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A Report on
Summer TrainingIn
A new city taking its root
NAYA RAIPUR
By:
ABHISHEK SHARMA
Enrol No. A2315808027
Class: 7 CE 1
Course : B.Tech (Civil)
Batch: 20 08-12
Amity School of Engineering and Technology
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ACKNOWLEDGEMENT
At the very outset, I would like to express my deepest gratitude to Mrs N B
MISHRA, lecturer, civil department, Amity University for the encouragement and
guidelines for this field study. I take this opportunity to express my gratitude to the
people who have been instrumental in the successful completion of the project.
I would like to show my greatest thankfulness by heart to honourable Shri
S.S. Bajaj, IFS, CEO NRDA, Shri S.R. Sriwastava Chief Engineer NRDA, Shri V.K.
Ratre Executive Engineer NRDA, & Shri S.K. Nag Consultant Engineer NRDA,, who
gave me the opportunity for field experience and guided me as and when required.
I cant say thank you enough for their tremendous support and help. Without their
encouragement and guidelines this project would not have materialized.
The guidance and support received from the members of the site including
Mr Satwant Singh (guide), Mr Shrinivas (engineer), Mr Rajesh kuril (Engineer)
Mr Kamlesh kr Tiwari (surveyor), & Mr Shabhu Rao (Civil Foreman) who
contributed there precious time to this project, was vital for the success of the
project. I am grateful for their constant support and help.
Last but not the least I am also thankful to all those who have directly or
indirectly rendered help in completion of the Field study.
ABHISHEK SHARMA
Enrol No. A2315808027
Class: 7 CE 1
Course : B.Tech (Civil)
Batch: 20 08-12
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CONTENT
S.No. Title Page No.
1 Chapter-I A New City Taking its Root (Naya Raipur) 4-9
1.1 A New City Taking its Root (Naya Raipur) 4-5
1.2 Mission and Vision ( Naya Raipur ) 5
1.3 Vision for Development ( Naya Raipur ) 5
1.4 Location & Land use Plan 6-7
1.5 Major Component 7-8
1.6 Special Features 8-9
1.7 Phases of Development 9
2 Chapter II Study & Training on Running Components 10-46
2.1 Construction OF Road 10-20A Procedures 12-17
B Study of Different Cross Section Maps 17-20
2.2 Capitol Complex 21-39
A Concrete Block 22
B Artificial Lake 22-23
C Lobby 24
D Slab 25
E Shuttering in Canopy 26
F Canopy for Lobby 1 27
G Lobby 3 28H Lobby4 28
I Water Harvesting System 29-32
J Slab in Mantralaya 33
K Column 34
L Beam 34
M Thermal Energy Storage System 35-36
N Air Handling Unit 36
O Screen Wall 37
P Pargola 38
Q Minister Block 39
2.3 Water Supply System 40-46
A Raw water pumping 40
B MS Pipe 41
C Intake Well 42
D Master Balancing Reservoir 43
E Schematic layout of Water Treatment Plant 44
F The Water Treatment Process 45
G Construction of Clariflocculator 46
3 Reference 47
4 Industry guide 48
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CHAPTER I
A NEW CITY TAKING ITS ROOT
(Naya Raipur)
After formation of new state Chhattisgarh in the year 2000, the state
government has decided to create a well planned new city for Raipur. Hence Special
area has been notified under section 64 of Nagar Tatha Gramnivesh Adhiniyam
1973. The authority thus formed is named Capital Area Development Authority
(CADA) which is now called as Naya Raipur Development Authority(NRDA). NRDA
is the nodal agency undertaking comprehensive development of this Greenfield City.
Naya Raipur Development Authority (NRDA) is a special area development
authority established by GoCG under the Chhattisgarh Nagar Tatha Gram Nivesh
Adhiniyam, 1973 for development and administration of Naya Raipur. The authority
has Chairman, CEO and other members. Chief Executive officers appointed by
government and other officers and staff working under NRDA organization.
