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Feasibility Report

31st August 2017

Hubballi-Dharwad Smart City –Underground Ducting forElectrical/Data distribution.

Feasibility Report – Underground Ducting for Electrical/Data distribution - Hubballi Dharwad Smart City Limited

Prepared for Hubballi Dharwad Smart City Limited of 67

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REVISION STATUS

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1 RO DB SH DG 31-08-2017 Submission



Table of Contents1. Executive Summary 11

2. Project Introduction 13

2.1 Background 13

2.2 City Overview 13

2.3 Smart City Mission 14

2.4 Project Idea and Scope 15

2.5 Necessity of the project 16

2.6 Project Description 17

2.7 Site Description 18

2.8 Site topography 18

2.9 Site Reconnaissance 18

2.10 Industry Overview 19

2.11 Regional Profile 20

2.12 City Connectivity 21

2.13 Climatic Conditions 22

2.14 Land Use Pattern of the city 22

3. Existing System and its Analysis 24

3.1 Introduction 24

3.2 Existing System 24

3.3 Past/Ongoing Projects and Proposals 24

3.3.1 Work involved details (By HESCOM) 25

3.4 Existing System Analysis 28

3.5 Conclusion 28

4. Project 29

4.1 Project Components 29

4.1.1 Under Ground System-Type-1 30

4.1.2 Under Ground System-Type-2 31

4.1.3 Under Ground System-Type-3: 32

4.1.4 Underground System- Type-4 33

4.1.5 Underground System-Type-5: 33

4.1.6 Cost implication of different underground components is indicated in table 5 34

4.2 Proposed Underground System In Various Widths Of Roads: 35

4.2.1 FOR ROAD WIDTH OF 14M TO 30M: 38



4.2.2 For Road Width Of 9m to 12m 41

4.2.3 For Road Width Of 6m-8m 44

4.2.4 For Road Width Of 3m To 5m: 46

4.3 Proposed HDPE Ducts for Underground Ducting: 47

4.3.1 HDPE Ducts For Fibre Optics And Communication Cable 48

4.3.2 Comparative Analysis Of Different Types Of Pipes: 48

4.4 Recommendations: 49

4.5 Approach & Methodology, Studies, Surveys Including Data Collection, Analysis 50

4.6 Best Case Studies for similar projects in India/World 52

4.7 Referenced Studies and Surveys 53

4.8 SWOT Analysis 54

5. Project Financials 55

5.1 Project Design 55

6. Statutory and Legal Framework 57

6.1 Legal And Regulatory Framework: 57

6.2 L0cal Regulatory Framework 57

7. Indicative Environmental & Social Impacts 58

7.1 Introduction: 58

7.2 Air quality: 58

7.2.1 Impacts during Construction for proposed project: 58

7.2.2 Impacts during Operation 58

7.2.3 Mitigation Measures: 59

7.3 NOISE QUALITY 59

7.3.1 Impacts during Construction 59

7.3.2 Impacts during Operation 59

7.3.3 Mitigation Measures 60

7.4 WATER QUALITY 60


7.5 LAND ENVIRONMENT 60

7.5.1 Impacts of Construction Wastes 60


7.6 SOCIO ECONOMIC IMPACTS FOR PROPOSED PROJECT 61

7.7 POTENTIAL ENVIRONMENTAL IMPACT MATRIX 61

7.8 CONCLUSION 64

8. Operating Framework 65



8.1 INDICATIVE PROJECT STRUCTURING 65

8.1.1 Milestones 65

8.1.2 Operation and Maintenance 66

8.2 RISKS AND MITIGATION 66

8.2.1 Risks 66

8.2.2 Mitigation 66

9. WAY FORWARD AND CONCLUSIONS 67



List of Tables

Table 1 : Benefits of underground ducting and its limitations 17

Table 2 : Details of Industrial Estate on Gokul Road 20

Table 3 Land Use of Hubballi- Dharwad (2000) 23

Table 4: Land Use of Hubballi Dharwad -2021 (proposed) 23

Table 5 : Cost comparison of different type of ducting 34

Table 6 : ROW of roads in Hubballi ABD area 36

Table 7 : Comparative analysis of different types of pipe 48

Table 8 : Approach adopted for project 50

Table 9: Methodology 51

Table 10: SWOT Analysis 54

Table 11 : Capital cost of under grounding 55

Table 12 : Potentiail environmental impact matrix for Hubbali town 63

Table 13 : Summary of environmental management plan 63

Table 14: Major Milestones and Time Allocated 65

Table 15 Tentative planning for next deliverables 67



List of Figures

Figure -1: Look of a city with and without overhead lines .......................................................................16

Figure -2: ABD Area & Surroundings .............................................................................................................18

Figure -3: Existing 11kV transmission line map......................................................................................... 26

Figure -4: Existing 415V power transmission lines of Hubbali town .................................................. 27

Figure -5: Existing man holes for OFC .......................................................................................................... 27

Figure -6: Utility Tunnel (Typ) ........................................................................................................................ 30

Figure -7: Utility duct(Typ) ................................................................................................................................31

Figure -8: Electrical & ICT trench (Typ) ....................................................................................................... 32

Figure -9: Pipe ducting(typ) ............................................................................................................................. 33

Figure -10: C-pipe ducting (Typ) ..................................................................................................................... 34

Figure -11: Road map of Hubbali town.......................................................................................................... 37

Figure -12: Percentage road length of Hubbali town ................................................................................ 38

Figure -13: Layout sec. of Gokul Road (Typ)-Industrial estate junction to Airport ........................ 39

Figure -14: Layout section of Gokul Road- Hosur circle to industrial estate .................................... 39

Figure -15: Layout section of Siddappa Kambli Road- Hosur circle to Railway station ................40

Figure -16: Layout sec. of 9M TO 12M wide Road (Typ)........................................................................... 42

Figure -17: Road crossing Figure -18: Feeder pillar Figure -19: Man hole ............................. 43

Figure -20: Layout sec. of 8M wide road (Typ)........................................................................................... 45

Figure -21: Layout sec. of 3M TO 5M wide Road (Typ)............................................................................. 46

Figure -22: De-merits of RCC pipe.................................................................................................................. 47

Figure -23: Merits of HDPE pipe..................................................................................................................... 47

Figure -24: Multiple bundled ICT duct.......................................................................................................... 48

Figure -25: Bangalore smart roads under tender S.U.R.E...................................................................... 53

Figure -26: Utility tunnel, Gift city, Gujarat ................................................................................................ 53



Abbreviations

ABD - Area Based Development

AWCS - Automatic Waste Collection System

BRTS - Bus Rapid Transport System

CBD - Central Business District

CBT - Central Bus Terminal

CCTV - Closed-circuit television

dB - Decibel

DPR - Detailed Project Report

EPC - Engineering Procurement Construction

FY - Financial Year

GHMC - Greater Hyderabad Municipal Corporation

GoI - Government of India

GoK - Government of Karnataka

GPS - Global Positioning System

Ha - Hectare

HDMC - Hubballi Dharwad Municipal Corporation

HDSCL - Hubballi-Dharwad Smart City Limited

HDUDA - Hubballi-Dharwad Urban Development Authority

IT - Information Technology

Km - Kilometres

KSIIDC - Karnataka State Industrial and Infrastructure Development Corporation

KSRTC - Karnataka State Road Transport Corporation

MD - Managing Director

MoEF - Ministry of Environment and Forests

MoUD - Ministry of Urban Development

MSME - Micro, Small & Medium Enterprises



NBP - Non Biophysical Components

NGO - Non-Governmental Organisation

NH - National Highway

NWKSRTC - North West Karnataka State Road Transport Corporation

O&M - Operation and Maintenance

PCB - Pollution Control Board

PK - Pourkarmikas

PMC - Project Management Consultant

PwC - PricewaterhouseCoopers Pvt. Ltd.

RCC - Reinforced Cement Concrete

SCC - Special Contract Clause

SCP - Smart City Proposal

SH - State Highway

SPCB - State Pollution Control Board

SPV - Special Purpose Vehicle

SWOT - Strengths, Weaknesses, Opportunities, and Threats

TCE - TATA Consulting Engineers Limited

ULB - Urban Local Body

UNEP - United Nation Environment Programme

USEPA - United States Environment Protection Agency

HESCOM Hubli Electricity Supply Company Limited



1. Executive Summary

Hubballi-Dharwad, an administrative node in North Karnataka is also a well-known commercial hub of

the region. The population of the city is 9.43lakhs as per 2011 census. Hubballi Dharwad under

Government of India’s Smart Cities Mission is being developed as one of the 100 Smart Cities in the

country.

Just like other city services, electricity is a vital resource for day to day living and overall development of

a city. An efficient, reliable and well organized power sector capable of delivering quality power along

with quality service is a necessity for any progressive community. As suggested under smart city features

in the Smart Cities Guidelines, cities have to focus on energy efficiency and promote underground electric

wiring to ensure continuous electricity supply. In Hubballi-Dharwad, Hubballi Electricity Supply

Company Limited (HESCOM) has been vested with the responsibility of distribution of power to the

households. Power supply in Hubballi-Dharwad is partially through overhead transmission lines &

partially underground. 80% of the overhead HT lines have been laid underground and process for

putting remaining 20% HT lines underground is under process. As of now, all LT lines are overhead

transmission lines.

