International Energy Conservation Code 2009Masterpiece on the Mississippi
TO: The Honorable Mayor and City Council Members
FROM: Michael C. Van Milligen, City Manager
SUBJECT: 2009 International Energy Conservation Code
DATE: July 14, 2010
MCVM:jh
Attachment
cc: Barry Lindahl, City Attorney
Cindy Steinhauser, Assistant City Manager
Rich Russell, Building Services Manager
Michael C. Van Milligen
Dubuque
All-Ame icaCNy
2007
Building Services Manager Rich Russell recommends City Council approval to amend
the City Ordinance by adopting the 2009 International Energy Conservation Code
published by the International Code Council. This amendment will allow general
contractors, architects, system designers and Building Services staff members to use
an up -to -date energy code and will help the City maintain or improve its current
Insurance Services Organization (ISO) rating of 4. This amendment would also
contribute to achieving the City Council's top priority of a "Green Community." The City
of Dubuque adopted the 2006 edition of the International Energy Conservation Code on
January 22, 2008.
I concur with the recommendation and respectfully request Mayor and City Council
approval.
Masterpiece on the Mississippi
TO:
FROM:
SUBJECT:
DATE:
Michael C. Van Milligen, City Manager
Rich Russell, Building Services Manager VL" --
2009 International Energy Conservation Code
July 14, 2010
Dubuque
kitil
AI-America C y
f
2007
INTRODUCTION: The purpose of this memo is to recommend the amending of the City
Ordinance by adoption of the 2009 International Energy Conservation Code (IECC)
published by the International Code Council, Inc.
BACKGROUND: The adoption of the 2009 International Energy Conservation Code will
enable enforcement and amendment of this code at the local level. The City Council
previously adopted the 2006 International Energy Conservation Code with the passage
of Ordinance 4 -08 on January 22, 2008.
This code focuses on energy efficiency of new residential and commercial construction,
as well as additions and alterations to existing buildings. These goals are met by
regulating building envelope, mechanical systems and electrical systems.
The 2009 IECC will produce approximately 15% in energy efficiency gains compared to
the 2006 edition, according to the U.S. Department of Energy (DOE).
DISCUSSION: The adoption of the 2009 International Energy Conservation Code will
allow general contractors, architects, system designers and Building Services staff
members to use an up -to -date energy code. The adoption of the 2009 International
Energy Conservation Code will help us maintain or improve our current ISO rating of 4.
The adoption of the 2009 International Energy Conservation Code would also contribute
to achieving the Council top priority of a "Green Community ".
The ordinance continues to have a few amendments intended to accommodate the
special needs off gaming facilities.
RECOMMENDATION: I recommend the 2009 International Energy Conservation Code
be adopted and that the amendments listed be adopted as well. / have attached an
ordinance for the City Council's use.
Prepared by: Crenna M. Brumwell, Esq. 300 Main Street Suite 330 Dubuque IA 52001 563 589 -4381
ORDINANCE NO. 40-10
AMENDING CITY OF DUBUQUE CODE OF ORDINANCES TITLE 14 BUILDING
DEVELOPMENT, CHAPTER 1 BUILDING CODES, ARTICLE C ENERGY
CONSERVATION CODE, SECTION 14 -1C -1 INTERNATIONAL ENERGY
CONSERVATION CODE ADOPTED BY REPEALING SUCH SECTION AND
ENACTING A NEW SECTION IN LIEU THEREOF AND SECTION 14 -1C -2
INTERNATIONAL ENERGY CONSERVATION CODE AMENDMENTS PROVIDING
FOR THE ADOPTION OF THE INTERNATIONAL ENERGY CONSERVATION CODE
(2009) AND MAKING AMENDMENTS THERETO
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
DUBUQUE, IOWA:
Section 1. Section 14-1C-1 of the City of Dubuque Code of Ordinances is
amended by repealing Sections 14-1C-1 and enacting a new Section 14-1C-1 in lieu
thereof as follows:
Sec. 14 -1 C -1 International Energy Conservation Code - Adopted.
