Indoor Environmental Quality Flashcards
(31 cards)
What are the three (3) basic methods for ventilating buildings?
Mechanical Ventilation (active ventilation), Natural Ventilation (passive ventilation), Mixed-Mode Ventilation (both mechanical & natural ventilation)
What is the distance ALL naturally ventilated spaces must be in proximity to an operable wall or roof opening to the outdoors?
25 feet
What is the typical permitted distance for Environmental Tobacco Smoke (ETS) Control (IEQ Prerequisite 2)?
25 feet
What is the maximum background noise level allowed for HVAC equipment in classrooms required for Minimum Acoustical Performance (IEQ Prerequisite 3)?
40 dBA
What acoustic issues need to considered for Acoustic Performance?
HVAC background noise Sound transmission Reverberation time
Sound reinforcement and masking systems
At what % must an outdoor air delivery monitoring system generate an alarm for insufficient airflow values or carbon dioxide?
10% variation from design values
What is considered a densely occupied space when monitoring CO2 concentrations for mechanically ventilated spaces?
25 people or more per 1,000 square feet
For increased ventilation what % must mechanically ventilated spaces increase outdoor air ventilation rates required by ASHRAE 62.1?
30% above rates required by ASHRAE 62.1
What filtration media is required for Enhanced IAQ strategies?
MERV 13 or F7 (CEN Standard EN 779-2002)
How does a project confirm natural ventilation is an effective strategy?
Follow the CIBSE flow diagram.
What is required for Construction IAQ Management Plan?
Meet or exceed SMACNA guidelines
Protect absorptive materials stored on-site
Use MERV 8 (F5) filters on operating air-handlers
Prohibit smoking in the building and within 25’ (7.5 meters) of entrances
What are the five (5) areas SMACNA standards for recommended IAQ Control Measures?
HVAC protection Source control Pathway interruption Housekeeping Scheduling
What are the two (2) Options for Indoor Air Quality Assessment?
Option 1. Flush-out
Option 2. Air testing
What are the two (2) building flush-out paths a project can consider for IAQ Assessment?
14,000 Cubic Feet of Outdoor Air per SF of Floor Area @ 60°F & 60% relative humidity OR 3,500 Cubic Feet of Outdoor Air per SF of Floor Area @ Minimum Rate of .30 (cfm) until reaching 14,000 Cubic Feet per SF
At what height must air samples be collected at for IAQ Assessment?
3 to 6 feet (900 to 1,800 mm) above floor to represent the breathing zone
What are the general emissions evaluation standards associated with low-emitting adhesives and sealants?
What are the general emissions evaluation standards associated with low-emitting adhesives and sealants?
How long must permanent entryway systems be in the primary direction of travel for Enhanced IAQ Strategies?
10’ (3 meters) in the primary direction of travel at regularly used exterior entrances.
What MERV rating must mechanically ventilated buildings design HVAC systems to filter supply air prior to occupancy?
MERV 13 (F7) or higher
What types of rooms would require negative air pressure, self-closing doors, and deck-to-deck partitions or hard-lid ceilings for interior cross-contamination prevention?
Garages
Houskeeping and laundry areas
Copying and printing rooms
What % of the building occupants must have individual lighting controls for Interior Lighting?
At least 90% of individual occupant spaces and 100% of shared multi-occupant spaces
How many modes must lighting systems be able to operate in?
3: On, off, and mid-level
What % of the building occupants must have individual comfort controls for Thermal Comfort?
At least 50% of individual occupant spaces and 100% for all shared multi-occupant spaces
What standards must be followed for thermal comfort design?
Option 1. ASHRAE Standard 55-10
OR
Option 2. IOS and CEN Standards
What are the six (6) primary comfort factors associated with ASHRAE 55?
Metabolic Rate, Clothing Insulation, Air Temperature, Radiant Temperature, Air Speed, Humidity