Underground ducting is the replacement of existing overhead power supply

system and/or telecommunication line and/or similar services with underground cables. This is not

only performed for aesthetic, but also serves as the additional significant purpose of making the

power lines less susceptible to outages during high wind thunderstorms and other natural

calamities.

As electrical lines are often buried along existing public streets and right-of-way, provision of

underground services projects is best incorporated into plans for street improvement to reduce

unforeseen interruptions, rliability of power supply, public safety and reduction of maintenance

cost.

Based on the site survey conducted and also discussions with the KPTCL / HESCOM authorities, the

underground ducting project shall be carried out along the public streets.

In this feasibility study, separate directly and completely grounded High density polyethylene pipe

ducts for carrying power, fibre optic or any other utility cables or wires are recommended.

Smart metering is not considered in this feasibility report since for application of smart metering,

the entire power supply distribution system has to be studied separately. Integration of smart



metering for 24x7 electricity supply has been discussed with HESCOM, and this is envisaged to be

taken up by HESCOM and HDMC in later phases. For now, implementation and cost of smart

metering hasn’t been considered. The cost for underground ducting has been estimated to be

around Rs.108 Crore and is expected to be executed on EPC contract. The construction

cost will be borne by HDSCL and the O&M shall be done by service providers.

The social and environmental studies have also been carried out and it has been inferred from these

studies that the proposed project would be beneficial to the community as this can make the power

line less susceptible to outages during high wind thunderstorms and also contribute in the aesthetics

look of the city.



2. Project Introduction

2.1 Background

Government of India intends to transform 100 Indian Cities to Smart Cities. The twin city of Hubballi-

Dharwad has been selected to be developed as a smart city under the Smart Cities Mission launched by

the Ministry of Urban Development (MoUD). In September 2016, Hubballi-Dharwad was selected

amongst the 27 winners of the "2nd Round Competition of SCM” based on the Smart City Plan (SCP).. As

mandated in the mission guidelines, Hubballi-Dharwad has incorporated a Special Purpose Vehicle

(SPV) – Hubballi-Dharwad Smart City Limited (HDSCL) (the “Authority”) to plan, design, implement,

coordinate and monitor the smart city projects in Hubballi-Dharwad.

Further, HDSCL has received funds from Government of India (GoI) and Government of Karnataka

(GoK) for developing Hubbali-Dharwad as Smart City and implementation of projects proposed by city

under the mission. Project implementation will include carrying out the feasibility study, preparation of

project reports, detailing out the plans, and monitoring and management of the projects. Pursuant to

above, PricewaterhouseCoopers Pvt. Ltd. (PwC) in association with TATA Consulting Engineers Limited

(TCE) and Aminbhavi and Hegde (AH) have been appointed as Project Management Consultant (PMC)

for providing consultancy services for detailing out the ABD and Pan-City plans; preparation of detailed

project reports for the envisaged project packages and project management consultancy support for the

same.

The ABD area is mainly characterized by two kind of land use- commercial and administrative.

2.2 City Overview

Hubballi- Dharwad as a city is an agglomeration of two towns in the northern part of state of Karnataka..

Hubballi-Dharwad is one of the oldest city in Karnataka state with strong cultural and historical

importance, and is also the second-largest urban settlement in Karnataka after Bengaluru. The twin cities

of Hubballi and Dharwad are located at a distance of about 20 km from each other and are municipally

administered by a single Municipal Corporation. Hubballi was identified as an important commercial

and trade centre for the entire northern Karnataka region by the British. Hubballi and Dharwad were

separate municipal entities, but due to functional and administrative interdependency, a common

municipal borough was constituted in the year 1925 for the combined population of 69,940. Further,

Hubballi-Dharwad municipality was upgraded to corporation in the year 1962. Hubballi is the

commercial centre and business hub of North Karnataka region. Crops including cotton, chilli pepper



and peanuts are grown aplenty in the surrounding rural agricultural areas, and Hubballi is a major

trading centre for these commodities. It is also an important city for the Indian Railways, as it is the

headquarters for South Western Railway zone and the Hubballi Railway Division. Hubballi is a major

railway junction in North Karnataka. It is also the headquarters of North Western Karnataka Road

Transport Corporation. Hubballi also houses the largest number of government offices outside

Bangalore. . It has more than 3,000 small and medium industries. Approximately 55% of the city‘s

population is involved in the tertiary sector. The demographic indicators namely sex ratio and literacy

rates are favourable and higher than that of Karnataka and India. The existing population of the

Hubballi- Dharwad Municipal Corporation area as per Census 2011 is about 9.43 lakhs.

2.3 Smart City Mission

Smart Cities Mission is an urban renewal and retrofitting program by the Government of India with a

mission to develop 100 cities (the target has been revised to 109 cities) all over the country making them

citizen friendly and sustainable. The Union Ministry of Urban Development is the key role player in

designing, implementing and monitoring the mission in collaboration with the state governments and

urban local bodies of the respective cities.

Round-1 Cities Round-2 Cities Round-3 Cities

The objective of Smart City Mission is to promote cities to provide core infrastructure and give a decent

quality of life to its citizens, a clean and sustainable environment with application of ‘Smart’ Solutions.

The focus is on sustainable and inclusive development and the idea is to look at compact areas, create a

replicable model which will act like a light house to other aspiring cities. The mission is meant to set

examples that can be replicated both within and outside the Smart City, catalysing creation of similar

Smart Cities in various regions and other parts of the country.



Accordingly, the purpose of Smart Cities Mission is to drive economic growth and improve quality of life of

people by enabling local area development and harnessing technology especially that leads to Smart

outcomes. Area-based development (retrofit and redevelop) will transform existing areas including slums

into better planned ones thereby improving liveability of the whole City. Application of Smart Solutions

will enable cities to use technology, information and data to improve infrastructure and services.

Comprehensive development in this way will improve quality of life, create employment and enhance

income for all, especially the poor and the disadvantaged, leading to creation of inclusive Cities.

2.4 Project Idea and Scope

The purpose of Smart Cities Mission is to drive economic growth and improve quality of life of people by

enabling local area development and harnessing technology, especially technology that leads to Smart

outcomes. Area-based development will transform existing areas (retrofit and redevelop); including

slums, into better planned ones, thereby improving livability of the whole City. 24 X 7 power supply is an

integral component of smart city development.

Electrical power is transmitted through either overhead power lines or underground cables. Each of the

two types has its benefits as well as pitfalls as well as places where it is commonly used. The choice of

which method to use, is influenced by voltage, cost, safety, type of application, and other factors. Whereas,

the overhead lines are cheap, easy to install, troubleshoot and upgrade, the same cannot be said about the

underground cables. Underground cables have their place too, and despite being expensive, they have

several advantages. These are mostly used where it is dangerous to have overhead lines such as densely

populated areas as well as in providing the missing link in areas where overhead lines cannot be used.

Electrical lines along with Information and communication technology (ICT) lines can be taken under

ground in various forms for eg: Utility Tunnel / Ducting / Electrical Trench/ Piping ducting/ Cables

buried directly in ground. All these are possible subjected to availability of space.

“Undergroundducting” is one of the projects taken under smart city proposal for Hubballi-Dharwad.

This project aims towards underground ducting of overhead LT transmission lines (415V) and ICT lines

across the city for 24 X 7 power supply. The aim of the project is to provide assured power supply in the

city. Separate strategies need to be planned for residential and non- residential areas in the ABD area.

The scope of the Feasibility Report for underground ducting in ABD area of Hubballi-Dharwad Smart City

Limited has been finalised after carrying out the following studies:

• Reconnaissance Survey

• Stakeholder consultation and surveys

• Case studies of best practices around the world



• SWOT analysis

• Indicative Environmental & Social Impacts

• Project Financials

• Statutory and Legal Framework

2.5 Necessity of the project

The purpose of Smart Cities Mission is to drive economic growth and improve quality of life of people by

enabling local area development. By doing so, sustainability and environmental balance should be

maintained. The residents and other stake holders of the city should be ensured with all basic amenities.

24 x 7 power supply is one of these basic amenities. In an effort to raise the standard of living in Hubballi

and to make the city a true smart city, the HDSCL intends to introduce provisions for assured electricity

supply in the city.

As per smart city proposal, for assured 24 x 7 hours electricity supply with minimum outages, the power

supply in the city shall be through underground cabling system instead of overhead transmission line. In

some of the best cities in the world (e.g. London or Sydney) we find no overhanging wires or cables across

buildings, promenades, streets etc. All cabling is underground, whether it is power, internet, cable TV,

fibre optic or any other utility cables or wires. Underground ducting provisions not only reduce power

outages but at the same time improve the aesthetics of the city. Also they are relatively easy to maintain

and remain less vulnerable during strong winds and inclement weather. Table 1 provide the advantages

and limitations of the underground ducting

Photographs below depict the improvements in aesthetics observed from the underground ducting when

compared to that of the above ground installations.

