Telecom Egypt- MSAN Project Plan

MSAN Project Plan

Supervised by: Professor Dr. Hamdy ElwanyPrepared by: Mina Saad Tony Nabil

Table of Contents1PROJECT CHARTER32PROJECT DESCRIPTION32.1Customer Surveys32.1.1According to topography32.1.2According to customers needs42.2Planning42.2.1Routes Planning42.2.2Choosing Locations42.2.3Power Supply42.2.4Designing Network42.2.5Calculating Materials Quantities (Work Sheet)42.3Procurement52.3.1MSAN Cabinets52.3.2Cables52.3.3Equipment and tools52.4Technical specifications for the constructions52.4.1Technical specifications for the construction and installation of reinforced concrete manholes of different models52.4.2Excavation, backfilling transport and drop62.4.3Technical specifications of trenching for pipes installation72.5Technical specifications for the installations82.5.1Technical specifications for the installation of pipes82.5.2Technical specifications of cable installation into pipes92.5.3Technical specifications for the installation of MSAN distribution cabinets172.6Technical specification for testing and delivery172.6.1Connect the MSAN cabinet with the proper power supply.173Project Scope184Deliverables185Work Breakdown Structure (WBS)18Appendix A : Pulling Cables into Conduits and Ducts19Tension Limitation Using Wire Grip20Appendix B : Testing and Delivery Sheets23Appendix C : Manhole Specification24

PROJECT CHARTERMSAN (Multiple Service Access Networks) is a project that will be held by Telecom Egypt. TE will provide 160 MSAN Cabinets in Alexandria through 2015, with estimated budget 100 million Egyptian pounds. It aims at serving 160,000 new customers, offering them a high quality voice and higher data rates by using fiber cables.

PROJECT DESCRIPTION MSAN project aims at raising the efficiency of the access network in Egypt, through replacing the copper cables by fiber optic cables and replacing the traditional switching systems with NGN (Next Generation Networks) platform. This project creates an easily scalable access network making it easier to expand the network to provide wired communication services for uncovered areas and increasing the number of customers in currently served areas. The following network diagram illustrates the network topology after adding MSAN units:

Figure 21

NGN

MSAN

Customer SurveysCustomers surveys will be classified into two major points. According to topographyIn this step, our teams will collect information about customers quantity and their topographic distribution over different geographic zones. This step is necessary for the planning, because it gathers information about the number of buildings, population capacity, average age and educational level in every place to be covered in the MSAN project. This will help to optimize the network and choose the best fitting to implement.According to customers needsIn this step, our teams will collect data about customers needs to accomplish the highest customer satisfaction. In this survey, customers are asked if they prefer to have data services or only voice. They may be asked also, about their preferred buckets and plans. Moreover, they will have the opportunity to give suggestions for any new services they want to be provided.

The last step is analyzing the data collected to help taking decisions according to standards.PlanningRoutes PlanningThe first step is calibrating existing routes. Then, choosing best routes. After that, new routes should be allocated. These steps are done through maps to put initial preview to the routes available while execution in further steps.Routes should be chosen to be of minimum length and away from other infrastructure (water, gas, electricity). Also, the route should avoid passing water channels and rail roads as possible.Choosing LocationsAfter the confirmation of routes is finished, locations for the MSAN cabinets should be selected depending on the customer capacity and convenience.Power SupplyThe electric power supply source availability should be checked at the locations chosen in the previous step, to know how the connection will be done according to the contract with the Electricity Distribution Company.Designing NetworkThis step includes all technical details including the connections redundancy and network connections, Bandwidth for each cabinet, transmission network necessary upgrades and preparation. It also includes IPs and dialing numbers allocation.Calculating Materials Quantities (Work Sheet)Table 21serialItemunitQuantity

1Fiber Cablesm320000

2Power Cables (6 mm)m16000

3Copper Cables (Jelly Field 0.4 mm)m160000

4MSAN CabinetLS160

5JointsLS800

6ConnectorsLS16000

7CouplersLS4800

8Pipes and Sub-Ductsm320000

9Secured Manhole with CoverLS160

10Digging Permitsm160000

11MSAN Cabinet BaseLS160

12Sandm38000

ProcurementMSAN CabinetsBid Awarding is done to choose among suppliers, whom provide the best facilities at least prices.CablesThere are different types of cables needed for the project :Copper cables ( for rising the quality of the secondary network) , Power Cables ( to provide necessary power supply for the cabinet) and Fiber Cables ( needed for the main access network). Cables are bought through Bid Awarding.Equipment and toolsThere are many assessing tools and equipment that are needed for the project and usually there are bought directly upon needs. This item includes: joints, connectors, couplers, measuring devices and jointing devices.