As part of development activities, NRDA is developing and shall develop
infrastructure, utility and social projects by various procurement methods such asPublic Private Partnership framework, Engineering procurement contracts Percent
Rate/ Item Rate/ lump sum contract etc, depending on the nature of projects
Naya Raipur has been included in the Jawahar Lal Nehru Urban Renewal
Mission (JnNURM) as a Mission City with the city of Raipur. The City Development
Plan (CDP) of Naya Raipur has been approved for Rs 749.52 crores. As a
mandatory requirement of JnNURM, NRDA has agreed to implement Urban Reform
Agenda set out in the "Checklist of the Urban Reforms" under JnNURM within the
mission period. The implementation of urban reforms require drafting of policy
frameworks, rules, bye laws, manuals, guidelines etc and preparation of GIS/IT
databases for various reforms and their implementation. The guidelines of JnNURM
require submission of progress Reports and other documents related to the
implementation of projects and Urban Reforms at given intervals.
Naya Raipur has also been selected as a demonstration city under the Global
Environmental Facility (GEF)/ World Bank assisted Sustainable Urban Transport
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Project (SUTP) being implemented by Government of India. The DPR submitted to
the Government of India is expected to be approved soon. The project is required to
be implemented in compliance with the Finance Management Manual and
Operations Manual of SUTP.
MISION AND VISION ( Naya Raipur )
'NAYA RAIPUR' would at once serve as the Administrative Capital of the
State and also cater to the infrastructural needs of industry and trade in the
region.
"NAYA RAIPUR is envisioned to serve as an engine of growth for the state of
Chhattisgarh. It will be a magnet for the investments into the state"
NAYA RAIPUR with high quality of its infrastructure, economic, social, cultural
and technical, would ensure high quality of life for its citizens.
'NAYA RAIPUR' will become a model and a source of inspiration for city
planners, architects, builders and policy makers anywhere in the world.
VISION FOR DEVELOPMENT ( Naya Raipur )
'NAYA RAIPUR' would be a 'green city' in every sense of the term. Large
areas would be brought under tree plantation - Arrangements for water
conservation and waste water recycling - Use of non-conventional energyresources to the maximum.
'NAYA RAIPUR' would reflect the rich heritage and culture of Chhattisgarh
and India, in its urban design and architecture. Special efforts would be taken
to make it a people friendly and visitor friendly city.
City design would promote sense of security and comfort among its citizens,
especially women, children and the physically challenged.
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LOCATION & LAND USE PLAN
Naya Raipur is the upcoming Capital of Chhattisgarh being built at 17 km
aerial distance in the South-East direction from the existing capital Raipur. 'Naya
Raipur' would at once serve as the administrative capital of the State and also caterto the infrastructural needs of industry and trade in the region.
The new city is about 8 km from Raipur Mana Airport and is in between two
national highwaysNH6 and NH 43. Naya Raipur spreads over an area of about
8000 hectares. It includes 41 villages out of which 27 villages form the core of the
Naya Raipur. The population of just 1 village i.e. Rakhi is getting displaced in the
development of Naya Raipur. About half of the total acquired land is being used for
afforestation, roads, parks, public conveniences, water facilities-canals, green belts
etc. 23 percent of the land is reserved for educational institutions, government officesand public auditoriums etc. 30 percent of the land will be used for residential and
commercial purposes.
The land use plan is as under;
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Naya Raipur would be fourth planned capital city
after Gandhinagar, Chandigarh and Bhubaneshwar. Out of 8000 ha. Green area
location within city limits in different forms is planned as given below;
The project is likely to cost anywhere between Rs 1,500 and 2,000 crore. The
city is expected to house about 4.5 lakh people within a decade and provisions, in
the form of future infrastructure upgradation, have been made for its expansion.
MAJOR COMPONENT
Capital Complex to serve as Administrative capital of Chhattisgarh.
New Mantralaya (State Secretariat) and Offices of Heads of Department to
come up in the Capital Complex.
Residential Colonies (A Township having 2600 housing units is being
developed by Chhattisgarh Housing Board, near Capital Complex at sector 27
on 62 Ha. of land. Institutional Area.
Gems & Jewellery Park.
Sports Complex.
Central Business district.
Logistics Hub.
Software Technology Park.
Park for light Industry. City Park.
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Raj Bhawan and residences of Ministers to come up in the second phase
close to the Capital complex.