Figure -1: Look of a city with and without overhead lines



Table 1 : Benefits of underground ducting and its limitations

Benefits from Undergrounding Limitations to Undergrounding

Improved reliability in wind and

winter weather events.

Increased cost of materials and labour

Aesthetics Increased duration of outages because failures

are difficult to locate and access

Can be paired with undergrounding

cable and telecommunication lines

Shortened line life as compared to overhead lines

Can reduce cost of conversion through

salvage

Exposure to road salt and corrosive chemicals.

Increase in property values with

underground utility connections.

Higher maintenance costs.

Can shorten outages duration after

major storm damage

More complex and costly maintenance and repair

Reduction in public safety risks from

downed wires

Susceptible to safety risk during storm surges

and flooding

2.6 Project Description

As per smart city proposal, for assured 24 x 7 hours electricity supply with minimum outages, the power

supply in the city shall be through underground ducting instead of overhead transmission lines.

Underground ducting are planned to be implemented along existing public streets along the right-of-way

after reconnaissance survey and land use pattern study and according to existing condition in the area to

ensure roads are free from overhead cables and electricity lines.

Refined methodology is followed in submitting the project deliverables in accordance with thefollowing stages:

Deliverable 1: Feasibility Report

Deliverable 2: Draft DPR

Deliverable 3: Final DPR



2.7 Site Description

The Project area for which the Underground Ducting for Electrical/Data distribution plan of action is to be

prepared is located in 992 acres encompassing the city centre and growth corridor of Hubballi- from

Airport to Railway, linking BRTS. The site is near to Commissioners office and other government offices.

Major commercial area and old markets of Hubballi - Dharwad city are part of ABD area. It links airport to

the railway station connecting major traffic junctions like Rani-Chennama Circle, Court Circle, Hosur

Circle etc. The ABD area also includes BRTS Depot, NWKRTC Depot, old and new bus stands along Gokul

Road. There is also green cover from MG Market and other open spaces like Nehru Stadium, Tolenkere

Lake etc. A 120 acre of Industrial Cluster also exists near Gokul Road Police station.

Figure -2: ABD Area & Surroundings

2.8 Site topography

The site topography is in such a way that Gokul road forms a ridge line and the site slopes on both

directions of the Gokul Road. The entire area drains towards two areas – Tolankere Lake as well as Main

Nala passing near the Clarks hotel which leads from Unkar lake. The elevation varies from 647 to 620 m.

2.9 Site Reconnaissance

The consultant team has carried out reconnaissance survey in the ABD area and marked the existing areas

where power supply is through overhead transmission lines. The complete information on the existing



system has been provided in the existing system chapter. The efficiency in the existing system has been

suitably analysed and accordingly necessary planning has been done to make this project more viable in

social, economic and administrative terms.

2.10 Industry Overview

Hubballi-Dharwad is the most urbanized area in north Karnataka. It is also known as the commercial hub

of north Karnataka region. The major contributors to economy of Hubballi-Dharwad city are tertiary-

based activities, namely, trade and commerce including agro-based activities, transport and Education

sector. Hubballi is the commercial hub and major economic activities include industries, trade and

commerce. It has more than 3,000 small and medium industries. Approximately 55% of the city‘s

population is involved in the tertiary sector.

The railway workshop and Karnataka Central Co-operative Textile Mill were established in the city during

the British regime. A number of ginning and pressing units were established during the early 20th century

in the cotton belt region around it; the activity has gradually declined due to export of cotton to Mumbai

and other areas. There were 6 textile industries in Hubballi including the Maratha Spinning and Weaving

Mill. About 2,000 people were employed in these textile units. The railway workshop in Hubballi

manufactures passenger coaches and goods wagons. Karnataka State Road Transport Corporation

(KSRTC) also established its workshop in Hubballi and is engaged in bodybuilding for buses belonging to

the corporation.

The other modern industries in the area includes food processing, woodworking, steel furniture, printing,

domestic utensils, service industries, and miscellaneous units. The Hubballi region is also known for its

rich mineral deposits like manganese, iron, and copper, but not in sufficient quantity for economic

exploitation. Industries are located along national highway, station road, Koppikar Road, Neeligin Road,

and Dajibanpeth area of Hubballi . There are around 9800 industries in Hubballi with 10 major

industries.

There are 20 Medium & Large Scale Industries in and around municipal limits with an investment of

Rs.744.66 Crores providing employment to 7325 persons, Tata Marcopolo, Tata Motors & Telcon, Bharath

NRE Coke Ltd, ADM Agro Industries Ltd, Micro Finish Valves Ltd, Mevin Mifrom Pvt Ltd, NGEF, Wier

BDK, RSB Transmission Ltd, VRL Logistics Pvt Ltd, Bellad Group of Industries, are key industrial giants

in the area. The Large & Medium scale industries are engaged in production of Buses, Electrical Motors &

Centrifugal Pumps, Spinning Yarn Ceramic Tiles, M.S.Ignots and Castings, Automobile Spares,

Excavators, Machine Tools, Liquid Petroleum Gas Bottling Plant, Draw Shaft Components etc, Industrial

Valves and Machinery Components, Food Products like, Mango Pulp & Juice are the major exportable

items from Hubballi-Dharwad . A Software Technology Park is functional in Hubballi, which has added to

the district`s ability to cater to the requirements of Information Technology and IT-enabled projects.



The ABD area has 120 acre MSME cluster on Gokul Road near Basaveshwar Nagar. The details of the

industrial estate are given in the table below.

Table 2 : Details of Industrial Estate on Gokul Road

No IndustrialEstate

Year Landacquired (inAcres)

No. ofsheds

No. ofsheds

allotted

Vacantsheds

No. ofsites

developed (inAcres)

No.of

sitesallott

ed

No.of

vacant

sites

No.of

unitswork

ing

1 Gokul and

M.T.SagarHubballi

1958-1994

Ist Stage

IInd Stage

123.00Acres

502 502 0 310 310 310 812

2.11 Regional Profile

Hubballi is located between 15° 11' - 15° 31' North Latitude and 75° 01' - 75° 28' East Longitude at an

altitude of 627.97m above sea level. Located at about 425 km north of Bangalore and separated by a

distance of 20 km, both the cities are connected to Pune and Bangalore by rail network; other rail links

connect the city with Hotgi, Sholapur, Marmagoa and Bellary. The twin cities are also connected to

Mumbai and Bangalore by Air. The city attracts floating population from neighbouring urban centres such

as Karwar and other towns from north Karnataka as well as Dharwad district, for the purpose of trade and

commerce, health, and education. It also attracts population from across the district to avail the

administrative services provided at various district offices both in Hubballi and Dharwad. Hubballi is the

educational hub of north Karnataka and attracts population from the north Karnataka region for

educational purpose.

The ABD area of 992 acres is located at the heart of Hubballi city and is very well connected with all the

surrounding areas by road. The ABD area is mainly planned based on a transit-oriented development. Two

bus stations- old as well as new NWKSRTC station and Central Bus Terminal (CBT) fall inside the limits of

ABD area. The Hubballi Junction Railway station, which is the headquarters of South western Railway

marks the eastern boundary of ABD area. Also, there is also an airport in ABD area near Gandhi Nagar,

which has daily flight to Bangalore.



2.12 City Connectivity

Hubballi – Dharwad is well connected to the major cities by road network and rail network. It has air

connectivity with Bangalore and Mumbai. The city is also the head quarter of divisional railways.

National highway, NH4, is the major corridor of Hubballi Dharwad passing through the central city core

and connects Pune and Bangalore. Dharwad is predominantly set to the west of NH4. The major roads in

both cities follow a radial pattern, originating from the centre of Hubballi city and connecting other

major towns like Bijapur, Karwar, Marmagoa and Sholapur. The National highway NH-4 built to bypass

traffic from PB road connects the twin cities with Bangalore and Pune. Other highways passing

through/connecting the city are NH-218 (to Solapur), NH- 63 (to Haliyal and Gadag), SH- 73 and SH- 28

(to Goa). The major district roads connect Kalghatai, Soundhatti and Halyal etc.

Hubballi is well connected by the rail network to Bengaluru and other major cities such as Mumbai in the

north-west and Thiruvananthapuram in the south. Being an important railway junction, there are daily

trains to Bijapur, Solapur, Bellary, Pune, Ajmer, New Delhi, Hyderabad, Ahmedabad, Vasco, Vijayawada,

Mysore, Tirupati, Chennai, and Howrah. There is an operational airport in Hubballi.



2.13 Climatic Conditions

Hubballi-Dharwad experiences a tropical climate with distinct wet and dry seasons. However, Dharwad

enjoys a better climate than Hubballi in view of its higher altitude. Owing to the location, Dharwad enjoys

a pleasant weather with moderate climate throughout the year. The coolest month is December with an

average low temperature of 15.4 °C and the hottest month is April with an average high temperature of

32.8 °C. The region receives rainfall from both northeast and southwest monsoons, and the wettest

months are September and October. The average annual rainfall is around 675 mm for Hubballi and 812

mm for Dharwad.

