INTENT: The WELL Air concept aims to ensure high levels of indoor air quality across a building’s lifetime through diverse strategies that include source elimination or reduction, active and passive building design and operation strategies and human behavior interventions.
WKU Points Achieved in the Air Feature
Intent: Ensure a basic level of indoor air quality that contributes to the health and well-being of building users.
This WELL feature requires projects to provide acceptable air quality levels as determined by public health authorities. Ogden College Hall is tested annually for indoor air pollutants to ensure they are below the WELL Building Standards.
Intent: Deter smoking, minimize occupant exposure to secondhand smoke and reduce smoke pollution.
This WELL feature requires projects to ban indoor smoking and ban or restrict outdoor smoking within its boundaries.
Indoor Smoking Ban: Smoking and the use of e-cigarettes is prohibited in interior spaces within the project boundary.
Outdoor Smoking Ban: Signage is present to indicate:
- Smoking is prohibited within 7.5 m [25 ft] (or the maximum extent allowable by local codes) of all entrances, operable windows and building air intakes. Signage is present to clearly communicate the ban.
- Smoking is prohibited on all decks, patios, balconies, rooftops and outdoor galleries. Signage is present to clearly communicate the ban.
Intent: Prevent indoor air quality issues through the provision of adequate ventilation.
This WELL feature requires projects to bring in fresh air from the outside through mechanical and/or natural means in order to dilute human- and product-generated air pollutants.
- Ventilation supply and exhaust rates set using ASHRAE 62.1-2010 Ventilation Rate Procedure.
- To verify compliance with the ventilation rate requirements the ventilation system was tested and balanced in accordance with ASHRAE 111.
Intent: 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.
This WELL feature requires projects to protect indoor air quality during building construction and renovation through a combination of strategies such as envelope protection, moisture and dust management, filter replacement, air flush and proper equipment selection.
- Ducts are sealed and protected from possible contamination during construction.
- Media filters with a minimum efficiency reporting value (MERV) of 8 are used to filter outdoor air and all filters were replaced prior to occupancy.
- Upon completion of construction (including installation of woodwork, doors, acoustic tiles, paints, carpets, movable furnishings and other interior finishes), a building air flush is performed while maintaining an indoor temperature of at least 15 °C [59 °F] and relative humidity below 60%, at one of the below volumes: A total air volume of 4,300 m³ of outdoor air per m² of floor area [14,000 ft³ per ft² of floor area] prior to occupancy.
Intent: Encourage and recognize buildings with enhanced levels of indoor air quality that promote the health and well-being of people
This WELL feature requires projects to go above current guidelines to provide enhanced air quality levels that have been linked to improved human health and performance
Projects comply with the thresholds below:
- Particulate Matter Thresholds PM2.5 < 10 μg/m³
- Particulate Matter Thresholds PM10 < 20 μg/m³.[14
- Formaldehyde less than 13.4 ppb.
- Benzene less than 3 μg/m³.
- Carbon monoxide less than 6 ppm.
- Ozone less than 25 ppb.
- Nitrogen dioxide less than 21 ppb.
Intent: Expel internally generated pollutants and improve air quality in the breathing zone through an increased supply of outdoor air or increased ventilation efficiency.
This WELL feature requires implementation of advanced ventilation strategies that can secure higher air quality levels and thus benefit human health and productivity.
- Projects exceed mechanical ventilation outdoor air supply rates described in ASHRAE 62.1-2010 by the 30% percent. In the learning environment this is critical to maximize student success. The Harvard Study on Cognitive Function brought attention to the correlation between ventilation and student success. Source: http://naturalleader.com/thecogfxstudy/
- Ventilation is sufficient to keep CO2 levels less than 900 PPM in all regularly occupied spaces.
Intent: Minimize the introduction of pollutants into indoor air through the building envelope and at building entrances.
This WELL feature requires projects to reduce transmission of air and pollutants from outdoors to indoors through the building envelope and entrance.
- Building envelope and entry: Envelope commissioning in accordance with ASHRAE Guideline 0-2013 and the National Institute of Building Sciences (NIBS) Guideline 3-2012 was performed by an independent professional who is not a member or subcontractor of the building envelope design and construction team.
- Building entry vestibule with two typically closed doorways is in place to slow the movement of air from outdoors to indoors.
Intent: Preserve indoor air quality and maximize olfactory comfort in occupied spaces through the isolation and proper ventilation of indoor pollution sources and chemical storage areas.
This WELL feature requires strategies that isolate key sources of odors, germs, pollution or humidity through doors or dedicate:
- All bathrooms, break rooms, rooms for cleaning chemicals and chemical storage and
high-humidity areas meet one of the following requirements:
1. Utilize exhaust fans so that return air is expelled outdoors rather than recirculated.
2. Are separated from all adjacent regularly occupied spaces with self-closing doors and/or vestibules.
- Chemistry and Biology laboratories and fume hoods
1. All the laboratory spaces are 100% outside air to continually change the air in the space and the fume hoods are always exhausting air to prevent any transfer to the laboratory spaces. The rooms are always maintained at a negative pressure to the corridor through the use of the Phoenix Controls’ Celeris® platform and Accel® II venturi valves that work together on a room level network to produce a high performance environmental control.
2. The fume hoods have auto closers that allow the hoods to automatically close when they are not in use and maximize the protection of the laboratory space when the hoods are not in use.
3. The fume hood sash stops were lowered to 12” from the typical University teaching height of 18” allowing the user face to be further from the face of the hood and provide additional protection as WKU teaches a new generation.
Intent: Remove indoor and outdoor airborne contaminants through air filtration.
This WELL feature requires projects with mechanically ventilated spaces to implement adequate air filtration and document a maintenance protocol for installed filters. For naturally ventilated spaces, this feature requires that outdoor air quality standards be met.
- Implement Particle Filtration: Media filters are used in the ventilation system to filter outdoor air supplied to the space in accordance with Annual Average Outdoor PM2.5 Threshold 24-39 μg/m³.
- Filter is equipped with on-board pressure sensors or filter change indicator that signal when filter requires replacement. Evidence that the filter has been replaced according to manufacturer's recommendation is submitted annually through WELL Online.