Except as hereinafter added to, deleted, modified, or amended, there is hereby adopted
by reference as the energy code of the city that certain code known as the International
Energy Conservation Code, 2009 Edition, and as published by the International Code
Council, Inc., and the thermal efficiency provisions of such code shall be controlling in
the construction of all new construction and any renovation project that effects the
building thermal envelope of a structure within the corporate limits of the city and the
lighting efficiency provisions of such code shall be controlling in the new construction of
buildings which are open to the general public during normal business hours and shall
be known as the "Dubuque Energy Code ". A copy of the International Energy
Conservation Code 2009 Edition, as adopted, shall be on file in the office of the city
clerk for public inspection.
Section 2. Section 14-1C-2 of the City of Dubuque Code of Ordinances is
amended by repealing Section 14-1C-2 and enacting the following additions, deletions,
modifications, or amendments of the International Energy Conservation Code, 2009
Edition, adopted in Section 14-1C-1 to read as follows:
SECTION 202
GENERAL DEFINITIONS
ABOVE -GRADE WALL. A wall more than 50 percent above grade and enclosing
conditioned space. This includes between -floor spandrels, peripheral edges of floors,
roof and basement knee walls, dormer walls, gable end walls, walls enclosing a
mansard roof and skylight shafts.
ACCESSIBLE. Admitting close approach as a result of not being guarded by locked
doors, elevation or other effective means (see "Readily accessible ").
ADDITION. An extension or increase in the conditioned space floor area or height of a
building or structure.
AIR BARRIER. Material(s) assembled and joined together to provide a barrier to air
leakage through the building envelope. An air barrier may be a single material or a
combination of materials.
ALTERATION. Any construction or renovation to an existing structure other than repair
or addition that requires a permit. Also, a change in a mechanical system that involves
an extension, addition or change to the arrangement, type or purpose of the original
installation that requires a permit.
APPROVED. Approval by the code official as a result of investigation and tests
conducted by him or her, or by reason of accepted principles or tests by nationally
recognized organizations.
AUTOMATIC. Self- acting, operating by its own mechanism when actuated by some
impersonal influence, as, for example, a change in current strength, pressure,
temperature or mechanical configuration (see "Manual ").
BASEMENT WALL. A wall 50 percent or more below grade and enclosing conditioned
space.
BUILDING. Any structure used or intended for supporting or sheltering any use or
occupancy.
BUILDING THERMAL ENVELOPE. The basement walls, exterior walls, floor, roof, and
any other building element that enclose conditioned space. This boundary also includes
the boundary between conditioned space and any exempt or unconditioned space.
&FACTOR (THERMAL CONDUCTANCE). The coefficient of heat transmission
(surface to surface) through a building component or assembly, equal to the time rate of
heat flow per unit area and the unit temperature difference between the warm side and
cold side surfaces (Btu /h ft2 x oF) [W /(m2 x K)].
CODE OFFICIAL. The officer or other designated authority charged with the
administration and enforcement of this code, or a duly authorized representative.
COMMERCIAL BUILDING. For this code, all buildings that are not included in the
definition of "Residential buildings."
CONDITIONED FLOOR AREA. The horizontal projection of the floors associated with
the conditioned space.
CONDITIONED SPACE. An area or room within a building being heated or cooled,
containing uninsulated ducts, or with a fixed opening directly into an adjacent
conditioned space.
CRAWL SPACE WALL. The opaque portion of a wall that encloses a crawl space and
is partially or totally below grade.
CURTAIN WALL. Fenestration products used to create an external nonload- bearing
wall that is designed to separate the exterior and interior environments.
DAYLIGHT ZONE.
1. Under skylights. The area under skylights whose horizontal dimension, in
each direction, is equal to the skylight dimension in that direction plus either the
floor -to ceiling height or the dimension to a ceiling height opaque partition, or
one -half the distance to adjacent skylights or vertical fenestration, whichever is
least.
2. Adjacent to vertical fenestration. The area adjacent to vertical fenestration
which receives daylight through the fenestration. For purposes of this definition
and unless more detailed analysis is provided, the daylight zone depth is
assumed to extend into the space a distance of 15 feet (4572 mm) or to the
nearest ceiling height opaque partition, whichever is less. The daylight zone
width is assumed to be the width of the window plus 2 feet (610 mm) on each
side, or the window width plus the distance to an opaque partition, or the window
width plus one -half the distance to adjacent skylight or vertical fenestration,
whichever is least.
