We are ATINDRA CONTRUCTION PVT. LTD.one of the major moving forces in infrastructuredevelopment for projects like underground PipeLine for Oil, Gas or water distribution, Power linefor Electricity Supply, Optical Fiber Cable (OFC)network for telecommunication by providingservice that include Surveying, Planning,Engineering, Designing, laying of PIPES / CABLE/ DUCTS, providing FRT Trench and other similarspecialization by jack pushing method, Trenchless Technology and / or Conventional Methodin all types of Soil Strata under the Surface and/ or under River Beds as well as Rocky Terrain.

For providing Services in underground laying ofPipes / Ducts / Cables, we have jack pushingmachine and Horizontal Directional Drilling (HDD)Machine of various capacities, Tools & Trackles,Spare Parts supported by expertise andexperience, manpower, outdoor teams of qualifiedengineers and backed by financial capabilitiesto handle the most complex and difficult workassignments.

Profile

Basic Information

ATINDRA CONSTRUCTION PVT. LTD.

147/A – Dakshinee Housing Society1st Floor, on EM Bye Pass, Near Dhapa CrossingMetropolitan Bus StopKolkata – 700 105

+91 33 40638150

info@atindraconstruction.comwww.atindraconstruction.com

Atindra Construction Pvt. Ltd.Dangadighia, Post Off: BandipurP.O.: Khardah, North 24 ParganasKolkata-700119, West Bengal.

Project Work :i) Turnkey Projects for Power/Gas/Water Pipelinesii) Turnkey Projects for Telecom Networkingiii) HDD Trench less Installation of utilities (Ducts, Cables, Pipelines)iV) FRT Team for Telecom Networking

PRIVATE LTD.

i) Mr. Ram Prasad Sarafii) Mr. Bhaskar Saraf

•Mr. Ram Prasad Saraf ( 9903995601 )•Mr. Bhaskar Saraf ( 9903014105 )•Mr. Sunil Modi ( 98310 95376 / 9903995612)

AALCA4486G

19360426038

Name of the company

Registered Office Address

Phone No.

E-mail Address & Web side

Godown Address

Area of business

Constitution of firm

Name of Directors

Contact Persons

Permanent Account No. (PAN)

VAT Registration No.

Basic Information

Service Tax Registration No.

Central Sales Tax Regn No.

W.B. Professional Tax Regn./Enrolment Number

EPF Code Number

ESI Code Number

Central Excise Regn. Number

TAN No.

Bankers

AALCA4486GSD001

19360426232

191001261685 / ECN 1047370

WBCAL0042054000

410003332440001002

AALCA4486GSD001

CALA15993F

ICICI BankBidhanagar BranchSaltlake, Kolkata

Key Persons

1234567

Ram Prasad SarafBhaskar SarafAshok MittalRaghunath DasSunil ModiHarsh PoddarPrabitra Kr. Biswas

DirectorDirectorGeneral ManagerProject ManagerCommercial ManagerFinance ControllerAsst. Manager Marketing

Sl. No. Name Designation

AccountantTechnical TeamMaintenance TeamSite Co-ordinatorSite - SupervisorOffice StaffBilling SectionOperator & TrackerSplicerDriverStore Keeper

Other Team Members

4536

1018

535

835

3

Category No of Employee

ClientsKolkata Municipal Corporation

Kolkata Metropolitan Development Authority

CESC Ltd.

Rites

Vodafone

Aircel

Dishnet Wireless Ltd.

Indian Oil Corporation Ltd

Alcatel Lucent Telecom ltd

Telesonic Network Ltd

Reliance Communications

Power Grid Corporation of India Limited

Bharat Sanchar Nigam Ltd

Videsh Sanchar Nigam Limited

Tata Tele Services Ltd

Bharti Airtel Limited

Railtel

Idea Cellular Ltd.

TATA DOCOMO

Calcutta Telephone Department

Reliance JIO Infocomm Ltd.

Himachal Futuristic Communications Ltd

Reliance Corporate IT Park Ltd.

Services

Jointing Of HDPE Pipes by Hydraulic ButtFusion Welding Machine.

We provide complete GPRS solutions

Preparation/Installation of Manhole / SplicingChambers.

Blowing of Optical Fibre Cable (OFC) into the laidHDPE Pipes / PLB Ducts

Jointing, Splicing, Termination etc. of Cables.

Complete OFC connectivity solutions for indoor &outdoor applications.

Supply of HDFE Pipes / Ducts, PVC Pipes / Ducts ofvarious dimensions as pervarious Speifications andstandards in line with customers’ requirements.