Technical specifications for the constructionsTechnical specifications for the construction and installation of reinforced concrete manholes of different modelsBackground Information

A manhole (alternatively utility hole, cable chamber, maintenance hole, inspection chamber, access chamber, sewer hole or confined space) is the top opening to an underground utility vault used to house an access point for making connections or performing maintenance for buried cables.

Creating and manufacturing different manholes models which are H.H model I and HH model II (C.H) and M.H models (I.II.III.IV) as well as base of cabinets and models required by the working conditions.

Manholes with all the models and the base of cabinets must be prefabricated and cast into a single site is equipped with all the services of lighting and water and suitable places to garner raw materials in manufacturing and technical specifications.

Pour the manholes are using formwork (chop) either wooden or metal especially for manholes.Technical specifications of manholes:Table 22Man Hole typeLength (m)Width (m)Height (m)Total drilling (cube in m3)

I3.42.42.6521.624

II4.82.42.6530.528

III5.92.82.6543.3778

IV6.932.6554.855

HHII2.91.91.659.09

CB11.7.7

SpeciallyAs designed

Refer to Appendix C for technical specifications of CH Type manholeAdapter Plates for conduits in manhole

Figure 22Excavation, backfilling transport and dropConcrete Manhole we Location should be:- Not at roads intersections.- The site is chosen to be suitable at the mechanical drop projector.

Figure 23

Technical specifications of trenching for pipes installation The preparation and convening of the formats with neighborhoods and towns councils and various facilities for obtaining permits implementation.Deciding routing drilling and boring work for these tracks to make sure that execution paths of the longitudinal and the implementation drilling path in case of non-availability of maps from the information center.Excavation and backfilling specification for installation of soil pipes in all soil types (except rocky soil):1. Space between the top layer and streets surface not less than 90 cm, and 70 cm from the surface of the pavement.1. The bottom ditch digging must be horizontal.1. Soft sand layer is placed between the two pipes.1. Cover the last layer pipes with soft sand and free of any impurities in the thickness of 20 cm with water spray with manual backfilling .1. Complete the backfill above the sand layer to output soft drilling thickness 30 cm after placing warning signs.1. Complete filling up the soil to street level mechanically. Excavation and backfilling specification for the installation of pipes in the rocky soil :1. Space between the top layer and streets surface not less than 90 cm, 80 cm from the surface of the pavement.1. Soft sand layer is put down the pipe thickness not less than 10 cm.1. Soft sand layer is placed between two layers pipes1. Cover the last layer pipes with soft sand and free from any impurity with thickness of 50 cm with water spray with manual backfilling then warning signs are placed.1. Complete filling up the street level using fine sand.Technical specifications for the installationsTechnical specifications for the installation of pipesThe technician must check all pipes and fittings before installation to ensure its integrity and absence of defects caused by transport (cracks, broken parts, unstable rubber gasket).Pipes are installed using a wooden hammer and liquid inorganic soap diluted in water with ratio 1: 21 for easy installation and making sure that the rubber gasket is not removed during installation.Access to the pipes on the slots of the manholes and up to 3 cm from the end of the sandy bang.Use the semi-circle files and saws during installation if needed.Use plastic sheets to cover the ends of pipes during installation to prevent water leaks and dirt during installation.Install pipe breaks (Spacer) every 1.5 meters to connect piping to each other and maintain their horizontal orientation.Use 45 degree /110 mm huts for the main pipes, also use 90degree /110 mm huts for the entering the base of the cabinets.The order of pipes into trench excavation under the approved diagrams (Conduit System Diagram) as shown below.

