ASHRAE-90.1-2022- - Page 339

Extracted Content

Table G3.7-1 Performance Rating Method Lighting Power Density Allowances and  Occupancy Sensor Reductions Using the Space-by-Space Method

Lighting Power

Common Space Types [a]

Atrium

Density,

W/ft [2]

<20 ft in height 0.0375 per foot in total height

 20 ft and  40 ft in height

Occupancy Sensor

Reduction [b]

10%

10%

40 ft in height 0.50 + 0.025 per foot in total height

Audience Seating Area

Auditorium 0.90 10%

Convention center 0.70 10%

Gymnasium 0.40 10%

Motion picture theater 1.20 10%

Performing arts theater 2.60 10%

In a sports arena 0.40 10%

All other audience seating area 0.90 10%

Banking Activity Area 1.50 10%

Classroom/Lecture Hall/Training Room

Preschool through 12th grade, laboratory, and shop classrooms 1.40 30%

All other classroom/lecture hall/training room 1.40 None

Computer Room 2.14 35%

Conference/Meeting/Multipurpose Room 1.30 None

Copy/Print Room 0.90 10%

Corridor 0.50 25%

Courtroom 1.90 10%

Dining Area

Bar/lounge or leisure dining 1.40 35%

Cafeteria or fast food dining 0.90 35%

Family dining 2.10 35%

All other dining area 0.90 35%

Electrical/Mechanical Room 1.50 30%

Emergency Vehicle Garage 0.80 10%

Equipment Room 1.20 10%

Food Preparation Area 1.20 30%

Guest Room 1.14 45%

Laboratory

Preschool through 12th grade, laboratory, and shop classrooms 1.40 30%

All other laboratory except in or as a classroom 1.40 10%

a. In cases where both a common space type and a building -specific space type are listed, the building -specific space type shall apply. b. For manual -ON or partial-auto-ON occupancy sensors, the occupancy sensor reduction factor shall be multiplied by 1.25. c. For occupancy sensors controlling individual workstation lighting, occupancy sensor reduction factor shall be 30%.

ANSI/ASHRAE/IES Standard 90.1-2022 (I-P) 337