Erection & Commissioning of GBT & Roof Top Tower.

Laying of Pipes / Ducts and cables byJak Pushing Method, Horizontal Directional Drilling(HDD) (Trenchless Method) and / orby Conventional Method of Pipeline forGas, CESC, Power Cables, Water Lines,OFC Network for Telecom Service providers.

Straightening of MS Pipe

Derusting, Brushing, Cleaning, the external orInternal surface of pipes with sand Blasting andProviding coats of anticorrosive and Non Toxic Point

Manufacturing Iron & Steel

Real Estate & Property Selling

Atindra BanquetRaikva3A, Ram Mohan ullick Garden Lane6th Floor, Kolkata – 700010

Atindra Banquet34A, Picnic Garden Lane,1st Floor, Kolkata - 700019

Other Services

Technology

HDD Technology

We are in HDD(Horizontal Directional Drilling) Technology. This is a Trench lessTechnology. It is a relatively new and revolutionary way of creating and maintainingunderground infrastructure without any extensive digging. The practice of thistechnology will avoid demolition of building, dislocation of traffic, disruptionof subsurface installation like Telecom cables, Power Cables, Railway SignalingCable, Sewerage Pipes, Gas & Water pipes etc. In a nut sell, the Trench lessTechnology is a novel approach for subsurface installation without affecting thenormal life and without novel approachfor subsurface installation without affectingthe normal life and without causing any significant damage to surface properties.Such a technology cannot but lead to higher economy in construction and evenhigher societal comfort.

Since the beginning of human civilization as seen in Mohenjodaro and Harappaand elsewhere in the world, digging ofopen trenches as drains for water supply,sanitation, channels for irrigation etc. was a common practice which is continuedeven today for laying of almost all underground utility like water supply, seweragepipelines, underground power andcommunication cables, petroleum and gas pipelines etc. cutting of highways and busy roads in the cities is a common occurrencein India almost every day which a commuter is made to suffer in silence.

Digging open trenches is a simple, Labour-intensive method which did not pose anyproblem until recently. Cities withgrowing population have road congestion, vehiculartraffic jams, increasing emission and pollution problems, accidents etc. Adding tothese if streets are dug for pipes and cables either new or part of renewals/repairs,it will aggravate situation further. If it happens to be a rainy season or involvesdewatering, we will have the poor commuters suffer for many days till the work iscompleted. In India, we still do not value much for the “Social Costs” involved insuch delays.

In many of the developed countries like Japan, Germany, USA, Holland, UK andmany European countries, even in Singapore and Australia, trench less technology(“no-dif” or “minimum diffing”) method has been widely used for the last two orthree decades. It has to make its application in populous countries like India and

China. Although no comprehensive code of practice on trench less technologyhas been published in any of these countries so far, the method is very wellperfected. Equipment is manufactured to codes of practice. Even propergeotechnical investigations and detection equipment are ready available. Thecost of doing the job by trench less technology is more than for the conventionalopen trench digging method in India, where labour is cheaper and readilyavailable. If the “social coat” is worked out realistically and added to this cost,then we will find that the cost of doing the job by trench less technology would be cutless or comparable. Singapore experience shows that The years of trench lesstechnology is cheaper if not comparable to open cut method. Environmental narrowpolitical boundaries and this is one of the foremost challenges for the 21st Centuryfor the very survival of human, animal and all plan life on the globe. Compared totraditional open cut method widely used in India and in underdeveloped countries,trench less technology accrues numerous economical, ecological and environmentalbenefits to the social which needs to be appreciated.

Technology

The Process of HDD Technology

Technology

Drilling

The start and target pits are produced and remotely controlled drill tool is advancedunderground. High pressure suspension consisting of bentonite and water mixed ina proportion to meet the physical parameter of the ground is emitted from the drillhead with rotates through the ground forming a pilot hole or tunnel. Large soils arepressed against the walls of the tunnel and finer particles of earth are transportedalong the tunnel with the aid of the environmentally friendly drilling suspension tothe start pit.

for the target pit. The position and the depth at which the drill head is located canbe determined with the help of locating device called receiver / detector used ondrill tool and measured above fround bya receiver.

The drill system is powered independently. When it comes to drilling site whereavailability of space is not sufficient, the drill machine and the power unit can beparked independently from each other. This is absolutely necessary e.g. in case ofcongested streets, river crossing etc…

Pulling

The remotely controlled drill tool reaches the target pit with complete accuracy andis then replaced with a relevant reamer for the job. Thus, the pilot hole is widenedto enable the simultaneous installation of the product.

