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14th Reading > Chp 3 > Flashcards

Chp 3 Flashcards

1
Q

Telecommunications Room (TR)

A

Architectural space

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2
Q

Equipment Room (ER)

A

Environmentally controlled

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3
Q

Entrance Facility (EF)

A

OSP

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4
Q

Loud equipment should be located ___ the telecommunications space

A

Outside

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5
Q

Sleeves/slots should be located

A

adjacent to a wall which can support the cables and not above the termination point (to be sure equipment is accessible)

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6
Q

Three types of steel conduit

A

Rigid metal conduit (RMC)
Intermediate metal conduit (IMC)
Electrical metallic tubing (EMT)

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7
Q

EMT

A

Thin wall

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8
Q

EMT is the ___ weight steel conduit

A

Lightest

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9
Q

At least ___ 4” conduits should serve an ER, TR, EF

A

4

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10
Q

TRs on the same floor should be connected with at least ___ 3 inch conduit

A

1

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11
Q

Recommended door dimensions

A

3’ X 6.5’ - minimum

Double door recommended (slide side to side or removable)

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12
Q

Used to reduce static electricity

A

Antistatic floor tile

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13
Q

ER power provisions

A

Two dedicated duplex receptacles on individual circuits

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14
Q

HVAC should run

A

24 hours a day/365 days a year

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15
Q

Temperature of room that does not contain active equipment

A

95°

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16
Q

Rooms with active equipment should be kept at ___

A

77° and 55% humidity

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17
Q

Interchange per hour for TR

A

1

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18
Q

Air change per hour for tunnel

A

3

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19
Q

Air change per hour for battery plant

A

4

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20
Q

___ should be kept close to the entrance of the telecommunications space

A

Fire extinguishers

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21
Q

Telecommunication spaces should be located away from ___

A

Threats of flooding

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22
Q

Minimum lighting in TE

A

50 foot-candles

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23
Q

Shallow room

A

an enclosed space for housing cabling terminations, cross connect cabling, and telecom equipment

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24
Q

Building less than 1000 sq’

A

Cabinet

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25
Q

Wall field sizing

A

4 sq” / balanced twisted-pair 4-pair circuit

2 sq” / optical fiber strand

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26
Q

Wire management spacing

A

5-6” above and below connecting hardware

27
Q

Corners result in ___ of lost space

A

12”

28
Q

Standard for racks, cabinets or enclosures

A

(EIA/ECA) 310-E

29
Q

TR’s and TE’s differ from ERs and EFs how?

A

TRs TEs serve a floor, ERs and EFs server buildings, tenants, or SP

30
Q

TRs or ERs should be located on every ___

A

Floor

31
Q

One TR or ER for every ___ square feet

A

10,000

32
Q

A full-size TR can support ___ 4-pair cables

A

480

33
Q

A small TR can support ___ 4-pair cables

A

240

34
Q

How many square feet does this room serve (2 racks)?

A

Less than 5000 sq’

35
Q

TE doors may be?

A

Hinged or removable

36
Q

TE service area

A

3,600 sq’

37
Q

ERs should be located in the ___

A

Center

38
Q

255 work areas
55 BAS devices
ER size ___

A

205 sq’

1
Divide the amount of usable floor space by ≈9.3 m2 (100 ft2) to determine
the number of individual work areas that the ER will serve through both
backbone and horizontal cabling.
NOTES: Usable floor space includes the building area used by occupants in
their normal daily work functions. For planning purposes, this
should include hallways but not other common areas of the
building. If the usable floor space is unknown, deduct 20 percent of
the total floor area to estimate the usable floor space.
An area of ≈9.3 m2 (100 ft2) is an industry average used to
calculate work areas. If work areas are smaller, the size of the ER
shall be increased accordingly.
2
3
Divide the amount of total floor space by ≈23.2 m2 (250 ft2) to determine
the number of BAS devices that the ER will serve through both backbone
and horizontal cabling.
Multiply the number of work areas to be served by ≈0.07 m2 (0.75 ft2) and
the number of BAS devices to be served by ≈0.023 m2 (0.25 ft2) to
determine the ER size.
If there are fewer than 200 work areas, the ER shall be no less than ≈14 m2 (150 ft2). For
special-use buildings (e.g., hospitals, hotels), ER size requirements may vary

39
Q

Typical equipment cabinets require ___ of floor area and ___ working clearance

A

10 sq’ & 10 sq’

40
Q

Recommended cable pathways entering TR

A

(4) 4” + spare if over 40,000sq’

41
Q

Cable pathways entering ER

A

4, 4” conduits minimum with at least 1 spare

42
Q

Cable pathways entering EF

A

(5) 4” + (3) 2”

43
Q

ER temperature

A

77°

44
Q

ER humidity

A

55%

45
Q

ER heat dissipation

A

5000 BTUs (British Thermal Unit)

46
Q

HVAC sensors/controls located @ ___ AFF

A

5’

47
Q

MC / HC

A

Main Crossconnect / Horizontal Crossconnect

48
Q

The MC should be located ___

A

Close to the ER / center of building

49
Q

Size of telecom spaces

A

5000 sq’ - 8’ x 10’
5000-8000 sq’ - 9’ x 10’
8000-10,000 sq’ - 10’ x 11’

50
Q

TE power requirements

A

1 outlet

51
Q

Standard working height means ___

A

No scaffold or ladder req’d

52
Q

Avoid placing the TR near ___

A

Kitchens
Bathrooms
Janitor closets

53
Q

Color code for 4”, 5” & 6” conduit thread protectors

A

Blue

54
Q

___ protect telecommunications systems from contaminants

A

Positive room pressure
Vapor barriers
Absolute filters

55
Q

Recommended space height for rack, cabinet or enclosure

A

7.5’

56
Q

ER minimum size

A

10’ x 16’

57
Q

Allow ___ more space for routing of cables, jumpers and patch cords

A

20%

58
Q

Color code for 1”, 2” & 3” conduit thread protectors

A

Orange

59
Q

If usable space is unknown, deduct ___ % of the total floor area to estimate usable floorspace when determining size of ER

A

20

60
Q

Telecommunications Enclosure (TE)

A

Case

61
Q

TR Plywood required specs

A

4’x8’x 0.75” AC rated or better. Mounted at 8” AFF on at least 2 walls.

62
Q

Required clearance space for wall mounted equipment

A

12in

63
Q

Required space by code in front, and behind, rack

A

1m in front and 1m behind largest equipment (4 post rack, or deepest mounted equipment)

64
Q

Space allocated for rack mounted equipment

A

18in

14th Reading (13 decks)

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