Download Building Environmental Assessment System

INDDOR
ENVIRONMENTAL
QUALITY
RATING SYSTEM CREDITS
IEQ- P1: MINIMUM INDOOR AIR QUALITY PERFORMANCE
INTENT
To establish minimum indoor air quality (IAQ) performance to enhance indoor air quality in
buildings, thus contributing to the comfort and well-being of the occupants.
PREREQUISITE REQUIREMENTS
Meet ventilation requirements
Naturally Ventilated Spaces
For naturally ventilated spaces (and for mixed-mode systems when the mechanical
ventilation is inactivated), determine the minimum outdoor air opening and space
configuration requirements using the natural ventilation procedure from ASHRAE Standard
62.1–2010.
Confirm that natural ventilation is an effective strategy for the project by following the flow
diagram in the Chartered Institution of Building Services Engineers (CIBSE) Applications
Manual AM10, March 2005, Natural Ventilation in Non-domestic Buildings, Figure 2.8, and
meet the requirements of ASHRAE Standard 62.1–2010, Section 4.
Mechanically Ventilated Spaces
For mechanically ventilated spaces (and for mixed-mode systems when the mechanical
ventilation is activated), determine the minimum outdoor air intake flow for mechanical
ventilation systems using the ventilation rate procedure from ASHRAE 62.1–2010.
ASHRAE Standard 62.1–2010
Meet the minimum requirements of ASHRAE Standard 62.1–2010, Sections 4–7, Ventilation
for Acceptable Indoor Air Quality (with errata).
All Spaces
The indoor air quality procedure defined in ASHRAE Standard 62.1–2010 may not be used
to comply with this prerequisite.
POTENTIAL TECHNOLOGIES AND STRATEGIES
Design ventilation systems to meet or exceed the minimum outdoor air ventilation rates as
described in the ASHRAE standard. Balance the impacts of ventilation rates on energy use
and indoor air quality to optimize for energy efficiency and occupant comfort.
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RATING SYSTEM CREDITS
IEQ- P2: ENVIRONMENTAL TOBACCO SMOKE CONTROL
INTENT
To prevent or minimize exposure of building occupants, indoor surfaces, and ventilation air
distribution systems to environmental tobacco smoke (ETS).
PREREQUISITE REQUIREMENTS
Prohibit smoking inside the building.
Prohibit smoking outside the building except in designated smoking areas located at least
25 feet (7.5 meters) from all entries, outdoor air intakes, and operable windows. The nosmoking policy also applies to spaces outside the property line used for business purposes.
If the requirement to prohibit smoking within 25 feet (7.5 meters) cannot be implemented
because of code, provide documentation of these regulations.
Signage must be posted within 10 feet (3 meters) of all building entrances indicating the
no-smoking policy.
POTENTIAL TECHNOLOGIES AND STRATEGIES
Prohibit smoking in commercial buildings or effectively control the ventilation air in smoking
rooms.
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RATING SYSTEM CREDITS
IEQ- P3: CONSTRUCTION IAQ MANAGEMENT
INTENT
To reduce indoor air quality (IAQ) problems resulting from construction or renovation and
promote the comfort and well-being of construction workers and building occupants.
PREREQUISITE REQUIREMENTS
OPTION 1
Construction IAQ Management Plan
Demonstrate the development and implementation of a comprehensive Construction IAQ
Management Plan. At a minimum the plan must address the following:
• Source Control
• Building Flush Out
• Resuming Normal Building Operation
To demonstrate compliance the Client shall submit a report prepared by a suitably qualified
person documenting effective implementation of a Construction IAQ Management Plan
appropriate to the scale and extent of the development including, but not limited to, the
following:
• A copy of the Plan
• Evidence of measures showing protection of ducts, on-site storage or protection of
installed absorptive materials
• Checklists, worksheets, notifications, deficiencies or resolutions related to
construction IAQ issues;
• Documentation that demonstrates implementation of construction IAQ management
measures during construction
• Details of filtration media used during construction and installed immediately prior
to occupancy
• Documentation for duct cleaning and testing.
