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Indoor Environmental Quality (IEQ) Flashcards

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1
Q

At what heights should C02 sensors be placed at for breathing zone requirements?

A

Between 3 feet and 6 feet above the floor.

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2
Q

What is the typical permitted
distance for Environmental
Tobacco Smoke (ETS) Control
(IQ Prerequisite 2)?

A

25’ feet

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3
Q

What is the maximum background
noise level allowed for HVAC
equipment in classrooms required
for Minimum Acoustical
Performance (IQ Prerequisite 3)?

A

40 dBA

Exterior noise: 60dBA during school hours

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4
Q

What acoustic issues need
to considered for Acoustic
Performance?
(Causes & means of sound movement)

A

HVAC background noise
Sound transmission
Reverberation time
Sound reinforcement and
masking systems

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5
Q

At what % must an outdoor air
delivery monitoring system
generate an alarm for
insufficient airflow values or
carbon dioxide?

A

10% variation from design
values

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6
Q

What is considered a densely
occupied space when
monitoring CO2
concentrations for
mechanically ventilated
spaces?

A

25 people or more per 1,000
square feet

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7
Q

For increased ventilation
what % must mechanically
ventilated spaces increase
outdoor air ventilation rates
required by ASHRAE 62.1?

A

30% above rates required by
ASHRAE 62.1

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8
Q

What filtration media is required
for Enhanced IAQ strategies?

A

MERV 13 or F7 (CEN Standard
EN 779-2002)

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9
Q

How does a project confirm
natural ventilation is an
effective strategy?

A

Follow the CIBSE flow diagram.

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10
Q

What is required for
Construction IAQ
Management Plan?
(Actions during construction)

A

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

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11
Q

What are the five (5) areas
SMACNA standards for
recommended IQ Control
Measures?
(Hint: Strategies for controlling air contamination)

A

-HVAC protection
-Source control
-Pathway interruption
-Housekeeping
-Scheduling

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12
Q

What are the two (2) Options
for Indoor Air Quality
Assessment?
(Hint: After construction and before occupancy)

A

Option 1. Flush-out,
Option 2. Air testing

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13
Q

What are the two (2)
building flush-out paths a
project can consider for IAQ
Assessment?

A

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

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14
Q

At what height must air samples
be collected at for lAQ
Assessment?

A

3 to 6 feet (900 to 1,800 mm)
above floor to represent the
breathing zone

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15
Q

How long must permanent
entryway systems be in the
primary direction of travel
for Enhanced IAQ
Strategies?

A

10’ (3 meters) in the primary
direction of travel at
regularly used exterior
entrances.

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16
Q

What MERV rating must
mechanically ventilated
buildings design HVAC
systems to filter supply air
prior to occupancy?

A

MERV 13 (F7) or higher

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17
Q

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?

A

Garages
Houskeeping and laundry areas
Copying and printing rooms

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18
Q

What % of the building
occupants must have
individual lighting controls
for Interior Lighting?

A

At least 90% of individual
occupant spaces and 100% of
shared multi-occupant spaces

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19
Q

How many modes must lighting
systems be able to operate in?

A

3: On, off, and mid-level

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20
Q

What % of the building
occupants must have individual
comfort controls for Thermal
Comfort?

A

At least 50% of individual
Occupant spaces and 100% for
all shared multi-occupant
spaces

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21
Q

What standards must be
followed for thermal comfort
design?

A

Option 1. ASHRAE Standard
55-10
OR
Option 2. I0S and CEN
Standards

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22
Q

What are the six (6) primary
comfort factors associated
with ASHRAE 55?
(Natural factors that affect comfort)

A

Metabolic Rate, Clothing
Insulation, Air Temperature,
Radiant Temperature, Air
Speed, Humidity

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23
Q

What are the three (3) options
to achieve IQ Credit
Daylight?
( hint: methods of showing daylight)

A

Option 1. Simulation: Spatial daylight autonomy (sDA) & annual sunlight exposure (ASE)
Option 2. Simulation with computer model: Luminance calculations
Option 3. Measurement

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24
Q

What % of regularly
occupied floor area must
achieve daylight
illumination for IQ Credit
Daylight?

