IEQ (Indoor Environmental Quality) Flashcards
Lighting controls in a shared multi-occupant space must have which characteristic to count toward EQ Credit Interior Lighting?
Individual lighting controls and controls for shared multi-occupant spaces must support at least three lighting levels: on, off, and midlevel.
Midlevel is defined as 30% to 70% of the maximum illumination level, not including daylighting contributions.
What spaces would need to be monitored to earn a point for EQ Credit Enhanced IAQ Strategies?
The key to this credit is to know only densely occupied spaces are monitored. These spaces have 25 or more people per 1,000 square feet.
A new office building with a retail component on the first floor totals 254,000 sf. The building requires a median electrical intensity of 11.7kWh/sf/year. What amount of green power purchased by the operating company will qualify the project for EA Credit Green Power and Carbon Offsets?
Credit is achieved by purchasing 50% renewable power for a period of five years.
254,000 sf X 11.7 kWh/sf/year X 50% = 1,485,900 kWh / year
1,485,900 kWh X 5 years = 7,429,500 kWh
What products would be included in the threshold level of compliance for emissions and content standards for low-emitting materials in an office project?
Option 1 for the credit includes interior paints, coatings, adhesives, sealants, flooring, composite wood, ceilings, wall, thermal and acoustic insulation, and furniture as applicable to the project’s scope of work.
Which actions does a retail building owner need to take to prevent or minimize occupant exposure to environmental tobacco smoke?
Prohibit smoking inside the building.
Prohibit smoking outside the building except in designated smoking areas located at least 25 feet or 7.5 m from all entries, outdoor air intakes, and operating windows.
Post signage within 10 feet (3 m) of all building entrances indicating the no-smoking policy.
Prohibiting smoking on sidewalks is required if the sidewalks are used for business purposes (such as an outdoor cafe). Public sidewalks are not considered as used for business purposes.
How can the additional energy needed for increasing the ventilation in a building be mitigated?
Heat-recovery ventilation and/or economizer strategies can help reduce the extra energy needed for increased ventilation.
Here are the required steps before a flush-out or air testing:
Install all finishes and furniture
For residential projects, install owner-provided furniture
Complete punch-list items that would generate VOCs or other contaminants
Test and balance the HVAC system
A new construction project will have four stories. Each story is 25,000 SF. The project team will conduct an occupied phased flush-out to achieve EQ Credit IAQ Assessment. What is the minimum outdoor air delivery rate post-occupancy?
The occupied space must be ventilated at a rate of 0.3 CFM per square foot.
Since the building is 100,000 SF the ventilation rate post occupancy must be 30,000 CFM.
100,000 SF X 0.30 CFM / SF = 30,000 CFM
A mechanical engineer is reviewing ventilation strategies for an office project. How should the engineer proceed to determine if natural ventilation is feasible?
The CIBSE flowchart can be used to determine if natural ventilation is feasible for the project.
Selecting light fixtures with an illuminance of less than 2,500 cd/m2 for all regularly occupied spaces would help with which action?
Option 2 Lighting Quality of EQ Interior Lighting has eight strategies. Understand the methodology behind each of these strategies, which are listed in the Behind the Intent section.
A contractor is documenting an IAQ plan that will be provided to each sub-contractor working on a major renovation project. Part of the building will remain occupied during the renovation. What steps should the contractor take to reduce indoor air quality problems due to the construction process?
The question is asking about Construction IAQ Management Plan but only referring to the intent.
The correct choice comes from the SMACNA Scheduling requirements. If there are occupants in the building during construction try to conduct tasks that have pollution potential during the off-hours of the building when occupants are not present. Painting is a good example since paint can give off a lot of fumes.
A project team for a hotel is trying to earn an Innovation credit by including a green cleaning policy that uses environmentally preferable cleaning products and equipment. The building will have a housekeeping space and mixed-mode ventilation. Which statement is true about the project’s ability to meet the requirements of EQ Credit Enhanced Indoor Air Quality Strategies, Interior Cross-Contamination Prevention?
The housekeeping space would need to additionally include self-closing doors and deck-to-deck partitions to meet the requirements.
Which type of external luminaires should be selected to generate well-shielded, well-directed light?
Luminaries that minimize uplight and light trespass from the site
Minimizing uplight, glare and light trespass is the strategy for good lighting selection.
For EQ Credit Thermal Comfort which design strategy will provide adequate thermal comfort control?
For this credit, make sure to be familiar with space types - occupied vs. unoccupied, regular vs. non-regular. See the EQ Intro.
For thermal comfort control, 50% of individual occupant spaces must have individual comfort controls and all shared multi-occupant spaces must have thermal comfort control.
If a building design includes a multiple-zone recirculating system and the project team wants to increase ventilation for EQ Credit Enhanced IAQ Strategies, which action will likely need to occur?
Increasing the required outdoor air intake for the system by more than 30%
