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30 Cards in this Set
- Front
- Back
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What use conduits to provide facilities out of sight?
(12-2) |
Underground pathways |
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When should an ITS designer consider placing innerducts inside each 4 inch conduit to ensure the maximum amount of cables are placed?
(12-5) |
When Optical fibers are used |
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A smaller pathway within a conduit is called a:
(12-5) |
innerduct |
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The smaller pathway is available in the following:
(12-5) |
Innerduct is available in
1. Various diameter
2. various reel lengths and color
3. polyethlyene tube
4. fabric or mesh |
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What should an owner do when a building is not at the property line to support entrance facilities?
(12-7) |
provide two or more conduits from a point inside the building to the property line |
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What depth should underground conduit at the property line or easement be terminated at?
(12-8) |
24 inches |
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What does OSHA recommend for trenches that are greater than 5 feet deep?
(12-10) |
Be shored, sloped, or stepped (benched) to prevent cave-in;
have a minimum clearance of 2 feet to the excavated dirt pile |
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What is the maximum cable span from the last pole if an aerial entrance is used?
(12-11) |
100 feet |
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What are aerial cable limitations?
(12-11) |
Limited to 200 pairs or less for AP connection;
No other communications entrances |
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What is the maximum height of a vertical conduit mast to ensure proper support?
(12-15) |
4 inches above the roof line |
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The ITS designer should consider dual service entrances (two 100 percent diverse routes) as emergency backup for building that are mission critical. Mission critical includes the following:
(12-21) |
1. Hospitals
2. transportation facilities
3. Police and fire stations
4. military installations
5. radio and tv statons
6. data centers and telephone central offices
7. emergency call centers and networks ops centers |
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What is it called when there is 100 percent physically separated route such that the damage to the first route cannot affect the second route?
(12-21) |
full route diversity |
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BICSI recommends OSP, unlisted, cable transition to listed cable as close as practical upon entering the building. Per code restrictions, the must be within how many feet from the point of entrance?
(12-22) |
50 feet |
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What are the characteristics of a protection bollard?
(12-23) |
4 inches in diameter;
filled with concrete;
have a depth of 36 inches;
have a minimum height of 42 inches AG |
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What is the maximum building size that is allowed to not have a dedicated room EF?
(12-24) |
100,000 square feet |
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communications pedestals shall be located within how many feet of the tenant space they serve?
(12-25) |
150 feet |
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What is the maintenance clearance requirements for ground supported terminals?
(12-25) |
3.28 feet (1 meter) |
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What is the advantage of direct buried cable?
(12-27) |
low installation cost |
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The disadvantages of direct buried cable are:
(12-27) |
does not provide protection;
inflexible for future changes;
discourages accurate route planning |
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What are the advantages of aerial pathways?
(12-29) |
installed quickly;
readily accessible for maintenance |
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What are the disadvantages of aerial pathways?
(12-29) |
aesthetic appearance on property;
subject to traffic and pedestrian clearances;
damage to building exterior;
susceptible to environmental conditions |
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What are the three primary locate methods?
(12-30) |
electronic;
water vacuum;
air vacuum |
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if buried, warning tapes should be used. The warning tapes should be located at what depth?
(12-33) |
a minimum of 12 inches below grade |
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Warning tapes can be either:
(12-33) |
detectable or non-detectable |
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The Common Ground Alliance has adopted what color for telecommunications and CATV cables?
(12-33) |
orange |
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all underground conduit bends should be sweeping type with bend radius not less than what value?
(12-36) |
10 times the internal diameter of the conduit |
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What side of the pole should conduits be placed?
(12-40) |
on the field side; the side that is protected from normal traffic |
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All hardware in MH should be galvanized. MHs should be equipped with the following:
(12-43) |
1. bonding and grounding provisions
2. pulling eyes at least 0.875 inches diameter
3. a sump at least 13 inches in diameter
4. an entry ladder |
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The strength of the concrete used in MHs should be at least:
(12-43) |
3500 psi |
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What are the three types for loading a pole is subject to?
(12-49) |
transverse storm;
vertical loading;
bending moments |