The State Vidhan Sabha (Legislative Assembly) to come up in the capital
complex in the second phase
The development of the city is going on, following map shows Completed
Projects in Green Colour, Running Projects in Blue Colour and Red Colour denotes
projects in pipe line.
SPECIAL FEATURES
Rehabilitation policy is evolved by active participation of all Stake Holders.
Private Land are being purchased on mutual consent basis at fixed price.
Green belt, 500 m wide around the Naya Raipur.
A lot of green spaces inside the city more than 2500 hectares.
No overhead wires, underground electricity & Tele-communication network is
planned.
Vibrant public places and strong cultural institutions set amidst landscaped
greens.
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Administrative capital of Chhattisgarh and seat of State administration
buildings - the Secretariat, Police Headquarters, Legislative Assembly, Raj
Bhawan and Offices of heads of departments, to come up in the city.
Cultural centre of Chhattisgarh with museums, libraries, theatres and art
galleries.
Knowledge center of Chhattisgarh with university, research and institutional
complexes.
World class amenities including Star Hotels, 18-hole Golf Course, Theme
Township, Convention Centre, IT SEZ, Shopping Malls and Multiplexes.
PHASES OF DEVELOPMENT
Naya Raipur city is designed for 5.6 Lakh population, is proposed to be
developed in 3 phases.
Phase I Target Population = 1.50 lacs
Phase II - Target Population = 3.65 lacs
Phase III - Target Population = 5.60 lacs
The development of any region is directly related to its power requirement andthe quality of infrastructure to support it. The estimated power requirement of entire
Naya Raipur is of 250 MW. Implementation and development of power supply
system would be done as under;
Power up to 132 KV voltage level will be taken through overhead system & up
to 33 KV voltage would be taken through underground system. The cables will be
taken through underground Pucca trench ( Duct ). To ensure minimum interruption of
power supply, the underground system of 33 & 11 KV will be connected is ring main.
All 33/11 KV substation be establish would be indoor type. The SCADA (Supervisory
Control and Date Acquisition) is going to be introducing up to distribution transformer
to have online monitoring and control of power supply. In street lighting system latest
technologies i.e. T-5, LED's (light emitting diodes) instead of sodium vapours lamps
is used. There is proposal for solar lighting system for SSB building by installation of
solar panel's on roof of capital complex building except secretariat building. For
street light it is decided to use solar energy for which a solar power plant is going to
be establish at Kuhera.
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CHAPTER II
STUDY
&
TRAINING ON RUNNING COMPONENTS
The Naya Raipur Development Authority ( NRDA) has given us a Schedule of
Training Programme. Engineer in Chief oriented us on the whole project at his office
and guided, taught and interacted with us at site during his official visit to site and
components of the project running. There are batches of 10 students under the
supervision and guidance of at least an Executive Engineer preferably the In-charge
of the Project.
Apart from the government official we are able to interact, learn from
contractor side Project Manager and Site Engineer. There is an extended technical
arm of NRDA in the name of PMC ( Project Management Consultant ). This agency
manages the whole project and keeps surveillance on the quality and quantity
applied in the project in the form of Men, Machines and Material. The Team Leader
from PMCs and their resident engineer also enlightened technically and explained in
details all the works running in their command and control.
Following running components of City Development is studied by me and
visited the site to learn, how work is being done practically on the site conditions and
its relation with the drawing and bill of quantity ( BOQ) .
2.1 CONSTRUCTION OF ROAD
Construction of all major roads of the city is almost complete and finishing
work is going on. We studied the following map and related the components/items
given in the map with completed work on the site.
1. Road Net work of the city
Roads are designed to ensure free flow of traffic with speed, safety and
smoothness. The care is taken to avoid traffic bottlenecks, congestions, vehicle
pollution and accidents during the road design.
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Total Length of proposed roads: 225 km.
Construction work on 71 km of road has been started (100m and 60m ROW)
Construction Agency: M/s B. Seenaiah & Company(Projects) Limited, Hyderabad
Project Management Consultancy: M/s Sheldia Associates Inc., USA.
