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RCDD > €h 07 - Telecom Spaces > Flashcards

€h 07 - Telecom Spaces Flashcards

1
Q

7-1 Telecom Spaces

Telecom Enclosure (TE) =

Telecom Room (TR) =

A

* a case

* architectural spaces

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2
Q

7-1 Telecom Spaces

Equipment Room (ER) =

Entrance Facility (EF) =

A

* environmentally controlled

* OSP

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3
Q

7-2 Acoustic Noise Levels

acoustic noise levels =

(2)

A

* kept outside telecom spaces

* exp - photocopy equip.

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4
Q

7-4 ceilings

min. ceiling height =

consideration =

A

* 8 ft

* 10 ft

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5
Q

7-4 clearances

clearances =

wall mounted equipment =

Corners =

A

* 3.28 ft

* 6 in depth

* 12 in

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6
Q

7-5 conduits, trays, slots, sleeves and ducts

Sleeves, slots, and/or conduits =

A

Left side of room

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7
Q

7-5 conduits, trays, slots, sleeves and ducts

Trays and conduits =

A

Protrude 1 inch to 2 inch

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8
Q

7-5 conduits, trays, slots, sleeves and ducts

Three types steel conduits =

A

Except black steel/iron pipe

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9
Q

7-7 conduits, trays, slots, sleeves and ducts

EMT =

(3)

A

* thin walled

* unthreaded

* lightest-weight steel conduit

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10
Q

7-8 conduits, trays, slots, sleeves and ducts

Sleeves, slots =

A

Not to be left open

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11
Q

7-8 conduits, trays, slots, sleeves and ducts

At least four =

A

(4 trade size) sleeves

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12
Q

7-8 conduits, trays, slots, sleeves and ducts

Interconnected =

A

(3 trade size) conduits

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13
Q

7–9 doors

Doorway lockable doors =

A

3 ft wide and 6.5 ft high

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14
Q

7–9 doors

ER doors =

A

Double door recommended

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15
Q

7–9 doors

Doors that open =

A

Outward provide additional usable space

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16
Q

7–9 doors

Door sills =

A

Not recommended

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17
Q

7–9 doors

Doors =

(2)

A

* slide side to side

Or

* removable

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18
Q

7–9 dust and static electricity

Avoided by =

A

Tiles instead of carpet

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19
Q

7–10 electrical power

Minimum of two dedicated =

A

Non-switched AC

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20
Q

7–10 electrical power

Duplex or quad convenience receptacles =

A

6 in and 6 ft

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21
Q

7–10 electrical power

One receptacle =

A

Emergency power

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22
Q

7–11 environmental control

TR active no equipment =

A

95°F, 85% humidity

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23
Q

7–11 environmental control

TR housing equipment =

A

77°F, 55% humidity

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24
Q

7–11 environmental control

1 air change per hour =

(3)

A

* TR

* TE

* ER

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25
Q

7–11 environmental control

3 air changes per hour =

4 air changes per hour =

A

* Tunnel

* Battery plant

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26
Q

7-11 environmental control

HVAC =

A

365 days per year

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27
Q

7–12 fire protection

Portable fire extinguishers =

A

Close to the entrance as possible

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28
Q

7–12 fire protection

Wire cages =

A

Sprinkler heads

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29
Q

7–12 fire protection

Drainage troughs =

A

Wet pipe systems

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30
Q

7–12 fire protection

Wall linings =

A

Two coats of fire retardant

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31
Q

7–12

Q/A

flood prevention =

A

Move TR to alternate location

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32
Q

7–13 lighting

Light switches =

A

Near the entrance

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33
Q

7–13 lighting

Coordinating the lighting layout =

A

Equipment layout

34
Q

7–13 lighting

Providing a minimum =

A

500lux (50foot-candles) measured at the point of cable termination

35
Q

7–14 safe and clean environment

Standard working height=

A

Avoid the use of ladder or scaffold

36
Q

7–15 size guidelines

5000 ft.² or less =

A

10ft x 8ft

37
Q

7–15 sizing guidelines

> 5000 ft.² to 8000 ft.² =

A

10ft x 9ft

38
Q

7–15 sizing guidelines

> 8000 ft.² to 10,000 ft.² =

A

10ft x 11ft

39
Q

7–16 sizing guidelines – smaller buildings

Walk-in rooms =

40
Q

7–16 size guidelines – smaller building

Shallow rooms =

A

2ft x 8.5ft

41
Q

7–17 size guidelines termination space allocation

Balance twisted-pair =

A

4 in sq 4 pair circuit

42
Q

7–17 size guidelines termination space allocation

Optical fiber =

A

2 in.² Fiber Core/stand

43
Q

7–19 wall and rack, cabinets, or enclosure space for terminations

Clear space 5 in to 6 in =

A

Connecting hardware for cable handling

44
Q

7–19 wall and rack, cabinets, or enclosure space for terminations

Corners result in =

A

12in of lost space

45
Q

7–20 racks, cabinets, enclosures

(ANSI/CEA)-310-E =

                     ^
A

Cabinets, racks, panels, and associated equipment

E = enclosures

46
Q

7–20 wall linings

plywood =

(3)

