---
id:
aliases: []
tags:
  - destiny/permanent
  - occupational
  - status/incomplete
  - type/guide
title: Pre-Takeoff Research
---
# Pre-Takeoff Research

## Requirement Precedence

In case of conflict:

Requirements of the plans and specs
are superseded by the terms of our proposal,
which are superseded by specific direction from the bid team.

<!--
Where NEC, IBC, and other applicable codes fall in this hierarchy
is subject to some debate.
-->

## Wiring Method Selection

See [[wiring-method-selection]].

## Voltage Drop

Unless explicitly stated in the plans or specs,
conductors are to be sized according to the relevant schedule,
_without respect for voltage drop_.

### Feeders and Unit Subfeeds

<!-- TODO: -->

### Branch Circuits

If voltage drop is to be considered in takeoff,
Use the table provided in the drawings.
If no table is provided, use the following:

| Wire Size | Max Length |
| ---------:| ----------:|
|       #12 |      100ft |
|       #10 |      200ft |
|        #8 |     >200ft |

## Wiring Device Selection

Wiring devices and their wall plates are a common target of [[gold-plating]].

* Device grade: commercial < specification
* Minimum rating for general-use receptacles: N5-15R < N5-20R
* Device form-factor: Duplex/toggle < Decora
* Device cover plate material: Plastic < nylon < aluminum < stainless steel
* Device cover plate size: standard < mid-size < oversize "jumbo"
* Device cover plate attachment: Standard < screwless
* Floor box material: Steel < cast iron
* Floor box cover plate material: plastic < brass < aluminum

> [!info] Search Terms Relevant to Wiring Device Selection 
> * "Decora"

> [!info] Example Specs Relevant to Wiring Device Selection[^1]
> * 26XXXX - Wiring Devices
> * 26XXXX - Boxes And Covers For Electrical Systems
> * 26XXXX - Lighting Control Devices
> * 26XXXX - Network Lighting Controls

[^1]: Specification section titles and scope may vary greatly between projects.
  The examples provided are not an exhaustive list.

## Emergency Systems

1. Find Fire Alarm plans (if present)
2. Locate the following rooms:
    * Fire Command Center (FCC)
    * Generator Room
    * Fire Pump Room
    * Elevator Control Rooms
    * Elevator Shafts
    * Stairwells