OR
OPTION 2
Filter replacement and flush-out
The Client shall submit a report prepared by a suitably qualified person detailing the technical
information for the filtration media used during construction and installed immediately prior
to occupancy. The report shall also detail building flush-out procedures including actual
dates of the flush-out.
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Where it can be demonstrated that filtration media used had a Minimum Efficiency
Reporting Value (MERV) of 13 as determined by ASHRAE performance specification, and
a minimum one-week building flush-out with new filtration media at 50% outside air was
carried out after construction and prior to occupancy, the credit shall be awarded.
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RATING SYSTEM CREDITS
REQUIRED SUBMISSION
Assessment of the duration required for pre-occupancy flush-out as follows:
• Estimation of pre-occupancy flush-out based on likely ambient conditions according
to the project schedule.
• Estimation of pre-occupancy flush-out based on the most onerous ambient
conditions to demonstrate possible maximum impact of project delays.
POTENTIAL TECHNOLOGIES AND STRATEGIES
Adopt an IAQ management plan to protect the heating, ventilation, and air conditioning
(HVAC) system during construction, control pollutant sources, and interrupt contamination
pathways. Sequence the installation of materials to avoid contamination of absorptive
materials such as insulation, carpeting, ceiling tile and gypsum wallboard.
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RATING SYSTEM CREDITS
IEQ- 1: ENHANCED INDOOR AIR QUALITY STRATEGIES
INTENT
CREDIT
To promote occupants’ comfort, well-being, and productivity by improving indoor air quality.
4 CREDITS
CREDIT REQUIREMENTS
OPTION 1 (4 CREDITS)
Enhanced IAQ Strategies
Comply with the following requirements, as applicable.
Mechanically ventilated spaces
• Interior cross-contamination prevention
• Filtration
Naturally ventilated spaces
• Entryway systems
• Natural ventilation design calculations
Mixed-mode systems
• Interior cross-contamination prevention
• Filtration
• Natural ventilation design calculations
• Mixed-mode design calculations
A. Interior Cross-Contamination Prevention
Sufficiently exhaust each space where hazardous gases or chemicals may be present or
used (e.g., garages, HVAC rooms, generator and fuel storage spaces), using the exhaust
rates determined in EQ Prerequisite Minimum Indoor Air Quality Performance.
B. Filtration
Each ventilation system that supplies outdoor air to occupied spaces must have particle
filters or air-cleaning devices that meet one of the following filtration media requirements:
• Minimum efficiency reporting value (MERV) of 13 or higher
• Replace all air filtration media after completion of construction and before occupancy.
C. Natural Ventilation Design Calculations
Demonstrate that the system design for occupied spaces employs the appropriate
strategies in Chartered Institution of Building Services Engineers (CIBSE) Applications
Manual AM10, March 2005, Natural Ventilation in Non-Domestic Buildings, Section 2.4.
D. Mixed-Mode Design Calculations
Demonstrate that the system design for occupied spaces complies with CIBSE Applications
Manual 13–2000, Mixed Mode Ventilation.
OR
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RATING SYSTEM CREDITS
OPTION 2 (4 CREDITS)
Additional Enhanced IAQ Strategies
Comply with the following requirements, as applicable.
Mechanically ventilated spaces
• Exterior contamination prevention
• Increased ventilation
• Carbon dioxide monitoring
• Additional source control and monitoring
Naturally ventilated spaces
• Exterior contamination prevention
• Additional source control and monitoring
• Natural ventilation room by room calculations
Mixed-mode systems
• Exterior contamination prevention
• Increased ventilation
• Additional source control and monitoring
• Natural ventilation room-by-room calculations
A. Exterior Contamination Prevention
Design the project to minimize and control the entry of pollutants into the building. Ensure
through the results of computational fluid dynamics modeling, Gaussian dispersion
analyses, wind tunnel modeling, or tracer gas modeling that outdoor air contaminant
concentrations at outdoor air intakes are below the thresholds listed in Nigeria Ambient Air
Quality Standards.
