€h 07 - Telecom Spaces Flashcards by Ali Jeffery

7-1 Telecom Spaces

Telecom Enclosure (TE) =

Telecom Room (TR) =

* a case

* architectural spaces

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7-1 Telecom Spaces

Equipment Room (ER) =

Entrance Facility (EF) =

* environmentally controlled

* OSP

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7-2 Acoustic Noise Levels

acoustic noise levels =

(2)

* kept outside telecom spaces

* exp - photocopy equip.

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7-4 ceilings

min. ceiling height =

consideration =

* 8 ft

* 10 ft

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7-4 clearances

clearances =

wall mounted equipment =

Corners =

* 3.28 ft

* 6 in depth

* 12 in

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

Sleeves, slots, and/or conduits =

Left side of room

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

Trays and conduits =

Protrude 1 inch to 2 inch

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

Three types steel conduits =

Except black steel/iron pipe

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

EMT =

(3)

* thin walled

* unthreaded

* lightest-weight steel conduit

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

Sleeves, slots =

Not to be left open

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

At least four =

(4 trade size) sleeves

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

Interconnected =

(3 trade size) conduits

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7–9 doors

Doorway lockable doors =

3 ft wide and 6.5 ft high

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7–9 doors

ER doors =

Double door recommended

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7–9 doors

Doors that open =

Outward provide additional usable space

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7–9 doors

Door sills =

Not recommended

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7–9 doors

Doors =

(2)

* slide side to side

* removable

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7–9 dust and static electricity

Avoided by =

Tiles instead of carpet

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7–10 electrical power

Minimum of two dedicated =

Non-switched AC

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7–10 electrical power

Duplex or quad convenience receptacles =

6 in and 6 ft

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7–10 electrical power

One receptacle =

Emergency power

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7–11 environmental control

TR active no equipment =

95°F, 85% humidity

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7–11 environmental control

TR housing equipment =

77°F, 55% humidity

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7–11 environmental control

1 air change per hour =

(3)

* TR

* TE

* ER

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7–11 environmental control 3 air changes per hour = 4 air changes per hour =

\* Tunnel \* Battery plant

7-11 environmental control HVAC =

365 days per year

7–12 fire protection Portable fire extinguishers =

Close to the entrance as possible

7–12 fire protection Wire cages =

Sprinkler heads

7–12 fire protection Drainage troughs =

Wet pipe systems

7–12 fire protection Wall linings =

Two coats of fire retardant

7–12 Q/A flood prevention =

Move TR to alternate location

7–13 lighting Light switches =

Near the entrance

7–13 lighting Coordinating the lighting layout =

Equipment layout

7–13 lighting Providing a minimum =

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

7–14 safe and clean environment Standard working height=

Avoid the use of ladder or scaffold

7–15 size guidelines 5000 ft.² or less =

10ft x 8ft

7–15 sizing guidelines \> 5000 ft.² to 8000 ft.² =

10ft x 9ft

7–15 sizing guidelines \> 8000 ft.² to 10,000 ft.² =

10ft x 11ft

7–16 sizing guidelines – smaller buildings Walk-in rooms =

4ft x 6ft

7–16 size guidelines – smaller building Shallow rooms =

2ft x 8.5ft

7–17 size guidelines termination space allocation Balance twisted-pair =

4 in sq 4 pair circuit

7–17 size guidelines termination space allocation Optical fiber =

2 in.² Fiber Core/stand

7–19 wall and rack, cabinets, or enclosure space for terminations Clear space 5 in to 6 in =

Connecting hardware for cable handling

7–19 wall and rack, cabinets, or enclosure space for terminations Corners result in =

12in of lost space

7–20 racks, cabinets, enclosures (ANSI/CEA)-310-E = ^

Cabinets, racks, panels, and associated equipment E = enclosures

7–20 wall linings plywood = (3)

\* at least two walls \* 8ft x 3/4in \* mount 8" AFF

7–21 wall linings Reduce warping plywood =

Kiln-dried to maximize moisture content of 15%

7–21 TR's TE's TR & TE serves =

tenants and floor

7–21 TR & TE ER & EF serves =

buildings

7–22 TR & TE applications At least one TR or ER =

Serves every building

7–22 TR and TE applications TR & TE min. = TR & TE max =

\* one per floor \* no max within a bldg

7-23 backbone cross-connects TR and TE's also contain: (4)

\* ICs (BDs) \* MCs (CDs) \* passive cabling components \* active devices serverd by backbone

7-23 Entrance Facilities TR containing EF must provide = (2)

## Footnote \* passive cabling components \* active devices required to interconnect campus EF to bldg cabling

7-23 Entrance Facilities multiple TR's required if = (2)

## Footnote \* cables length exceeds 295ft \* floor space exceeds 10,000 ft²

7–24 TR guidelines Q: 20,000 ft.² serve =

2 TR design

7-26 TR Full size TR = Small size TR =

## Footnote \* 480, 4 pr cable terminations \* 280, 4 pr cable terminations

7-26 Figure 7.1

10x8 = 5000ft or less

7–29 general TE's TE doors =

Hinged or removable

7–29 general TE's TE electrical power =

Minimum one dedicated

7–30 general TE TE lighting =

Minimum 500 lux (50foot-candles)

7–30 general TE TE size and spacing =

no greater than 3600 ft.²

7-33 Equipment Room (ER) Design ER's may contain:

## Footnote \* active equipment \* cross-connect \* BAS or other systems

7-34 Cross-connect facilites Most common backbone cabling = (4)

## Footnote \* balanced twisted-pair \* MM \* SM \* coax

7-35 ER initial assement ER are based on = (5)

## Footnote \* customer requirements \* telecom pathway locations \* AP and SP requirements \* environment/facility conditions and resources \* building requirements

7-36 locating the ER ER space dictated by =

## Footnote \* size and variety of systems \* size of area of room

7–37 ER access to cable pathways 3 examples of ER access to cable pathways =

\* 10th floor of a 20 floor \* Center single floor \* Center large campus

7-37 Delivery Access ITS designer should locate ER =

accessible for large delivery equipment

7-37 EF requirements AP space = (3)

## Footnote \* 4ft x 6 ft \* next to or in EF \* mesh or partition

7-41 Equipment space Equipment space =

10ft x 16ft

7-43 determining size based on area size Work areas =

.75 ft.²

7–43 determining size based on area served BAS devices =

.25 ft.²

7–43 determining size based on area served 200 work areas =

No less than 160 ft.²

7–43 determining size based on area served Q/A 255 work area x .75 = 191.25 55 BAS devices x .25 = 13.75

191 ft.² + 14 ft.² = 205 ft.² ER size

7–44 working clearances Equipment cabinets =

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

7–49 cable pathways entering ER Circular sleeves =

Easier to fire stop

7–49 cable pathway and ER Four 100mm (4trade size) =

One spare sleeve

7–49 cable pathway entering ER TR =

(4) 4 in add spare per 40,000 ft.²

7–49 cable pathways entering ER ER =

(5) 4in

7–49 cable pathway entering ER EF =

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

7–50 for the environment control requirements HVAC sensors=

5ft AFF

7–54 environment control requirements Temperature = Relative humidity = Heat dissipation =

\* 77°F \* 55% \* 5000 British thermal (Btu)

7-55 Floor requirement Instead of carpet =

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