HomeMy WebLinkAboutordinance.council.010-03 ORDINANCE NO. 10
(SERIES OF 2003)
AN ORDINANCE OF THE CITY COUNCIL OF THE CITY OF ASPEN,
COLORADO, TO AMEND SECTION 8.20.020 (w) OF THE MUNICIPAL CODE
OF THE CITY OF ASPEN RELATING TO THE CITY OF ASPEN ENERGY
CONSERVATION CODE
WItEREAS, the City Council has and continues to support the Building Division
to develop a progressive and innovative energy conservation program, and
WItEREAS it is the policy of the City to encourage features in any development
which will conserve energy resources and minimize the consumption of energy, and
WHEREAS the City is nationally recognized as a leader in energy code
development, and
WHEREAS, the City Council finds energy conservation is consistent with the goals
and elements of the Aspen Area Community Plan.
NOW, THEREFORE, BE IT ORDAINED BY ~ CITY COUNCIL OF THE CITY
OF ASPEN, COLORADO, THAT IT HEREBY ADOPTS THE CITY OF ASPEN
ENERGY CONSERVATION CODE:
Section 1:
That section 8.20.020 (w) is hereby amended to read as follows:
The Chief Building Official shall adopt, publish and enforce adminiStrative and energy
conservation standards to implement an Energy Conservation Code. At least one (1) copy
of said regulations shall be available for inspection during regular business hours.
Section 2:
The administrative and interpretive regulations shall be in a form similar to that appended
hereto as Exhibit A.
Section 3:
This Ordinance shall not affect any existing litigation and shall not operate as an abatement of
any action or proceeding now pending under or by virtue of the ordinances repealed or amended
as herein provided, and the same shall be conducted and concluded under such prior ordinances
Section 4:
If any section, subsection, sentence, clause, phrase, or portion of this Ordinance is for any
reason held invalid or unconstitutional h a court of competent jurisdict on, such portion shall be
Ordinance No. 10, Series of 2003
Page 1
deemed a separate, distinct and independent provision and shall not affect the validity of the
remaining portions thereof.
Section 5:
A public heating on the Ordinance shall be held on the 10~ day of February, 2003, at 5:00 p.m.
in the City Council Chambers, Aspen City Halt, Aspen Colorado, fifteen (15) days prior to
which heating a public notice of the same was published in a newspaper of general circulation
within the City of Aspen.
INTRODUCED, READ AND ORDERED PUBLISHED as provided by law,
by the City Council of the City of Aspen on the 27t~ day of January, 2003.
FINALLY, adopted, passed and approved this day of ,2003.
Attest: "~'~' < ~ ~
~ : ~ :;o-Kathryn S..]J~:h, City Clerk ~
Approved as to form:
Ordinance No. 10, Series of 2003
Page 2
ADMINISTRATIVE AND ENERGY CONSERVATION STANDARDS FOR
BUILDINGS
CHAPTER 1
SECTION 101 ~ TITLE, PURPOSE~ AND SCOPE
101.1 Title. These regulations shall be known as the City of Aspen and Pitldn County
Energy Conservation Code, may be eked as such and will be referred to herein as
"this Code".
101.2 Purpose. The purpose of this code is to provide minimum standards for the
conservation of energy obtained from depletable sources by regulating and
controlling the design, construction, quality of materials, location and maintenance o£
all buildings and structures within this jurisdiction and certain equipment specifically
regulated herein.
101.3 Scope. The provisions of this code shall apply to all buildings for which an
application for a building permit or renewal of an existing permit is filed or is
required by law to be filed; and, that are either directly or indirectly conditioned by
mechanical heating or mechanical cooling.
EXCEPTION: Qualified "Historic Buildings', as defined in Chapter 2, Section
209 of this Code. For the purpose of this exception only existing conditioned
space and existing exterior building envelope dements are exempt. Building
additions to or areas of complete demolition are subject to section 305 or 306.
Snow melt and pool and spa installations shall be subject to section 311.
SECTION 102 - RESERVED
SECTION 103 - VIOLATIONS AND PENALTIES
103.1 Violations. It shall be unlawful for anY person, including an owner, occupant or
builder, to erect, construct, enlarge, alter, repair, move, improve, remove, convert or
demolish, equip, use, occupy or maintain any building or structure or cause the same
to be done, contrary to or in violation of any provisions of this code.
103.2 Penalties. A violation of any of the provisions of this code shall constitute a
misdemeanor, punishable upon conviction by a fine not exceeding one thousand
dollars ($1,000.00), or by imprisonment not exceeding ninety (90) days, or both such
fine and imprisonment. A separate offense shall be deemed committed on each day
or portion thereof that the violation of any of the provisions of this code occurs or
continues unabated after the time the limit set for abatement of the violation
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SECTION 104 - ORGANIZATION AND ENFORCEMENT
See Section 104 of the 1997 UBC.
SECTION 105 - BOARD OF APPEALS
See Section 105 of the 1997 UBC.
SECTION 106 - PERMITS
See Section 106 of the 1997 UBC.
