05/15/15
DESIGN NO. _______
1
1.01
SUMMARY
A.
1.02
5
4
1.03
4
5
5
1.04
SECTION S01550
INDOOR AIR QUALITY (IAQ) REQUIREMENTS
This
Section
includes
general
requirements
and
procedures for the Contractor for maintaining and
controlling indoor air quality during construction.
RELATED SECTIONS
A.
Installation Sequence of Finish
Materials . . . . . . . . . . . . . . . Section S01560
B.
Existing Premises Work . . . . . . . .
Section S01900
SUBMITTALS
A.
IAQ Management Plan:
Submit required management plan
as set forth hereinafter.
B.
Submit six digital photographs documenting Indoor Air
Quality measures implemented.
C.
Submit
use.
D.
Submit letter stating that carpeting in occupied areas
adjacent to work areas was HEPA vacuumed daily.
E.
Submit a written description of the project’s specific
flush-out
procedures
including
data
regarding
temperature, airflow, filters used during flush-out
and duration of the flush out.
F.
Submit completed Contractor’s Certification Form.
Section S01352.
cut
sheets
of
filtration
media
proposed
for
See
QUALITY ASSURANCE
A.
Subcontractors and their employees shall be provided
instruction and training by the Contractor as defined
in the IAQ Management Plan.
B.
The
IAQ
Management
Plan
shall
highlight
the
requirements of the Sheet Metal and Air Conditioning
National Design/Builders Association (SMACNA), IAQ
NYCSCA
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 1
05/15/15
DESIGN NO. _______
Guidelines for Occupied Buildings under Construction,
2nd Addition 2007, ANSI/SMACNA 008-2008 (Chapter 3) and
shall include the principles and practices set forth
in this Section.
1.05
INDOOR AIR QUALITY MANAGEMENT PLAN
A.
Contractor’s IAQ Construction Plan shall include
procedures to prevent indoor air quality problems
resulting from the construction/renovation process in
order to help sustain the comfort and well-being of
construction workers and building occupants.
1.
The
Plan
shall
identify
the
requirements
incorporated from the
Sheet Metal and Air
Conditioning National Design/Builders Association
(SMACNA), IAQ Guidelines for Occupied Buildings
under Construction, 2nd Addition 2007, ANSI/SMACNA
008-2008
(Chapter
3).
Identify
potential
contaminant pathways in the plan.
2.
Contractor’s detailed plan shall be based on the
particular characteristics of the Project, and
include the items listed in this Section as a
minimum.
In addition utilize the following
control approaches as applicable for the Project:
a.
b.
c.
d.
e.
f.
g.
1.06
Protecting stored items of the HVAC systems
Containing the work area;
Limit or avoid use of permanent HVAC systems
during demolition and construction;
Reducing emissions;
Intensifying housekeeping;
Rescheduling work hours; or
Moving occupants.
HVAC PROTECTION
A.
NYCSCA
Store HVAC equipment and all parts of the HVAC system
in a clean, dry location.
Until HVAC equipment and
system
items
(ducting,
registers,
air
handler
components, fans, motors, etc) have been installed,
they shall be kept covered with plastic film or in a
location where it will not be exposed to moisture,
dust, or other contaminants.
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 2
05/15/15
DESIGN NO. _______
B.
Seal all HVAC inlets and outlets.
Use of the HVAC
system shall be avoided during construction until
drywall
construction
is
complete.
Temporary
ventilation may be installed to remove contaminants.
All air inlets and outlets shall be sealed during
construction.
These include outside air inlets,
grilles,
diffusers,
supply
ducts,
return
ducts,
ceiling plenums, VAV (variable-air volume) plenum
intakes, and window ventilator or air conditioning
units. Openings shall be sealed with plastic film and
tape that can be removed cleanly.
C.
Seal HVAC components during installation. For ducting
runs that require several days to install, sections
shall be sealed off as they are completed.
Seals
shall be removed prior to continuing the ducting run.
Other components of the HVAC system shall be subjected
to the same requirements to protect them from
contamination.
D.
Use temporary filtration media. If the HVAC system is
to be used while construction work is being done,
temporary filtration media shall be installed at each
return grill.