Architectural Consultants: M/s.Comfort Designers, Hyderabad
LAYERS
A) EmbankmentB) Sub Grade Depth 500 mmC) Granular Sub Grade Depth 200 mmD) Wet Mix Macadam layer I Depth 125 mmE) Wet Mix Macadam layer II Depth 125 mmF) Dense Bitumen Macadam Depth 70 mm (minimum) 200
mm(maximum)
G) Bitumen Macadam Depth 40 mm
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PROCEDURE
1) Cleaning and Grabbing of the surface with in the R O W(Right Of Way)
2) Mark other ground level (OGL). Karachi is marked as a sea level.
3) Laying of Embankment( +20,-25)
4) Above the Embankment Sub Grade are laid in three layers of depth 200mm ,
150mm, 150mm. The max depth is 200mm because above this the layer is
difficult to compact.(+20,-25).
5) Layer of Granular Sub Grade is laid above it of depth 200mm.(+10,-20).
6) Now lay the WMM in 2 layer of depth 125mm each.(+10,-10).
7) Dense Bitumen Macadam is laid above WMM of depth 70mm(+6,-6).
8) The top most layer is Bitumen Macadam of depth 40mm.(+6,-6).
It is required to leave the offset on laying the different layers so that it will be
easy in compaction with roller and it will not crack.
The different dia steel bar are used in this project for the bridges are as under:
Weight of Steel Bar per meter = {(diameter)2/ 162}, wait of the different
diameter steel bar are;
i) 6mm steel 0 .22 kgii) 7 mm round coil 0.30kgiii) 8mm coil 0.39 kgiv) 10mm steel 0.62 kgv) 12 mm 0.89 kgvi) 16mm 1.58kgvii) 20mm 2.46 kgviii) 25mm 3.85kgix) 32mm 4.83kg
x) 16 mm round 1.58 kgxi) 20 mm round 2.46 kg
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Two types of Cement i.e. Ppc and Opc are used.
Following Admixture are used;
TE 101 6h27 SP500
Pipe: RCC home pipes 1200 dia and 300 dia concrete grade are used.
Following drawings studied and learnt to interpret them.
A: Typical cross section
B: Bus bay
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C: Typical details showing entry to Fuel Filing Station
D: Street Light System
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E: Schematic Drawing
F: Landscaping
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G: Site Office Plan
H: LAYING OF WET MIX MACADAM
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We studied the laying of WMM at the chainage 9, 17, 25. The process ofLaying down of WMM of depth 125 mm is ;
First the site engineer calculates the total height after the WMM is laid down.
The total height = 303.549 Now to find the toe for the road ..
At chainage 9 Left will be 2.242 For the right it will be 4.444
At chainage 17 For the left it is 1.546 And for the right, it is 1.671
At chainage 25 For the left side it will be 1.560 and for the right it is 1.685
for the total height of the WMM from the total height of the road we have tosubtract 20mm (the depth of the B C) and it comes as 303.349
At the chainage 17 to find the camber of the road (1.546 x 1.5)/100=0.02319
Therefore for the right 301.343+0.023=301.36
For the left (1.546x2.5)/100=0.0385
Toe = 301.343-0.0385=301.304
FRL
I: STUDY OF DIFFERENT CROSS SECTION MAPS
Different types of cross section at different places are required. The maps
prepared for the specific site is studied and visually correlated with the sites.
The cross section maps and alignment map studied are;
I1. Cross section at 9.00m
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I2. Cross section at 0.00m
I3. Cross section at 25.00m
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I4. Cross section at 17.00m
I5. Cross section at 4.00m
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IA. Alignment Plan of Local Road on Road No. 7
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2.2 CAPITOL COMPLEX
Capitol Complex mainly consist of secretariat building and head of the
department building. Capitol complex area is approximate 355.79 ha. It is in
rectangular shape bordered by 60 m. ROW roads at North, East and South direction.
There is 100 m ROW road at West side. It is connected by 60 m. ROW road with
road no 2 which passes through the middle of Mantralya and Head of Department
building. Both the buildings and their ancillary units are surrounded by a ring road
diameter 1 km from the center of rectangle.
Architect for the Capitol Complex is Shri Uttam C Jain. Both the building is
divided in different blocks .Each block is connected at each floor through lobby via
canopy.We under gone for training in Mantralya Building ( Secretariat Building ) and
following observations are made.