Installation of the product

The product (pipe/cable) is attached directly behind the reamer. The bentonitesuspension helps in smooth installation without damaging the product. This drillingsuspension has got a swelling property and acts as lubricant and thus minimizes thef riction in the tunnel.

Technology

Facilities of HDD Technology

Preservation of streets.

No change of the natural soil structure.

Minimum soil exchange

Clean & Silent.

Independent of weather conditions

Trench less method is at lease 80% faster than manual method. Installationdepth isno cost factor.

This is a gentle technology, which uses drilling suspension & replaces thebrutality ofopen cut trenching. The process avoids the rippling of the streets &pavements & other high value surfaces & reduces costs, causes less mess,less noise & no trafficcongestion.

No excavation work can be done for 4 months due to monsoon and back filling isseldom efficient. Once the soil mechanics is disturbed, it is disturbed forever.

No long waiting period for getting permission to dig up roads. In certain cases itmay not even be granted at all.

No high corporation tax for open trenching.

No traffic congestion, inconvenience to people, pollution & rising social cost.

No damage to other buried utilities.

Technology

Problem of Open Trenching

With the cheap labour available in India, it iscontinuing with open trench method of laying.The concept of social costs involved inopen trench construction Vs.trench lessconstruction has now started gatheringattention of planners & the Government. Thesocial costs which can be avoided by adoptingthe technology & the benefits which can bepassed on to society is clarified below:

Traffic:

Traffic Hindrance Traffic obtrusion Accidents Extra costs in providing diversions, their maintenance etc.

Environment:

Damage to green belts, tress Traffic Congestion – Environmental pollution due to dust & smoke Noise pollution Ground & surface water pollution Loss in productivity Fault service in Energy, Communication & Power lines Existing utility being damaged by other authorities through open trenching Increased consumption of Petrol, Oil & Lubricants.

Technology

Rock-Drilling Systems

Technology

GSM Mobile Network

“ANY TIME—ANY WHERE CONNECTIVITY “a dream came truethrough mobile network.

Wide spread mobile networks across world have made itpossible to establish either voice or data contact even whenwe are on move.

Mobile communication has broken all barriers of oldconventional telephony system.

We have 02 standards for mobile network:

GSM ---global system for mobile communication---based on TDMA ( time division multiplex access )

CDMA---code division multiplex access

We will go through GSM concepts in this tutorial.

GSM network has following elements:

a)b)c)d)e)f)g)h)

MSC—mobile switch centerBSC---base station controllerBTS---base transceiverHLR---home location registerVLR---visitor location registerAUC---authentication centerEIR---equipment identity registerOSS---operation & support systems

Technology

Optical Fiber Cable works (OFC)

ATINDRA Steel Company is a fast growing telecommunication company, activelyinvolved in different telecommunication and infrastructure projects. We provideturnkey solutions in all activities of Outside Plant Works. Our services start rightfrom design through construction and commissioning of networks.

Scope of Optical Fiber Cable Works includes the following:

Design, Row permissions, Trenching and associated Civil works, HorizontalDirectional Drilling & Boring works, Supply, Installation & Commissioning of :-

OFC (Optical Fiber Cable):

ATINDRA Steel Company is a company based at Kolkata who is providing thecomplete OFC connectivity solutions for indoor & outdoor applications whichincludes:

i) HDPE, GI, RCC, DWC & PVC Pipes

ii) Cables (OF & Cu), Splice Closures, FMS, Optical network equipment, Electronic route markers

iii) RCC markers, Chambers, Manholes, Hand holes, Splicing of Cables, Ear thing and Link Testing, As-builts and Operation & Maintenance of OFC equipments & Cables.

1) Duct OFC Laying

2) Aerial OFC Laying

3) C Fusion Splicing

4) FODP installation

Technology

Optical Fiber Cable works (OFC)

DSL modems ASMI-52, ASMI-61 installed by OFC team.

FODP installed by the OFC team forcompleting OFC ring

OADM (XDM-100) MOC Hub, installed byOFC team in the MOC Hub

Termination Box

Technology

Fiber Optic Cable Blowers

The Fiber Optic Cable Blower offers what you’d expect from Condux, and more.More speed and more push force monitoring for example. After all, the faster andsafer that fiber is installed in the duct, the more money in your pocket.

We can Install 300 feet of fiber optic cable per minute (90 m/min) with the newCondux Fiber Optic Cable Blower. Condux engineers designed the speed in bymaking the cable travel at the same speed as the air! A missile is always attachedto the front of the cable. Compressed air propels the missile and cable throughthe airtight sealed duct in a matter of seconds. And, because air flow and tractordrive speed can be adjusted, you can install fiber at the rate which best suits anyapplication.