B. Increased Ventilation
Increase breathing zone outdoor air ventilation rates to all occupied spaces by at least
30% above the minimum rates as determined in EQ Prerequisite for Minimum Indoor Air
Quality Performance.
C. Carbon Dioxide Monitoring
Monitor concentrations within all densely occupied spaces. CO2 monitors must be between
3 and 6 feet (90 and 180 centimeters) above the floor. CO2 monitors must have an audible
or visual indicator or alert the building automation system if the sensed CO2 concentration
exceeds the set point by more than 10%. Calculate appropriate CO2 set points using
methods in ASHRAE 62.1–2010.
D. Additional Source Control and Monitoring
For spaces where air contaminants are likely, evaluate potential sources of additional air
contaminants besides CO2. Develop and implement a materials-handling plan to reduce
the likelihood of contaminant release. Install monitoring systems with sensors designed to
detect the specific contaminants. An alarm must indicate any unusual or unsafe conditions.
E. Natural Ventilation Room-by-Room Calculations
Follow CIBSE AM10, Section 4, Design Calculations, to predict that room-by-room airflows
will provide effective natural ventilation.
OR
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RATING SYSTEM CREDITS
OPTION 3 (4 CREDITS)
Monitoring Indoor Air Quality
Mechanically Ventilated Spaces
For mechanically ventilated spaces (and for mixed-mode systems when the mechanical
ventilation is activated), monitor outdoor air intake flow as follows:
• For variable air volume systems, provide a direct outdoor airflow measurement
device capable of measuring the minimum outdoor air intake flow. This device must
measure the minimum outdoor air intake flow with an accuracy of +/–10% of the
design minimum outdoor airflow rate, as defined by the ventilation requirements
above. An alarm must indicate when the outdoor airflow value varies by 15% or
more from the outdoor airflow set point.
• For constant-volume systems, balance outdoor airflow to the design minimum
outdoor airflow rate defined by ASHRAE Standard 62.1–2010 (with errata but
without addenda2), or higher. Install a current transducer on the supply fan, an
airflow switch, or similar monitoring device.
Naturally Ventilated Spaces
For naturally ventilated spaces (and for mixed-mode systems when the mechanical
ventilation is inactivated), comply with at least one of the following strategies:
• Provide a direct exhaust airflow measurement device capable of measuring the
exhaust airflow. This device must measure the exhaust airflow with an accuracy of
+/–10% of the design minimum exhaust airflow rate. An alarm must indicate when
airflow values vary by 15% or more from the exhaust airflow set point.
• Provide automatic indication devices on all natural ventilation openings intended to
meet the minimum opening requirements. An alarm must indicate when any one of
the openings is closed during occupied hours.
• Monitor carbon dioxide (CO2) concentrations within each thermal zone. CO2
monitors must be between 3 and 6 feet (90 and 180 centimeters) above the floor
and within the thermal zone. CO2 monitors must have an audible or visual indicator
or alert the building automation system if the sensed CO2 concentration exceeds
the set point by more than 10%. Calculate appropriate CO2 set points using the
methods in ASHRAE 62.1–2010.
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RATING SYSTEM CREDITS
IEQ- 2: INDOOR AIR POLLUTANTS
INTENT
CREDIT
To minimize building occupant exposure to potentially hazardous particulates and chemical
pollutants.
2 CREDITS
CREDIT REQUIREMENTS
Encourage the use and specification of healthy materials and finishes which contain low
volatile organic compounds (VOC) and formaldehyde.
Use low VOC paint and coating throughout the building. Paints and Coatings to comply
with requirements specified in international labeling schemes.
AND
Use low VOC carpet or flooring throughout the building.
AND
Use low VOC adhesive and sealant or no adhesive or sealant used. Use products with no
added urea formaldehyde. These include:
• Composite wood and agrifiber products defined as: particleboard, medium density
fiberboard (MDF), plywood, wheatboard, strawboard, panel substrates and door
cores, AND
• Laminating adhesives used to fabricate on-site and shop-applied composite wood
and agrifiber assemblies
REQUIRED SUBMISSION
Summary report identifying areas where the low VOC materials will be installed and how
the credit compliance is to be me (Design Assessment).