Figure 24

The tube cleaning and calibration:1. After the completion of the reclamation and site cleanup of the waste product of drilling is cleaning up all the pipes between the primary and secondary manholes and cabinets using the brush and compressed air, etc.1. The calibration of tubes is done by using cylindrical wooden body (mandrill) and the length of mandrill of 30 cm and 9 cm for diameter tracks straight and in the case of curves is used mandrill length 20 cm, 9 cm diameter to insure the safety fittings pipes and to be suitable for pulling cables.1. Must insure that there are no Splits in the pipe fittings.1. Extend FLOSS nylon its thickness not less than 4 mm in all installed pipes with length 10 meters into the manhole and linked to the (Sealing plug).Technical specifications of cable installation into pipesMake sure the spool number that will be drawn in terms of length, capacity and contract number printed on it if exists.The number of pipe that we will pull the cable in it.The pull direction in the direction of the arrow indicated on the pulley in one direction for Exchange.Implementation engineer take the necessary precautions to secure work area for pedestrians and vehicles.Implementation engineer using a proper connection between the loader and pulley cable to prevent cable form damage during the pulling operation if any impediment appears.Cable grease is a special paint for painting cable to be easy dragging it into the pipe.It is necessary to protect cable as you pull the cable at sharp curves or places in manholes using metal curves dedicated for this purpose inside manholes.The tensile strength must be with in the allowed limit.Installation of seals for pipes filled with cables (Sealing Ring).The installation of seals for pipes which are not preoccupied with cables (Sealing Plug).The installation of seals for manholes slots which are not installed pipes with the (Sealing Cup).Pulling fiber cables in sub-ducts. Refer to Appendix ASAFETY PRECAUTIONSCable Handling PrecautionsFiber optic cable is sensitive to excessive pulling, bending, and crush forces. Any such damage may alter the cables characteristics to the extent that the cable section may have to be replaced. To ensure all specificationsare met, consult the specific cable specification sheet for the cable you are installing.Corning Cable Systems cable specification sheets are available which list the maximum tensile load for various cable types. The maximum pulling tension for stranded loose tube cable and ribbon cable is 600 lb(2,700 Newtons).

Figure 25Corning Cable Systems cable specification sheets also list the minimum cable bend radius both Loaded (during installation) and Installed (after installation). If these sheets are not available on the job-site, the following formulas may be used to determine general guidelines for installing Corning Cable Systems fiber optic cable:To arrive at a working bend radius for cable installation, multiply 15 times (15x) the cable outside diameter.Example:Cable Diameter = 0.46 in (11.8 mm)15 x 0.46 in = 6.9 in (177 mm)Minimum Working Bend Radius = 6.9 in (17.7 cm)To find the minimum diameter requirement for pull wheels or rollers, simply double the minimum working bend radius.

Whenever unreeled cable is placed on the pavement or surface above a manhole, provide barricades or other means of preventing vehicular or pedestrian traffic through the area.Fiber optic cable which passes through manholes containing petroleum-based waste will require special protection. Some petroleum products will deteriorate the cables polyethylene sheath. Consult your company practices regarding manholes and petroleum-based waste for specific instructions on how to remove the petroleum. Install inner duct that is impervious to future petroleum exposure.At the completion of a days installation, protect bare cable ends by placing a cable cap on the end of the cable, followed by several wraps of tape around each cap. This will assist the moisture-resisting material in Corning Cable Systems loose-tube cable in preventing water ingress due to long-term exposure to moisture.If a cap is not available, a few wraps of tape placed on the tip of the cable should prevent water from entering the cable.

PLANNING AND PREPARATION

Figure 26It is recommended that an outside plant engineer conduct a survey of the cable route. Manholes and ducts should be inspected to determine the optimum splice point locations and duct assignments. Identify potential problems with inner duct and cable placement at this time.Rodding or slugging may be required to verify duct suitability and accurate length. Cable cut length is especially critical when installing factory-connectorized cables.