Compared to other models on the market, the Condux Fiber Optic Cable Blowerfeatures longer tractor feed grip area for less stress on the cable. Condux incorporates a hydraulic cylinder on the tractor feed to better control down pressure.

cylinder mounts on the tractor feed and improved counter rollers. The new tracksreduce noise, vibration, allow better cable grip and provide a better pushing force.

A refined speed and distance counter with LCDread-out, as well as convenient hydraulic andpneumatic controls, come standard with theCondux blower. An optional electronic controlsystem is available to monitor the cable andtractor drive speeds. This system will shut downthe blower if cable slippage, an over-speedsituation, or a cable stoppage is detected.When you compare features and quality you’llsee why the Condux Fiber Optic Cable Bloweris better.

The Condux Fiber Optic Cable Blower now offerssofter tracks, collapsible legs, improved hydraulic

Technology

Fiber Optic Cable Blowers

The collapsible legs allow a lower profile for transporting and storing the blower andthe flexibility to set up the Fiber Optic Cable Blower at a 45 degree angle for easierconnection to the duct.

The hydraulic cylinder mounts stabilize the upper tractor feed by keeping it squarewhen it is lowered into position, thus preventing excess wear on the tracks.

The new counter rollers, along with reinforced joints, help improve counter accuracy.

LW Fiber Optic Cable Blower: While Condux’s new LW Fiber Optic Cable Bloweroperates on the same principles as the HD model, there are several differences.The new LW Fiber Optic Cable Blower is compact and lightweight, making it ideallysuited for your most difficult job sites and “last mile” fiber installations. An updateddesign has increased portability and made operation easier than ever. In addition,Condux’s patented traction control system shuts down the blower when problemswith cable slippage or duct blockage are detected, adding safety to every job andpreventing costly cable damage.

By years of fiber blowing experience, the LW Fiber Optic Cable Blower is designedfor the installation of fiber optic cables with diameters from 0.23" (5.8 mm) to 1.13"(28.7 mm) into innerduct from 0.98" (25 mm) outer diameter to 1.97" (50.0 mm)outer diameter. Installation speeds approaching 300 ft/min (91.5 m/min) are possible.

Versatility

The Condux Fiber Optic Cable Blower operates efficiently with most commoncombinations of cable and innerduct sizes. The Fiber Optic Cable Blower isdesigned for the installation of fiber optic cables with diameters from 0.23"(5.8 mm) to 1.13" (28.7 mm) into innerduct from 0.98" (25 mm) outer diameterto 1.97" (50.0 mm) outer diameter. The correct size cable seals, feed tube andventuri must be determined for the cable being installed. Also necessary are thecorrect size innerduct seals, clamps and carrier for the innerduct being occupied.

Technology

Fiber Optic Cable Blowers

Use the charts on page 108 to determine the correct size components for yourspecific cable and innerduct installation project. Use both the size and colorreference to ensure the correct selection each time the Cable Blower is used.

In-Building Solutions

A few years ago, it was very simple to install IT network in building. All one hadto do was join two telecommunication entities together. In a campus LAN cablingsystem there are three distinct cable segments: horizontal, intra-building backboneand inter-building backbone. Horizontal cabling connects the work areas or desktopsto the floor distributor. Intra-building backbone cabling aggregates traffic fromdesktops and connects floor distributors to building distributors.

ATINDRA offers supply and installation of active and passive equipments -

Structured cable in building

OFC cable in building

Wi-Fi LAN

Information Outlet

Hardware & network equipment

Technology

Fiber Splicing

A fiber splice is a permanent or semi permanent joint between two fibers. These aretypically used to create long optical links or in situations where frequent connectionand disconnection are not needed . In making and evaluating such splices, one musttake into account the geometrical differences in the two fibers, fiber misalignments atthe joint, and the mechanical strength of the splice. This section first addresses generalsplicing methods and then examines the factors contributing to loss when splicingsingle-mode fibers.

Splicing Techniques:-

Fiber splicing techniques include the fusion splice, the V-groove mechanical spice,and the elastic-tube splice50-59. The first technique yields a permanent joint,whereas the other two types of splices can be disassembled if necessary.