• As built drawings showing where low VOC materials or products are used.
• List of products installed that meet the credit requirements, and their specifications.
• Manufacturer’s information including data sheets, certificates or test reports to
demonstrate credit compliance
• Photographic evidence of each typical low VOC installation
• Describe any deviations or additions to the Design Assessment
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RATING SYSTEM CREDITS
IEQ- 3: INDOOR AIR QUALITY ASSESSMENT BEFORE AND
DURING OCCUPANCY
INTENT
CREDIT
Develop and implement an Indoor Air Quality Management Plan for the building.
1 CREDITS
CREDIT REQUIREMENTS
Encourage the use and specification of healthy materials and finishes which contain low
volatile organic compounds (VOC) and formaldehyde.
Pre-Occupancy Phase
OPTION 1
Perform a building flush-out by supplying outdoor air to provide not less than 10 air changes/
hour (ACH) for at least 30 minutes operation before occupancy and continuous minimum 1
ACH during the initial 14 days occupancy of the completed building.
OR
OPTION 2
If low VOC materials and low formaldehyde composite wood are used (EQ4 is achieved),
then building flushout can be performed by supplying outdoor air to provide not less than
10 ACH for at least 15 minutes operation or not less than 6 ACH for at least 30 minutes
operation and continuous 1ACH during the initial 7 days occupancy of the completed
building.
During Occupancy Phase
Install a permanent air flushing system of at least 10 ACH operation for use during
occupancy stage.
REQUIRED SUBMISSION
Summary report outlining the strategies and procedures to be taken to meet the credit
requirements (Design Assessment)
• Report on building flush-out procedure including the actual dates of the flush-out.
• If IAQ testing is carried out, a report to outline the procedures undertaken and the
results of the testing to verify if the credit requirements are met or not should be
provided. If not, corrective measures must be taken
• Describe any deviations or additions to the Design Assessment.
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RATING SYSTEM CREDITS
IEQ- 4: THERMAL COMFORT AND CONTROLS
INTENT
CREDIT
To provide a high level of thermal comfort system control by individual occupants or groups
in multi occupant spaces and promote their productivity, comfort and well-being.
2 CREDITS
CREDIT REQUIREMENTS
OPTION 1 (1 CREDIT)
Thermal Zoning
Demonstrate that all spaces within the building(s) have been modeled to determine zonal
cooling demand and designed to have separately controllable thermal zones, as follows:
Design for separate zones and controls for a maximum of 35m2 of open plan space on the
perimeter of the building and a maximum of 70m2 of open plan space in the internal areas
of the building. Each thermal zone must have thermostats that allow control over air speed
or temperature as a minimum.
For private enclosed spaces intended for individual use, one thermostatic controller must
be provided that allows control over air speed or temperature as a minimum.
Multi-occupant spaces intended for group must at least have one thermostatic controller.
In the case where these spaces have movable internal partitions intended to sub-divide
spaces, each space must have at least one thermostatic controller.
OR
OPTION 2 (1 CREDIT)
Meet the requirements for both thermal comfort design and thermal comfort control.
Design to ASHRAE 55 standards in conjunction with the relevant localized parameters
Provide individual comfort control for ≥ 50% of the building occupants to enable adjustments
to suit individual task needs and preferences.
AND
Provide comfort system control for all shared multi-occupant spaces to enable adjustments
to suit group needs and preferences.
OR
OPTION 3 (1 CREDIT)
Occupant Control
Demonstrate individual control as follows:
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RATING SYSTEM CREDITS
Mechanical Ventilation
The ventilation/temperature control system allows for occupant control over at least air
temperature and / or air speed as follows:
•
• Provide occupancy sensors linked to HVAC control systems that automatically
modulate temperature and air flow-rate based on occupancy down to a minimum
design setback in all multi-occupant spaces.
Comfort control can be provided by thermostatic controllers linked to on-floor plant or via
supply air terminals directly controllable and easily accessible by occupants that allow
control of temperature and/or flow-rate (such as terminals located at floor level, within
workstations or via overhead terminals). Where thermostatic controllers are used in
conjunction with on-floor plant, the plant must be capable of serving no more than two
occupants.