Inspect manholes in which cables will be spliced and make plans for closure and cable slack racking. Be sure to consider the accessibility of manholes to splicing vehicles.Fiber optic cable must be protected in intermediate manholes. Carefully choose racking space so that it will provide maximum protection for the cable and maintain its minimum bend radius.Based upon the cable route survey and the equipment / manpower resources available, develop a cable pull plan. Inspect potential reel and winch locations for their suitability and make plans for installation techniques such as back feeding or use of intermediate assist winches.Factors to consider in developing the pull plan include changes in elevation and the locations of bends and offsets.For ease of installation, pull cables from higher elevation manholes to lower ones, whenever possible. Bends describe pronounced turns in the routing of a duct system. Offsets in a duct system are more gradual variations from the ideal, straight path of a duct section. Offsets can impose greatly increased pulling tension. For example, a three foot offset in a 10-foot run of duct can add an estimated 120 lb of tension to a pull. To minimize the effect of bends and offsets, begin such pulls at the end of the inner duct section nearest the difficult area.

INSTALLATION EQUIPMENT AND ACCESSORIES INNER DUCT

Inner duct is a way to subdivide the duct and to provide for future cable pulls. Three 1.25 inch inside diameter (I.D.) inner ducts can usually be pulled into a 4-inch duct. Proper size and installation of the inner duct is critical for ease of cable installation.Inner duct is available in ribbed, corrugated, and smooth-walled constructions of polyethylene or PVC material. Corning Cable Systems fiber optic cable is compatible with all major brands of inner duct. Consult your companys practices for inner duct specifications.Fill ratios are calculated by comparing the area of an inner diameter cross-section of the inner duct to the outer diameter cross-section area of the fiber optic cable. Larger diameter inner ducts (which result in smaller fill ratios) will normally reduce pulling tension.Multiple cables may be pulled simultaneously into one inner duct. Pulling a new fiber optic cable over an existing one is not recommended due to the possibility of entanglement.Should an inner duct become twisted during installation, the twisting (helixing) can dramatically increase pulling tension during cable installation. Corrugated inner duct has less memory than other types of inner duct, and may tend to lay flatter in the duct.

Inner duct often stretches during installation. Allowance must be made for the relaxation of this stretch by planning for extra slack to be pulled into manholes.At points where inner duct will be continuous through a manhole, allow sufficient slack so that the inner duct may be secured on the manhole racks and maintain the cables minimum bend radius.At points where the inner duct is not continuous through a manhole, some provision must be made to provide a section to cover the cable in the manhole during and after placement. This may be accomplished through one of the following methods:a. Couplers which splice inner duct sections together are available from most inner duct manufacturers. Do not use couplers which reduce the inside diameter of the inner duct.b. Split duct may be applied to the cable during rackingc. A section of inner duct which has an inside diameter greater than the outside diameter of the installed inner duct may be used in a sleeve operation. This section of inner duct must be slid over the inner duct coming from the entrance duct BEFORE the pull-line is installed. larger inner duct must be long enough to reach from the entrance duct to the exit duct while passing around the periphery of the manhole where it will be racked, plus an additional 9 ft (3 m) on each end which will be inside the duct bank after racking.

After placement, all inner duct must be capped or plugged to prevent moisture or foreign matter from entering until the cable installation starts.Various types of pull-line have been used successfully with fiber optic cable. Pull-lines can be of either a round or flat cross section. Selection of a pull-line will depend upon the length and conditions of the pull. Small diameter pull-line may have a tendency to cut inner duct when under tension.Available pull-line materials include wire rope, polypropylene, and aramid yarn. For pulls using winches, materials with low elasticity such as wire rope and aramid yarn can minimize surge induced fluctuation in pull line tension. Consult your companys standard practices with regards to pull-line materials.Some inner duct is available with preinstalled pull tape or line. Otherwise, pull-line can be installed by rodding or blowing. Lubrication of the pull-line may be necessary for ease of installation or to prevent the line from cutting the inner duct.Corning Cable Systems recommends the use of a factory or field-installed wire mesh pulling grip and swivel during cable pulls. Pulling grips provide effective coupling of pulling loads to the jacket, aramid yarn, and central member of fiber optic cables.The use of a swivel between the pull-line and pulling grip is required to prevent the pull-line from imparting a twist to the cable. A swivel that contains ball-bearings is recommended to prevent binding at high tensions.Cable lubricant is recommended for most fiber optic cable pulls as a means of lowering pulling tension. Short hand-pulls may not require lubricant. Considerations in choosing a lubricant are material compatibility, drying time, temperature performance, and handling characteristics.