Such filtration media shall have a
minimum filtration efficiency (Minimum Efficiency
Reporting Value-MERV per ASHRAE 52.2) of 8.
After
Substantial Completion use new filtration with a MERV
rating of 13 in areas of the work where dust producing
activities are generated.
E.
Inspect filters regularly.
When the HVAC system is
being used during construction and temporary filters
are installed, filters shall be inspected weekly and
replaced as needed.
F.
When outdoor construction activities generate dust,
combustion emissions, or other contaminants, operable
windows and outside air supplies to enclosed portions
of the building shall be protected in a manner that
prevent
contaminants
from
entering
the
building
without harming the equipment.
1.07
SOURCE CONTROL
A.
NYCSCA
Protect against moisture exposure. Building materials
should be kept dry with special care taken with
materials susceptible to the growth of mold and
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 3
05/15/15
DESIGN NO. _______
bacteria such as wood, porous insulation, paper, and
fabric.
Schedule deliveries so that materials that
are susceptible to mold growth are installed after the
enclosure is watertight.
Cover building materials to
prevent rain damage, and if resting on the ground, use
spacers to allow air to circulate between the ground
and the materials.
1.08
B.
Water damaged materials should be dried within 24
hours.
Due to the possibility of mold and bacterial
growth, materials that are damp or wet for more than
24 hours may need to be discarded. Immediately remove
materials showing signs of mold and mildew, including
any with moisture stains, from the site and properly
dispose of them.
Replace moldy materials with new,
undamaged materials.
C.
In the event of rain or groundwater gaining entry to
the building interior during construction, notify the
Authority.
D.
Avoid tracking pollutants into work areas.
1.
Control
access to the building interior
minimize the tracking in of contaminants.
to
2.
Provide temporary entryway surfaces designed to
remove moisture and contaminants from workers
shoes.
3.
Prevent the ingress of rodents and pests.
4.
Do not permit smoking inside the building.
PATHWAY INTERRUPTION
A.
NYCSCA
Incorporate contaminant pathway interruption methods
in the Indoor Air Quality Management Plan. Methods of
pathway interruption detailed in the SMACNA IAQ
Guidelines for Occupied Buildings include:
1.
Depressurize the work area while maintaining the
required filtering and rate.
2.
Pressurize adjacent occupied space. Including
temporary rebalancing. Ensure that the HVAC system
remains protected from construction emissions.
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 4
05/15/15
1.09
DESIGN NO. _______
3.
Erect barriers to contain construction area.
4.
Locate pollutant sources away from critical air
flow pathways.
5.
Temporarily seal the building. Where construction
emissions are occurring on the roof or adjacent to
a building, contaminants may be drawn in through
cracks in the outside air intake if the building
is under negative pressure or other entries.
HOUSEKEEPING
A.
Minimize accumulation of dust and other contaminants.
Construction practices shall be used that minimize the
production of dust and other contaminants from
construction activities. Use integral dust-collection
systems on machinery that generates dust.
Where
possible, confine dust-generation activities to areas
where
clean-up
can
be
carried
out
easily
and
contaminants will not be tracked to other areas.
B.
Suppress Dirt. Wetting agents or sweeping compounds
shall be used to deep dust from becoming airborne.
Use other methods if wetting will harm surfaces being
protected.
C.
Clean up dust. Cleaning frequency shall be increased
when dust accumulation is noted.
Use equipment
designed to retain dust within the clean up media.
D.
Clean up spills.
All
of solvent-containing
using approved methods
spills shall be mopped
E.
Keep work area dry. The entire area shall be kept as
dry as practicable by promptly repairing any leaks
that allow rainwater entry and mopping up any water
accumulation.
Use dehumidification if necessary for
prompt drying of wetted spaces.
F.
Un-vented
combustion
(e.g.,
propane
or
“salamander” space heaters) shall not be used.
NYCSCA
spills and excess applications
products should be cleaned up
as soon as practicable. Water
up promptly.
diesel
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 5
05/15/15
DESIGN NO. _______
G.
Seal
containers
containing
volatile
liquids.