DEMAND CONTROL VENTILATION (DCV). A ventilation system capability that
provides for the automatic reduction of outdoor air intake below design rates when the
actual occupancy of spaces served by the system is less than design occupancy.
DUCT. A tube or conduit utilized for conveying air. The air passages of self- contained
systems are not to be construed as air ducts.
DUCT SYSTEM. A continuous passageway for the transmission of air that, in addition
to ducts, includes duct fittings, dampers, plenums, fans and accessory air - handling
equipment and appliances.
DWELLING UNIT. A single unit providing complete independent living facilities for one
or more persons, including permanent provisions for living, sleeping, eating, cooking
and sanitation.
ECONOMIZER, AIR. A duct and damper arrangement and automatic control system
that allows a cooling system to supply outside air to reduce or eliminate the need for
mechanical cooling during mild or cold weather.
ECONOMIZER, WATER. A system where the supply air of a cooling system is cooled
indirectly with water that is itself cooled by heat or mass transfer to the environment
without the use of mechanical cooling.
ENERGY ANALYSIS. A method for estimating the annual energy use of the proposed
design and standard reference design based on estimates of energy use.
ENERGY COST. The total estimated annual cost for purchased energy for the building
functions regulated by this code, including applicable demand charges.
ENERGY RECOVERY VENTILATION SYSTEM. Systems that employ air -to -air heat
exchangers to recover energy from exhaust air for the purpose of preheating,
precooling, humidifying or dehumidifying outdoor ventilation air prior to supplying the air
to a space, either directly or as part of an HVAC system.
ENERGY SIMULATION TOOL. An approved software program or calculation -based
methodology that projects the annual energy use of a building.
ENTRANCE DOOR. Fenestration products used for ingress, egress and access in
nonresidential buildings, including, but not limited to, exterior entrances that utilize
latching hardware and automatic closers and contain over 50- percent glass specifically
designed to withstand heavy use and possibly abuse.
EXTERIOR WALL. Walls including both above -grade walls and basement walls.
FAN BRAKE HORSEPOWER (BHP). The horsepower delivered to the fan's shaft.
Brake horsepower does not include the mechanical drive losses (belts, gears, etc.).
FAN SYSTEM BHP. The sum of the fan brake horsepower of all fans that are required
to operate at fan system design conditions to supply air from the heating or cooling
source to the conditioned spacers) and return it to the source or exhaust it to the
outdoors.
FAN SYSTEM DESIGN CONDITIONS. Operating conditions that can be expected to
occur during normal system operation that result in the highest supply fan airflow rate to
conditioned spaces served by the system.
FAN SYSTEM MOTOR NAMEPLATE HP. The sum of the motor nameplate horsepower
of all fans that are required to operate at design conditions to supply air from the heating
or cooling source to the conditioned spacers) and return it to the source or exhaust it to
the outdoors.
FENESTRATION. Skylights, roof windows, vertical windows (fixed or moveable),
opaque doors, glazed doors, glazed block and combination opaque /glazed doors.
Fenestration includes products with glass and nonglass glazing materials.
F- FACTOR. The perimeter heat loss factor for slab -on -grade floors (Btu /h x ft x OF)
[W /(m x K)].
GAMBLING FACILITY — BACK OF HOUSE. Areas of a gambling structure or moored
barge and associated hotel, meeting, entertainment or recreation spaces that are only
accessible to authorized personnel and not to the general public and guests, such as
employee and delivery entrances, employee lounges and dining areas, administrative
offices and meeting rooms, maintenance areas, storage rooms, service corridors, etc.
GAMBLING FACILITY — FRONT OF HOUSE. Areas of gambling structure or moored
barge and associated hotel, meeting, entertainment or recreation spaces that are
physically accessible or visible to the general public and guests, such as the exterior
facades, landscaping, entries, lobbies, guestroom corridors, porte cocheres, retail
shops, restaurants, theaters, gaming areas, guest conference and meeting rooms, other
areas of entertainment or recreation, etc.