2.14 Land Use Pattern of the cityAs per the comprehensive development plan, the percentage of land under residential use has gone up

from 25% to 31% between 1986 and 2000. However, this is still low compared to the prevalent norm of

35% to 40% of land under residential use, indicating the availability of potential land for residential

development. Growth in commercial land use is slow compared to what has been envisaged in the

comprehensive development plan. Overcrowding of the existing CBD at Hubballi and lack of demand for

commercial space in CBD at Navanagar are one of the major reasons for the slow pace of growth in

commercial land use. The table 2 below shows land use of 2000 and table 3 shows proposed land use.



Table 3 Land Use of Hubballi- Dharwad (2000)

Sl.No Land Use Area(Ha) Area(%)

1 Residential 3,196 31%

2 Commercial 336 3%

3 Industrial 528 5%

4 Public and Semi-Public 1,750 17%

5 Recreational 663 6%

6 Transportation and Communication 2,269 22%

7 Water Bodies, Agricultural & Others 1,632 16%

Total 10,374 100%

Source : Comprehensive Development Plan (2003), HDUDA

As per the population projections carried out in the demography section, the city would have a population of

11.6 lakhs by 2021. The proposed land use plan is as shown in table below:

Table 4: Land Use of Hubballi Dharwad -2021 (proposed)

Sl.No Land Use Area(Ha) Area(%)

1 Residential 5,717 42%

2 Commercial 835 6%

3 Industrial 738 5%

4 Public and Semi-Public 2,021 15%

5 Recreational 1,431 10%

6 Transportation and Communication 3,005 22%

7 Water Bodies, Agricultural & Others -- --

Total 13,747 100%



3. Existing System and itsAnalysis

3.1 Introduction

As suggested under smart city features in the Smart Cities Guidelines, cities have to focus on energy

efficiency and promote underground electric wiring to ensure continuous electricity supply. City of

hubballi is fed from 1 no. of 220kV sub-station, 7 nos. of 110kV sub station and 2 nos. of 33kV substation,

which are located at different places in the city. Considering the human safety, aesthetic look, overall

traffic and uninterrupted supply requirements, HDMC intends to go for underground ducting system as

part of smart city project.

80% of the 11kV HT overhead transmission lines are underground and commissioned. Remaining 20%

work is under execution. Existing 11kV transmission lines map is shown in Fig. 3.

The low voltage(415V) overhead transmission lines which are running parallel with 11kV HT overhead

lines has to be removed/put into underground system. .

3.2 Existing System

At present HESCOM is converting all 11kV HT overhead lines to underground cabling under IPDS

(Integrated power distribution scheme).

Out of entire Hubbali city:

1/3 area has been covered in the year 2006 and has been commissioned.

Of the remaining 2/3 area- 50% has been executed and ready for commissioning. Remaining

50% is under execution.

OFC cables are being laid by government (BSNL) as well as private vendors along with HT cables.

All 415V power lines in the city are overhead transmission lines and need to be converted to

underground. Existing 415V transmission lines of Hubballi town is indicated in fig. 4.

3.3 Past/Ongoing Projects and Proposals



HUBLI ELECTRICITY SUPPLY COMPANY LIMITED (HESCOM) mission is to ensure reliable quality

power to its customers at competitive prices. HESCOM is committed to achieve this. As a part of this,

HESCOM has started “Conversion of existing 11kV Over Head Feeders to 11kV Under Ground cable

system in Hubli City”.

3.3.1 Work involved details (By HESCOM)

27 Nos. of feeders are proposed, By Laying of 3cx400sq.mm UG Cable Trunk Line: 123.23km.

For Looping the Distribution Transformer Centers (DTC’s) 117 Loops are proposed using

3cx95/240sq.mm UG Cable: 340.51km

No. of Ring Main Unit (RMU’s) to be provided for 27 nos of proposed feeders

(OD+3VL,2OD+2VL,2OD+1VL) : 92 nos.

Providing additional RMU panels to existing RMU’s : 12 nos.

Providing 3rd pole by looping Distribution Transformer Centers (DTC’s) no. of Transformers to

be covered.



Figure -3: Existing 11kV transmission line map



Figure -4: Existing 415V power transmission lines of Hubbali town

Figure -5: Existing man holes for OFC



3.4 Existing System Analysis

In Hubballi 80% of the overhead HT lines have been laid underground and process for putting remaining

20% HT lines underground is under process. All LT lines in the city are overhead transmission lines. It

has been found essential to convert all overhead transmission lines & cables to underground, whether it

is power, internet, cable TV, fibre optic or any other utility cables or wires. This not only reduces the

outages during strong winds and inclement weather but also improves the aesthetics of the city.

As part of the survey, existing overhead transmission lines along with poles and transformer locations

were identified. Also, right of way of the roads along with the space available alongside the road were

identified for proposing the underground ducts suitably.

Apart from the above, there are many ICT cables laid underground already by the following agencies:

Airtel

Jio and Reliance

BSNL

Vodaphone

Idea

Docomo

3.5 Conclusion

In Hubballi 80% of the overhead HT lines have been laid underground and process for putting remaining

20% HT lines underground is under process. All LT lines in the city are over-head transmission lines.

Power reliability may be at stake with the existing 415V overhead transmission lines in the ABD area.

Hence for implementation of 24x7 power supply in ABD area, it is felt necessary and appropriate to

undertake the project of underground ducting of all electrical cables for assured power supply to the

residents of Hubballi.



4. Project

4.1 Project Components

Underground ducting is the replacement of existing overhead systems of power transmission

system or telecommunications, with underground cables. This not only improves the aesthetics, but also

serves the additional significant purpose of making the power lines less susceptible to outages during

high wind, thunderstorms or heavy snow or ice storms. Undergrounding may require the initial high

costs of electric power transmission and distribution but will decrease operational costs over the lifetime

of the cables.

Considering the human safety, aesthetic look, overall traffic and uninterrupted supply requirements,

smart cities should be laid with underground ducting system. The aerial cables that carry high-

voltage electricity supported by large pylons are generally considered as non-attractive feature of the

countryside. Underground cables can transmit power across densely populated or areas where land is

costly or environmentally or aesthetically sensitive. Underground and underwater crossings may be a

practical alternative for crossing rivers.

In normal Indian context all underground utilities are being laid as and when required where ever space

is available, fulfilling basic technical norms. In dense areas or say highly populated areas various utilities

are laid in mesh form without keeping allowances for other utilities and its technical norms. Particularly

at the time of operation and maintenance, this will become most difficult and disturbing road or footpath

while digging / excavating to open the underground utility and also damage other congruent utilities.

This is the normal situation in urban areas.

Underground ducting can be done in two different ways by making utility ducts and directly buried

through pipes. Utility tunnels are common in very cold climates where direct burial below the frost line is

not feasible (such as in Alaska, where the frost line is often more than 18 ft (5.5 m) below the surface,

which is frozen year round). They are also built in places where the water table is too high to bury water

and sewer mains and where utility poles would be too unsightly or pose danger (like

in earthquake prone Tokyo). Tunnels are also built to avoid the disruption caused by recurring

construction, repair and upgrading of cables and pipes in direct burial trenches.

Utility tunnels are also often common at large industrial, institutional, or commercial sites, where

multiple large-scale services infrastructure (gas, water, power, heat, steam, compressed air,

telecommunications cable, etc.) are distributed around the site to multiple buildings, without impeding

vehicular or pedestrian traffic above ground. Due to the nature of these services, these services may

require regular inspection, repair, maintenance, or replacement, and therefore accessible utility tunnels



are preferred instead of direct burying of the services in the ground. Utility tunnels range in size from just

large enough to accommodate the utility being carried, to very large tunnels that can also accommodate

human and even vehicular traffic.

Underground ducting for utilities can be done in the following ways:

• Utility tunnel for road width ≥ 12 meters

• Utility Duct for road width ≥ 9 meters

• Electrical & ICT duct

• Pipe ducting

• C Pipe ducting

4.1.1 Under Ground System-Type-1

Utility Tunnel

Utility Tunnel can carry all the utility services such as electricity, water, solid waste, district cooling

supply pipes, etc to the various areas across the city. Utility tunnel is considered an optimal solution to

avoid underground crowding of service lines in narrow right of way.

It is built to avoid the disruption caused by recurring construction, repair and upgrading of cables and

pipes in direct burial trenches.

A typical layout diagram and snapshot of a utility tunnel are indicated in Fig.6.

Figure -6: Utility Tunnel (Typ)

Advantages of Utility Tunnels:

Easier accessibility to utilities for maintenance and Upgrading.

Environmental impacts are minimized: such as traffic disruption



Location information is made more accessible.

An adequate airflow in ducts allows better heat transmission from electricity cables than in direct

trenched/ buried situations.

