AIR - preconditions 4 Flashcards
Air / Feature A01 Precondition- aim
Air Quality
Provide a basic level of indoor air quality that contributes to the health and well-being of building user
AIR / How many and which preconditions?
A01 Air Quality
A02 Smoke-Free Environment
A03 Ventilation Design
A04 Construction Pollution Management
Parts of A01 Air quality
1 Meet thresholds for particulate matter 2Meet thresholds for organic gases 3 Meet thresholds for inorganic gases 4 Meet thresholds for radon 5 Monitor air parameters
A01/ AIR QUALITY
part 1 thresholds for particulate matter
3 options
Option 1: Acceptable thresholds in occupiable spaces:
PM2.5: 15 µg/m3 or lower.
PM10: 50 µg/m3 or lower.
Option 2: Modified thresholds in polluted regions
limited in WELL Certification level to gold
For projects where the annual average outdoor PM2.5 level is 35 µg/m3 or higher, the following thresholds are met:
PM2.5: 25 µg/m3 or lower. PM10: 50 µg/m3 or lower.
Option 3: Dynamic thresholds in polluted regions
limited in WELL Certification level to silver
For projects where the annual average outdoor PM2.5 level is 35 µg/m3 or higher, the following thresholds are met:
PM2.5 less than or equal to 30% of the 24- or 48-hour average of outdoor levels on the day(s) of performance testing. PM10 less than or equal to 30% of the 24- or 48-hour average of outdoor levels on the day(s) of performance testing.
Verified by Technical Document, Performance Test
Ao1/ 2Meet thresholds for organic gases
Option 1: Laboratory-based VOC tests
The following thresholds are met in occupiable spaces:
Benzene (CAS 71-43-2): 10 µg/m³ or lower. Formaldehyde (CAS 50-00-0): 50 µg/m³ or lower. Toluene (CAS 108-88-3): 300 µg/m³ or lower.
AO1/ AIR QUALITY
2 Meet thresholds for organic gases
Option 2: VOC monitoring
installation of sensors/total voc
Sensors to measure total VOC at least once per hour (with accuracy 25% at 500 µg/m3) are installed with a density of at least one per every 3,500 ft2/325 m2
Data covering at least the previous one month demonstrate total VOC levels of 500 µg/m³ or lower for at least 90% of regularly occupied hours for all sensors.
A01/ AIR QUALITY
3 Meet thresholds for inorganic gases (2)
The following thresholds are met in occupiable spaces:
Carbon monoxide: 10 mg/m³ [9 ppm] or lower. Ozone: 100 µg/m³ [51 ppb] or lower.
A01/ AIR QUALITY
4 Meet Thresholds for Radon
+how is tested?
Verified by Letter of Assurance – Owner, Letter of Assurance – Engineer
Becquerel is a unit of radioactivity
picocurries-old unit
For regularly occupied spaces at or below grade, one of the following requirements is met:
The radon is 0.15 Bq/L [4 pCi/L] or lower, as tested by a professional demonstrated not to have a conflict of interest with the WELL project.
One test is conducted per 25,000 ft2/2322 m2 of regularly occupied space at or below grade.
All regularly occupied spaces at or below grade meet Feature A03, Part 1, Option 1
A01/ 5 Monitor Air Parameters
Verified by On-going Data Report
The pollutants listed in Parts 1-3 of this feature are monitored in occupiable spaces at intervals no longer than once per year, and the results are submitted annually through the WELL digital platform.
The number and location of sampling points for on-going monitoring complies with the requirements outlined in the Performance Verification Guidebook.
PA01 AIR QUALITY
For Commercial Kitchen Spaces & Industrial/ differences within thresholds
for PM2,5 / CO / Ozone
Part 1: Acceptable thresholds
The following threshold is met:
PM2.5:
35 µg/m³ or lower. or dynamic 30% less than outside
Part 3:
The following thresholds are met:
Carbon monoxide: 34 mg/m³ [30 ppm] or lower. Ozone: 100 µg/m³ [51 ppb] or lower.
PA02 SMOKE_FREE ENVIRONMENT
background
(aim, compounds, life, diseases)
Deter smoking, minimize occupant exposure to secondhand smoke and reduce smoke pollution.
Ingredients in cigarettes form over 7,000 compounds when burned, of which at least 69 are known to be carcinogenic.
The average life expectancy of a smoker is 10 years less than that of a nonsmoker.
Health issues associated with tobacco smoke include asthma attacks, respiratory infections, coronary heart disease, stroke, lung cancer and sudden infant death syndrome.