A

75% = 1 Point

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25
Q

What are the four kinds of
views?

A

-Multiple lines of sight to vision glazing in different directions at least 90 degrees apart
-Views that include at least two of the following:
(1) flora, fauna, or sky; (2) movement; and (3) objects at least 25 feet (7.5 meters) from the exterior of the glazing
-Unobstructed views located within the distance of three times the head height of the vision glazing
-Views with a view factor of 3 or greater

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26
Q

What % of regularly occupied
floor area must have direct line
of sight to the outdoors via
vision glazing for IEQ Credit
Views?

A

75% = 1 Point

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27
Q

Views into the interior atria
may be used to meet what
percent of the required area
for Quality Views?

A

30%

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28
Q

What dBA must background
noise from HVAC equipment
be reduced to for Minimum
Acoustic Performance?

A

40 dBA

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29
Q

What two simulations are
required for Daylighting,
Option 1 Simulation?

A

sDA and ASE

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30
Q

What is the threshold for an
sDA simulation?

A

300 lux for 50% of the
hours between 8 AM and 6
PM local time for a full
calendar year

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31
Q

What is the threshold for an
ASE simulation?

A

1,000 lux of direct sunlight
for more than 250 hours of
the year between 8 AM and
6 PM local time for a full
calendar year

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32
Q

When do the daylight
simulations for Option 2
Simulation: Illuminance
calculations occur?

A

9 AM on the first equinox
(March 21 or September 21) and
3 PM on the second equinox

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33
Q

At what height should
daylight measurements be
taken?

A

30 inches (750 mm) above the
finished floor for the default
workplane height

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34
Q

For IEQ-P: Environmental Tobacco Smoke Control, Signage must be posted within ______ distance of all building entrances indicating the no smoking policy.

A

10ft (3 meters)

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35
Q

For IEQ-P: Environmental Tobacco Smoke Control for Schools, Signage must be posted at ______ indicating the no smoking policy.

A

Property Line

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36
Q

For IEQ-Credit: Daylight, Simulation is carried out based on ‘regularly occupied floor area’ for all BD+C categories except?

A

Healthcare

Health care products should use the perimeter area determined on the EQ. Credit column quality views.

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37
Q

IEQ- Credit: Quality Views. Moveable furniture and partitions may be excluded from the calculations. True or false?

A

True

38
Q

6 primary factors that affect thermal comfort?
(Hint: Natural)

A

Surface temperature
Air temperature
Humidity
Air movement
Metabolic rate
Clothing

39
Q

Which school spaces are excluded from EQ-P Minimum Acoustical Performance requirements?

A

Natatoriums, auditoriums, music performance spaces, teleconferencing rooms, special education
rooms

40
Q

3 monitoring strategies that can be implemented for naturally ventilated spaces to meet EQ-P
Minimum Indoor Air Quality Performance?

A

Direct exhaust airflow measurement devices
-Alarmed openings for naturally ventilated spaces
-Carbon dioxide monitors

41
Q

Kiosk located on public sidewalk 25 ft from main entrance.Outside project boundary. Is smoking
allowed around the kiosk if it is owned by the project owner and project is pursuing LEED AP?

A

No
No smoking zone of 25ft from any opening still applies in this situation.

42
Q

List exterior noise mitigation design strategies for school projects?

A

Site barriers:
Earthen berms
Site walls
Architectural barriers:
Other building spaces
Courtyards
Architectural material barriers:
Dense wall construction
Offset studs
Construction best practices:
Sealants
Window door gaskets

43
Q

Design strategies that Healthcare project can implement to meet the requirements for options EQ-
C Acoustic Performance?

A

Separate patient rooms from treatment areas, media areas, and staff areas.
Include buffer spaces in the building program.
Use partial-height barriers in open-plan areas and isolating partitions in close-in areas.
Install sound-absorptive finishes.
Address mechanical system noise and medical equipment noise.
Install interior vision panels.
Install close-fit doors with gaskets where appropriate.

44
Q

List background noise reduction strategies?