The building consists of;
Minister block G+5 lobby l4
Secretaries block G+4 entry through lobby 4 (G+4)
Section block G+3 via lobby 1 (G+3)
Ancillary facilities block (G+2) entry through lobby 5(G+2)
The following map shows layout of Secretariat;
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We receive training on the following running work apart from the overall
understanding of building and completed work.
A: CONCRETE BLOCK
It is used for the construction purpose whose dimension is 390x190x150
(for partition wall) and 390x190x200 for Stairs Tread and riser 230 and 150
respectively.
B: ARTIFICIAL LAKE
The lake is proposed in the Landscape area of Capitol Complex and this will
make the environment friendly beautiful ambience and will help in cooling down the
surrounding temperature during the hot dry season of Raipur in Month of April to
July. The part of the lake runs in between both buildings i.e. Mantralaya and HOD
building.
Following work is studied and got training in;
a. SOLING
Soling of 200mm is done by placing the stone in angle of 30 degree with
respect to the reference wall and is covered up with the small aggregate and soil.
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b. PCC
PCC of depth 150mm is laid down up on the soling which take 2 days time for
curing.
c. Water Proofing
Water proofing of depth 75mm is done by placing stone slates after the PCC
has been done.
Lake
Raft of depth 170mm
d. Reinforcement with the cover of 40 mm .
e. Grade slab of thickness 150 mm
f. Concrete finishing.
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C: LOBBY
There are 4 lobbies in the plan, and the entry to this lobby is through the
structure called canopy. Construction of the canopy for lobby 2 has completed which
took 4 months for completion. Bar used in this canopy is of 25mm of diameter and
the footing depth is 4m.
Before starting the work the surveyor makes the template of the canopy by
taking the help of total
station. This template
makes the work of
engineer easy as it is
of exact scale as the
structure is. The
template is used to
make the curves in
steel bars. The
template is made in the
room of exact size of
the structure.
WORKER MAKING TEMPLATE.
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D: SLAB
Cover used for the slab is 30mm and for the beam they used 40mm of cover.
Picture showing labours placing the cover of 30mm under the reinforcement for the
slab.
The concrete of grade M35 is used for the slab which is pumped through
concrete pump (Capacity 30 m3
per hour and it pumps the
concrete up up to the height of 100m). Concrete is poured over the
structure with the help of labours
properly. The slab has 275 mm of
the thickness.
Lap development length is 52d
(d = diameter of the beam)
Crank length for the mid section is L/4 and for the
end it is L/5.
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F: CANOPY FOR LOBBY 1
This canopy is under construction using bar of diameter 25 mm and 36 mm
and almost 12 tonnes of bar is used
for the construction. We studied its
drawing and related to running work
for better understanding.
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G: LOBBY 3
The lobby is under construction having trapezoidal shape and height of 38 m.
The lobby has only back face vertically straight and rest all three faces are tilted in
the angle of 72 degree. This lobby is the main entrance in building.
Trapezoidal Lobby (Lobby 3) under construction
H: LOBBY 4
Constructed
All the lobbies has small openings (sky light) in the slab which will emit natural
light to the passage.
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I: WATER HARVESTING SYSTEM
Construction of Rain Water Harvesting System is studied and following
technical parameters were being adopted.
Plump concrete laid down in 2 layers
Grade slab over the plump concrete of thickness 150mm
Reinforcement with the cover of 40mm and then again laying of grade of
depth 150mm
Cover of 30mm
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Concrete finishing
Colum in water harvesting tank is of dimension 400x400
The arrangements of the rings are as under;
The pump which will pump out the water will be placed in the corner of the
tank where all the water will be collected, as the floor of the tank is in the slope of
1:50. The slope has been given because no water should remain in the tank, and the
pump machine could easily pump the water out.
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The place of the pump where all the water will get collected as the floor is in
the slope of 1:50.
The water bar used as shown in fig in every joint to restrict the water leakage
from the joint. The water bar is 200mm broad.
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Water proofing of the external wall is been done using the stone as shown
and the mixture of the cement is in the ratio of 1:3(cement: aggregate) with 100 ml of
water procch (admixture)
Stone slates used for water proofing.
Workers placing stones in the external wall.
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The C I steps provided in the tank for the future purpose.
