Feature 03 Ventilation Effectiveness

• Part 2: Demand Controlled Ventilation
  • Threshold for applying feature: Use for spaces that are both:
    • Larger: > 500 sq. ft. (46.5 sq. m.)
    • Denser: > 25 people / 1000 sq. ft. (93 sq. m.)

  • Keep CO2 levels below 800 ppm.

Feature 13 Air Flush

• Part 1: Air Flush
  • 2 Options:
    • 1-flush routine:
      • Before occupancy: Flush with 14,000 cu. ft. of air / sq. ft. (4500 m3 of air per m2)
    • 2-flush routine:
      • Before occupancy: Flush with 3500 cu. ft. of air / sq. ft. (1066 m3 of air per m2)
      • After occupancy: Flush with 10,500 cu. ft. of air / sq. ft. (3200 m3 of air per m2)
        • Post-occupancy: Also need to provide fresh air: constant 0.3 CFM of air / sq. ft. (0.1 m3 / minute)

Feature 18 Air Quality Monitoring and Feedback

• Part 3: Environmental Measures Display
  • Realtime displays (1 display / 10,000 sq. ft. (930 m3) for occupants, measuring:
    • Temperature
    • Humidity
    • Carbon dioxide

Feature 23 Advanced Air Purification

• Part 2: Air Sanitation:
  • Threshold for applying feature:  Space has more than 10 regular occupants
  • Treat re-circulated air with either:
    • Ultraviolet radiation
    • Photocatalytic oxidation

Feature 26 Enhanced Material Safety

• Part 1: Precautionary Materials Selection
  • Meet materials standards for one (or more) of the following standards:
    • Living Building Challenge Materials Petal (all imperatives)
    • 25% of products by cost (including furniture and finishes) meet either of these standards (or a combination of these):
      • Cradle-to-Cradle Material Health Certification
      • GreenScreen