Flashcards in Ch. 20 - Outside Plant.csv Deck (54):
Bucket truck caution:
The 'count' level of service diversity assigns circuits among different:
Binder groups within one cable
The 'backbone' level of service diversity assigns circuits among different:
Intrabuilding backbone cables
Level of Service Diversity:
Dual service entrances
-Police & Fire Stations
-Radio & TV Stations
-Data Centers & CO
(not sports arena, circus, arena)
OSP cable is typically unlisted because of their:
sheath material and filling compounds
OSP type cable must be terminated ________ from P.O.E.
588' between buildings = 686'
(study drawing in page)
AP may bring fiber or copper to customer property through:
The recommended min. conduit reqs for each underground telecommunications service entrance point are:
Four 4" conduits with at least one spare 4" conduit
Consider placing ________ innerduct inside _________ conduit.
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
When installing UG entrance, the max. number of bends between pulling points are:
Two 90° bends
UG conduit should be terminated at the designated property line or easement w/ a min. depth cover of:
U/G conduit depth? In cold climates?
Cold climates - below the 50 yr freeze line
Entrance facility conduit
4" ceiling or floor
**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.
When refilling a trench, the earth should be
Aerial entrances to small buildings should be _______ pairs or less.
When aerial entrances are used, the span from the last pole to the bldg. must not exceed ________.
When an aerial entrance enters a building through a vertical conduit mast, the mast should not exceed more than ______ above the roof line.
Entrance sleeve through wall=
Slopes 0.5" & flush w/ wall
Protective barrier (bollards)
-filled with cement
-Encased to min. depth of 36"
-Extend a min. of 42" AFF
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:
The entrance facility terminating space must be located in a dedicated room if the building to be served is larger than:
Pedestals mounted on the outside wall of buildings should be installed within _____ of each tenant space.
**Single story office/whse, how many pedestals do you use in 600' run?
Minimum depth of a trench should allow _______ of cover from top of cable to final grade.
Where there are several layers of UG services possible, and adequate identification may be questionable, the location method recommended is:
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.
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
When a joint trench method is used, the minimum vertical/horizontal separation distance between telecommunications facilities and street rail should be _______.
**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
**Place cable in rigid PVC conduit for a distance of ______ on either side of the pipeline crossing.
If multiple, place on the outside pipes
**Place rigid steel conduit for a min. distance of _____ on either side of the center of the track crossing.
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?
To prevent accidental dig-up, place ________ a minimum of _______ below grade.
Warning tape is eitheir
-Non detectable (non metallic)
-Detectable (metallic tracings)
Common Ground Alliance (CGA) has adopted ________ for CATV & Telecom cables.
Typically, the best way to dig a small trench for placing a small conduit or a direct-buried cable uses a:
digs & places cables at same time
*All bends must be long, sweeping bends w/radius not less than:
10x internal diameter of conduit
Use corrosion resistant conduit of one of the following types:
-Fiber and/or fiberglass
-Rigid galvenized metal
-Rigid & non-rigid non metallic
(not black iron pipe)
Position conduits on ________ of pole.
Pull cord test rating=
**Maintenance Holes (MH) 12-20' use ____ covers, over 20' use ____ covers.
T - telephone
S - signal
TV - CCTV-CATV
MH's should be equipped with:
-Pulling eye - 7/8" diameter
-Sump of at least 8" in diameter
-Non Corrosive tag w/ MH size
-Bonding inserts and struts for racking
Suspension strand & cable should be placed on the ________ of the pole line.
Pole classification strength & class
-strongest rated pole @ 00 & weakest rated @ 10 and length 35' class 6
Poles of same class must be able to to withstand horizontal load applied _______ from top.
35' class 6
Poles are subject to the following three types of loading
-Transverse storm = wind pressure
-Vertical loading = weight of attachment
-Bending = unguyed corners