As noted in the cable precautions, cable lubricants must be compatible with the fiber optic cables outer sheath. Refer to the lubricant manufacturers specifications. Use of incompatible liquids, such as liquid detergent, for a lubricant can cause long term sheath damage.Lubricant should be applied according to the manufacturers recommendations. Some lubricant vendors recommend an applicator to coat the cable as it enters the inner duct, others suggest distributing lubricant throughout the inner duct by pulling a swab through the inner duct as part of the pull-line placement. Pumps or gravity feed devices can also be used to inject lubricant into the inner duct.Additional lubricant should be added before bends and known severe offsets and sections with uphill elevation changes.Fiber optic cable is subject to damage if the cables specified maximum tensile force is exceeded. Except for short runs or hand-pulls, tension must be monitored. Refer to cable specification sheets for maximum tension. Exceeding the specified maximum tension will void the warranty of the cable product.The use of a winch with a calibrated maximum tension is an acceptable procedure. The control device on such winches can be hydraulic or in the form of a slip clutch. Such winches should be calibrated frequently.The use of a breakaway link (swivel) can be used to ensure that the maximum tension of the cable is not exceeded. Breakaway links react to tension at the pulling eye and should be used as a fail-safe rather than a primary means of monitoring tension.A dynamometer or in-line tensiometer may also be used to monitor tension in the pull-line near the winch. This device must be visible to the winch operator or used to control the winch. Special winches are available that monitor the tension remotely at the pulling eye via a wire in the pull-line. Such winches may also provide a record of the tension during pulls.All pulling equipment and hardware which will contact the cable during installation must maintain the cables minimum bend radius. Such equipment includes sheaves, capstans, bending shoes, and quadrant blocks designed for use with fiber optic cable.Situations that require use of a radius-maintaining device are encountered at feed and pull manholes, at bends, and where entrance and exit ducts in a manhole are offset.INSTALLATION TECHNIQUESVarious techniques are available to ease the installation of long lengths of fiber optic cable. All have been used extensively in the field.The length of cable that can be pulled in one operation will vary with duct conditions, the equipment used, pulling technique selected, and the skill of the craftsmen. Normally, a short pull [less than 3000 ft (913 m)] with two or fewer 90-degrees bends may be pulled without an intermediate-assist winch or hand assistance.Use of multiple winches requires compatible pulling equipment and careful coordination of winch speeds. Consult the equipment manufacturers instructions for necessary details.Longer cable pulls, or those involving many bends, may also use center-pull and back feeding techniques.

In a center-pull operation, set up the cable reel near the center of the duct run to be pulled. Pull the cable in one direction to the next designated splice point.Unreel the remaining cable in a figure-eight configuration.Flip over the figure-eight so that the pulling-eye end of the cable is on top. This can be easily accomplished by three installers, one at each end of the eight, and one at the center.Pull the exposed end of the cable in the opposite direction to complete the pull. Hand tending of the cable paying off from the figure-eight is normally required.Back feeding may be used to provide a series of shorter, lower-tension pulls in one direction. When back feeding, pull enough cable out of the manhole to reach the intended end point of the pull, plus racking and splicing slack. This cable should be figure-eighted as it emerges from the manhole.Flip over the figure-eight so that the pulling-eye end of the cable is on top. This can be easily accomplished by three installers, one at each end of the eight, and one at the center.After the pulling eye is connected to the next section of the pull-line, feed the cable by hand back into the manhole and pull it to its next destination. The cable may be pulled directly from a figure-eight by a winch, provided the capstan or sheave used at the entry manhole ensures sufficient bend radius. Hand tending of cable paying off from figure-eighted is normally required.INSTALLATION PROCEDUREThis section will provide an overview of an installation operation. As noted earlier, our companys practices and local conditions may take precedence over these guidelines.Prepare the manholes in the duct section where the cable is to be placed:a. Place barricadesb. Monitor gasc. Establish ventilationd. Pump watere. Inspect ladders, racks, and duct banksIf not already in place, install the inner duct and pull-line. Tie down exposed inner duct in manholes to prevent dragging of inner duct during pulling operations. Relocate existing utilities if necessary.

