft Impector) is used for plane the

aggregate.

Screen-2 for 40,20,10,4.75mm size aggregate.



SAND WASHING PLANT Process of washing sand in plant:-

Convey the Sand with Conveyer to plant

|

4.75mm Sieve

|

Wash the river Sand

|

Screen the Aggregates

|

Sand Water

|

Screen Washer

|

Aggregate Sand

|

Use in Concrete



CONCLUSION

On concluding the training report , I would like to say that I got a good

overview of HINDUSTAN CONSTRUCTION CO. LTD. I learn about the

practical knowledge at site. I learnt about many instrument at the site. I

think this training will come good in future use. Apart from my area of

project I also got an idea that “ How to do work at construction site”,

which is important in my future.

Practical Summer Training Report FINAL

Documents

civil engineering b

construction site

safety training

narian meghnani head

important engineering

testing plant site

staff of rapp

geology of site