J: SLAB IN MANTRALAYA
In between 2 consecutive column beam runs for supporting the slab which
takes more space and this place can be
used for laying fire fighting pipe, duct water
pipe etc in a easy way therefore to avoid
the turning or bending of these things we
use cap slab. This slab restrict the use
of beam in between because it takes
the required load from slab and
distribute is wisely. The grade of the
concrete used is M35
This slab has that advantage that once it achieves the strength of about 7.5 to
10 kN per mm2 we start doing tension and remove the shuttering.
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K: COLUMN
The bar used for the column is of diameter 20 and 25 mm for the round
column. The grade used for the column is M40
L: BEAM
The bar used is 20 mm diameter for the lower part and 25 to 32 mm diameter
for the upper reinforcement of the beam
For long column tie beam are used.th grade of the concrete for the beam is
M35.
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M: THERMAL ENERGY STORAGE SYSTEM
1. The thermal energy storage system (TESS) provides the shortfall of the energy
when demand is higher than the chiller capacity. Thus chiller operation is continuous
and its efficiency is at a maximum. This is the most effective way to reduce operating
costs of refrigeration process and air-conditioning and to take advantage of lower
cost off-peak electricity and to reduce the demand charge by reducing the required
electrical supply. The TESS allows real management of the cooling energy according
to the demand.
2. Thermal Energy storage tank is meant for storing cooling energy in the PCM of
nodules (in the TEST) during Off hours(in night) which is used later during peak hour
or when there is power failure.
The heat transfer fluid (Brine) is cooled by the chiller and Circulating the fluid
through the tank causes the crystallization of the PCM in the Nodules. The energy is
stored as latent heat during the liquid-solid crystallization. This Process is called
charging of TEST.
The phase change temperatures range from minus 33.05 [deg. ]C to plus 0
[degrees]C and a heat recovery nodule at 27 [degrees]C.
The Installation has 3 nos thermal energy storage Tank with capacity 0f 2375 TRH
and can back up for 4 Hrs.
3.There are 3 ways of operation of TEST.
I) Parallel (Direct Production+ Charge)
II) Series Down Stream (Charge)
III) Series up stream (Direct production+ discharge)
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The requirement is of 2375 TR(approx) to cool the area of 44000 Sft as
coming under air conditioned area.
Here chiller installed capacity is of
325TR * 4 nos = 1300TR and 3 will
be in operation at a time, so
utilization of chiller capacity is
325TR * 3 = 975 TR.
Thus we can utilize rest of our
requirement from TEST and by
this process we will be able to
save Electricity Bill up to 40% -60%.
The nodules shown in above picture stores cooling energy i.e. they come at lower
temperature and are capable of releasing energy as and when require basis.
N: AIR HANDLING UNIT
The air handling unit is an integrated piece of equipment consisting of fans,
heating and cooling coils, air-control dampers, filters and silencers. The purpose of
this equipment is to collect and mix outdoor air with that returning from the building
space. The air mixture is then cooled or heated, after which it is discharged into the
building space through a duct system made up of five-feet diameter pipes.
The material used for Insulation of the Air
Handling Units are;
Bitumen coating
Litimun
Glass wool
Sheet
Steel jali
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O: SCREEN WALL
Screen wall is provided to the
building to restrict the sunlight inside
the room and this will make the room
cool enough which decreases the
electricity cost.
Shuttering plan for the screen wall
To lock the suttering tie rod is used
for the purpose.
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P: PARGOLA
This provided in the ancialry unit of the Mantrayla beside the cafeteria. The
pergola is designed for creation of shade and to support climbers for a natural
ambience.
Over view
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Q: MINISTER BLOCK
This block is design for 3 secretary 12 ministers and 12 MLA and the 5 th floor
is for Chief Minister
For one minister there is
provision of 1 cabin, 1 ante
room, toilet, balcony, personal
secretary room, personal assistant
room and other staff room. Each will
have waiting room which will be
covered by wall of glass block.
Finishing of each floor include
false ceiling inside which galvanized
tray (for caring electrical wire) fire
pipe and insulation pipe are running.
The side of the false ceiling is
covered by aluminium sheet which
open able for any future
maintenance purpose. The lintel
level for this project is 2600mm.