Fusion splices are made by thermally bonding together prepared fiber ends, aspictured. In this method, the fiber ends are first realigned and butted together.This is done either in a grooved fiber holder or under a microscope withmicromanipulator. The butt joint is then heated with an electric arc or a laserpulse so that the fiber ends are momentarily melted and hence bonded together.This technique can produce very low splice losses (typically averaging less than0.06 db). However, care must be exercised in this technique, since surfacedamage due to handling, surface defect growth created during heating, andresidual stresses induced near the joint as a result of changes in chemicalcomposition arising from the material melting can produce a weak splice 60, 61.

In the V-groove splice technique,the prepared fiber ends are firstbutted together in a V-shapedgroove, they are then bondedtogether with an adhesive orare held in place by means ofa cover plate. The V-shapedchannel can either a groovedsilicon, plastic, ceramic, ormetal substrate .The splice lossin this method depends strongly

Technology

Fiber Optic Cable Blowers

the hole diameter so that the elastic material exerts a symmetrical force on the fiber.This symmetry feature allows an accurate and automatic alignment of the axes of thetwo fibers to be joined. A wide range of fiber diameters can be inserted into the elastictube. Thus, the fibers to be spliced do not have to be equal in diameter, since eachfiber moves into position independently relative to the tube axis.

Splicing Single- Mode Fibers

As is the case in multimode fibers, in single- mode fibers the lateral (axial) offsetmisalignment presents the most serious loss. This loss depends on the shape of thepropagating mode. For Gaussian-shaped beams the loss between identical fibers is 62

L SM; lat = -10log {exp [ - (d/w )] 2}

Where the spot size W is the mode-field radius defined and d is the lateral displacementshown above. Since the spot size is only a few micrometers in single-mode fibers, lowoss coupling requires a very high degree of mechanical precision in the axial dimension.

on the fiber size (outsidedimension and core-diametervariations ) and eccentricity(the position of the core relativeto the centre of the fiber).

The elastic – tube splice showncross-section ally is a uniquedevice that automatically performs lateral,longitudinal, and angular alignment. It splicesmultimode fibers to give losses in the samerange as commercial fusion splices, but much lessequipment and skill are needed .The splicemechanism is basically a tube made of anelastic material. The central hole diameter isslightly smaller than that of the fiber to be splicedand is tapered on each end for easy fiberinsertion. When a fiber is inserted, it expands

Technology

Optical Fiber Connectors

A wide variety of optical fiber connectors has evolved for numerous differentapplications. Their uses range from simple single- channel fiber-to-fiber connectorsin a benign location to multi channel connectors used in harsh military fieldenvironments. Some of principal requirements of a good connectors designare as follows:-

Low coupling losses. The connector assembly must maintain stringentalignment.

Tolerances to assure low mating losses. These low losses must not changesignificantly during operation or after numerous connects and disconnects.

Interchangeability. Connectors of the same type must be compatible fromone Manufacturer to another.

Ease of assembly. A service technician should readily be able to install theconnector in a field environment; that is, in a location other than theconnector factory. The connector loss should also be fairly insensitive to theassemble skill Of the technician.

Low environmental sensitivity. Condition such as temperature, dust, andmoisture Should have a small effect on connector-loss variations.

Low-cost and reliable construction. The connector must have a precisionsuitable to the application, but its cost must not be a major factor in thefiber system.

Ease of connection. Generally, one should be able to mate and demate theconnector simple, by hand.

Connector Types

Connectors are available in designs that screw on, twist on, or snap into place. Themost commonly used connectors are the twist-on and snap-on desing63-73. Theseinclude both single – channel and multichannel assemblies for cable –to-cable and

for cable –to – circuit card connections. The basic coupling mechanisms used inthese connectors belong to either the butt-joint or the expanded-beam classes.

Butt-joint connectors employ a metal, ceramic, or molded-plastic ferrule for eachfiber and a precision sleeve into which the ferrule fit. The fiber is epoxied into aprecision hole which has been drilled into the ferrule. The mechanical challenges offerrule connectors include maintaining both the dimensions of the hole diameter andits position relative to the ferrule outer surface.

Technology

Optical Fiber Connectors

An expanded-beam connector, illustrated in Fig., employs lenses on the ends of thefibers. These lenses either collimate the light emerging from the transmitting fiber,or focus the expanded beam onto the core of the receiving fiber. The fiber – to –ens distance is equal to the focal length of the lens. The advantage of this schemeis that, since the beam is collimated, separation of the fiber ends may take placewithin the connector. Thus, the connector is less dependent on lateral alignments.In addition, optical processing elements, such as beam splitters and switches, caneasily be inserted into the expanded beam between the fiber ends.

