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LEED AP BD+C Ryan > Indoor Environmental Air Quality - IEQ > Flashcards

Indoor Environmental Air Quality - IEQ Flashcards

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1
Q

(IAQ - Minimum Indoor Air Quality Performance PRE) Where should the minimum outdoor air intake flow rate be found?

A

ASHRAE 62.1

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2
Q

(IAQ - Minimum Indoor Air Quality Performance PRE) How should mechanical air flow be monitored?

A
  • VAV systems, use a measurement device capable of measuring the minimum intake flow with +/-10% accuracy.
  • Constant volume systems, install current transducer or supply fan
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3
Q

(IAQ - Minimum Indoor Air Quality Performance PRE) How should Naturally Ventilated Spaces be monitored?

A

One of the following

  • Direct exhaust airflow measurement device
  • Automatic indication devices on all openings
  • CO2 monitors in each thermal zone (3-6’ off the ground)
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4
Q

(IAQ - Environmental Tobacco Smoke Control PRE) What rules should all projects follow to protect inhabitants from tobacco smoke?

A
  • Prohibit inside building
  • No smoking within 25’ of all entries, intakes, and operable windows
  • Signage for designated areas within 10’ of entry
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5
Q

(IAQ - Environmental Tobacco Smoke Control PRE) What considerations need to be made for a residential designated smoking area?

A
  • Remove the smoke from the building
  • Install deck-to-deck partitions
  • Negative pressure differential exhaust
  • Weatherstrip all doors and operable windows
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6
Q

(IAQ - Minimum Acoustical Performance PRE) What standard should be referenced when evaluating acoustic performance of materials?

A

ANSI S12.6

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7
Q

(IAQ - Minimum Acoustical Performance PRE) What is the maximum noise level for HVAC systems?

A

40 dBA

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8
Q

(IAQ - Minimum Acoustical Performance PRE) What considerations should be made for classrooms and core learning spaces that are less than 20,000sf?

A

Option 1 - Confirm ceiling finishes (100%) have Noise Reduction Coefficient of 0.7 or higher

Option 2 - All other sound-absorbent finishes exceed the total ceiling area in the room and have NRC of 0.7 or higher

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9
Q

(IAQ - Enhanced Indoor Air Quality Strategies) What are the requirements in the first Option when pursuing enhanced indoor air quality?

A
  • Use 10’+ long entryway systems
  • Prevent interior cross-contamination (exhaust hazards separately)
  • Filtration, use MERV 13
  • Natural Ventilation Design Calculation in CIBSE
  • Mixed-Mode Design Calculations in CIBSE
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10
Q

(IAQ - Enhanced Indoor Air Quality Strategies) What are additional air quality strategies in Option 2?

A
  • Exterior Contamination Prevention
  • Increase Ventilation
  • CO2 monitoring
  • Additional source control and monitoring
  • Natural Ventilation Room-by-Room Calculations
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11
Q

(IAQ - Low-Emitting Materials) What are the two options for calculating how many low-emitting materials are in the project?

A

1 - Product Category Calculations

2 - Budget Calculation Method

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12
Q

(IAQ - Low-Emitting Materials) What are the categories of materials in regards to IAQ?

A
  • Flooring
  • Ceilings
  • Walls
  • Thermal and acoustic insulation
  • Furniture
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13
Q

(IAQ - Indoor Air Quality Assessment) When should an indoor air quality assessment be performed?

A

After construction ends and the building has been completely cleaned. All interior finishes must be installed.

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14
Q

(IAQ - Indoor Air Quality Assessment) What is the key information for a Flush-out test before occupancy?

A
  • Supply air volume of 14,000cf per square foot of area
  • Maintain internal temperature of 60-80F
  • Relative humidity no higher than 60%
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15
Q

(IAQ - Indoor Air Quality Assessment) What is the key information for a Flush-out test during building occupancy?

A
  • Supply air volume of 3,500cf per square foot of area
  • Maintain internal temperature of 60-80F
  • Relative humidity no higher than 60%
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16
Q

(IAQ - Indoor Air Quality Assessment) What contaminants should be tested for in the air?

A
  • Formaldehyde
  • Particulates
  • Ozone
  • Total VOCs
  • Carbon Monoxide
17
Q

(IAQ - Thermal Comfort) What is the primary standard relating to HVAC and envelope that should be followed for thermal comfort?

A

ASHRAE 55

18
Q

(IAQ - Thermal Comfort) What are the secondary standards that could be followed for the HVAC and envelope?

A
  • ISO 7730

- CEN 15251

19
Q

(IAQ - Thermal Comfort) What thermal comfort guidelines should healthcare projects follow?

A
  • Provide thermal comfort controls for every patient room

- Provide thermal comfort controls for at least 50% of remaining individual occupant spaces

20
Q

(IAQ - Interior Lighting) What are the basic considerations for Lighting Control in individual occupant spaces?

A
  • Provided for at least 90% of these spaces

- At least 3 levels: On/Off/Midlevel (30-70%)

21
Q

(IAQ - Interior Lighting) What are the basic considerations for shared multioccupant spaces?

A
  • At least 3 levels: On/Off/Midlevel
  • Separate control for presentations or projections
  • Controls must be in direct line of site of the lights
22
Q

(IAQ - Interior Lighting) When designing for light quality, what considerations should be made for brightness of lights?

A
  • Use fixtures with a luminance of less than 2,500nits

- Direct lights between 45-90 degrees from nadir

23
Q

(IAQ - Interior Lighting) When designing for light quality, what considerations should be made for the color of lights?

A
  • Use a CRI of 80 or higher
24
Q

(IAQ - Interior Lighting) When designing for light quality, how long should a light source last?

A
  • 24,000 hours, for at least 75% of the lighting load
25
Q

(IAQ - Interior Lighting) When designing for light quality, what percentage of the total connected lighting load should be direct-only overhead?

A

25% or less

26
Q

(IAQ - Interior Lighting) When designing for light quality, how reflective should a project’s surfaces be?

A
  • 85% ceilings
  • 60% walls
  • 25% floors
  • 45% work surfaces
  • 50% movable partitions

*for 90% of regularly occupied floor area

27
Q

(IAQ - Daylight) What percentage of regularly occupied spaces should have glare-control devices

A

100%

28
Q

(IAQ - Quality Views) What percentage of all regularly occupied floor area must have a direct line of sight to the outdoors?

A

75%

29
Q

(IAQ - Quality Views) 75% of the regularly occupied floor area must have at least 2/4 of the following views:

A
  • Multiple lines of sight outdoors at least 90 degrees apart
  • Include 2: 1) flora, fauna, sky 2) movement 3) objects 25 feet from exterior
  • Views within the distance of 3x the height of the glazing
  • Views with a view factor of 3 or greater
30
Q

(IAQ - Quality Views) How much of the required outdoor views can an atrium count for?

A

30%

31
Q

(IAQ - Acoustic Performance) What are the high-level requirements of acoustic performance on most projects?

A
  • HVAC background noise
  • Sound Isolation
  • Reverberation Time
  • Sound Reinforcement/Masking
32
Q

(IAQ - Acoustic Performance) What are some key numbers for sound quality in a school classroom?

A
  • Background noise level of 35 dBA or less

- Exterior windows have STC rating of at least 35

33
Q

(IAQ - Acoustic Performance) What are the two options for healthcare projects?

A

1) Speech privacy, sound isolation, and background noise

2) Acoustical finishes and site exterior noise

LEED AP BD+C Ryan (10 decks)

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