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2.3 WATER SUPPLY SYSTEM
JITF Aquasource is working with Naya Raipur Develoment Authority for the
development of Water Supply System in Naya Raipur under a Build, Operate and Transfer
(BOT) concession framework. The project comprises the development, design, construction,operation and maintenance of water supply and treatment facilities for a concession period
of 8 years.
Capacity: 102 MLD
Revenue Model: Bulk water supply to the client on annuity basis.
Project Value: Rs 150 Crore; US$ 35 Million
A: RAW WATER PUMPING MAIN
The construction and development of Raw Water Pumping Main is going on. The
whole system, map, charts and drawings are studied. Running work is seen and learnt
following things;
This is the Raw Water Pumping Main layout drawing and this shows that it
being laid almost along the existing road. The intake well which is under
construction on the Mahanadi is 25 km away from the water treatment plant being
constructed in village Pacheda within Naya Raipur.,
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B: MS PIPE
M S pipe are being used in the water supply system after coating it by the
cement concrete to prevent it from corrosion and rusting. It is coated by a specially
designed CC coating plant containing a rotor which rotates the pipe and a cement
concrete pump having a nozel at the end of pipe. Reinforcement of wire mesh is
used as a base for CC coating, in other words it is Reinforced CC coating.
Inside Coated MS Pipe
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C: INTAKE WELL
For the water supply system the INTAKE well is under construction on the
river Mahanadi which is 25 km away from the water supply system and connected
through the M S pipe of Diameter 1 m.
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D: MASTER BALACING RESERVOIR
Master balancing reservoir is under construction on the site for the water
treatment plant. This has 16 column of 450 mm diameter and 37 column of 550 mm
diameter.
CROSS SECTION : MASTER BALACING RESERVOIR
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F: THE WATER TREATMENT PROCESS
a) AerationAeration is the process of bringing water and air into close contact in order to
remove dissolved gases, such as carbon dioxide, and to oxidize dissolved
metals such as iron. It can also be used to remove volatile organic chemicals
(VOC) in the water.
Cascade Aerators
A cascade aerator consists of a series of steps that the water flows over. In all
cascade aerators, aeration is accomplished in the splash zones. The aeration
action is similar to a flowing stream. Splash areas are created by placing
blocks across the incline. Cascade aerators can be used to oxidize iron and to
partially reduce dissolved gases. They are the oldest and most common type
of aerators.
b) Flocculation
Alum is added to the water in FLASH MIXER for flocculation.
c) Clariflocculator
In this treatment plant, the flocculator and the clarifier is combined together to
achieve economy in construction. The combined unit of flocculator and
clarifier is known as clariflocculator.
Clariflocculator have two concentric tanks with inner tank serving as
flocculation basin and outer tank serving as clarifier.
WorkingTreated liquid flows first to the flocculation tank where polymer/alum is added
to promote floc growth, then up through the plate pack(s) while the solids
settle (out due to gravity) to the bottom sludge cones.
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G: CONSTRUCTION OF CLARIFLOCCULATOR
Diameter of clarifier = 37.3 m Cover used = 50mm Bar used =12 mm Development length = 50d and 80 d. Wall thickness =250 mm
Pipe used 12mm with the coating of 25mm and cover used is 10mm.
d) The sludge formed is collected on SLUGE SUMP PIT.
e) The water then passes through FILTER HOUSE where the small particles ofimpurities get collected.
f) Then the water is collected on the master balancing reservoir.
g) The cleaning of the filter house is done by the back wash and the sludge getscollected in filter backwash waste sump.
The water collected on the MBR is then will be distributed to the town
through Ductile Iron Pipe of the radius 1 m which further reduces to 900m as
per the design.
ABHISHEK SHARMA
Enrol No. A2315808027
Class: 7 CE 1
Course : B.Tech (Civil)Batch: 20 08-12
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Reference:
1. Naya Raipur Development Plan 20 31
2. DPR and working Drawings for 100 m, 60 m ROW Roads for Naya
Raipur.
3. DPR and working Drawings for Capitol Complex, ( Secretariat Building
+ Head of Department Building + Ancillary Buildings and Landscape
around) within Naya Raipur
4. DPR and working Drawings for Water Supply System for Naya Raipur.
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Industry guide;