IEQ Flashcards
IEQ
Indoor Environmental Quality
Overall purpose
use performance-oriented credit requirement
Core Concepts
improve indoor air quality: ventilation choose proper materials reduce, manage and eliminate contaminants advocate green construction active (mechanical) ventilation passes (natural) ventilation
improve indoor environment:
thermal comfort
daylight
consider views
Cross-cutting issues: space types
the percentage of floor area
cross-cutting issues: space types (unoccupied)
electrical, mechanical, dedicated emergency exit core door or egress, closets, data center, storage areas
cross-cutting issues: space types (occupied)
regularly occupied: one hour of continuous occupancy per person per day on average
individual occupant: for distinctive task
multi-occupant: collaborative and overlapping tasks
densely: no more than 40SF/person
non-densely: more than 40SF/person
Credits
minimum indoor air quality performance environmental tobacco smoke control minimum acoustic performance (schools only) enhance outdoor air quality low-emitting materials construction indoor air quality management plan interior lighting daylight views acoustic performance
EQP: Minimum indoor air quality performance
ASHRAE Standard 62.1-2010
ventilation deletes pollutants created by occupants
prerequisite requires monitoring
EQP: Environmental Tobacco Smoke control
every year 5 million people die from tobacco use
this bans all smoking in and around a project
prohibit contact with ETS - Environmental Tobacco Smoke
EQC: Enhanced indoor air quality strategies
IAQ: Indoor Air Quality
improve occupant health and comfort
expands outdoor air quality requirements
monitoring strategies for ventilation systems
increased ventilation
enhanced filtration
EQC: Low-emitting materials
lessens contamination of chemical pollutants that harm the environment
VOCs - volatile organic compounds
extended exposure can be linked to chronic health issues
short term exposure leads to irritation
goes hand-in-hand with ventilation
preferably all interior building materials are in compliance
floors, walls, ceiling
thermal/acoustic insulation
furniture
EQC: Low-emitting materials acronyms
SCAQMD
CARBS’s
SCMs
South Coast air quality management district - Rule 1113
California air resources board - suggested control measures
EQC: Construction Indoor air quality management plan
captures airborne contaminants
prevents mold and other building material damage
keep toxins and pollutants out of buildings
during construction filters with a MERV - minimum efficiency reporting - value of 8
no smoking in the construction process
EQC: Construction Indoor air quality management plan
SMACNA
Sheet metal and Air conditioning national contractors association
EQC: Indoor Air Quality Assessment
set up better IAQ prior to construction completion
Option 1: California Department of Public Health Standard Method V1.1 - test air standard
Option 2: complete building “FLUSH OUT”
HVAC must operate on 100% outdoor air continuously for 2 weeks
EQC: Thermal Comfort
improve occupant comfort and well-being
six primary factors: surface temperature air temperature air movement humidity metabolic rate clothing
EQC: Thermal Comfort
PPD
PMV
Predicted Percentage of Dissatisfaction
Predicted Mean Vote - comfort levels based on -3 (too cold) to +3 (too hot) to collect data to produce PPD INDEX
EQC: Thermal Comfort
Field based research
an adaptive model of compliance to create comfortable temperature ranges
EQC: Interior Lighting
people are more productive and comfortable when have ability to control light
6 primary strategies:
limit light fixture glare (set by LIGHT RIGHT CONSORTIUM)
Use lights with a color rendering index (CRI) over 80
Use lights that have life of 24,000 hours or more
Less direct overhead lighting
specify high reflectance of surfaces (Illumination engineering society - floor 20, walls 50, ceilings 80)
design for individual patio less than 1:10
EQC: Daylight
credit focuses on using ACTUAL MEASUREMENT and SIMULATED DAYLIGHT ANALYSIS
3 options:
- detailed design analysis and input
- establish actual performance
- computer simulation
EQC: Quality Views
greater attentiveness, satisfaction, and productivity