The Figures shows two popularbutt-joint alignment designsusedin both multimode andsingle-mode fiber systems.These are the straight-sleeveand the tapered-sleeve (orbiconical) mechanisms. In thestraight-sleeve connector, thelength of the sleeve and aguide ring on the ferrulesdetermine the end separationof the fibers. The biconicalconnector uses a taperedsleeve to accept and guidetapered ferrules. Again, thesleeve length and the guiderings maintain a given fiber-end separation.

Technology

OTDR Trace

Figure below shows a typical trace as seen on the display screenof an OTDR. The scale of the vertical axis is logarithmic and measures the returning (back-reflected) signal in decibels. Thehorizontal axis denotes the distance between the instrument andthe measurement point in the fiber. In addition to the trace, anOTDR such as the one shown in Fig. also can place a number nextto an event on the display and give a list of these numbers and theircorresponding measurement information in a table below the trace.

The backscattered waveform has four distinct features:

A large initial pulse resultingfrom Fresnel reflection at theinput end of the fiber.

A long decaying tail resultingfrom Rayleigh scattering inthe reverse direction as theinput pulse travels along thefiber.

Abrupt shifts in the curvecaused by optical loss atjoints or connectors in thefiber line.

Positive spikes arising fromFresnel reflection at the farend of the fiber, at fiber joints,and at fiber imperfections.

Fresnel reflection and Rayleighscattering principally produce

the backscattered light. Fresnel reflection occurs when light enters a mediumhaving a different index of refraction. For a glass-air interface, when light ofpower Po is incident perpendicular to the interface, the refiected power Prefis When n Fiber and n air are the refractive indices of the fiber core and air,respectively. A perfect fiber end reflects about 4 percent of the power incidenton it. However, since fiber ends generally are not polished perfectly andperpendicularly to the fiber axis, the reflected power tends to be much lowerthan the maximum possible value. In particular, this is the case if an anle-polished connector (APC) is used.

The detection and measurement accuracy of an event depend on the signal-to-noise ratio (SNR) that an OTDR can achieve at that point. This is definedas the ratio between the back-reflected signal and the noise level. The SNRdepends on factors such as the OTDR pulse width, how often the OTDR samplesthe signal, and the distance to the measurement point.

Two important performance parameters of an OTDR are dynamic range andmeasurement range. Dynamic range is defined as the difference between theinitial backscatter power level at the front connector and the noise level peakat the far end of the fiber. It is expressed in decibels of one-way fiber loss.Dynamic range provides information on the maximum fiber loss that can bemeasured and denotes the time required to measure a given fiber loss. A basiclimitation of an OTDR is the tradeoff between dynamic range and event locationresolution.

For high spatial resolution, the pulse width has to be as small as possible. However,this reduces the signal-to-noise ratio and thus lowers the dynamic range. Typicaldistance resolution values range from 8 cm for a 10-ns pulse to 5 m for a 50 uspulse.

Measurement range deals with how far away an OTDR can identity events in thelink, such as splice points, connection points, or fiber breaks. The maximum rangeR max depends on the fiber attenuation a and on the pulse width, that is, on thedynamic range DOTDR. If the attenuation is given in dB/km, then the maximumrange in km is.

Technology

OTDR Trace

Technology

Manual Trenching (Open Trench)

Optical fiber infrastructure built-up & maintenance there after is the most difficultpart of telecom network. OFC is laid across country for domestic services & acrosssea bed for international connectivity. We will discuss OFC laying and constructionpractices for domestic connectivity.

Prime components used for OFC Infrastructure :

a) b) c) d) e)

f) g) h)

HDPE couplersOFC cable drums of 4 / 2 kms eachEarthing pit materialJoint chambersHDPE (high density poly ethylene) ducts …outer diameter 40mm / innerdiameter 33mm.Joint closuresRoute markersCable blowing machines

Technology

Manual Trenching (Open Trench)

Construction process:

HDPE ducts are laid at a depth of 1.5 mtrs from earth surface. Number of ductsis decided by business requirements…generally\we lay 02 ducts across countryside / 06 ducts with in city limits

If depth is less than 1.5 mtrs than to provide protection to these ducts, civilengineering concepts are used i.e. RCC/PCC protection, GI pipe protection.

Ducts are available in lengths of 1kms, therefore after every 1 kms HDPEcouplers are used to join 02 ducts

RCC joint chambers are installed after every 04 kms…these joint pits is buriedinside ground at a depth of 1mtr…HDPE ducts need to pass through these jointpits.

Earthing pits are fabricated after every 8 kms across route…these pits are laidalong with joint chambers.