Utility tunnels range in size from just large enough to accommodate the utility being carried, to very

large tunnels that can also accommodate human and even vehicular traffic.

Dis-advantages of Utility Tunnels:

High initial construction cost as compared to traditional open excavation methods.

Space required for utility tunnel is more compared to other underground services. Only suitable for

green field projects having more wider roads.

4.1.2 Under Ground System-Type-2

Utility Duct:

In Utility Duct all the services will be located along with Electrical cables which will be placed in

separate electrical trench.

Typical layout diagram of a utility duct is shown in fig 7.

Figure -7: Utility duct(Typ)

Advantages:

This type of arrangement carries all the utility supplies in a well structured manner. It allows space for

operation, maintenance etc.



Disadvantages:

It consumes about 5 metres of space. It is more costly. So this type is more preferable for roads having

more ROW.

4.1.3 Under Ground System-Type-3:

Electrical & ICT Trench:

In this type of underground system, cables are laid in cable trays, either perforated or ladder type in

closed ducts. Cable trays are mounted in the concrete duct with the help of angles and channel. In this

type dedicated trays are provided for HT,LT & ICT cables.

A typical layout diagram and snapshot of a electrical & ICT trench are indicated in Fig8.

Figure -8: Electrical & ICT trench (Typ)

Advantages:

This can be best suited for narrow roads. The overall width of this duct is less than 2m and it is

cheaper compared to other type of ducts. Since manhole provision is there, this is far better than

directly buried in terms of maintenance. Road cutting and hence the traffic disruption can be avoided

in this system.

Disadvantages:

It consumes about 2 meters of space. Also construction of concrete ducts for installation of trays

makes it costly.



4.1.4 Underground System- Type-4

Pipe Ducting:

Electrical and ICT cables are directly carried through pipes of various diameters which are directly

buried into the ground. This can carry utilities such as power cables, ICT cables but cannot be used as

multipurpose for water supply, gas supply etc. Cable pull chamber is provided at every 100m interval

of length which helps in maintenance and fault clearance.

• A typical layout diagram and snapshot of a pipe ducting with pull chamber are indicated in fig 9.

Figure -9: Pipe ducting(typ)

Advantages:

Less cost, easy construction and less space consumption.

Disadvantages:

Maintenance provision is less compared to ducts & C-pipe.

Pipe cutting, road cutting & excavation is required in case of cable fault.

Pulling of cable would be laborious task.

4.1.5 Underground System-Type-5:

C-Pipe Ducting:

Electrical Pipe ducting consist of C shape RCC pipe of 300/ 150 mm diameter.



2 nos of C shaped pipe shall be placed one above the other to form pipe and laid in ground at the

depth of 1000/ 750 mm from ground level.

A typical layout diagram of C pipe ducting are indicated in Fig.10`.

Figure -10: C-pipe ducting (Typ)

Advantages:

Advantage of using C shaped pipe helps in easy laying of cables and also maintaining of cables during

fault.

Disadvantages:

Digging of road is required during maintenance/ laying of cable.

Soil settlement and undulation of level due to rain etc. Hence frequent maintenance is required.

4.1.6 Cost implication of different undergroundcomponents is indicated in table 5

Table 5 : Cost comparison of different type of ducting

Sl.No

Undergroundcomponent

Costimplication

Remarks

1 Utility Tunnel 50Crores/KM

High initial construction cost as

compared to traditional open excavation

methods.

Space required for utility tunnel is more

compared to other underground services.



Sl.No

Undergroundcomponent

Costimplication

Remarks

2 Utility Duct 6Crores/KM

It consumes about 5 metres of space.

So this type is more preferable for roads

having more ROW.

Maintenance costs are higher.

3 Electrical &ICT Trench

2Crores/KM

Road surfaces can be avoided from

damages.

Maintenance costs are higher.

4 Pipe Ducting 1 crore/KM Installation and maintenance costs are

less compared to other underground

components.

5 C-Pipe ducting 1.3crore/KM

Installation and maintenance costs of C-

Pipe ducting are less than other

components except pipe ducting.

Also during fault rectification, the whole

length of cable needs not to be pulled out.

Instead the top of the c-pipe duct can be

removed and the portion of the faulty

cable can be replaced.

This type of ducting is applicable for

roads with narrow ROW.

Digging of road is required for

maintenance & repair. Hence concrete

paver blocks can be used for road

restoration work. The concrete paver

block does not provide smooth riding

comfort and is subjected to yield in the

long run.

4.2 Proposed Underground System In Various WidthsOf Roads:

Based on the site survey conducted, ABD area consists of approximately 64KM of roads between 30M to 3Mwidth that need retrofitting to enhance the overall appearance of ABD area. Summary of the existing ROWwidth of roads are as under:

6% of the roads (4KM) are in the range of 3m to 5m



29% of the roads (19KM) are in the range of 6m to 8m

31% of the roads (20km) are in the range of 9m to 12m

34% of the roads (22km) are in the range of 14m to 30m.

Existing road map of ABD area is indicated in fig 11.Based on survey road map drawing, the road width ofHubballi town within the ABD area are indicated in table 6 & in fig. 12

Table 6 : ROW of roads in Hubballi ABD area

Sl. No. Road width in (m) Road length in (m) Road length in (KM)

1 3 366 0.366

2 4 1587 1.587

3 5 1888 1.888

4 6 10449 10.449

5 7 1266 1.266

6 8 6800 6.8

7 9 3534 3.534

8 10 9970 9.97

9 11 862 0.862

10 12 5937 5.937

11 14 4939 4.939

12 15 2202 2.202

13 16 2810 2.81

14 18 2643 2.643

15 22 2019 2.019

16 26 1606 1.606

17 30 5511 5.511

TOTAL 64389 65



Figure -11: Road map of Hubbali town

Feasibility Report – Underground Ducting for Electrical/Data distribution - Hubballi Dharwad Smart CityLimited


Figure -12: Percentage road length of Hubbali town

Hence based on the road width available, the following sections are recommended for utility laying.

4.2.1 FOR ROAD WIDTH OF 14M TO 30M: Underground Pipe ducting for electrical & ICT cables on both side of the road are

recommended. A typical laying arrangement in Gokul Road is indicated in the cross-section

drawing below. Pipes are laid in trefoil formation.

150MM dia HDPE pipe are used for LT cables. For street lighting along the foot paths, HDPE

pipe of 100MM dia are used.

In 6 lane divided carriage way, two nos of 100mm dia HDPE pipe for ICT & street light cables

are proposed in the median.

Feeder pillar panels will be provided to connect each Commercial outlets/ Individual Houses.

From feeder pillar, connection to individual houses shall be through UG cables which will be

taken in 50mm dia HDPE pipe as indicated in the road sectional drawing.

For street lighting cable, underground pipe ducting on both side of the road and along the

median are recommended. Typical Laying arrangements are indicated in diagram 13.

At every 100 M, road crossings shall be provided with 3 x150MM dia RCC hume pipes for HT,

LT & ICT cables & 1 x100MM dia RCC hume pipes for street light.



Figure -13: Layout sec. of Gokul Road (Typ)-Industrial estate junction to Airport

Figure -14: Layout section of Gokul Road- Hosur circle to industrial estate



Figure -15: Layout section of Siddappa Kambli Road- Hosur circle to Railway station

.



4.2.2 For Road Width Of 9m to 12m Underground Pipe ducting for electrical & ICT cables on both side of the road are preferred. Laying

arrangement is indicated below.

Access chamber at every 50 metre for LT cables shall be provided.

Feeder Pillar Panels will be provided to connect each Commercial outlets/ Individual Houses.

Feeder pillar panel will be mounted on a panel stand over the storm water drain. Photographs of

feeder pillar, road crossing and man holes are indicated in fig.15, 16,17.

Cut out shall be provided on both side of the storm water drain so that half cut pipe of 50mm dia

can be placed for incoming LT cables to feeder pillar and for outging cables of feeder pillar to

individual house hold connections.

From feeder pillar, connection to individual houses shall be through UG cables which will be taken

in 50mm dia HDPE pipe as indicated in the road sectional drawing.

Power supply to household/ commercials on other side of the road shall be from the same feeder

pillars thro 150mm dia. HDPE pipe. Road crossings with pavered blocks shall be provided as

provisions for laying of the cables across the road. Typical Laying arrangements are indicated in

diagram 14.

At every 100 M, road crossings shall be provided with 3 x150MM dia RCC hume pipes for HT, LT &

ICT cables & 1 x100MM dia RCC hume pipes for street light.



Figure -16: Layout sec. of 9M TO 12M wide Road (Typ)



Figure -17: Road crossing Figure -18: Feeder pillar Figure -19: Man hole



4.2.3 For Road Width Of 6m-8m Underground Pipe ducting for electrical & ICT cables on both side of the road are preferred. Laying

arrangement is indicated below.

Access chamber at every 50 metre for LT cables shall be provided.

Feeder pillar panels will be provided to connect each commercial outlets/ individual houses. Feeder

pillar panel will be mounted on a panel stand over the storm water drain.

