81 lines
1.8 KiB
Markdown
81 lines
1.8 KiB
Markdown
---
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id:
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aliases:
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- das
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tags:
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- destiny/permanent
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- occupational/systems/standalone-systems
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- status/draft
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- type/guide
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title: Distributed Antenna Systems (DAS)
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---
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# Distributed Antenna Systems (DAS)
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## Info
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### Emergency Responder Radio Communication Systems (ERRCS)
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Relevant Standard: NFPA 1225
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### Cellular Systems
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Less common than ERRCS are "cellular DAS" systems
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## Sequence
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### 1. Preparation
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Complete [[fire-alarm-takeoff]] preparation and takeoff.
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### 2. Takeoff
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#### FACR to Every Elev. Shaft
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`FACR TO ELEV PIT = ...`
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Match Fire Alarm takeoff Length and Count
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#### FACR to Every Staircase
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`FACR TO STAIRWELL = ...`
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Match Fire Alarm takeoff Length and Count
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#### Stairwell Riser Every 2 Floors
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`STAIRWELL RISER EVERY 2 FLRS = 1 1/2" EMT (20') W/ 16X16X6 BOX`
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Create a Stairwell typical on every other floor
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#### FACR to Electric Room
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`FACR TO 2HR-RATED RM = 2" PVC40`
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Match Fire Alarm takeoff Length
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#### Electric Room Riser to Every Floor
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`2HR-RATED RM RISER TO EVERY FLR = 2" EMT (15') W/ 16X16X6 BOX`
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Takeoff in every Electric Room
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#### Top 2H Rated Room To Roof
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/`TOP 2HR RATED RM TO ROOF = 2" EMT W/ RMC WEATHERHEAD & IMC STUB`
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Use 15' or Height of ceiling on last building level
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#### Horizontal
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CORRIDORS EMT OH = 1 1/2" EMT W/ 16X16X6 BOX EVERY 80'
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CA.28.31.23
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CORRIDORS DECK = 1 1/2" PVC40, STUBBY, FLEX W/ 16X16X6 BOX EVERY 80'
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CA.28.31.21
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1-1/2 through corridors w/ 16x16x6 J-Box
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Length for every corridor/garage
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### 3. Review
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