Set up winches, monitoring devices, lubrication points, bend radius devices (sheaves, capstans, bending shoes, etc.), and means of communications along the route prescribed in the pull plan.

Locate the cable reels at the appropriate points of the route.Remove reel lagging and retrieve the cable data sheets (if present) from each reel for your companys as-built records.Inspect the reels and equipment on which they are mounted for any bolts, nails or other protrusions that could damage the cable as it is paid off.

Ensure that the reel trailer or jack stands are stable, and that the reel may turn freely without binding. The reel must be level to allow proper pay off of cable.Align the reel at the feed hole so that the cable can be routed from the top of the reel into the duct bank in as straight a path as possible.If not previously installed, attach the pulling grip to the cable, and attach the grip to a swivel. The swivel should be securely fastened to the pull-line. See the pull-line manufacturers recommendations for appropriate knots.A warning marker (colored tape or similar material) may be attached to the pull-line several feet in front of the pulling grip to alert observers at manholes that the cable is approaching.

Apply cable lubricant as required.

Verify that communication lines are functional and crews are in place at feed, pull, and intermediate manholes.

Start the pull at a slow speed, passing the pull-line and cable over and around the capstans, sheaves, and other devices required to maintain the minimum bend radius. Begin tension monitoring with a calibrated device as soon as tension is applied to the cable. If necessary, aid the cable feed by turning the reel by hand. Ensure that the cable is fed only as fast as the pull-line is moving. Back tension on the reel will prevent too much cable being fed off.Once the cable has moved a minimum of 5 ft (1.3 m) into the innerduct, accelerate the pull smoothly to its intended speed [50-100 ft (15.2-30.4 m) per minute is desirable].

Continue the pull at a steady rate. If it is necessary to stop the pull at any point, the winch operator should stop the pull, but NOT release the tension unless instructed to do so. Pulls can be easily resumed if tension is maintained on the pull-line and cable.The cable should be visually observed during the following situations:a. When it passes through any intermediate manhole in which innerduct continuity is broken.b. Where use of a radius-maintaining device is required due to a bend or offset of entrance and exit ducts.c. At intermediate-assist winches.Ensure that the bend radius is maintained, and that the cable is properly routed through the sheaves, capstans, bending shoes, etc.. Stop the pull if the cable is misrouted, and correct the problem before resuming. If the inner duct is being pulled along with the cable, stop the pull and secure the inner duct with temporary cable ties.When the cable end reaches a back feed point or splice point manhole, pull the cable out of the hole using a setup similar to that at the feed hole to maintain bend radius.After passing around the winch, the cable slack should be figure-eighted in an area where it will not be subject to damage by personnel or traffic. Follow the procedure in Step 4.9 for flipping the figure-eight so that the pulling grip end of the cable will be on top before the pull is resumed.At splice points, pull sufficient slack (typically 40 ft [10 m] of slack from the lip of the manhole) to reach the intended splicing location, plus enough slack to permit closure preparation and splicing.Verify and record the distance markings printed on the cable for as-built documentation.Once the cable is pulled into place and appropriate slack is available at splice or termination points, begin securing all the inner duct to cable racks on the manhole walls. Begin racking at the center manhole and proceed to the end manholes. Maintain the cables specific minimum bend radius.At points where the inner duct is continuous through the manhole, push the inner duct and cable to the rack and secure with appropriate cable ties. Maintain the cables minimum bend radius.If the inner duct is not continuous, rack the split duct, or the larger outside diameter section of inner duct before the pull.Store coiled splicing slack in the splicing manholes so that it is not likely to be damaged during later work in the manhole. If possible, store the slack in an enclosure designed to store splicing slack and a splice closure. Place an end cap on any bare cable ends to prevent moisture or dirt intrusion.Fiber optic warning signs should be placed on all inner duct containing fiber optic cable. Warning signs can help prevent damage resulting from the cable being mistaken for something else.