Cut out shall be provided on both side of the storm water drain so that half cut pipe of 50mm dia

can be placed for incoming LT cables to feeder pillar and for outging cables of feeder pillar to

individual house hold connections.

From feeder pillar, connection to individual houses shall be through UG cables which will be taken

in 50mm dia HDPE pipe as indicated in the road sectional drawing.


pillars thro 150mm dia. HDPE pipe. Road crossings with pavered blocks shall be provided as

provisions for laying of the cables across the road. Typical Laying arrangements are indicated in

diagram 18.

At every 100 M, road crossings shall be provided with 3 x150MM dia RCC hume pipes for HT, LT &

ICT cables & 1 x100MM dia RCC hume pipes for street light.



Figure -20: Layout sec. of 8M wide road (Typ)



4.2.4 For Road Width Of 3m To 5m:

For roads under 3m to 8m, underground Pipe ducting for electrical & ICT cables on one side of the

road are preferred. Laying arrangement is indicated below. Access chamber at every 100 metre for

LT cables shall be provided.

Feeder pillar panels will be provided to connect each commercial outlets/ individual houses.

From feeder pillar, connection to individual houses shall be through UG cables which will be

taken in 50mm dia HDPE pipe as indicated in the road sectional drawing.


pillars through 50mm dia HDPE pipe. Road crossings with pavered blocks shall be provided as

provisions for laying of the cables across the road. Typical laying arrangements of pipes in 3M to

5M width road are indicated in diagram.

Figure -21: Layout sec. of 3M TO 5M wide Road (Typ)



4.3 Proposed HDPE Ducts for Underground Ducting: HDPE ducts are preferred for underground ducting instead of RCC ducts. Cost efficiency,

installation flexibility and other properties of HDPE ducts make them frontrunner than RCC

ducts.

Comparative study of HDPE & RCC ducts are indicated in fig 20 & 21

Figure -22: De-merits of RCC pipe

Figure -23: Merits of HDPE pipe



4.3.1 HDPE Ducts For Fibre Optics And CommunicationCable

Multiple Bundled PLB (Permanent solidly Lubricated Silicore) HDPE ducts provides pathways & the

ability to install fiber optic cables and communication cables for the Fiber optic network, all within the

same multichannel construction. The multiple channel enables to install OF cables for present needs

and a provision for futuristic use as when demand grows. Fig. 22 shows the view of multiple bundled

HDPE ducts.

Figure -24: Multiple bundled ICT duct

4.3.2 Comparative Analysis Of Different Types Of Pipes:Comparative analysis of HDPE, RCC,GI & PVC pipes are indicated in table 7

Property RCC Pipe Conventional HDPEPipe

HDPE power duct

ChemicalResistance

No resistance to mostalkalis & acids.

Good resistance toacids & alkalis

Good resistance toacids & alkalis

Soil Settlement Does not adjust itselfto soil settlement andcracks.

Flexible, Does notcrack

Flexible, Does notcrack

Transportation &Handling

Very heavy & brittle.Difficult to handle,chances of breakagesduring handling andtransportation. Costof transportation is

Easy handling. Costof transportation islow

Easy handling. Cost oftransportation is low

Suitable both for direct buried and direct

install applications.

Duct sizes 20MM to 50MM OD ; in 2 way,

3 way, 4 way, 5 way & 7 way.

Reduces consumption of man holes,

fittings and saves project management

cost.

Table 7 : Comparative analysis of different types of pipe



4.4 Recommendations: Based on above feasibility study, for underground ducting of overhead transmission line, directly

buried HDPE pipe ducting for LT transmission lines(415V), fibre optic or any other utility cables or

wires are recommended.

high.

Flexibility Rigid, cannot be bent. Flexible Flexible

Inner wall andLaying of Cable

Internal surface ofthe pipes are notsmooth. Hencechances of cabledamage duringpulling.

The internal &external surface ofthe pipes are smoothand free fromgrooving & otherdefects.

Smooth Silicore innerlayer or Ribbed forreduced PullingForce.

HDD Technique Not Possible. Cable installation byHDD MethodPossible.

Not Possible.

Salient Features Heat generated incable plus Dynamicload does notdeform or melt theRCC pipe.

Heat generated incable plus Dynamicload makes theHDPE pipe to deformor melt and makes itunsustainable forlonger product cyclelife.

The power ductshave three concentriclayers viz. outerlayer, middle layerand inner layer withribs.The unique design ofRibbed duct allowsfor a lower coefficientof friction for poweror copper cableduring laying . Hence,heat generated incable plus Dynamicload does not makethe HDPE power ductto deform or melt andmakes it sustainablefor longer productcycle life.

Method of laying HDD not Possible.Suitable for open cutmethod.

Suitable for open cutand HDD method.

Suitable for open cutand HDD method.

Cost per metre Rs.410/meter (as perDHARWAD PWDS.O.R 2016-2017)

Rs.620/meter (asper BWSSB S.O.R2016-2017)

Rs.1350/meter (asper price list ofDURA-LINE)

Service life The expected servicelife of RCC pipe is lessthan 10 years.

The expected servicelife of HDPE pipe is25 years.

The expected servicelife of HDPE powerducts not less than 50years.



Based on above cost implication chart and advantage and disadvantages of different underground

system, we recommend underground HDPE pipe ducting for LT cabling, ICT & telecommunication

cables, HT cables are directly buried in RCC C-pipe.

For maintenance purpose, access chamber at every 100m interval shall be provided.

Concrete paver blocks shall be used on footpaths and on-street parking areas on every roads. It will

give a good aesthetic view as compare to cast in situ concrete roads. With regards to maintenance, the

damaged blocks can be easily replaced where as in case of concrete roads the replacement of damaged

concrete is difficult.

Smart metering is not considered in this feasibility report since for application of smart metering, the

entire power supply distribution system has to be studied separately. Also, the same was discussed

with HESCOM. Since the implementation plan lacks the clarity, HDMC along with consultant team

should discuss with stake holders and line departments to close this.

4.5 Approach & Methodology, Studies, SurveysIncluding Data Collection, Analysis

Approach can be briefed as per the table below:

Table 8 : Approach adopted for project

Step Activity Detail

1 Base line study Overview of power demand.

Sources of power supply.

Collection of available data.

Review of existing DPRs and reports.

2 Data Analysis Type of underground system & type of pipe used forunderground 11kV overhead transmission line from reports ofHESCOM.

3 TechnologyEvaluation &

Feasibility ReportPreparation

Screening and Identification of type of ducting forunderground 415V power supply line based on techno-economic feasibility

Screening of technology on the basis of Modularity, scalability,Flexibility.

4 Policy finalization. Finalization of type of ducting based on feasibility as well asdiscussions with HDMC officials

Willingness survey to adapt to these new policies.

5 Preparation ofLayout, cost, and

Cost preparation for proposed underground ducting.



DPR Preparation of DPR.

6 Preparation ofTender

Preparation of request for proposal and tender documentsinviting quotations from vendors

7 Tender Finalisationand Award of

Contract

Award of contract after techno-economic analysis of thequotations

The methodology adopted is tabulated as below:

Table 9: Methodology

Sl.No Scope Methodology Remarks

Task 1: Kick off Meeting with Commissioner and stake holders Hubballi- Dharwad Smart City Limited.

Task 2: Reconnaissance Site Visit to the ABD area

1 Study of existing

overhead transmission

lines in the city

Assessment of data collected

General Reconnaissance Survey

Task 3: Analysis and evaluation of existing situation of power supply in the city and identification of relevant key

weaknesses and gaps

2 Study the current

scenario of power

outages, power demand,

existing overhead

transmission line based

on data available with

the HDMC, electricity

department as well as

from the report of

HESCOM.

Consultation with HDMC electricity

department and collection of all the relevant

data related to power supply in the city and

existing scenario.

Site visit and data collection

The data collection would be carried out in

terms of:

Present scenario of overhead transmission

lines- Already undergrounded or under

execution.

Existing R.O.W available in public streets.

Analysing gaps in the existing

system as well as the newly

framed plan.

Underground ducting are

planned to be implemented

along existing public streets

in the right-of-way after

survey and land use pattern

study.

Strengthen thetransmission anddistribution network tocater to the expectedgrowth in demand ofexisting as well as futureconsumers.

Task-4: Preparation of feasibility report



3 Studying the various

options for conversion of

415V overhead

transmission line to

underground in ABD

area.

Consultation with Special Officer and

electricity department as well as the

Commissioner, HDMC to freeze

concept plans before proceeding to

feasibility.

Feasibility options were outlined after

studying the existing scenario of

underground system in the city.

Focus on technical,

economical as well as

social feasibility.

Task-4: Preparation of Detailed Project Report

4 While structuring the

project, consultant shall

take into account factors

influencing techno-

commercial viability,

existing regulatory

scenario, awareness as

well as potential support

mechanisms for making

projects financially

viable.

The project viability model would be

formulated considering the long term

sustainability of effective underground

system.

The conceptual plan would be developed

based on the available data and study.