For private enclosed spaces intended for individual use, one thermostatic controller must
be provided that allows control over air speed or temperature as a minimum.
Any fully enclosed individual space that is less than 35m2 need only have one ventilation
/ temperature control system.
In all space types, multi-occupant spaces intended for group activities (meeting rooms,
conference halls) must have at least one thermostatic controller. Where these spaces
have movable internal partitions intended to sub-divide spaces, each space must have at
least one thermostatic controller.
REQUIRED SUBMISSION
• Brief narrative describing how the project will meet the Credit Requirements. Zoning
must match that in Prerequisite EA-P1 Minimum Energy Performance;
• Drawings of the mechanical ventilation systems, clearly indicating zone boundaries
and zone references. Drawings must also highlight locations for thermostatic
controllers intended for occupant control; Pearl Building Rating System: Design &
Construction, Version 1.0, April 2010 98 of 223
• Spreadsheet listing of each zone including its reference name, zone floor area,
zone air temperature, zone resultant or operative temperature, zone peak cooling
loads and floor peak simultaneous cooling loads; and
• Submission of spreadsheet results and associated plans for ‘typical floors’ will only
be accepted where equivalency can be demonstrated.
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RATING SYSTEM CREDITS
IEQ- 5: INTERIOR LIGHTING
INTENT
CREDIT
To promote occupants’ productivity, comfort, and well-being by providing high-quality
lighting.
2 CREDITS
CREDIT REQUIREMENTS
OPTION 1 (2 CREDITS)
Lighting Control
For at least 90% of individual occupant spaces, provide individual lighting controls that
enable occupants to adjust the lighting to suit their individual tasks and preferences, with
at least three lighting levels or scenes (on, off, midlevel). Midlevel is 30% to 70% of the
maximum connected lighting load. For all shared multi-occupant spaces, meet all of the
following requirements.
Provide multi-zone control systems that enable occupants to adjust the lighting to meet
group needs and preferences, with at least three lighting levels or scenes (on, off, midlevel).
Lighting for any presentation or projection wall must be separately controlled.
Locate switches or manual controls in the same space with the controlled luminaires. A
person operating the controls must have a direct line of sight to the controlled luminaires.
Achieve the prescribed lighting performance in each type of premises in respect of
luminance and lighting quality. It is required to fulfill the following:
• Prescribed lighting performance in respect of maintained luminance and luminance
variation is achieved; and
• The limiting unified glare rating is achieved and light sources have an appropriate
color rendering index.
• Install occupancy sensors in all rooms intended for individual occupancy,
conferencing or meeting rooms, open plan offices spaces and hallways or corridors.
OR
OPTION 2 (2 CREDITS)
Electric lighting levels
Demonstrate that office lighting design maintains a luminance level of no more than
specified in MS1525:2007 for 90% of NLA as measured at the working plane (800 mm
above the floor level).
The ambient lighting level should be designed in accordance with the illuminance level
recommended in MS1525:2007.
Task lighting may be provided for occupants who require a higher lighting level either for
their own preference or for various task needs.
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RATING SYSTEM CREDITS
IEQ- 6: DAYLIGHT GLARE CONTROL
INTENT
CREDIT
To connect building occupants with the outdoors, reinforce circadian rhythms, and reduce
the use of electrical lighting by introducing daylight into the space.
3 CREDITS
CREDIT REQUIREMENTS
Ensure day-lighting system is designed with adequate and proper glare control in order not
to negate the benefits of day-lighting.
Reduce discomfort of glare from natural light. Where blinds or screens are fitted on glazing
and atrium as a base building, incorporate provisions to meet the following criteria;
• Eliminate glare from all direct sun penetration and
• Eliminate glare from diffused sky radiation for occupant workspace at viewing
angles of 15° to 60° from the horizontal at eye level (typically 1.2m from floor level);
• Install daylight sensors to light fittings that receive sufficient daylight illuminance.
• Install occupancy sensors in all rooms intended for individual occupancy,
conferencing or meeting rooms, open plan offices spaces and hallways or corridors.
