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A comprehensive set of questions and answers related to bicsi osp (outside plant) standards and practices. It covers various aspects of osp design, installation, and maintenance, including cable infrastructure, pole design, grounding, and splicing. Valuable for students and professionals seeking to understand the principles and best practices of osp telecommunications.
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If lead to height ratio is between 1/2 and 3/4 and only 2 or 3 spans the head guy should be_____ than suspension strand. โ: One SIze Larger Important set of deliverables โ: Design documents OSP cost variance โ: 10% CSI 27 CSI 28 CSI 31 CSI 33 CSI โ: Telecommunications
electrical safety and security' Earth work Utilities Electrical NAP groupings โ: 4,6,8, 4 parts security โ: Prevent, Detect,Alarm,Secure 3 components of EMI โ: Unbalanced electromagnetic fields of the power system, Coupling between power and telecommunications and susceptibility of the tele system Direct buried cables collects ground strikes with a distance determined by soil resistance typically? โ: 6.6' to 19.7' A reading of______ ampres is the best possible reading for any bonding conductor, AC should be less than 1A and DC 500 Miliampres
_______ and ______ are not used after the first 24 binders. โ: Violet and slate Load coil designs to counter the effects of capacitance buildup in loop lengths over? โ: 5.5 KM Baseband cabling used in lengths up to? โ: 328' Uses a solid polymer that insulates each conducting wire ad is color coded and more resistant to electrical surges and more tolerant to handle than PE-39 has 6 to 3000 Pairs โ: PE- 89 PE-39 has pair range of? โ: 25 to 4200 pair What determines the maximum permissible end to end system attenuation in a given fiber link? โ: Average transmitter power and receiver sensitivity By subtracting the passive cable system attenuation from link loss budget what value is received?
โ: System performance margin I C E A โ: I= Design C= Insulation type E- Conductor gauge A- Sheath design In planning OSP cabling,__ must be determined for? โ: Cable infrastructure Class 7 pole breaking strength โ: 5335 N (1200Lb) What should be used to keep a pole from leaning sideways when the load on a pole is not large enough to warrant a guy? โ: Ground braces
Depending on projections, grow factor is typically what percent? โ: 10 to 15% Considering aerial plant design โ: Weight of cable, Height of poles, R/W, Make ready requirements and joint use agreements Pole grades are based on? โ: Importantance of services they offer, Loading capabilities and pole strength. Moment strength โ: Value of movement in newton meters or equivalent in pound force feet is equal to the transverse load in newtons or equivalent in pound force feet multiplied by the distance in meters from the load point to the point considered value of moment. Summing loads โ: converts all transverse loads into equivalent loads at a point 2' from the top of the pole. Pole classifications
โ: Total number of cables during life span, Total weight of cables, size of support strands, Guy requirements(Corner or dead ends) Transverse load formula โ: Load per foot of span length X wind pressure in Kilograms per square meter X diameter of serial line including ice on line Assumed load โ: 1500LB in heavy per meter, 3000LB is medium Service drop load per meter is_____ in medium and heavy and_____ in light loading. โ: .20 LB and .16LB Bending moments formula โ: Total unbalanced force in kilograms of conductor tensions X Height of the wire? Cable attachment above the ground _____ or less doesn't interfere with aircraft authorities โ: 200'
โ: Plank ground braces When existing pole is ground braced at top and bottom it is economical to install a _______. โ: Pole Key Anchor Can be used when carving soil make other methods impractical? โ: Water jet hydro vac Can excavate holes up to 20" dia and as deep as 7'. โ: Earth boring machine Reinforced pole in longitudinal direction of line. โ: Head Guys Reinforced poles in the transverse direction of line. (Right angle to cable run) โ: Side Guys Avoid using ____ and ))))) poles as storm guying points. โ: Corner or junction
Used to fasten cables at a corner. โ: Corner or pull ____ is used when the lead to height ratio is 1-1/4 or less โ: Strait eye bolt _____ is used when lead to height ratio is 1-1/4 or greater. โ: Thimble eye bolt If lead to height ratio is 3/4 or greater the head guy for the cables can be the_____as suspension strand. โ: Same Size If lead to height ratio is between 1/2 and 3/4 and only 2 or 3 spans the head guy should be______ than the suspension strand. โ: One Size Larger If pull on a corner pole is 50' or less a guy can be______. โ: Placed at a bisecting angle
When conditions allow the guy should equal the height if practical avoid having a LT height ration greater than? โ: 1/ Guy rod sizes use __ for 5/8", Use_____ for 3/4" and use______ 1-1/4" โ: 12M,18M.32M May be used where guys cannot: Like corner pole where a overhead guy cannot support and terrain that makes guying ineffective. โ: Push brace _________ A pole that inclines from a true vertical position, This is done to make sure the top pole will be in line. โ: Raked Pole Bolts usally have a ____ dia. โ: 5/8" Select support strands based on: โ: Cable weights, Storm loading, tensile strength and pole spacing
Based o stringing tension a OSP should plan the pole line not to exceed_____ โ: 60% In OSP 6m and 10m are the most used,__ should never be used. โ: 2.2M OSP should plan design and insulation for___ or more years of service growth. โ: 10 Pole depth formula โ: 10% of pole plus 2' For poles containing communications and power vertical risers, the conduits should be terminated on the pole_____ degrees apart but not less than_____ degrees. โ: 180, Both end walls only โ: A
โ: Extending from main conduit may contain feeder or distribution cables Subsidary conduit โ: From pedestal to termination point A main conduit should enter the_____of a MH. โ: End walls Type B โ: Think wall requires concrete encasement Type C โ: Thick wall may be direct buried with selected backfill in strait runs. Type D โ: Ultraviolet and flame resistant Type E โ: Not used in strait line conduit
โ: Low Stress PE 63 โ: Medium stress PE 80 โ: High stress The inside diameter of a casing shall be atleast___% larger than the outside diameter of the largest conduit in casing but no less than____ greater than the largest outside diameter of conduit. โ: 10, 2" The depth from base of railroad to the top of casing should be no less than______the bottom of the ditch should be no less than___ from top of casing. โ: 4.6', 3' High soil compaction is required 85% or greater when a minimum of___ cover cant be maintained. โ: 30"
โ: Centerline description Describes a tract of land using a series of lines, distances and bearings โ: Metes and bounds How many townships in a range โ: 16 How is US rectangular grid measured? โ: Guide of meridians at 39KM 24 MI intervals What connector is pull and wiggle proof and low loss and also offer a small form factor design? โ: LC Minimal system loss โ: Subtracting the receivers dynamic range from the system gain Cable suitable for direct buried โ: PSAP Polyethylene, aluminum steel, polyethylene
____ is a special use design that may be considered for underground conduit installations where large pair count cable is required and conduit space is limited? โ: Duct Pic 2 major features to consider with coaxial cable size and type? โ: Attenuation margin and cost What coax is good for moderate climate? โ: Bare aluminum Underground life span โ: 50 years Direct buried and aerial life span โ: 30 years Advantage of using fabric mesh innerduct? โ: Conformed to odd-shaped spaces