RCC route markers are installed after every 250mtrs…these route markers areused for route identification in future for maintenance point of view…routemarkers are of 1.2 mtrs in length…0.8 mtrs is inside ground and visible portionis 0.4mtrs with company name…we can see route markers of various operatorsacross highways

Optical cable is in drum of 4kms each…this is armored cable (having steeljacket) which prevents from rodent cuts.Optical cable is blown inside one of HDPE duct with help from cable blowing machine.

Cable is blown from joint chambers to joint chambers across route length.

Technology

Manual Trenching (Open Trench)

This picture shows river crossing through pedestrianpath-way, GI pipeis clamped and 2 NOS of HDPE

ducts are pulled inside this pipe.

Jointing after every 4 kmstakes place and cable jointis kept inside joint closures.these joint closures are keptinside joint chambers. Jointclosures are connectedto earth pits also after every8kms, this prevents electricshocks during maintenancework (as cable is armored)with in city limits as cable islaid across foot path /roads / lanes, it is notpossible to use armoredcable…we use unarmoredcable in cities.

Technology

FTTX Solutions

In-Building Solutions

A few years ago, it was very simple to install IT network in building. All one had todo was join two telecommunication entities together. In a campus LAN cablingsystem there are three distinct cable segments: horizontal, intra-building backboneand inter-building backbone. Horizontal cabling connects the work areas ordesktops to the floor distributor. Intra-building backbone cabling aggregatestraffic from desktops and connects floor distributors to building distributors.

ATINDRA offers supply and installation of active and passive equipments -

Structured cable in building OFC cable in building Wi-Fi LAN Information Outlet Hardware & network equipment

Fiber To The Home

You can now add high speed broadband access to that list of necessities, for itis has indeed become the fourth utility. To a great extent, optical fibre initiatedand continues to feed users’ hunger for bandwidth, creating a market that is increasingly demanding high-speed broadband, and is willing to pay for it.Currently, there are many broadband applications that people want, and wanttoday: video-on-demand, high-definition TV, gaming, home security, telecommuting,and movie downloads, home education, video-conferencing, sophisticatedtelephone service and more.

There are numerous methods of delivering broadband services, including: DSL,cable, fixed wireless and satellite with each displaying their set of pros and cons.However, each has its own Achilles heal meaning that, at present, the no de factolast mile technology has yet emerged leaving the field still wide open. And, it isinto this environment that the latest ‘pretender’ to the broadband access throne hasentered: ‘Gigabit Ethernet’

Technology

FTTX SolutionsWe offer turnkey solution for Fiber to the X (home, curb, and building).

We offer supply & installation for FTTX

Splice Closure Branch Closure Termination boxes FDMS Installation

Features and Benefits of FTTH

Can be installed simply and quickly Reduces upfront investment Suitable for a wide range of environments and buildings Allows non-disruptive network modification, configuration and maintenance

Multi-fiber counts possible Specially designed for challenging environments Lower costs per additional customer Reduced number of splices between the Point of Presence (POP) and end user

Reduced installation costs Cheaper closures and connectivity products Reduced maintenance costs Reduced fiber costs in the short and long term Elimination of unused fibers in new networks Pay-as-you-grow’ capabilities Reduced access charges

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Equipments

We have 17 Horizontal Directional Driling Machines

GD 380 B-L - 83 Tones (Goodeng) - 1 Pc

GD 380 A - 40 Tones (Goodeng) - 2 Pcs

ZT-25 (Drillto) - 2 Pcs

D35x45A (Vermeer) - 1 Pcs

D24x40A (Vermeer) - 2 Pcs

D24X40 (Vermeer) - 2 Pcs

D16X20 (Vermeer) - 2 Pcs

D16X20A(Vermeer) - 2 Pcs

DDW-11A (TXS) - 2 Pcs

ZT-10 (Drillto) - 1 Pcs

Jack Pushing machine with sufficient Jacks.Locator System - F5, F2, Eclipse, Mark-III, Mark-IV, Mark-VTRANSMITTER (Red/Black/Yellow/Violet) - DigitrakRADIO DETECTION Detector/Locator - 2 PcsSplicing machines - 10 PcsOTDR Machines Along with LSPM - 8 PcsGPRS Machines - 2 PcsButt Fusion Welding MachineMud Mixing Unit along with Water Tank - 20 PcsPump and GeneratorMachines Container - 20 PcsTrucks - 45 PcsBlowing machine with Compressor - 2 PcsWIRE LINE System BlackSufficient quantity of other Tools & tackles.

Other Machines:

Completed Works

We have successfully completed some of our challenging jobs by HorizontalDirectional Drilling (HDD) Method in & around Kolkata region. The details are asfollows:-

1.