106.1 Additional information for APECC Permits. Each application for a building
permit subject to this code shall contain at least two copies of the documents listed
below.
For ail new buildings and outdoor heating system equipment regulated by this code
the applicant shall file the appropriate plans. The plans and specifications shall
indicate the features and performance specifications needed to comply with this code,
and shall be approved by the Building Division by stamp and authorized signature.
Plans and specifications showing the characteristics of each feature, material,
component, and manufactured device regulated by Chapter 3. If any characteristic of
any such feature, material, component, or manufactured device is changed before the
final inspection, the change shall be submitted to the Building Division~
106.2 Responsibility for Signing. Each document described in Section 106.1 shall be
signed by the person responsible for its preparation. If more than one person has
responsibility for building design or construction, each person may prepare and sign
the document or documents applicable to that portion of the design or construction for
which the person was responsible; alternatively, the person with chief responsibility
for design or construction may prepare and sign the document for the entire design or
construction.
106.3 Issuance of APECC permits. No permits shall be issued for any construction
unless the Building Division determines that the construction is designed to comply
with the requirements of this code in effect on the date on which the permit
application was submitted~
If a building permit has expired and there has been no construction, the Building
Division shall not issue a new permit unless the Building Division determines in
writing that the construction is designed to comply with the requirements of this code
in effect on the date the new permit is applied for.
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SECTION 107 - FEES
The APECC review and compliance fee shall be 10% of the associated permit fee.
The minimum review and compliance fee for building permits shall be $20.00. Upon
written request of the applicant, refunds may be approved for up to 80% of the fee
paid for APECC or KEMP. No refund will be approved when requested more than
180 days after the Certificate of Occupancy or Letter of Completion is issued for the
permit. Any additional energy use regulated by this code and installed without
approval shall be charged double the applicable fee.
SECTION 108 - INSPECTIONS
See Section 108 of the 1997 UBC
108.1 Energy Conservation Code inspections. The Building Division shall inspect
new construction to determine whether it is consistent with approved plans and
specifications, and complies with this code. Certificates of Occupancy or Letter of
Completion shall not be issued until such consistency is verified.
SECTION 109 - CERTIFICATES OF OCCUPANCY
See Section 109 of the 1997 UBC ~
SECTION 110 - CALCULATION METHODS AND ALTERNATE COMPONENT
PACKAGES
110.1 Public Domain Computer Program. In addition to the present approved public
domain computer progrmns, the Chief Building Official may, upon written
application or his/her own motion, approve additional public domain computer
programs that may be used to demonstrate that the proposed building designs meet
the requirements of this code.
The Chief Building Official shall ensure that user's manuals Or guides for each
approved program are available.
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CHAPTER 2
DEFINITIONS AND ABBREVIATIONS
SECTION 201 - DEFINITIONS
201 General. For the purpose of this code certain terms, phrases, words, and their
derivatives shall be construed as specified in this chapter and elsewhere in this code
where specific definitions are provided. Terms, phrases, and words used in the singular
include the plural and the plural the singular. Terms, words, and phrases used in the
masculine gender include the feminine and the feminine the mas6uline.
Terms, phrases, and words not found in Chapter 2 shall be defined as in Chapter 2 of
the 1997 UBC. Where terms, phrases, and words are not defined in any of the
references above, they shall be defined as specified in Webster's Third New
International Dictionary of the English Language, Unabridged (1986 ed.), unless
context requires otherwise.
SECTION 202 - A
ACCESSIBLE is having access thereto, but which first may require removal or opening
of access panels, doors, or similar obstructions.
ADDITION is any change to a building that increases conditioned floor area and/or
conditioned volume.
ALTERATION is any change to a building's water heating system, space conditioning
system, or envelope that is not an addition.
ALTERNATIVE CALCULATION METHODS (ACMs) are the City of Aspen/Pitkin
County Energy Code Public Domain Computer Programs, one of the City of
Aspen/Pitkin County Energy Code Simplified Calculation Methods, or any other
calculation method approved by the Chief Building Official.
APPLIANCE EFFICIENCY REGULATIONS is NAECA.
APPROVED BY THE CHIEF BUILDING OFFICIAL means approval under Uniform
Building Code.
APPROVED CALCULATION METHOD (See ALTERNATIVE CALCULATION
METHODS).
SECTION 203 - B
BUILDING is any structure or space for which a permit is sought.
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BUILDING DIVISION means Aspen/Pitkin Community Development Department,
Building Division.
BUILDING ENVELOPE is the ensemble of exterior and demising partitions of a
building that enclose conditioned space.
SECTION 204 - C
CERTIFYING ORGANIZATION is an independent organization recognized by the
Chief Building Official to certify manufactured devices for performance values in
accordance with procedures adopted by the Chief Building Official.
CHIEF BUILDING OFFICIAL is the officer or other designated authority charged
with the administration and enforcement of this code, or the Building Official's duly
authorized representative.
CLIMATE ZONE is the geographic areas of Pitkin County for which the Aspen/Pitkin
Regional Building Division has jurisdiction.