Feature A02 /parts
SMOKE_FREE ENVIRONMENT
Part 1 prohibit indoor smoking also e-cigarettes
Part 2 prohibit outdoor smoking-
Outdoors at ground level within 25 ft/ 7.6 m (or the maximum extent allowable by local codes) of all entrances, operable windows and building air intakes.
Signage to communicate the ban.
In outdoor areas within the project boundary that allow smoking (if any), signs are placed along walkways (not more than 100 ft / 30m between signs) that describe the hazards of smoking.
On decks, patios, balconies, rooftops and other occupiable outdoor areas above ground level.
Feature A02 / Verification Methods
Part 1 - Prohibit Indoor Smoking
For All Spaces
Policy and/or Operations Schedule
Part 2 - Prohibit Outdoor Smoking
For All Spaces
On-site Photographs, Letter of Assurance – Owner
AIR / Feature A03 precondition
VENTILATION DESIGN
aim
Minimize indoor air quality issues through the provision of adequate ventilation.
Feature A03 precondition
VENTILATION DESIGN
Part 1 Ensure Adequate Ventilation
For All Spaces
Option 1: Mechanically ventilated spaces
Existing ventilation systems have been tested and balanced to meet
supply and exhaust rates
set in one or more VENTILATION GUIDELINES within the last 5 years.
- must describe ventilation rates for at least 90% of the project area.
- scheduled to be tested and balanced after project occupancy.
ASHRAE 62.1-2010 or any more recent versions (Ventilation Rate Procedure or IAQ Procedure).
ASHRAE 62.2-2016
CEN/ EN 16798-1
AS 1668.2-2012 or any more recent version.
CIBSE Guide A: Environmental Design, version 2007 or any more recent version.
Feature A03 VENTILATION DESIGN
Part 1 Ensure Adequate Ventilation
For All Spaces
Option 2: Naturally ventilated spaces
naturally ventilated projects with no mechanical ventilation /ventilation rates for at least 90% of the project area:
Natural Ventilation Procedure in ASHRAE 62.1-2010 or any more recent version.12
CIBSE AM10: Natural Ventilation in Non-Domestic Buildings (2005 or any more recent version) Section 2.4 – Natural ventilation strategies and Chapter 4 – Design Calculations.17
AS 1668.4-2012 or any more recent version.15
Vents and windows used to meet the ventilation requirements in one of the standards mentioned above are permanently open or have controls to prevent their closure during periods of occupancy. (Operable windows not used in ventilation calculations may be user-operated.)
Outdoor air meets the following thresholds as an average for the previous year:
PM2.5 less than 15 μg/m³.
PM10 less than 30 μg/m³.
Feature A03 VENTILATION DESIGN
Part 1 Ensure Adequate Ventilation
Option 3: Naturally ventilated spaces in areas with elevated particulate matter
Certification note: Projects pursuing this strategy are limited in WELL Certification level to silver, regardless of total points achieved.
For naturally ventilated projects with no mechanical ventilation, the following requirements are met:
One or more of the following design criteria, which must describe ventilation rates for at least 90% of the project area:
- Natural Ventilation Procedure in ASHRAE 62.1-2010 or any more recent version.
- CIBSE AM10: Natural Ventilation in Non-Domestic Buildings (2005 or any more recent version) Section 2.4 – Natural ventilation strategies and Chapter 4 – Design Calculations.
- AS 1668.4-2012 or any more recent version.
Vents and windows are permanently open or have controls to prevent their closure during periods of occupancy. (Operable windows not used in ventilation calculations may be user-operated.)
Outdoor air meets the following thresholds as an average for the previous year:
PM2.5 less than 35 μg/m³.18
PM10 less than 70 μg/m³.18
Verification Methods for
Feature A03 VENTILATION DESIGN
Ensure Adequate Ventilation
For All Spaces
Option 1: Mechanically ventilated spaces -
LOAE
Option 2: Naturally ventilated spaces - TD+ LOAE+ Outdoor particulate matter levels
Option 3: Naturally ventilated spaces in areas with elevated particulate matter - TD+ LOAE+ Outdoor particulate matter levels
Air / Feature A04 Precondition
CONSTRUCTION POLLUTION MANAGEMENT
aim (3)
- Minimize the introduction of construction-related pollutants into indoor air,
- remediate construction-related indoor air contamination for human health and
- protect building products from degradation.
AIR/ Feature A04 Precondition
Construction Pollution Management
strategies (4)
Combination of strategies.
such as duct protection,
moisture and dust management,
filter replacement, and
proper equipment selection.
