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tags, title
tags title
occupational/takeoff
status/draft
type/guide
Fixture Designations

Fixture Designations

This note details creation of fixture designations for use in fixtures-takeoff.

Name Format

There is no standard convention for fixture designation names in the conest-body-of-knowledge. The best any estimator can do is be internally consistent.

My own preference is similar to

A - Surface (Pendant) = 2.0hrs - #12 MC+LV 20ft,

described by the pseudo-regular-expression below:

<phase-abbr> - <assembly>(: <assembly-subtype>)?( \(<comment>\))?( = <fixture-labor>)? <wiring-method> <branch-length>ft

Phase Abbreviation (<phase-abbr>)

Assembly (<assembly>)

luminaire-types

  • "Surface" - Assembly includes a junction box
  • "Recessed" - Assembly does not include a junction box

Assembly Subtype (<assembly-subtype>)

Comment (<comment>)

In contrast to Assembly Subtype, Comment reflects a distinction between fixture types or use case which does not affect the contents of the designation. That is, Surface, Surface (Sconce), and Surface (Pendant)

Fixture Labor (<fixture-labor>)

Fixture Type Labor
Paddle Fan 1.5 hr/ea.
Pendant 1-4 hr/ea.
Tape 0.5 hr/6ft
Site Poles 1.5 hr/ea.
Festoon 2.0 hr/ea.
All Others 1.0 hr/ea.

FIXTURES/FIXTURE LABOR/FIXTURE LABOR 1HR

Wiring Method (<wiring-method>)

Conduit/Cable Type

Wire Size

Case Wire Size
Site/Courtyard #10
Garage #10
NM Cable #14*
All Others #12

*Minimum #12 in kitchens and bathrooms.

Dimming Conductors

Branch Length (<branch-length>)

Case Standard Length
Site/Courtyard 50ft
Garage 50ft
BOH 40ft
Corridors 40ft
Interior Amenity 40ft
Office/Retail 50ft
Exterior Amenity 50ft
Units 20ft
Undercabinet Fixtures 10ft
Stairwells 20ft
Kitchen ?

Reduce as appropriate.

Order

Use empty designations to separate phases.

[!example]

# Stairwells
BS - Surface = 1.0hrs - #12 EMT 20ft
# Building
## Units - Key
UK - Surface = 1.0hrs - #12 MC+LV 20ft
UK - Surface = 1.5hrs - #12 MC+LV 20ft
UK - Surface (Pendant) = 2.0hrs - #12 MC+LV 20ft
UK - Surface (J-Box For Future Fixture) = 1.0hrs - #12 MC+LV 20ft
UK - Recessed = 1.0hrs - #12 MC+LV 20ft
_
## Units - Residential
UR - Surface (Tape) = 1.0hrs - #12 MC+LV 25ft
UR - Surface (Wall) = 1.0hrs - #12 MC+LV 25ft
...

Content

Garage

Use ENT assemblies unless forbidden by spec.

Case Subassembly Path (FIXTURE ACCESSORIES/PVC/ENT ASSEMBLIES/...)
Conventional Slab .../GARAGE FIXTURE ENT W/#10 - STEEL OCT RING
Precast/I-Beam .../GARAGE FIXTURE W/T ROD ENT W/#10 - STEEL OCT RING

If PVC is required, use following assemblies:

Case Subassembly Path (FIXTURE ACCESSORIES/PVC/ENT ASSEMBLIES/...)
Ceiling .../... - SLAB BOX / 45 DEG STUBBY
Wall .../... - STL BOX & TILE RING / 45 DEG STUBBY/ ENT DROP

Surface Mount

[!info] Surface Mount Fixtures

  • Wall Mount
    • Wall Pack
    • Sconce
    • Swing Arm
  • Pendant
  • Linear
  • Tape
  • Track
Wiring Method Subassembly Path
NM Cable NM ASSEMBLIES/RND BOX BAR HNGR...
MC Cable MC ASSEMBLIES/SQ BOX, ROUND P RING & MNTG BRKT...
PVC in Ceiling PVC/ENT ASSEMBLIES/... - SLAB BOX / 45 DEG STUBBY
PVC in Wall PVC/ENT ASSEMBLIES/3/4" PVC W/ 3#12 - STL BOX/TILE RING
EMT EMT ASSEMBLIES/... - SQ BOX & ROUND P RING

Note

Use lighting control cable assemblies in Amenity areas

Tape Lighting

Also called "cove" or "strip" lighting, however those terms are less specific and potentially confusing.

Use item FIXTURE LABOR 1/2HR and change Fct 1 to match the calculated labor (1 hour per 12 feet).