A

Locate HVAC above non occupies spaces.
Select quite HVAC and run low.
Change filter regularly.
Locate sound attenuators at VAV terminal boxes.
Install vibration isolators on rotating vibrating equipment.
Providing duct attenuation.
Designing ductwork to minimize “cross-talk” from one room to another.
Controlling airflow velocity in the ductwork to minimize turbulence noise.

45
Q

Three ways of verifying sound isolation for EQ-C Acoustic Performanc

A

Published data
Calculation
Measurement

46
Q

What are two common approaches to providing adequate speech privacy in healthcare facilities?

A

Reduce sound transmission between spaces by installing improved partition assemblies and
partial-height partitions and sound-absorptive room finishes.
Provide an adequate level of continuous background sound.

47
Q

When should project team schedule Indoor Air Quality Testing to meet EQ-C Indoor Quality assessment?

A

after construction, punch, and final clean are complete.

48
Q

Healthcare facility has 10 private offices for doctors, 10 Nurses stations, 20 administrative work
stations, 4 conference rooms, and 50 private patient rooms. How many spaces must have individual controls for 3 lighting levels if the project team is pursuing option 1. Lighting Control of
EQ-C Interior Lighting.

A

36 offices, 45 private patient rooms, 4 conference rooms
90% of individual occupant spaces in staff areas
90% of patient positions
100% share multi-occupant spaces

49
Q

What should a project team do if they are pursuing EQ-C Low-Emitting Materials but they do not want to pursue the budget calculation option?

A

Team should specify low-emitting or nonemitting products that are compliant in at least 2 product categories. The minimum threshold of compliance is 90% or 100% based on product type?

50
Q

List 6 assemblies that budget calculation method in EQ-C Low-Emitting Materials organizes building interiors for Healthcare and School projects.
(Hint: Interior parts of bldg)

A

Flooring
Ceilings
Walls
Thermal and Acoustic Insulation
Furniture
Exterior Applied Products

51
Q

What is the maximum HVAC background noise level allow in classrooms and core learning spaces to meet EQ-C Acoustic Performance in elementary school?

A

35 dba

Note: Also the STC (Sound Transmission Class) Rating of Exterior Classroom windows should be at least 35.

52
Q

what is a STC rating?

A

weighted value for capacity of partition to attenuate airborne sound. An STC rating is calculated by averaging the transmission loss through an entire assembly.

53
Q

List acoustical concerns that the design team for a Healthcare project should address to achieve 2 points for EQ-C Acoustic Performance.
(Hint: Considerations when designing for noise/acoustics)

A

Speech privacy
Sound Isolation
Background Noise
Acoustical Finishes
Site Exterior Noise

54
Q

Team pursuing EQ-P Minimum Indoor Air Quality. Performance for an office building minimum ventilation requirements with ample fresh air for all spaces other than the cafeteria. What are the next steps?

A

Minimum Indoor Air Quality Performance cannot be met unless all occupied spaces meet the minimum ventilation requirements.
The project team must revise the design to meet the required ventilation rates and redo the calculations. Each occupied space must meet the required ventilation rates.

55
Q

3 noise concerns for school projects addressed by EQ-P Minimum Acoustic Performance?

A

HVAC Background Noise
Exterior Noise
Reverberation Time

56
Q

Which building types may smoking be allowed indoors?

A

In residential projects and healthcare facilities for clinical and recovery reasons.

57
Q

What are three strategies for compartmentalization?
(Isolating multi-unit bldg from indoor/outdoor smoking)

A

Weather-strip all exterior doors and operable windows.
Weather-strip all doors leading from residential units into common hallways.
Minimize uncontrolled pathways for the transfer of smoke and other indoor air pollutants between residential units:
Sealing penetrations in the walls, ceilings, and floors
Sealing vertical chases adjacent to units.

58
Q

Top 2 options team may pursue to meet reverberation time requirements for EQ-P Minimum Acoustic Performance for 10x20x10 classroom?

A

1) Total surface area of acoustic wall panels, ceiling finishes, and other sound-absorbent finishes must equal or exceed total ceiling area minus diffusers, grills and lights.
2) Reverberation time requirements must be met as specified in ANSI Standard S12.6-2010.

59
Q

What are 2 common approaches for providing adequate speech privacy in a healthcare facility?