HEAT TRAP. An arrangement of piping and fittings, such as elbows, or a commercially
available heat trap that prevents thermosyphoning of hot water during standby periods.
HEATED SLAB. Slab -on -grade construction in which the heating elements, hydronic
tubing, or hot air distribution system is in contact with, or placed within or under, the
slab.
IDGH - EFFICACY LAMPS. Compact fluorescent lamps, T -8 or smaller diameter linear
fluorescent lamps, or lamps with a minimum efficacy of:
1. 60 lumens per watt for lamps over 40 watts,
2. 50 lumens per watt for lamps over 15 watts to 40 watts, and
3. 40 lumens per watt for lamps 15 watts or less.
HUMIDISTAT. A regulatory device, actuated by changes in humidity, used for automatic
control of relative humidity.
INFILTRATION. The uncontrolled inward air leakage into a building caused by the
pressure effects of wind or the effect of differences in the indoor and outdoor air density
or both.
INSULATING SHEATHING. An insulating board with a core material having a minimum
R -value of R -2.
KITCHEN DISPLAY. A substantially open cooking and food preparation facility, located
in the front -of -house dining room /lounge area specifically for the purpose of
demonstrating the function of food and drink preparation.
LABELED. Equipment, materials or products to which have been affixed a label, seal,
symbol or other identifying mark of a nationally recognized testing laboratory, inspection
agency or other organization concerned with product evaluation that maintains periodic
inspection of the production of the above - labeled items and whose labeling indicates
either that the equipment, material or product meets identified standards or has been
tested and found suitable for a specified purpose.
LISTED. Equipment, materials, products or services included in a list published by an
organization acceptable to the code official and concerned with evaluation of products
or services that maintains periodic inspection of production of listed equipment or
materials or periodic evaluation of services and whose listing states either that the
equipment, material, product or service meets identified standards or has been tested
and found suitable for a specified purpose.
LOW- VOLTAGE LIGHTING. Lighting equipment powered through a transformer such
as a cable conductor, a rail conductor and track lighting.
MANUAL. Capable of being operated by personal intervention (see "Automatic "). .
NAMEPLATE HORSEPOWER. The nominal motor horsepower rating stamped on the
motor nameplate.
PROPOSED DESIGN. A description of the proposed building used to estimate annual
energy use for determining compliance based on total building performance.
READILY ACCESSIBLE. Capable of being reached quickly for operation, renewal or
inspection without requiring those to whom ready access is requisite to climb over or
remove obstacles or to resort to portable ladders or access equipment (see
"Accessible'9.
REPAIR. The reconstruction or renewal of any part of an existing building.
RESIDENTIAL BUILDING. For this code, includes R -3 buildings, as well as R -2 and R -4
buildings three stories or less in height above grade.
ROOF ASSEMBLY. A system designed to provide weather protection and resistance to
design loads. The system consists of a roof covering and roof deck or a single
component serving as both the roof covering and the roof deck. A roof assembly
includes the roof covering, underlayment, roof deck, insulation, vapor retarder and
interior finish.
R -VALUE (THERMAL RESISTANCE). The inverse of the time rate of heat flow through
a body from one of its bounding surfaces to the other surface for a unit temperature
difference between the two surfaces, under steady state conditions, per unit area (h . ftz
. °FIBtu) [(m2 . K)/W).
SCREW LAMP HOLDERS. A lamp base that requires a screw -in -type lamp, such as a
compact - fluorescent, incandescent, or tungsten - halogen bulb.
SERVICE WATER HEATING. Supply of hot water for purposes other than comfort
heating.
SKYLIGHT. Glass or other transparent or translucent glazing material installed at a
slope of 15 degrees (0.26 rad) or more from vertical. Glazing material in skylights,
including unit skylights, solariums, sunrooms, roofs and sloped walls is included in this
definition.
SLEEPING UNIT. A room or space in which people sleep, which can also include
permanent provisions for living, eating, and either sanitation or kitchen facilities but not
both. Such rooms and spaces that are also part of a dwelling unit are not sleeping units.
SOLAR HEAT GAIN COEFFICIENT (SHGC). The ratio of the solar heat gain entering
the space through the fenestration assembly to the incident solar radiation. Solar heat
gain includes directly transmitted solar heat and absorbed solar radiation which is then
reradiated, conducted or convected into the space.