Approval would be taken on the conceptual

plan from Municipal Corporation

Task-5: Preparation of Tenders and selection of a competent bidder according to technical, economic

criteria as well as HDMC norms.

4.6 Best Case Studies for similar projects inIndia/World

Smart roads in Bangalore

Every urban road in Bangalore is an example of the chaos of traffic, broken footpaths, hanging cables,

clogged drains, overflowing sewage & haphazard street lights, transformers & telecom fixtures.

Temporary fixes with poor design & construction result in repeated digging & fixing of the same road

over & over again. In order to ensure good infrastructure and pedestrian safety in the city, the Tender

S.U.R.E(Specification for urban road execution) project was taken up to enable free flow of traffic. The

St Mark’s Road, residency road & Vittal Mallya Hospital Road, developed under the Phase 1 of

TenderSURE, were thrown open to the public for use. Now, water pipeline, sanitary line, electricity,



storm water drains and all other essential utilities have come under the footpath. Henceforth, agencies

should not find reasons to dig roads. Snapshot of a smart road is indicated in fig.23

Figure -25: Bangalore smart roads under tender S.U.R.E

Gift city, Gujarat

GIFTCL has proposed the Utility Tunnel to carry all the MEP Utility services such as electricity, water,

solid waste, district cooling supply pipes, etc to various blocks all over the city. It is built to avoid the

disruption caused by recurring construction, repair and upgrading of cables and pipes in direct burial

trenches. One of the greatest advantages is public safety. Tunnels also allow rapid access to all utilities

without having to dig access trenches or resort to confused and often inaccurate utility maps.

Snapshot of a utility tunnel is indicated in fig.24

Figure -26: Utility tunnel, Gift city, Gujarat

4.7 Referenced Studies and Surveys



The consultant team has collected existing data from site visits as well as consultation with residents,

HDMC officials etc.

4.8 SWOT Analysis

The SWOT analysis carried out for the city for the implementation of underground system in the Hubballi

ABD area is provided in the table below:

Table 10: SWOT Analysis

Strengths

Low AT &C losses within 18% in financialyear FY2017.

Launched 24 x 7 helpline for lodgingcustomer complaints and rectifying thesame within stipulated time.

Weaknesses

Reluctance of people and improper

infrastructure availability in terms of ROW

of roads.

Opportunities

City is under rapid development ofinfrastructure developments with SmartCity, BRTS and SBM schemes.

Proposed on going smart city initiatives.

Threats

Ignorance and long term behavioural

attitude of people.



5. Project Financials

5.1 Project Design

Depending on the features that need to be provided for underground ducting, the capital cost has beentabulated in Table-11

Table 11 : Capital cost of under grounding

Sl No Features Cost (Crores)

1

Road width of 3M-5M for 4KM

2.00Supply of HDPE pipe –415V, ICT & street light.

Pull chambers- 415V & ICT cables

Earth excavations on both side of road

Back filling on both side of road

2 Road width of 6M-8M for 19KM 14.00

Supply of HDPE pipe –415V, ICT & street light.




Supply of 150mm dia. Hume pipe-Road crossing

3

Road width of 9M-12M for 20KM

16.00






4 Road width of 14M-30M for 22KM 20.00




Pull chambers-11kV,415V & ICT cables

Earth excavations on both side of road & in median

Back filling on both side of road & in median


Road cutting and reinstatement 60.00

Total capital cost 112.00

O&M cost 6.00

Total Cost 118.00

Laying of cables for LT and ICT not included in price list. It would be ideal if the works are carried outin one go.

Shifting of the utility cables shall be done by utility provider. Hence, cost is not considered.

Cost of feeder pillars (connecting individual consumers) not considered.

Cost of cables connecting individual consumers from feeder pillars not considered.

Cost of pipes from feeder pillar to individual consumer not considered.

Regarding smart metering, the same was discussed with HESCOM. Since the implementation plan is

not clear, HDMC has to discuss with stake holders. Hence implementation and cost of smart metering

is not considered.

As the city is undergoing for 24x7 up-scaling and NMT, it is admissible, if the works of underground

ducting and up scaling projects are taken up at the same time. This not only synchronizes the works,

but will also reduce the additional burden of road reinstatement again and again along with lesser

disruption to traffic and local residents.



6. Statutory and LegalFramework

6.1 Legal And Regulatory Framework:

As the land belongs to corporation, no major legal aspects are noticed for the proposed underground

ducting in the ABD area. The construction activity can be on open bid system under the overall

supervision of SPV/PMC.

The following aspects may be considered:

Shifting of existing utility lines and its implication on the service delivery for the existing customers.

There is an ongoing project on 24X 7 water supply system for entire Hubbali municipal corporation

area & synchronizing the proposed 24X 7 up scaling work and this underground ducting work can

provide substantial savings in the capital cost in terms of road reinstatement works.

As underground ducting for low voltage is carried out only for ABD area, non ABD area service

implications may have to be addressed by the utility service providers.

It is also advisable if the underground ducting project are implemented along with the 24X7 water

supply upscaling project.

6.2 L0cal Regulatory Framework

As per the Environmental regulations in India, no Environmental clearance is not required for these

types of works.



7. Indicative Environmental &Social Impacts

7.1 Introduction:

In this Chapter potential impact on the environment from the proposed Underground ducting in the ABD

area are identified based on the nature and extent of various activities associated during construction and

after completion of the project. The proposed expansion activities will have impact of varying magnitude

on environmental components both beneficial (positive) and adverse (negative) impacts. Both these

(positive and negative) impacts are considered for the impact prediction studies.

7.2 Air quality:

7.2.1 Impacts during Construction for proposedproject:

The potential ambient air quality impacts arising from the proposed project would occur mainly during

construction phase. During construction, the project would have two major impacts on ambient air

quality due to increase in gaseous emissions by construction equipment’s and vehicles, and an increase

in dust by construction activities. Earth excavation work, foundation work, superstructure work, material

storage, transportation and handling of construction materials, and wind erosion are the major factors

that would produce a temporary, localized increase in SPM and RPM levels. The increased movement of

heavy vehicles carrying construction materials, operation of DG sets as standby power back up system

would generate gaseous emissions. However as DG sets are used as standby, the impacts are

insignificant. The degree of dust generated would depend on the soil compaction and moisture content of

the ground surface during construction. Dust and exhaust particulate emissions from equipment

operations would temporarily degrade air quality in the immediate construction zone. The increase in air

particulates would be minimized by the performance of the work. The construction contractor shall

visually monitor dust levels on the site during construction. Dust suppression needs to be instituted,

using water tankers mounted on tractors, sprinklers and other means as necessary.

7.2.2 Impacts during Operation

The Structures at the project site would be expected to have no impact on air quality during their normaloperation Impacts during Construction.



7.2.3 Mitigation Measures:The impact on the air quality due to the operation of construction machineries in the site is found to be

insignificant. However, the negative impacts created as a result of movement of construction vehicles

needs critical attention. For mitigation of these impacts, following measures are suggested:

Vehicles transporting construction materials prone to fugitive dust emissions should be covered.

Trucks carrying sand should be provided with tarpaulin sheets to cover the bed and sides of the trucks.

Idling of delivery trucks or other equipment should not be permitted during loading and unloading

All construction vehicles should comply with air emission standards and be maintained properly.

Dust suppression measures in addition to the traffic management should be followed on these roads

7.3 NOISE QUALITY

The potential source of noise associated in the construction includes the excavation, utility shifting,

movement of dumpers, transporting construction material, etc. Pumping of water seeping during

construction and transportation of muck material could also be the potential source for noise pollution.

Therefore, properly maintained machines and equipment’s should be used to minimize the impact of

noise on the surrounding environment. Trucks used for transportation of muck material shall be lined

with rubber or equivalent material that will minimize the noise generated during the loading and

unloading operation of muck materials.

7.3.1 Impacts during Construction

Construction activities normally result in temporary and short duration increase in noise level. The main

sources of noise during construction period include movement of vehicles for loading and unloading of

construction materials, fabrication, handling of equipment and materials, operation of concrete mixing

plants, generators, welding machines etc. The areas affected are those close to the site. Under the worst

case scenario, considered for prediction of noise levels during construction phase, it has been assumed

that all these equipment’s generate noise from a common point at an average noise level of 85 dB (A).

7.3.2 Impacts during OperationThe proposed structure at the project site is not expected to have any impact on Noise during their

normal operation.



7.3.3 Mitigation Measures Restriction on the usage of noise generating activities and traffic movement in the Residential

areas to day light hours to avoid high noise and sleep disturbance to residents during

construction phase.

Generator sets should be provided with noise shields around them.

Vehicles used for transportation of construction material should be well maintained.

7.4 WATER QUALITYThe proposed project will cause minimal effect on the water quality. As the workers employed in the

construction phase will be housed locally and will be few in number, there will not be substantial quantity

of waste water generated by them.

7.4.1 Mitigation Measures High pressure hose should be used for cleaning and dust suppression purposes.

Discharge of construction wastes to surface water bodies or ground water should not be

allowed during construction. It shall be diverted to nearest sewer.