A

Reduce sound transmission between spaces by installing improved partition assemblies and partial height partitions and sound-absorptive room finishes.
Provide an adequate level of continuous background sound.

60
Q

What are the acceptable entryway systems that a project team can use to meet EQ-C Enhanced Indoor Air Quality Strategies?
(Hint: on the floor)

A

Permanently installed grates, grilles, slotted systems, rollout mats, and other materials manufactured as entryway systems with equivalent or better performance.

61
Q

Project team is identifying strategies to achieve a second point by pursuing Option 2 Additional Enhanced IQ Strategies of EQ-C Enhanced Indoor Air Quality Strategies. What are strategies that the project team may select if the project has a mixed-mode ventilation system?

A

May select one of the following:
-Exterior Contamination Prevention
-Increased Ventilation
-Additional Source Control and Monitoring
-Natural Ventilation room-by-room calculations

62
Q

Mechanical engineer is location CO2 monitors in all densly occupied areas to meet EQ-C Enhanced Indoor Air Quality Strategies. Where should CO2 monitors be located in the densely occupied areas?
(Hint: vertically)

A

Within breathing zone between 3ft and 6ft above floor.

63
Q

What are the documentation requirements for CO2 monitoring strategies to meet EQ-C Enhanced Indoor Air Quality Strategies?

A

List of densely occupied spaces, space types, and design CO2 concentrations: A floor plan showing sensor locations and narrative describing CO2 Setpoints.

64
Q

What is exemplary performance criteria for EQ-C Enhanced Indoor Air Quality Strategies?

A

Achieve both Option 1 and Option 2 and incorporate an additional Option 2 strategy.

65
Q

Which IEQ-Cs are eligible for exemplary performance?
(Hint: only 3)

A

EQ-C Enhanced Indoor Air Quality Strategies
EQ-C Low Emitting Materials
EQ-C Quality Views

66
Q

Exemplary performance criteria for EQ-C Low Emitting Materials?

A

Option 1 Earn all points and reach 100% of products.
Option 2 Reach 100% of products

67
Q

List three characteristics that products can have to meet the requirements for Option 1 Product Category Calculations of EQ-C Low-Emitting Materials?

A

-Product is inherently nonemitting,
-Manufacturer has self-declared the products compliance and has compliant documentation.
-Product has third party certification of compliance.

68
Q

List 5 categories of SMACNA guidelines that a project manager should address when preparing an indoor air quality management plan for EQ-C Construction Indoor Air Quality Management Plan?
(How do I address air movement & pollution)

A

HVAC Protection
Source Control
Pathway Interruption
Housekeeping
Scheduling

69
Q

What must a healthcare project team submit for documentation to meet EQ-C Construction Indoor Air Quality Management Plan?
(Hint: plan during construction)

A

Submit an environmental quality management plan (EQMP) or detailed checklist that highlights:
Nonsmoking policy
Narrative describing protection measures for absorbent materials
Annotate photographs of indoor air and environmental quality measures
Record of filtration media.

70
Q

Indoor environmental elements that are addressed by an (lAQ) management plan for a healthcare facility?
(Hint: Air Hazards/pollutants)

A

Moisture
Particulates
Volitile Organic Compounds (VOCs)
Outdoor Emissions
Tobacco
Noise and Vibration
Infection control

71
Q

To meet EQ-C Construction Indoor Air Quality Management Plan, Healthcare projects should implement an (EQMP) that is based on which guidelines?

A

SMACNA and 2010 Guidelines Institute for D&C of Healthcare

72
Q

What temperature and humidity must be maintained during the flush-out to meet the requirements of Path 1, Option 1 of EQ-C Indoor Air Quality?

A

During flush-out an internal temperature of at least 60F and no higher than 80F and relative humidity of 60%

73
Q

Pursuing Option 2. Air Testing for EQ-C Indoor Air Quality Assessment. If 2 sample points exceed the allowable limits, what should the project team do next?

A

Must take corrective action and retest for the noncompliant contaminants at the same sampling points. These steps must be repeated until all requirements are met.

74
Q

What design alternative can be implemented in the regularly occupied spaces of a warehouse and distribution center to meet EQ-C Thermal comfort?

