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

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This note should be arranged chronologically:
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> [!important] 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 are superseded by the terms of our proposal,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 which are superseded by specific direction from the bid team.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.
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> [!aside] "Plans & Specs"
> The oft repeated "per plans and specs" is a gross oversimplification:
> The RFP documents are more likely than not
> to have one or more irreconcilable contradictions,
> or some instance of [[gold-plating]] too egregious to accept.
> When ConEst takes of a project "per plans and specs",
> we are taking off _Bid's interpretation_ of the RFP documents,
> which they must be able to articulate.

Seek to use the cheapest method,
as determined by Senior Construction Estimator
and Database Administrator,
as allowed for the situation.

* [[wiring-method-selection]]
* [[wiring-device-research]]
* [[emergency-systems-research]]
* [[low-voltage-raceway-selection]]

## General

1. Read about the project specifications and construction type
2. Locate Equipment Schedules

Read about the project specifications and construction type:
* Deck thickness
* Wiring methods
* Conductor material
* Wire terminations (set-screw acceptable or compression required?)

Locate:
* Riser Diagram
* Feeder Schedule (if present)
* Main Electrical rooms and panel locations

1. Locate Unit panels and relevant keynotes
    * bus amps

2. Read about the project specifications and construction type
  * partition framing (wood or metal studs)
  * stud depth
  * wiring methods (NM or MC)
  * wiring device plates (decora or standard)
  * wiring device specs (are 15A devices allowed or minimum N5-20R)
  * equipment (20A Kitchen and bath)

Low Voltage
1. Locate Proposal/Scope of Work. Determine ownership and takeoff responsibility:
    * Cabling
    * Conduit & Pathways
    * Sleeving
2. In the drawings, locate:
    * Floor plans where LV scope is shown
    * LV Details
3. Read about the project specifications and construction type
4. Fill out OneNote


## 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_.

### Subfeeds

1. Read about the project specifications and construction type
  * Delivery Method: (Plans & Specs, Design Build, Design Assist, Preliminary Budget)
  * Corridor Ceiling type

2. In the drawings, locate:
  * Unit Panel Schedules
  * Unit Load Calculations
  * Riser Diagram
  * Subfeed schedule (if present)

<!--
TODO: Create flow chart for wiring methods.
Some cases to mention:
* Deck thickness (minimum 3x conduit outer diameter)
* Renovations (may not be able to run in slab)
-->