STANDARD REFERENCE DESIGN. A version of the proposed design that meets the
minimum requirements of this code and is used to determine the maximum annual
energy use requirement for compliance based on total building performance.
STOREFRONT. A nonresidential system of doors and windows mulled as a composite
fenestration structure that has been designed to resist heavy use. Storefront systems
include, but are not limited to, exterior fenestration systems that span from the floor
level or above to the ceiling of the same story on commercial buildings.
SUNROOM. A one -story structure attached to a dwelling with a glazing area in excess
of 40 percent of the gross area of the structure's exterior walls and roof.
THERMAL ISOLATION. Physical and space conditioning separation from conditioned
space(s). The conditioned space(s) shall be controlled as separate zones for heating
and cooling or conditioned by separate equipment.
THERMOSTAT. An automatic control device used to maintain temperature at a fixed or
adjustable set point.
U- FACTOR (THERMAL TRANSMITTANCE). The coefficient of heat transmission (air to
air) through a building component or assembly, equal to the time rate of heat flow per
unit area and unit temperature difference between the warm side and cold side airfilms
(Btu /h . ft2 . OF) (W /(m2 . K»).
VENTILATION. The natural or mechanical process of supplying conditioned or
unconditioned air to, or removing such air from, any space.
VENTILATION AIR. That portion of supply air that comes from outside (outdoors) plus
any recirculated air that has been treated to maintain the desired quality of air within a
designated space.
ZONE. A space or group of spaces within a building with heating or cooling
requirements that are sufficiently similar so that desired conditions can be maintained
throughout using a single controlling device.
Sec. 403.2. Reserved.
Sec. 505.5.1. Total connected interior lighting power. The total connected interior
lighting power (watts) shall be the sum of the watts of all interior lighting equipment as
determined in accordance with Section 505.5.1.1 through 505.5.1.4.
Exceptions: The connected power associated with the following lighting equipment is
not included in the calculating total connected lighting power.
1. Specialized medical, dental, and research lighting.
2. Professional and /or competition level sports playing area lighting.
3. Display lighting for exhibits in galleries, museums, monuments, and
convention centers.
4. Sleeping unit lighting in hotels, motels, boarding houses or similar
buildings.
5. Emergency lighting automatically off during normal building operation.
6. Gambling Facility — Front of House areas
7. Display kitchen and bar areas.
Sec. 505.5.2. Interior lighting power. The total interior lighting power (watts) is the sum
of all interior lighting powers for all area in the building covered in this permit. The
Height (in feet) above the finished floor to
the bottom of luminaire(s)
Multiply LPD by
12 or less
1.0
13
1.05
14
1.10
15
1.15 .
16
1.21
17
1.47
18
1.65
19
1.84
20 or more
2.04
interior lighting power is the floor area for each building area type listed in Table 505.5.2
times the value from Table 505.5.2 for that area. For areas with high ceilings and
lighting fixture mounting heights that exceed 12 feet, an adjustment factor is allowed by
multiplying the LPD value from Table 505.5.2 with the adjustment factor in Table
505.5.3. For the purposes of this method, an "area" shall be defined as all contiguous
spaces that accommodate or are associated with a single building area type as listed in
Table 505.5.2 When this method is used to calculate the total interior lighting power for
an entire building, each building area type shall be treated as a separate area.
TABLE 505.5.3
DJUSTMENTS FOR MOUNTING HEIGHTS ABOVE FLOOR
Sec. 505.6. Exterior lighting. (Mandatory).. When the power for the exterior lighting is
supplied through the energy service to the building, all exterior lighting, other than low -
voltage lighting, shall comply with Sections 505.6.1 and 505.6.2.
Exceptions:
1. Where approved because of historical, safety, signage or emergency
considerations.
2. Light Emitting Diode (LED), neon, and cold cathode exterior lamp
sources.
3. Gambling Facility — Front of House areas
Section 3. This Ordinance shall take effect on publication.
Passed, approved and adopted the 19th day of
Roy D. E jiol, Mayor
July
, 2010.
4,,
eanne F. Schneider, City Clerk