During Construction period in rainy season, the water quality is likely to be affected due to the

construction work and loosening of topsoil. This is likely to increase the suspended solids in

the run – off during heavy precipitation. It is envisaged that the monsoon period will be

avoided for cutting and filling of earthwork.

7.5 LAND ENVIRONMENTThe environmental impacts on land environment have been classified primarily into two aspects namely

i.e., direct impact on soil and land in the area. Land environment in the area has potential for

contamination if there are waste water discharges directly on to the land and from impacts arising out of

solid waste discharge on to the land. The proposed project is of very small scale and the discharges on

land from construction activity are minimal.

The Project Management Consultants (PMC) will adopt good construction practices that will ensure the

environmental impacts of waste effluents generated on-site during construction will be minimized.

7.5.1 Impacts of Construction WastesThe generation of waste material is inevitable during the construction phase of the development. Waste is

generated at different stages of construction process. Waste during construction activity relates to

excessive cement mix or concrete left after work is over, rejection caused due to change in design or

wrong workmanship etc. Excavation of earth and rock generates muck. Other wastes include top soil,

clay, sand, and gravel. These are normally re-used as filler at the same site after completion of excavation

work. Construction waste is bulky and heavy and is mostly unsuitable for disposal by incineration or

composting.



7.5.2 Mitigation MeasuresThe solid waste generated during the construction phase is usually excavated earth material and

construction debris. Excavated earth material will be reused for backfilling; to fill up the low-lying areas

and whereas, topsoil will be reused for Landscaping / Greenbelt development purpose.

7.6 SOCIO ECONOMIC IMPACTS FOR PROPOSEDPROJECT

The project can improve the service of the Power supply system in the area. The positive impact of the

proposed activity is expected during the start-up of construction activities as well as through its life.

Besides the local population would be benefited from the 24x7 power supply, local dealers would be

benefited from contracts and supply of construction materials. The project will lead to better life styles.

This will lead to economic and social upliftment of the area.

7.7 POTENTIAL ENVIRONMENTAL IMPACT MATRIXThis methodology incorporates a list of project activities with a checklist of environmental components

that might be affected. Matrix method incorporates environmental conditions on one axis and proposed

actions on the other.

The impacts of each action on various environmental components are marked in a tabular format to

estimate the impacts which may be either qualitative, insignificant, high, adverse, beneficial or

quantitative by assessing a numerical score, but in the end there should be a grand total to signify the

magnitude of the impact. The activities discussed above are likely to affect the environment in varying

degrees. Relevant components of environment, which are likely to experience some impacts due to the

proposed project activities, have been identified.

Environmental parameters are broadly classified under three following groups considering the cause -

effect relationship:

Physical Environment

Biological Environment

Non Biophysical Components (NBP)

The parameters selected for impact identification are site activities and project specific. Differentparameters considered under the said groups are as follows:

Ambient Air Quality

Noise

Soil stability / erosion

Vegetation

Resource use

Health



Socio economic

The interaction between project activities and environmental parameters described above are shown in

the impact matrix in , the matrix points out each activity and its impact on specific environmental

parameters. This is a qualitative work and does not indicate quantitative impact. Some of the impacts are

temporary and localized and some impacts are short term and long term in the matrix.

The predicted impacts of the proposed project have been discussed - The environmental management

measures to reduce the adverse impacts are detailed in this Section.



Table 12 : Potentiail environmental impact matrix for Hubbali town

Project Activities Physical Biological Non Biophysical Components (NBP)

Air Quality NoiseSoilstability/ erosion

WaterQuality

Vegetation

Health(Individual/Community,Occupational)

Socio-economic(Population,CommunityInfrastructure,Employment)

City - Implementation Phase

Construction of underground ducting- Excavation,Erection, Fabrication, Finishing

ST, -ve ST, -ve Nil ST, -ve Nil Nil LT, +ve

Operation of undergroundducting

Nil Nil Nil Nil Nil LT, +ve LT, +ve

Note: ST – Short Term, LT – Long Term, +ve – Potential Positive Impact, -ve – Potential Negative Impact (requires mitigation measures)

Table 13 : Summary of environmental management plan

Parameters Potential AdverseEnvironmental Impacts

Proposed Mitigation Measures ResidualImpacts

Implementation Issues

Responsibilities Monitoring

Under- groundducting

Gaseous emissions byconstruction equipment’s andvehicles, and increase in dust byconstruction activities

Vehicles transporting construction

materials prone to fugitive dust

emissions should be covered.

All construction vehicles should comply

with air emission standards

Dust suppression measures in addition

to the traffic management should be

followed on these roads.

NotSignificant.

Contractor HDSCL / PMC

Noise pollution from movementof vehicles for loading andunloading of constructionmaterials, fabrication, handlingof equipment and materials,operation of concrete mixingplants, generators etc.

Restriction on the usage of noise

generating activities in the Residential

areas to day light hours.

Generator sets should be provided with

noise shields around them.

Vehicles used for transportation of

construction material should be well

maintained.

NotSignificant.


Ground water pollution frompercolation of constructionwaste water.

High pressure hose should be used for

cleaning and dust suppression purposes.

Discharge of construction wastes to

nearest sewer.

Avoid earthwork during monsoon

season

NotSignificant.




7.8 CONCLUSION Envisaged benefits proposed underground ducting in city of hubballi-dharwad are as below.

Mitigation measures for adverse impacts have also been attributed below. The proposed

project will have positive impacts on the socio-economic environment of the study area. The

project will provide direct and indirect employment for Skilled, and unskilled personnel,

hence providing a boost to the local economy.

24 x 7 power supply in the city along with minimum outages. When underground ducting

system are well mapped, they also allow rapid access to all utilities without having to dig

access trenches or resort to confused and often inaccurate utility maps.

One of the greatest benefit is public safety. Underground power lines, wheather in common or

in separate channel, prevent downed utility cables from blocking roads, thus speeding

emergency access after natural disasters.

Dust suppression measures in addition to the traffic management should be followed.

Waste water discharged from the construction activities shall be diverted to the nearest sewer.

Noise produced from vehicular movement and construction activities can be curbed to

minimal by making use of noise shields for machinery, carrying out maintenance of vehicles,

and by restricting construction activity to day time.

Regular monitoring of air, water and noise parameters shall be carried out to keep a check on

routine compliance of statutory requirements.

The proponent strongly believes in the concept of sustainable development and understands the impacts

as identified above from the proposed project and will take all measures to mitigate such negative

impacts and also lay emphasis on the implementation of the recommendations of the Environmental

Management Plan in true spirits.



8. Operating Framework

8.1 INDICATIVE PROJECT STRUCTURING

The project is headed by the Managing Director (MD) - Special Purpose Vehicle (SPV). The Project

Management Consultant (PMC) will manage the project in coordination with SPV and Hubballi-

Dharwad Municipal Corporation (HDMC). The technical aspects of the project will be handled by the

PMC. The project will be executed by the Contractor, who will be selected through the open tendering

process. Operation and Maintenance of the project will be carried out by HDMC/ private operator who

can carry out routine maintenance.

8.1.1 MilestonesThe major milestones and time allocated for the completion of each milestone is tabulated in Table 14below:

Table 14: Major Milestones and Time Allocated

Sl. No. Milestone Time Required(Months)

Cumulative Period( months)

1 Mobilisation 0.50 0.50



Sl. No. Milestone Time Required(Months)

Cumulative Period( months)

2 Site Visit 0.50 1.00

3 Design 2.00 3.00

4 Implementation 57.00 60.00

The capital costs and financial aspects of the project have been detailed in Chapter 6.

8.1.2 Operation and Maintenance

O&M has to be taken care of by the service providers; who will maintain the system as per the

required standards. As this is a major project impacting the aesthetics of the city, a fully dedicated

O&M strategy with dedicated staff committed to the implementation of the project is required. As

this project to be constructed under smart city funds; HDSCL will supervise the O&M.

8.2 RISKS AND MITIGATION

8.2.1 Risks Since a large capital will be invested on the construction and maintenance of the underground

ducting system, it is important to check that these are used properly

The ignorance among people may lead to non-usage of all these features.

Possibility of theft of man hole covers in economically backward areas.

8.2.2 Mitigation

Service provider should ensure proper operation and maintenance of the system.

Bringing awareness among citizens and educating them through social media, newspapers

and notices. This will prevent misuse.



9. WAY FORWARD ANDCONCLUSIONSBased on the above feasibility report, it is expected that, HDSCL accords their approval for

construction of underground ducting in the ABD area along with the conformation for all stake

holders associated with the project. This will also help the project to be implemented without any

land issues and the project can be expected to be completed as per the schedule provided in table 15.

Table 15 Tentative planning for next deliverables

Description Owner Tentative Timing

Approval of feasibility report HDSCL 31-08-2017

Submission of DPR PMC 16-10-2017

Approval of DPR HDSCL 8-11-2017

Submission of tenderdocuments

PMC 31-12-2017

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