Demonstrate that glare control devices have been designed and installed, such as:
• Automated or manually controlled internal or external glare control devices to all
windows
• Automated glare control devices must be connected to the building management
system
• All manually controlled internal glare control devices must be no wider than 4 linear
meters and be directly controllable by occupants.
REQUIRED SUBMISSION FOR DESIGN ASSESSMENT
• Typical floor plans and sections showing variable position of glare control system.
• Brief description of proposed control mechanism to be provided
• Summary report to describe how view and daylight is assured when glare control
system is engaged
REQUIRED SUBMISSION FOR POST CONSTRUCTION ASSESSMENT
• As-Built drawings and specifications to confirm that building is constructed according
to design drawing and specifications.
• Typical As-Built floor plans and sections showing position of glare control system.
• Description of control mechanism installed.
• Manufacturer’s Information on the blind and control systems provided.
• Summary report to describe how view and daylight is assured when glare control
system is engaged.
• Furnish photographs of each type of typical glared control system installed.
• Describe any deviations or additions to the DA submission.
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RATING SYSTEM CREDITS
IEQ- 7: ACOUSTIC PERFORMANCE
INTENT
CREDIT
To promote occupants’ productivity, comfort, and well-being by providing quality acoustic
comfort.
2 CREDITS
CREDIT REQUIREMENTS
Demonstrate that 90% of the NLA do not exceed the following ambient internal noise level:
OR
• Within the entire building general office, space noise does not exceed 40dBAeq
• Within the baseline building office space, the sound level does not exceed 45dBAeq
for open plan and does not exceed 40dBAeq for closed offices.
Excessive noise can cause discomfort to occupants. Some of the solutions to ensure
acceptable noise level is maintained include:
• Specify acoustical ceiling
• Specify furniture with sound absorbing surfaces on both sides
• Locate photocopiers, fax machines away from the main office areas in a separate
area
• Insulate partition cavities
• Mechanical equipment room to be located away from office and conference rooms
REQUIRED SUBMISSION FOR DESIGN ASSESSMENT
• Design report on strategies to ensure internal noise level is maintained at the
prescribed levels.
• Floor plans showing location of Core, M&E, and equipment rooms.
REQUIRED SUBMISSION FOR POST CONSTRUCTION ASSESSMENT
• Report describing the measured internal and external noise sources and features
installed to achieve required noise level.
• As built drawings showing noise control features.
• Manufacturer’s data sheets of the acoustic materials used in building.
• Describe any deviations or additions to the DA submission.
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RATING SYSTEM CREDITS
IEQ- 8: CO2 MONITORING AND CONTROL
INTENT
CREDIT
To promote occupants’ productivity, comfort, and well-being by providing a safe and
pollutant free working environment.
1 CREDIT
CREDIT REQUIREMENTS
Install carbon dioxide (CO2) monitoring and control system with at least one (1) CO2 sensor
at main return air points on each floor to facilitate continuous monitoring and adjustment
of outside air ventilation rates to each floor, and ensure independent control of ventilation
rates to maintain CO2 level < 1,000 ppm.
REQUIRED SUBMISSION FOR DESIGN ASSESSMENT
• Submission of ventilation and control schematics together with description of how
CO2 monitoring and controls are integrated into the ventilation design.
REQUIRED SUBMISSION FOR POST CONSTRUCTION ASSESSMENT
• As-Built drawings showing the installed sensors and controls.
• Summary report on the ventilation design and CO2 monitoring and control system
including information regarding the location, quantity of installed sensors, the
operational parameters and setpoints.
• Manufacturer’s information confirming the specifications of the CO2 sensors.
• Photographic evidence of typical installations.
• Describe any deviations or additions to the DA submission.
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RATING SYSTEM CREDITS
IEQ- 9: MOLD PREVENTION
INTENT
CREDIT
To promote occupants’ productivity, comfort, and well-being by providing a safe and
pollutant free working environment.
1 CREDIT
CREDIT REQUIREMENTS
Design systems which reduce the risk of mold growth and its associated detrimental impact
on occupant health in accordance with the WHO guidelines for indoor air quality.