A

One or more of the following:
Radiant flooring
Circulating fans
Passive systems (nighttime air, heat venting, windflow)
Localized active cooling (refrigerant or evaporative-based systems)
Localized, hardwired fans that provide air movement for
occupants’ comfort

75
Q

How are air-testing location selected to meet Option 2 Air Testing of EQ-C Indoor Air Quality Assessment?

A

Locations selected for testing must represent the worst-case zones where the highest concentrations of contaminants of concern are likely to occur.

76
Q

What do the PMV and PPD predict?

A

Thermal comfort levels for occupants.

77
Q

List eligible thermal comforts that meet the requirements of EQ-C Thermal Comfort?

(Hint: regulators, appliances)

A

Thermostats
Ceiling Fans
Adjustable underfloor diffusers
Task mounted controls (plug ins)
Operable Windows

78
Q

What thermal comfort controls are ineligible for meeting the requirements of EQ-C Thermal Comfort?
(Hint: accessibility)

A

Ceiling diffusers without accessible controls
Thermostats with fixed setpoints that cannot be adjusted by occupants.

79
Q

Thermal comfort controls must allow occupants to adjust 1 of which 4 environmental elements to meet EQ-C Thermal Comfort?

A

Air Temperature
Radiant Temperature
Air Speed
Humidity

80
Q

What is unique requirement for retail projects to meet Option 2 Lighting Quality of EQ-C Interior Lighting?

A

Must provide controls in sales areas to reduce the ambient light levels to a midlevel.
(This requirement is an addition to providing at least 90% of the individual occupant spaces in office and administrative areas with individual lighting controls).

81
Q

What are the requirements to meet Option 1 Lighting Control of EQ-C Interior Lighting for an office building project?

A

Controls at 90% of individual occupant spaces and 100% of shared, multi-occupant spaces. At least 3 lighting levels or scenes must be provided, not including daylight.

82
Q

5 strategies that maximize daylight?

A

-Choosing appropriate window location, size, space, and glass selection
-Incorporating atria, clerestories, courtyards, and shallow floor plates
-Considering reflectance of interior finishes
-Locating interior partitions not to block access to daylight, or choosing transparent/glazed partitions.
-Determining an adequate ratio of window to floor area based on building footprint, the structural floor-to-floor height, and finished ceiling clearances.

83
Q

Which option under EQ-C Daylight is most suitable for a major renovation project with a scope that includes minimal modifications to the building envelope?

A

Option 3 Measurement is ideal for renovation projects that involve minimal modifications to the building envelope and for substantiating a completed project’s design strategies with a performance-based metric.

84
Q

If a project is pursuing Option 3 Measurement of EQ-C Daylight, when should the first and second measurement occur?

A

1st after project construction is complete and people have occupied space.
2nd measurement must occur at least 5 months after the 1st to address the difference in daylight experienced throughout the year.

85
Q

What is a view factor?

A

Measured amount of quality of views within 90 deg. cone of vision from an individual workstation.

86
Q

What percentage of regularly occupied floor areas must have a direct line of sight to the outdoors via vision glazing to meet the requirements of EQ-C Quality Views?

A

75%

87
Q

What are the 4 eligible view types for achieving EQ-C Quality Views?

A

View Type 1 - multiple lines of sight to vision glazing in different directions at least 90 deg.
View Type 2 - views that include at least 2 of the following: (A) Flora, fauna, sky, (B) movement, (C) objects at least 25ft from glazing.
View Type 3 - Unobstructed views located within the distance of 3 times the head height of vision glazing.
View Type 4 - Views with a view factor of 3 or greater, as defined in “Windows and Offices; A study of Office Worker Performance and the Indoor Environment” form the California Energy Commission.

88
Q

Main reference standard in Indoor Air Quality is?

A

ASHRAE 62.1

89
Q

Main reference standard for Thermal Comfort is?

A

ASHRAE 55

90
Q

Under the three individual lighting level controls, [on, off, and mid-level]; the mid level control must be what percentage range of the maximum illumination level?

A

30 to 70% of the maximum illumination level.

LEED AP (10 decks)

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