zmVault/electrical-takeoff.md

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Electrical Takeoff	occupational/takeoff status/draft type/guide	takeoff-scripts	electrical takeoff

Electrical Takeoff

Important

Complete pre-takeoff-research, including wiring-method-selection and wiring-device-research, before beginning takeoff.

Tip

Use heating-designations for uncertain scope.

Garage

In conventional slab garages, use ENT and PVC as permitted.

In precast slab garages, use EMT.

Receptacles

Important

Receptacle symbols are not standard. Always check the electrical legend.

Floor Boxes

COMMON ASSEMBLIES/FLOOR BOXES/...

Poke-Thru's

Use suitable floor box assembly, delete floor box items, add ITEM DATABASE/WIRING & SYSTEM DEVICES/FLOOR BOXES & FITTTINGS/GENERIC - FLOOR BOXES & ACCESS/POKE-THRU W/ DUPLEX RECEPTACLE

Homeruns

Lighting Homeruns

• Area = "XX - Level XX Building"
• Phase = "Building - Back of House (BOH)"

Takeoff homeruns in Building breakdowns, even where serving Amenity spaces.

Mechanical Connections

General

COMMON ASSEMBLIES/MECHANICAL CONNECTIONS .../...

When using length-based assemblies use adders per feeders-takeoff.

%% TODO

PVC Connection Assemblies

Flex

wiring-method-selection#Liquidtight Flex

%%

Stair Pressurization Fans

Assume branch circuit conductors must be protected per fire-resistive-wiring-methods-takeoff.

Roof Mounted Equipment

Unit Condensing Units

Homeruns

• Area = Match unit

.../CONDENSOR HOME RUNS

• Horizontal: Distance from load center to FCU. (~50ft expected)

• Vertical: floor-to-floor distance from FCU to CU

Level	Horizontal	Vertical	Length
Level 01	150	40	190
Level 02	150	30	180
Level 03	150	20	170
Level 04	150	10	160

Connections

• Area = Match CU (usually roof)

.../CU CONDENSER SLEEVE W/ FLEX - NO HMRN WIRE

NO SLEEVE: Routed through a "doghouse" (a large weatherproof opening) with several other feeds. Used where drilling openings for individual sleeves would be impractical.

PVC SLEEVE, EMT SLEEVE: Routed up through the roof, (optionally through a disconnect) with flex to the equipment.

Equipment Racks

Max 20 disconnects per rack

DISTRIBUTION/TRAPEZE RACK SUPPORT .../...

Trash Chute

1. Horizontal:

   COMMON ASSEMBLIES/MECHANICAL CONNECTIONS .../...

   • Length = Length per drawings, 100ft if not shown.

2. Vertical (Riser):

   • Area = "Typical - Building All Levels"

   Takeoff: COMMON ASSEMBLIES/MISC ASSEMBLIES/TRASH CHUTE RISER CIRCUIT...

   • Length = average floor to floor height

Fire/Smoke Dampers

fire-alarm-takeoff#Fire/Smoke Dampers (FSD's)

Clubline Raceway

Raceway Systems - CRG

Clubline Raceway, also called CRG Raceway, is a glorified cable management trough. It is not a nfpa-70_376, so conductors must be run in a nfpa-70_national-electric-code#Chapter 3 Wiring Methods and Materials wiring method.

Count receptacles normally, using ==surface-mount EMT assemblies==.

Create a temporary item for the raceway itself.