Containers of fuel, paints, finishes, and solvents
shall be kept tightly sealed and preferably stored
outside of the building when not in use.
1.10
SEQUENCING AND SCHEDULING
A.
Schedule
the
installation
of
porous
materials,
exclusive of CMU and sprayed-fireproofing, only after
closing
in
building
or
providing
weather-tight
protection.
Porous materials, such as insulation and
drywall, shall not be installed in a building until
the envelope is weather-tight.
B.
Furnishing shall not be installed until interior
finishes (paints, stains and sealants) have been
applied and have fully cured.
C.
Provide adequate ventilation during curing period. To
aid in curing of interior finishes and other products
used during construction and to remove pollutants
after
drywall
installation
is
complete,
provide
adequate ventilation with 100% outside air, and proper
filtration.
In humid periods or when very highmoisture
materials
are
present,
supplementary
dehumidification may be required during this curing
period.
1.11 CONSTRUCTION INDOOR AIR QUALITY MANAGEMENT
A.
Comply
with
SMACNA
IAQ
Guideline
Buildings under Construction.
2
Occupied
If Authority authorizes the use of permanent heating,
cooling,
and
ventilating
systems
during
construction period as specified in Section
S01500
"Temporary
Facilities
and
Controls,"
install filter media having a MERV 8 according to
ASHRAE 52.2 at each return-air inlet for the airhandling system used during construction.
1.
NYCSCA
for
Replace all air filters immediately prior to the
building air flush-out.
Replacement air filters
for
central
unitary
air
handlers
and
air
conditioning equipment shall have a MERV 13
according to ASHRAE 52.2. Terminal equipment
replacement air filters shall have a MERV of 7.
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 6
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DESIGN NO. _______
B.
Conduct a building flush-out.
Replace air filters
after building air flush-out. Utilizing differential
pressure sensors (DPS) across the filters for the
central units and if the differential pressure drop
exceeds more than 20% of the high limit pressure drop
associated with a fully dirty filer, replace the
filters.
5
3
1.
Prior to Occupancy: Flush-out after construction
ends and with all interior finishes installed.
Perform building flush-out by supplying a total
air volume of 14,000 cu. Ft. of outdoor air per
square foot of floor area while maintaining an
internal temperature of at least 60°F and an RH
no higher than 60%.
2.
Occupancy Prior to Completion of Flush-Out:
Occupy after delivery of a minimum of 3,500 cu.
Ft. of outside air per square foot of floor area
to the space requiring prior occupancy.
After
occupancy the space shall be ventilated at a
minimum rate of 0.30 cfm/sq. ft. of outside air
or the design minimum of Sections 4 through 7 of
ASHRAE 62.1-2004, whichever is greater.
During
each day the flush-out shall begin 3 hours prior
to occupancy and continue during occupancy.
Maintain procedures until 14,000 cu.ft./sq.ft. of
outside air is delivered.
END OF SECTION
Notes to Specifier (Delete from Specifications)
1.
This Section is to be used for all projects.
2.
Coordinate with Section S01500 "Temporary Facilities and
Controls." Identify air handlers and associated return-air
inlets authorized by Authority for use during construction
period.
3.
Temporary provisions must be required to relieve or exhaust
outdoor air introduced during building air flush-out.
4.
Include
for
projects
such
modernization and renovations.
NYCSCA
as
phased
occupancy,
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 7
05/15/15
5.
DESIGN NO. _______
Omit for projects where NYC Green Schools Rating System
compliance is not required (Typical of CIP projects, UPK
Center conversions and fit-outs).
Verify for referenced
project.
*
NYCSCA
*
*
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 8
05/15/15
DESIGN NO. _______
LIST OF SUBMITTALS
SUBMITTAL
DATE SUBMITTED
DATE APPROVED
IAQ Management Plan:
______________
_____________
Six Photos of IAQ measures:
______________
_____________
Cut Sheets of Filtration Media:
______________
_____________
3
HEPA vacuuming of carpet letter: ______________
_____________
4
Description of flush-out:
______________
_____________
4
Contractors Certification Form:
______________
_____________
NYCSCA
INDOOR AIR QUALITY (IAQ) REQUIREMENTS S01550 - 9