87 lines
2.2 KiB
Markdown
87 lines
2.2 KiB
Markdown
---
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id:
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aliases: []
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tags:
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- destiny/permanent
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- occupational
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- status/incomplete
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- type/guide
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title: Pre-Takeoff Research
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---
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# Pre-Takeoff Research
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## Requirement Precedence
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In case of conflict:
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Requirements of the plans and specs
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are superseded by the terms of our proposal,
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which are superseded by specific direction from the bid team.
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<!--
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Where NEC, IBC, and other applicable codes fall in this hierarchy
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is subject to some debate.
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-->
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## Wiring Method Selection
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See [[wiring-method-selection]].
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## Voltage Drop
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Unless explicitly stated in the plans or specs,
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conductors are to be sized according to the relevant schedule,
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_without respect for voltage drop_.
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### Feeders and Unit Subfeeds
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<!-- TODO: -->
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### Branch Circuits
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If voltage drop is to be considered in takeoff,
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Use the table provided in the drawings.
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If no table is provided, use the following:
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| Wire Size | Max Length |
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| ---------:| ----------:|
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| #12 | 100ft |
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| #10 | 200ft |
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| #8 | >200ft |
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## Wiring Device Selection
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Wiring devices and their wall plates are a common target of [[gold-plating]].
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* Device grade: commercial < specification
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* Minimum rating for general-use receptacles: N5-15R < N5-20R
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* Device form-factor: Duplex/toggle < Decora
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* Device cover plate material: Plastic < nylon < aluminum < stainless steel
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* Device cover plate size: standard < mid-size < oversize "jumbo"
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* Device cover plate attachment: Standard < screwless
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* Floor box material: Steel < cast iron
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* Floor box cover plate material: plastic < brass < aluminum
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> [!info] Search Terms Relevant to Wiring Device Selection
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> * "Decora"
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> [!info] Example Specs Relevant to Wiring Device Selection[^1]
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> * 26XXXX - Wiring Devices
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> * 26XXXX - Boxes And Covers For Electrical Systems
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> * 26XXXX - Lighting Control Devices
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> * 26XXXX - Network Lighting Controls
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[^1]: Specification section titles and scope may vary greatly between projects.
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The examples provided are not an exhaustive list.
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## Emergency Systems
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1. Find Fire Alarm plans (if present)
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2. Locate the following rooms:
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* Fire Command Center (FCC)
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* Generator Room
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* Fire Pump Room
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* Elevator Control Rooms
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* Elevator Shafts
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* Stairwells
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