Ch. 20 - Outside Plant.csv Flashcards Preview

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Flashcards in Ch. 20 - Outside Plant.csv Deck (54):
2

Bucket truck caution:

In winter
(test)
(20-2)

3

The 'count' level of service diversity assigns circuits among different:

Binder groups within one cable
(20-7)

4

The 'backbone' level of service diversity assigns circuits among different:

Intrabuilding backbone cables
(20-7)

5

Level of Service Diversity:
Count =
Sheath =
Route =
Backbone =

-Binder
-Sheaths
-Paths
-Backbone
(20-7)

6

Dual service entrances

-Hospitals
-Airports
-Police & Fire Stations
-Military Installations
-Radio & TV Stations
-Data Centers & CO
(not sports arena, circus, arena)
(20-7)

7

OSP cable is typically unlisted because of their:

sheath material and filling compounds
(20-8)

8

OSP type cable must be terminated ________ from P.O.E.

49'
588' between buildings = 686'
(study drawing in page)
(20-8)

9

AP may bring fiber or copper to customer property through:

-U/G entrances
-Buried entrances
-Aerial entrances
(20-9)

10

The recommended min. conduit reqs for each underground telecommunications service entrance point are:

Four 4" conduits with at least one spare 4" conduit
(20-10)

11

Consider placing ________ innerduct inside _________ conduit.

1-2" innerduct
4" conduit
(20-10)

12

When a building is not on the property line, the _____ must provide ____ conduit(s) from a point inside the building to the property line or easement.

Building owner, two or more
(20-12)

13

When installing UG entrance, the max. number of bends between pulling points are:

Two 90° bends
(20-12)

14

UG conduit should be terminated at the designated property line or easement w/ a min. depth cover of:

24"
(20-13)

15

U/G conduit depth? In cold climates?

24"
Cold climates - below the 50 yr freeze line
(20-13)

16

Entrance facility conduit

4" ceiling or floor
(20-14)

17

**Shore a trench

5' deep or more w/ min. clearance of 2' from edge of the edge of the dirt pile to the edge of the trench.
(test)
(20-15)

18

When refilling a trench, the earth should be

tamped
(20-15)

19

Aerial entrances to small buildings should be _______ pairs or less.

100 pairs
(20-16)

20

When aerial entrances are used, the span from the last pole to the bldg. must not exceed ________.

100'
(20-16)

21

When an aerial entrance enters a building through a vertical conduit mast, the mast should not exceed more than ______ above the roof line.

4"
(20-20)

22

Entrance sleeve through wall=

Slopes 0.5" & flush w/ wall
(20-22)

23

Protective barrier (bollards)

-4" diameter
-filled with cement
-Encased to min. depth of 36"
-Extend a min. of 42" AFF
(20-23)

24

The recommendation is that if an entrance facility is to serve a gross floor space of 60,000 ft°, then the wall length required for terminating space is:

96"
(20-23)

25

The entrance facility terminating space must be located in a dedicated room if the building to be served is larger than:

100,000 ft
(20-24)

26

Pedestals mounted on the outside wall of buildings should be installed within _____ of each tenant space.

150'
(20-25)

27

**Single story office/whse, how many pedestals do you use in 600' run?

3 pedestals
(20-25)

28

Minimum depth of a trench should allow _______ of cover from top of cable to final grade.

24"
(20-29)

29

Locating methods

-Electronic
-Water VAC
-Air VAC
(not sonar)
(20-30)

30

Where there are several layers of UG services possible, and adequate identification may be questionable, the location method recommended is:

Water vacuum
(20-30)

31

When a joint trench method is used, the minimum vertical/horizontal separation distance between telecommunications facilities and power conduit should be _______ if masonry is used.

4"
(20-31)

32

When a joint trench method is used, the minimum vertical/horizontal separation distance between telecommunications facilities and power conduit should be _______.

12" of well tamped earth
(20-31)

33

When a joint trench method is used, the minimum vertical/horizontal separation distance between telecommunications facilities and street rail should be _______.

3.28'
(20-31)

34

**Joint trench separation: Power? Pipes (gas, oil, water)? RR?

-12" well tamped earth
-6" when crossing & rigid 10' on either side
-50" below top of rail & rigid 25" on either side
(20-31)

35

**Place cable in rigid PVC conduit for a distance of ______ on either side of the pipeline crossing.

10'
If multiple, place on the outside pipes
(20-31)

36

**Place rigid steel conduit for a min. distance of _____ on either side of the center of the track crossing.

25'
If multiple tracks, extend 25' on either side of the center outside track.
(test was: 3 tracks with 52' in between outside center of tracks with assumed 4' 8.5" standard tracks, what is the total rigid pipe length?) 102?
(20-31)

37

To prevent accidental dig-up, place ________ a minimum of _______ below grade.

warning tape
12"
(20-32)

38

Warning tape is eitheir

-Non detectable (non metallic)
-Detectable (metallic tracings)
(20-32)

39

Common Ground Alliance (CGA) has adopted ________ for CATV & Telecom cables.

orange
(20-32)

40

Typically, the best way to dig a small trench for placing a small conduit or a direct-buried cable uses a:

Vibratory plow?
(20-33)

41

Vibratory plow

digs & places cables at same time
(20-33)

42

*All bends must be long, sweeping bends w/radius not less than:

10x internal diameter of conduit
(test)
(20-35)

43

Use corrosion resistant conduit of one of the following types:

-Fiber and/or fiberglass
-Concrete
-Rigid galvenized metal
-Rigid & non-rigid non metallic
(not black iron pipe)
(20-35)

44

Position conduits on ________ of pole.

Field Side
(20-36)

45

Pull cord test rating=

200 lbs.
(20-36)

46

**Maintenance Holes (MH) 12-20' use ____ covers, over 20' use ____ covers.

two
three
(20-39)

47

**MH markings

T - telephone
S - signal
TV - CCTV-CATV
(20-39)

48

MH's should be equipped with:

-Pulling eye - 7/8" diameter
-Sump of at least 8" in diameter
-Ladder
-Non Corrosive tag w/ MH size
-Bonding inserts and struts for racking
(20-39)

49

MH Strength

3,480 PSI
(20-39)

50

Suspension strand & cable should be placed on the ________ of the pole line.

roadside
(20-44)

51

Pole classification strength & class

-strongest rated pole @ 00 & weakest rated @ 10 and length 35' class 6
(20-45)

52

Poles of same class must be able to to withstand horizontal load applied _______ from top.

24"
(20-45)

53

Telecom pole=

35' class 6
(20-45)

54

Poles are subject to the following three types of loading

-Transverse storm = wind pressure
-Vertical loading = weight of attachment
-Bending = unguyed corners
(test)
(20-45)

55

Fiber on pole

uppermost
(20-45)