Laying of 20" CS/MS Pipe for the length of 181 mtrs. for Gail India Ltdat KG Basin, AP

Laying of 20" CS/MS Pipe for the length of 180 mtrs. for Gail India Ltdat KG Basin, AP

Laying of 8" CS/MS Pipe for the length of 1094 mtrs. for Gail India Ltdat Bangalore - Kolar (NH-4), Karnataka

Laying of 18" CS/MS Pipe for the length of 270 mtrs. for Gail India Ltdat Draksharama, AP

Laying of 24" & 6" CS/MS Pipe for the length of 254 mtrs. for Gail IndiaLtd at PRP KG Basin, AP

Laying of 18"" CS/MS Pipe for the length of 370 mtrs. for HindustanPetroleum Corpn. Ltd at Korkunda, AP

"Laying of 700 mm dia (I.D.) M.S. pipe conduits by Pipe-Jackingtechnique/Micro Tunneling technique including laying of 450 mm dia(ID) M.S. water main within the conduit across and underneath RailwayTrack adjacent to Padmapukur Railway Station on Shalimar SantragachiRailway Track Of S. E. Railway for the length of 155 Mtrs. for KolkataMetropolitan Development Authority

1.

Laying of 300 mm dia (ID) / 323 mm dia (OD) MS Pipe conduit 150 min length and 350 mm dia MS Pipe conduit a for the length of 165 mtrsas Distribution Pipe by HDD Technique across G T Roadin Bally areafor Kolkata Metropolitan Development Authority

"Laying of 600 mm dia (ID) MS Pipe conduit 155m in length across andunderneath the Belgharia Expressway near Tilottama Bhavan by HDDTechnique for Kolkata Metropolitan Development Authority

Underground Pipe Pushing work below Railway track for laying of800mm dia Water Main from Dhapa to Patuli Pumping Station nearBaghajatin level crossing under JnNURM for Kolkata MunicipalCorporation for the length of 155 Mtrs.

" Laying of Water Supply Main of MS Conduit 350 mm dia (ID) as carrierpipe across and underneath the railway truck near Airport Station onP.K. Gugh Road by H.D.D technique with 500 mm dia (ID) MS CasingPipe as a part of Primary Feeder Main in a length of 180 Mtrs. forKolkata Metropolitan Development Authority

"Laying of 500 mm dia (ID) M.S. Pipe Conduit 80 Mtrs.in length by HDDtechnique across and underneath the Vivekananda Road in Bally areafor Kolkata Metropolitan Development Authority

"Laying of 250 mm dia (ID) M.S. Pipe Conduit 115 Mtrs. In length byHDD technique across and underneath the Jessore Road for KolkataMetropolitan Development Authority"

Laying of 450mm to 110 mm dia HDPE pipes by HDD techinique atdifferent places at Kolkata for CESC Limited

Completed Works

“Underground pipe laying work below Railway track for laying of 800mm diawater main from Dhapa to Patuli Pumping Station near Baghajatin level crossing,near Mast no 10/7 & 10/8 for Kolkata Municipal Corporation” in Kolkata, WestBengal, India.

Underground Pipe Laying work for laying of 6” OD, 10”OD & 16”OD M.S.Pipes atAndhra Pradesh for Gail India Limited.

Deployed FRT Team for Fiber Rectification in Kolkata region for idea cellular ltd

Laying of 450mm dia Pipe by Microtunneling method for the developmentof filter water supply in adjoining area of Kolkata for Kolkata MunicipalCorporation for the length of 855.00 Mtrs.

Laying of 250mm dia Pipe by Microtunneling method at United Bank ofIndia Complex of Kolkata for Kolkata Municipal Corporation for the lengthof 555 Mtrs.

Laying of 315mm dia Pipe by Microtunneling method at KakurgachiJunction of Kolkata for Kolkata Municipal Corporation for the length of385 Mtrs.

Extension of 315mm dia HDPE Pipe by HDD method for drawl of waterin the Milan Mela Ground, Kolkata for the 215 Mtrs. In length for KolkataMetropolitan Development Authority

Laying of 450mm dia Pipe by Microtunneling method near Mani Squarefor Kolkata Metropolitan Development Authority for the length of 255Mtrs.

Completed Works

Contact

Atindra Tower147A, Dakshinee Housing Society,

1st Floor, on E.M.ByePassNear Dhapa CrossingMetropolitan Bus Stop

Kolkata - 700 105

West Bengal, India

+91 9903014105www.atindraconstruction.com

info@atindraconstruction.com