Technical specifications for Optical Distribution Frames (ODFs) and splices

Figure 27 Optical Distribution Frame Fiber Termination Blocks with MPO Connectors Fiber termination blocks (FTBs) with MPO connectors provide MPO connect ability on the rear of the block for easy connection of MPO fiber cables. The termination portion of the fiber block utilizes sliding adapter packs to gain easy access to standard connectors and adapters on the front of the block and provides a location for standard patch cord connections. The block is internally cabled at the factory for easy installation and occupies one position of the frame. Before ordering, determine the block orientation needed as the blocks may be ordered with a left orientation (mounts on the left side of the frame) or a right orientation (mounts on the right side of the frame).

Technical specifications for the installation of MSAN distribution cabinets

Figure 28Selection of the location of the cabinet in the first third of the cabinet service area boundaries.

Installation locates the cabinet away from any outside influences.Cabinet is installed on a concrete base with 4 screws and connect the ground wire from ground point cabinet to the ground with a depth of not less than 60 cm and not more than 25 ohms resistance to ground.The cabinet shall be measured horizontally and vertically.The installation is brought and rubber for cable entry and exit openings to ensure no moisture or rodent inside the cabinet body and maintain the integrity of the cables.The installation and fixation of the cables in and out on the windows of the cabinet under the cabinet according to its capacity with the approved planning.

Figure 29

Technical specification for testing and deliveryConnect the MSAN cabinet with the proper power supply.

Make the electrical maps each cable separately so that the maps are approved by competent implementation management.

Check the network from MDF to the points of distribution to customers and ascertain the following:1. Arrange the cables and revise the cable labeling.1. Assure that the cabinet is fixed well.1. Make the proper tests using OTDR device, Migger device and Bico test device.For Calibration sheets. Refer to Appendix B

Project ScopeThe project will include digging paths, adding manholes, laying pipes and sub ducts, pulling fiber optic cables, importing 160 MSAN units, preparing civil structure for the cabinets, fixing the MSAN units, connecting MSAN units using copper cables to the secondary network cabinets, applying necessary upgrades and additions for the existing transmission equipment.The project will exclude digging for secondary network, raising the efficiency of existing distribution points, maintenance of existing copper cables, the upgrading of the NGN main core switches.The project will be finished by the end of the year 2015. Deliverables Surveys Procurement Civil Work Installation Commissioning and Testing Setting in service

Work Breakdown Structure (WBS)Plotted and attached.

Appendices

Appendix A : Pulling Cables into Conduits and Ducts

Cable Is Pulled Into Conduits And Ducts, Above Or Below Ground, By A Winch Attached To The Cable By Means Of:

(A) Pulling EyesThe Pulling Eye Is A Steel Eye Fastened Directly To The Cable End Either By Fitting The Copper Or Aluminum Conductors Into A Socket Or Lacing The Conductors Around The Log Of The Eye.

(B) Cable GripsCables Of Moderate Size And Length Are Pulled Into Conduits And Ducts By Using A Cable Grip. The Grip Consists Of An Endless Wire Woven To Form A Basket. This Is Slipped Over The End Of A Cable And By Nature Of Its Design, Increases Its Grip On The Cable As The Tension Increases.

STRAIGHT DUCT

Tension Needed To Pull CableT1 = Lwf (1)WhereT1 = Tension Required To Pull Cable In PoundsL= Length Of Cable In Feet W = Weight Of Cable In Pounds Per Foot F = Coefficient Of Friction

Tension Limitation Using Pulling EyeTm = AnsmWhere Tm = Maximum Allowable Pulling Tension Of Each Cable In PoundsA = Cross-Sectional Area Of Conductor (Kc Mil)N = Number Of Conductors In Multi-Conductorcable (Assuming Same Size For All Conductors); If Cables Are Singleconductor N = 1. Sm = Maximum Allowable Pulling Stress (Lb/MCM)

