73 lines
1.7 KiB
Markdown
73 lines
1.7 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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- occupational/takeoff
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- status/draft
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- type/guide
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title: Distributed Antenna Systems (DAS) Takeoff
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dg-publish: true
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---
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# Distributed Antenna Systems (DAS) Takeoff
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> [!important]
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> Complete [[emergency-systems-research]] before beginning takeoff.
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> [!info]
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> See [[emergency-communications-systems]] for information
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> about Emergency Responder Radio Communication Systems (ERRCS).
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> [!info] Cellular Systems
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> Less common than ERRCS are "cellular DAS" systems
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`COMMON ASSEMBLIES`/`FIRE ALARM & DAS SYSTEMS`/`DAS ASSEMBLIES`/...
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## Backbone
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### FACR to Every Elevator Shaft
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1. .../`FACR TO ELEV PIT = ...`
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* **Length** = _Match Fire Alarm takeoff Length_
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* **Count** = _Match Fire Alarm takeoff Count_
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### FACR to Every Staircase
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1. .../`FACR TO STAIRWELL = ...`
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* **Length** = _Match Fire Alarm takeoff Length_
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* **Count** = _Match Fire Alarm takeoff Count_
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### Stairwell Riser Every 2 Floors
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1. * `Area` = "Typical - Stairwells Building Even Levels"
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.../`STAIRWELL RISER EVERY 2 FLRS = ...`
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* **Count** = Each stairwell
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### FACR to Electric Room
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1. .../`FACR TO 2HR-RATED RM = ...`
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* **Length** = _Match Fire Alarm Terminal Cabinet takeoff Length_
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### Electric Room Riser to Every Floor
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1. .../`2HR-RATED RM RISER TO EVERY FLR = ...`
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* **Count** = Each Electric Room
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### Top 2H Rated Room To Roof
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Weatherhead for antenna. One per building.
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1. .../`TOP 2HR RATED RM TO ROOF = ...`
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* **Count** = 1
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* **Length** = Top level ceiling height to structure (minimum 15ft)
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## Horizontal
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> [!important]
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> Usually only for cellular DAS.
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> Confirm takeoff requirement with [[pdi-estimating#Bid Estimating|Bid]].
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1. .../`CORRIDORS ...`
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* **Length** = Length measured for every corridor/garage
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