Note

Tape lighting length is limited by the "max power length" of the model (usually measured in millimeters). Max power length is usually 5000-15000mm (~16-49ft) depending on luminous output and voltage.

A reasonable heuristics is

  • 12V strips: 5m (16.4ft)
  • 24V strips: 10m (32.8ft)

Separate these fixtures by labor, not length

*** Back of House ***
B - Surface (Tape) = 1.0hr (0-17ft) - #12 MC 40ft
_
*** Interior Amenity ***
IA - Surface (Tape) = 1.0hr (00-17ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 2.0hr (18-29ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 3.0hr (30-41ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 4.0hr (42-53ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 5.0hr (54-65ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 6.0hr (66-77ft) - #12 MC+LV 40ft
IA - Surface (Tape) = 7.0hr (78-89ft) - #12 MC+LV 40ft

Recessed

[!info] Recessed Fixtures

  • recessed downlight
  • recessed linear
  • wall grazer
  • troffer
Wiring Method Subassembly Path
NM Cable NM ASSEMBLIES/HI HAT - ...
MC Cable MC ASSEMBLIES/HI HAT - ...

For crowded puck light areas: measure length between fixtures, round up to the nearest 5ft

Note

"HI HAT" refers to a recessed can fixture.

Undercabinet Fixtures

Wiring Method Subassembly Path
NM Cable NM ASSEMBLIES/UNDER CABINET - ...
MC Cable MC ASSEMBLIES/UNDER CABINET - ...

Note

Takeoff 2 fixtures if jumping over oven

Paddle Fans

Wiring Method Subassembly Path
NM Cable NM ASSEMBLIES/RND BOX BAR HNGR...
MC Cable MC ASSEMBLIES/FAN RATED OCT BOX W/ BAR HNGR - ...
PVC PVC/ENT ASSEMBLIES/... - SLAB BOX / 45 DEG STUBBY

Guardrail Fixtures

[!info] Designation Subassemblies FIXTURE ACCESSORIES/COURTYARDS & LANDSCAPE/ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40 - ...

Stairwells & Elevators

[!info] Designation Subassemblies

  1. PVC/ENT ASSEMBLIES/... - SLAB BOX / 45 DEG STUBBY

Facade

  • Phase = "Facade"

Length and Labor will be more than a normal fixture in BOH/Amenity

Fixture Type Labor
Non-Linear 2hrs
Linear See #Tape Lighting

[!info] Designation Subassemblies

  1. 3/4" PVC W/ 3#10 - STL BOX & TILE RING / 45 DEG STUBBY/ ENT DROP
    • Length per Unit = Distance to panel

Porte Cochere (Drive up Area)

Create its own breakout in WBS, and phase in accubid

Site & Courtyard

Important

Coordinate with landscape drawings

Breakdowns

  • System = "FML - Site Fixtures Material & Labor"

Pole Lights

[!info] Designation Subassemblies

  1. FIXTURE ACCESSORIES/SITE POLE ASSEMBLIES/...

Add subassemblies for stub-outs, pole, base, and grounding as appropriate.

Festoon Lighting

[!info] Also Known As

  • string lighting
  • market lighting
  • catenary lighting

[!info] Designation Subassemblies

  1. FIXTURE LABOR/FIXTURE LABOR 2HR

  2. FESTOON & ROOF ASSEMBLIES/FESTOON CABLE HANGER & EYE BOLTS - LENGTH

    • Length per Unit = Light string length

  3. COURTYARDS & LANDSCAPE/ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40 - ...

    • Length per Unit = Distance to panel + 15ft

Other Fixture Types

Fixture Type Subassembly Path (FIXTURE ACCESSORIES/COURTYARDS & LANDSCAPE/...)
Step Light .../STEP FIX, 3/4" CONDUIT - PVC40 - ...
Bollard .../BOLLARD, 3/4" CONDUIT - PVC40 - ...*
Up-light .../PERMA POST, 3/4" CONDUIT - PVC40 - ...
In-grade up-light .../3/4" CONDUIT - PVC40, IMC Elbow, ...
Fixtures built into cabanas/pergolas .../ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40 - ...
Handrail light .../ALUM BOX W/ FLEX FIX, 3/4" CONDUIT - PVC40, IMC ELBOW - ...

*If we don't own concrete, delete pre-cast bollard base from assembly

FAA Lighting

[!info] Designation Subassemblies

  1. FIXTURE LABOR/FIXTURE LABOR 1HR
  2. FESTOON & ROOF ASSEMBLIES/Aircraft Warning, 3/4" Conduit GRC/PVC 2#10, 1#10G
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