Topic 5, Horizontal Distribution Systems Flashcards
The standard floor space coverage area for each building automation system (BAS), is a
BAS outlet or device for every_______ of floor space.
A. 9.3 m 2 (100 ft 2)
B. 23 m 2 (250 ft 2)
C. 31 m 2 (330 ft 2)
D. 56 m 2 (600 ft 2)
E. 84 m 2 (904 ft 2)
B. 23 m 2 (250 ft 2)
Cables are installed in a ceiling in a straight line. The ceiling run is 60 m (200 ft) in length.
What is the MINIMUM number of J-hooks required to support the cables?
A. 20
B. 30
C. 40
D. 50
E. 60
C. 40
You are designing a horizontal distribution system that will have a zone box located 71.6 m
(235 ft) away from the telecommunications room (TR). A 50 mm (2 in) conduit is designed from the TR to a pull box located 36.6 m (120 ft) away from the TR. A 1 1/2 inch conduit is designed from the pull box to the zone box located 35.1 m (115 ft) beyond the pull box.
Assuming no conduit bends, and excluding the TR and zone box, what is the total number of pull boxes/pull points required in this horizontal conduit system between the telecommunications room (TR) and zone box?
A. 2
B. 3
C. 4
D. 5
B. 3
The MINIMUM finished height of access flooring in a general office area is:
A. 50 mm (2 in)
B. 150 mm (6 in)
C. 200 mm (8 in)
D. 250 mm (10 in)
E. 300 mm (12 in)
C. 200 mm (8 in)
Using the “pathway design” for horizontal cable distribution, how many cable runs are placed to serve 15 individual?
A. 15
B. 30
C. 45
D. 60
C. 45
In the ceiling zone method of distribution, the usable floor area should be divided into zones each measuring:
A. 9.3 sq m (100 sq ft) to 23 sq m (250 sq ft)
B. 23 sq m (250 sq ft) to 56 sq m (600 sq ft)
C. 23 sq m (250 sq ft) to 84 sq m (904 sq ft)
D. 56 sq m (600 sq ft) to 84 sq m (904 sq ft)
E. 56 sq m (600 sq ft) to 100 sq m (1,100 sq ft)
C. 23 sq m (250 sq ft) to 84 sq m (904 sq ft)
Perimeter raceway systems should be used primarily for:
A. Underfloor pathway
B. Apartments or hotels where molding is accessible in the work area
C. Warehouses with minimal telecommunications services
D. Small floor areas where the majority of telecommunication services will be along the walls
E. Equipment rooms where cable tray is cost prohibitive
D. Small floor areas where the majority of telecommunication services will be along the walls
From a 1000 ft (305 m) roll of optical fiber, how many MAXIMUM length centralized optical fiber cabling runs can be made?
A. 1
B. 2
C. 3
D. 4
E. 5
C. 3
Which of the following is true when describing slip sleeves or gutters?
A. More costly than pull boxes
B. Can be used as a splice location
C. Provides more space for pulling
D. Cannot be used in place of a pull box
E. Must be equal in size to the main conduit
C. Provides more space for pulling
Which of the following is NOT an advantage of access floor systems?
A. They have a low initial cost
B. They are designed for high capacity
C. They are aesthetically acceptable for office decor
D. Cabling is easily accessible across the entire floor
E. Changes can be made quickly with little occupant disruption
A. They have a low initial cost
An existing ceiling raceway system has 115,000 sq mm (177 sq in) of cross-sectional area available for distribution of cable runs. How many can be served by the existing system?
A. 115
B. 160
C. 177
D. 189
E. 195
C. 177
You are designing a horizontal pathway system where you will provide 100 mm (4 in) conduit and pull boxes. The building architectural elements will only allow for a single layer of conduits (not stacked). The main horizontal pathway system consists of five 100 mm (4 in) conduits. Large single sheath copper cables are not expected to be placed. Which of the following is the MINIMUM width pull box that is to be provided?
A. 600 mm (24 in)
B. 900 mm (36 in)
C. 1220 mm (48 in)
D. 1520 mm (60 in)
E. 1830 mm (72 in)
C. 1220 mm (48 in)
Which type of cable tray is best described as a ventilated bottom with side rails?
A. Ventilated channel
B. Ladder
C. Spline
D. Ventilated trough
E. Basket tray
D. Ventilated trough
Which of the following is NOT considered acceptable in an information technology system
(ITS) conduit design and installation?
A. Contains no continuous sections longer than 30 m (100 ft)
B. Bonded to ground on one or both ends in accordance with national or local code requirements
C. Will withstand the environment to which they were exposed
D. Uses flexible conduit to access wall outlets
E. Avoid routing conduit over or adjacent to heat sources
D. Uses flexible conduit to access wall outlets
A conduit run is installed from the ER to a TR. It has two (2) 90 degree bend and a length of 20 m (65 ft). What will be the MINIMUM test rating of the pull cord left in the conduit?
A. 20 kg (44 lb)
B. 40 kg (88 lb)
C. 60 kg (132 lb)
D. 90 kg (200 lb)
E. 100 kg (220 lb)
D. 90 kg (200 lb)
When placing an optical fiber cable in the horizontal optical fiber cabling subsystem, what is the MAXIMUM number of splices that can be used?
A. 1 -
B. 2 -
C. 3 -
D. 4 -
E. 5 -
B. 2 -