Tension Limitation Using Cable GripTm = 3.1416 Kmt (D-T)WhereT = Sheath Or Jacket Thickness (In)D = Sheath Or Jacket Overall Diameter (In)Km = Maximum Allowable Pulling Stress (Lb/In)

Tension Limitation Using Wire GripFor Lead-Sheathed Cables:Tm= 4700 (D-- T)(3)Wheretm= Maximum Allowable Pull In PoundsT =Thickness Of Lead Sheath In InchesD= Outside Diameter Of Cable In Inches For Non-Loaded Cables:Maximum Allowable Pull = 1000 Pounds

If Equation (1) Is Less Than Equation (2) Or (3) (Type Of Attachment) ,Then The Length Of Cable Considered Is Within Safe Working Limits For Pulling Into Ducts. If, However, Equation (1) Is Greater Than Equation (2) Or (3), Then The Length Of Cable Considered Exceeds The Safe Working Limits.

CURVED DUCTIn Pulling Cable Around A Bend, An Additional Force Of Friction Is Introducedby The Pressure Of The Cable Against The Side Of The Duct, Especially If Thelength Of Run Preceding The Bend Is Large Or The Radius Of The Bend Is Relatively Small.Tension Needed To Pull CableT3= T1 (Efa)(4)WhereT2 = Pulling Tension At End Of Curved Section In PoundsT1= Pulling Tension At End Of Straight Run Before CurvedSection (Equation 1) In Pounds' . E = Naperian Logarithm Base = 2.718 F = Coefficient Of FrictionA = Angle Of Bend In Radians (1 Radian = 57.3 Degrees) Maximum Tension At BendsLead-Sheathed Cables 400 X Radius Of Curvature In Feet, In PoundsRubber - And Thermoplastic-Insulated Cables 200 X Radius Of Curvature In Feet, In Pounds

CALCULATION SEQUENCE

Consider A Duct With (A) A Straight Section, (B) Then A Carved Section, (C) Followed By A Straight Section.

Pulling Tension At End Of (A)T1 = Lwf (1)From (1)WhereL1 = Length Of Straight Section Before Bend.

Table 61Design Coefficient Of Friction

Duct MaterialPolyethylene Cable Sheath

No LubricantB Or C LubricantDLubricant

Concrete0.600.420.25

Fiber0.470.440.25

Fiber Cement0.500.500.25

Plastic0.430.380.18

Calculate The Pulling Tension For Both Directions Of Pulling. The Calculated Tension For Either Direction Must Not Exceed Either (1) The Cable Strength Or (2) 6500 Pounds (29 Kilo Newton [KN]).

Figure 61

Table 62-Cable Pulling Tension Work SheetSegment LocationStraight SectionCurved SectionTotal Tension

To + w(F X x H) =TFTo/(wXr) = To/ wrT/(wXr) = T/ wr

12009.90.72001590,1590

20.73015809.9404.05.89.94023002300

323009.90.715033403340

Read from Alignment Chart

Enter Alignment Chart with these values

To = Holdback Tension (Lbs)x = Horizontal Projection of Segment

r =Radius (Ft)

F = Coefficient of Frictionh= Vertical Projection of Segment

To/wr= Back Tension Ratio

w= Weight Per Unit Length of Cable (Lbs/Ft) T =Tension Force (Lbs)T/wr= Pulling Tension Ratio from Alignment Chart

=Angle in Degrees

Appendix B : Testing and Delivery SheetsTable 63- Calibration SheetSerial NumberfromtoCalibration per meterRemarks

MHCHMHCHNo. of PipesLength (m)Total Length

Subcontractor Supervisor Telecom Egypt SupervisorSignature Signature

Appendix C : Manhole Specification

Figure 62

Dimension External 2.9x1.9x2.5 mInternal 2.5x1.5x2.0 m General SpecificationsI- Normal Portoland Cement2- Steel RFT.Dekhaila or Equivalent3- 1 m3 Concrete Consists of 0.8 m3 Gravel + 0.4 m3 Sand + 360Kg Cement4- External Isolation 2 Faces of hot or Cold Bitomin

RemarkA separate top slab can be used too, using the required quantity of RFT and separate strips.

Figure 63- Section A-A

Figure 64-Section C-C

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