Demonstrate that the air-conditioning and mechanical ventilation system will maintain a
positive indoor air pressure relative to the exterior, and can actively control indoor air
humidity to be no more than 70% RH without the use of primary active reheat system
(which consumes additional energy).
Ensure that excessive moisture in building is taken into consideration during design, and
be controlled and monitored during construction and operation stages by control of the
following:
OR
•
•
•
•
•
•
•
Rainwater leakage through roof and walls
Infiltration of moist air
Diffusion of moisture through walls, roof and floors
Groundwater intrusion into basements and crawl spaces through walls and floors
Leaking or burst pipes
Indoor moisture sources
Construction moisture
The above mentioned measures are not necessary or applicable if the building is fully
naturally ventilated.
REQUIRED SUBMISSION FOR DESIGN ASSESSMENT
• Summary report outlining the strategies adopted to meet the credit requirements.
• A copy of specifications for the strategies to be carried out.
REQUIRED SUBMISSION FOR POST CONSTRUCTION ASSESSMENT
• As-Built drawings or as-Built specifications confirming that the building has been
constructed in accordance with the design stage drawings/specifications.
• Manufacturer’s information on all relevant materials specified for mold prevention
and/or resistance, to verify credit compliance.
• Documentation evidence during construction of the precautions taken for mold
prevention, e.g. photographs of material storage and protection for items that are
susceptible to mold growth as identified in the DA submission stage.
• Provide 24-hour record (during full occupancy) of Temperature-Relative Humidity
measurements for at least two (2) areas acceptable to the GBI Certifier.
• Describe any deviations or additions to the DA submission.
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RATING SYSTEM CREDITS
IEQ- 10: QUALITY VIEWS
INTENT
CREDIT
To give building occupants a connection to the natural outdoor environment by providing
quality views.
1 CREDIT
CREDIT REQUIREMENTS
Achieve a direct line of sight to the outdoors via vision glazing for 75% of all regularly
occupied floor area.
View glazing in the contributing area must provide a clear image of the exterior, not
obstructed by frits, fibers, pattern glazing or added tints that distort color balance.
Additionally, 75% of all regularly occupied floor area must have at least two of the four
kinds of views:
• Multiple lines of sight to vision glazing in different directions of at least 90 degrees
apart
• Views that include at least two of the following
• Flora and fauna or sky
• Movement
• Objects at least 8 meters from the exterior of the glazing
• Unobstructed views located within the distance of three times the head height of
the vision glazing
Include in the calculations any permanent interior obstructions. Moveable furniture may be
excluded.
Views into interior atria may be used to meet 30% of the required area.
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RATING SYSTEM CREDITS
IEQ- 11: POST OCCUPANCY COMFORT SURVEY
INTENT
CREDIT
To verify occupant satisfaction with the quality of the indoor environment.
1 CREDIT
CREDIT REQUIREMENTS
Conduct a post-occupancy comfort survey of building occupants within 12 months after
occupancy/building completion. This survey should collect anonymous responses about
thermal comfort, visual comfort and acoustic comfort in a building.
It should include an assessment of overall satisfaction with thermal, visual and acoustic
performance and identification of thermal-related, visual-related and acoustic-related
problems.
Develop a plan for corrective action if the survey results indicate that more than 20%
of occupants are dissatisfied with the overall comfort in the building. This plan should
include measurement of relevant environmental variables in problem areas. The relevant
environmental variables include:
•
•
•
•
Temperature, relative humidity, air speed and mean radiant temperature
Lighting level and glare problem
Background noise level
Odor problem, CO2 level, VOCs, and particulate concentration
REQUIRED SUBMISSION
• Summary report of the strategies that will be undertaken to meet the credit
compliance. (Design Assessment)
• Survey questionnaire used to collect responses from the occupants.
• Objective measurement plan illustrating the areas and measurements undertaken.
• Analysis report of the results of the survey and measurements.
• Corrective action plan and measures undertaken to rectify the problem.
• Describe any deviations or additions to the Design Assessment.
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