A

* at least two walls

* 8ft x 3/4in

* mount 8” AFF

47
Q

7–21 wall linings

Reduce warping plywood =

A

Kiln-dried to maximize moisture content of 15%

48
Q

7–21 TR’s TE’s

TR & TE serves =

A

tenants and floor

49
Q

7–21 TR & TE

ER & EF serves =

50
Q

7–22 TR & TE applications

At least one TR or ER =

A

Serves every building

51
Q

7–22 TR and TE applications

TR & TE min. =

TR & TE max =

A

* one per floor

* no max within a bldg

52
Q

7-23 backbone cross-connects

TR and TE’s also contain:

(4)

A

* ICs (BDs)

* MCs (CDs)

* passive cabling components

* active devices serverd by backbone

53
Q

7-23 Entrance Facilities

TR containing EF must provide =

(2)

A

* passive cabling components

* active devices required to interconnect campus EF to bldg cabling

54
Q

7-23 Entrance Facilities

multiple TR’s required if =

(2)

A

* cables length exceeds 295ft

* floor space exceeds 10,000 ft2

55
Q

7–24 TR guidelines

Q:

20,000 ft.² serve =

A

2 TR design

56
Q

7-26 TR

Full size TR =

Small size TR =

A

* 480, 4 pr cable terminations

* 280, 4 pr cable terminations

57
Q

7-26 Figure 7.1

A

10x8 = 5000ft or less

58
Q

7–29 general TE’s

TE doors =

A

Hinged or removable

59
Q

7–29 general TE’s

TE electrical power =

A

Minimum one dedicated

60
Q

7–30 general TE

TE lighting =

A

Minimum 500 lux (50foot-candles)

61
Q

7–30 general TE

TE size and spacing =

A

no greater than 3600 ft.²

62
Q

7-33 Equipment Room (ER) Design

ER’s may contain:

A

* active equipment

* cross-connect

* BAS or other systems

63
Q

7-34 Cross-connect facilites

Most common backbone cabling =

(4)

A

* balanced twisted-pair

* MM

* SM

* coax

64
Q

7-35 ER initial assement

ER are based on =

(5)

A

* customer requirements

* telecom pathway locations

* AP and SP requirements

* environment/facility conditions and resources

* building requirements

65
Q

7-36 locating the ER

ER space dictated by =

A

* size and variety of systems

* size of area of room

66
Q

7–37 ER access to cable pathways

3 examples of ER access to cable pathways =

A

* 10th floor of a 20 floor

* Center single floor

* Center large campus

67
Q

7-37 Delivery Access

ITS designer should locate ER =

A

accessible for large delivery equipment

68
Q

7-37 EF requirements

AP space =

(3)

A

* 4ft x 6 ft

* next to or in EF

* mesh or partition

69
Q

7-41 Equipment space

Equipment space =

A

10ft x 16ft

70
Q

7-43 determining size based on area size

Work areas =

71
Q

7–43 determining size based on area served

BAS devices =

72
Q

7–43 determining size based on area served

200 work areas =

A

No less than 160 ft.²

73
Q

7–43 determining size based on area served

Q/A

255 work area x .75 = 191.25

55 BAS devices x .25 = 13.75

A

191 ft.² + 14 ft.² = 205 ft.² ER size

74
Q

7–44 working clearances

Equipment cabinets =

A

10 ft.² x 10 ft.² for working clearance

75
Q

7–49 cable pathways entering ER

Circular sleeves =

A

Easier to fire stop

76
Q

7–49 cable pathway and ER

Four 100mm (4trade size) =

A

One spare sleeve

77
Q

7–49 cable pathway entering ER

TR =

A

(4) 4 in add spare per 40,000 ft.²

78
Q

7–49 cable pathways entering ER

ER =

79
Q

7–49 cable pathway entering ER

EF =

A

(5) 4in & (3) 2in = total 8

80
Q

7–50 for the environment control requirements

HVAC sensors=

81
Q

7–54 environment control requirements

Temperature =

Relative humidity =

Heat dissipation =

A

* 77°F

* 55%

* 5000 British thermal (Btu)

82
Q

7-55 Floor requirement

Instead of carpet =

A

Tile or other smooth surface that does not produce dust or static

RCDD (24 decks)

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