(OLD) €h 20 - Outside Plant Flashcards
20–2 safety procedures
Careful attention aerial bucket trucks =
Winter
20-2 safety procedures
Special sites =
Factories nuclear power plants
20–3 underground pathways
Underground pathways =
Conduit
20–6
Right-of-way =
Easements
20–7 service diversity
Count =
sheet or cable =
route =
backbone =
- binder groups
- sheath or cables
- paths
- backbone cables
20–7
dual entrances =
Except residence, does not belong
20–8 entrance cable guidelines
OSP type cable termination or transition =
Must not exceed 49 feet point of entrance
20–8 entrance cable guidelines
Indoor/outdoor NEC cable=
past 49 feet from point entrance
20–800 cable guidelines
588 ft between =
49ft + 588ft + 49ft = 686ft total
20–9 types of entrances
Underground =
buried =
Aerial =
- Conduit
- out of sight service w/out conduit
- overhead
20–10 placing innerducts
Innerducts =
2
- Smaller pathway
* 1 to 2 inch
20–13 terminating conduit designated property line
Cover depth =
Minimum cover of 24 inches
20–13 cover depth
Cold climates =
Minimum burial 50 year freeze point
20–14 designing termination points
ITS designer should design conduits =
4” AFF
20–15 avoid a sunken trench
Refilling a trench =
Tamped
20–15
Shoring =
2
- 5ft deep
* 2ft edge of the trench
20–16 maximum span
Aerial =
Not exceed 100 feet
20-20 vertical conduit masts
Do not extend the mast > =
4in
20-22
Entrance through a wall =
0.5in slope/flush
20–23 requirements for inside space
Protected or barriers =
2
- 4 inch diameter
* filled with cement
20–24 requirements for inside space
100,000 ft.² =
Dedicated room for entrance facilities
20–25 pedestal hardware mounted outside walls
Pedestals =
150ft each tenant
20- 29 Direct buried underground pathways
Trench =
Sunken trench =
subsurface facilities =
24in of cover
Tamp
Call local underground utilities
20–30 direct buried underground pathways
Locating methods =
Except sonar, does not belong
20–31 direct buried and underground pathways
Shoring requirements=
5ft deep
24in from edge
20–31 joint trench required separations
Power =
Pipes =
- 12in well-tamped earth
* 6in when crossing - in 10ft of rigid PVC
20–32 warning tape requirements
Warning tape =
2
- 12in
* non-detectable or detectable
20–32 warning tape requirements
Common ground alliance (CGA) =
Color orange
20–33
vibratory plow =
Cuts into the ground and cable is fed
20–35 conduit guidelines
Using corrosion resistant conduit =
Except black iron pipe, does not belong
20–36 positioning underground conduit risers on poles
Practical =
Field side of the pole
20–36 choosing a pull cord
Test rating =
200 lb
20–39 multiple covers
Manhole over 12 feet long=
- Between 12 feet and 20 feet, use two covers
* over 20 feet, use three covers
20–39
MH ‘s
8ft, 16ft, & 26ft
How many covers?
6 covers
20–39 identifying covers
T=
S=
TV=
- telephone
- signal
- CCTV/CATV
2039 manhole interior hardware
MHs equipped =
3
Pulling eyes 7/8in
Sump 8in
Ladder
20–39 concrete strength and reinforcement
Strength of concrete =
3480 psi
20–44 aerial plant criteria
Suspension strand and cable =
Placed on the roadside
20–45 poles
Poles by strength =
Strongest rated pole at 00
Weakest rated pole at 10
20–45 poles
Withstand the same horizontal load =
24 inch from the top of the pole
20–45 pole loading
Transverse =
vertical =
bending =
- Wind pressure
- weight
- corners
20–25 optical fiber cables
New strand for the optical fiber cable =
Uppermost
20–48 references
EAI-758-A =
Outside plant telecommunications