COEFFICIENT OF PERFORMANCE (COP) - HEAT PUMP is the ratio of the rate of
heat delivered to the rate of energy input, in consistent units, for a complete heat pump
system under designed operating conditions.
COMPLIANCE APPROACH means any one of the allowable methods by which
design and construction of a building may be demonstrated to be in compliance with
Chapter 3.
CONDITIONED FLOOR AREA (CFA) is the floor area (in square feet) of enclosed
conditioned space on all floors of a building, as measured at the floor level of the
exterior surfaces of exterior walls enclosing the conditioned space.
CONDITIONED SPACE is space in a building that is either directly conditioned or
indirectly conditioned.
CONDITIONED VOLUME is the total volume (in cubic feet) of the conditioned space
within a building.
COVERED PRODUCT is an appliance regulated by the efficiency standards
established under the National Appliance Energy Conservation Act (NAECA), 42
U.S.C. Section 6291 of 1987.
CRAWL SPACE is an unfinished space immediately under the first floor of a building
adjacent to grade less than 5'6" in height.
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SECTION 205 - D
DECORATIVE GAS APPLIANCE is a gas appliance that is designed or installed for
visual effect only, cannot burn solid wood, and simulates a fire in a fireplace.
DEGREE DAY, HEATING is a unit, based upon temperature difference and time, used
in estimating fuel consumption and specifying nominal annual heating load of a
building. For any one day, when the mean temperature is less than 65°F, there exist, as
many degree days as there are Fahrenheit degrees difference in temperature between
the mean temperature for the day and 65°F. The number of degree days for use with
this code is 8,850.
DEMISING PARTITIONS AND WALLS are barriers that separate conditioned space
from enclosed unconditioned space.
DESIGN CONDITIONS are the parameters and conditions used to determine the
performance requirements of space conditioning systems. Design conditions for
determining design heating and cooling loads are specified in Section 305.1.7.2.
DESIGN HEAT LOSS RATE is the total calculated heat loss through the building
envelope under design conditions.
SECTION 206 - E
EFFICIENT BUILDING PROGRAM is the program adopted by the City of Aspen and
Pitkin County regulating design, landscape, materials and equipment.
ENCLOSED SPACE is space that is substantially surrounded by solid surfaces.
ENERGY BUDGET is the maximum amount of source energy that a proposed
building, or portion of a building, can be designed to consume, calculated with the
approved procedures specified in Chapter 3~
ENERGY CONSERVATION STANDARDS means City of Aspen/Pitkin County
Energy Conservation Code, Chapter 3.
ENERGY OBTAINED FROM DEPLETABLE SOURCES is electricity purchased
from a public utility, or any energy obtained from coal, oil, natural gas, or liquefied
petroleum gases.
ENERGY OBTAINED FROM NONDEPLETABLE SOURCES is energy that is not
energy obtained from depletable sources.
ENFORCING AGENCY is the City of Aspen and Pitkin County Community
Development Departments, Building Divisions.
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ENTIRE BUILDING is the ensemble of all enclosed space in a building, including the
space for which a permit is sought, plus all existing conditioned and unconditioned
space within the structure.
ENVELOPE means building envelope
ERHC E-STARTM is a program provided through Energy Rated Homes of Colorado
which rates the energy efficiency ora structure.
EXFILTRATION is uncontrolled outward air leakage from inside a building, including
leakage through cracks and interstices, around windows and doors, and through any
other exterior partition or duct penetration.
EXISTING BUILDING is a building constructed prior to the adoption of the
AsperffPitkin Energy Conservation Code dated February 12, 1996.
EXPOSED THERMAL MASS is mass that is directly exposed (uncovered) to the
conditioned space of the building.
EXTERIOR FLOOR/SOFFIT is a horizontal exterior partition, or a horizontal
demising partition, under conditioned space. For residential occupancies, exterior floors
also include those on grade.
EXTERIOR PARTITION is an opaque, translucent, or transparent solid barrier that
separates conditioned space from ambient air or space that is not enclosed. For low-rise
residential occupancies, exterior partitions also include barriers that separate
conditioned space from unconditioned space, or the ground.
EXTERIOR ROOF/CEILING is an exterior partition, or a demising partition, that has a
slope less than 60 degrees from horizontal, that has conditioned space below, and that is
not an exterior door or skylight.
EXTERIOR ROOF/CEILING AREA is the area of the exterior surface of exterior
roof/ceilings.
EXTERIOR WALL is any wall or element of a wall, or any member or group of
members, which defines the exterior boundaries or courts of a building and which has a
slope of 60 degrees or greater with the horizontal plane. An exterior wall or partition is
not an exterior floor/soffit, exterior door, exterior roof/ceiling, window, skylight, or
demising wall.
EXTERIOR WALL AREA is the area of the opaque exterior surface of exterior walls.
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SECTION 207 - F
FENESTRATION PRODUCT is any transparent or translucent material plus any sash,
frame, mullions~ and dividers, in the envelope of a building, including, but not limited
to: windows, sliding glass doors~ french doors, skylights, curtain walls, and garden
windows.
FIREPLACE is a hearth and fire chamber or similar prepared place in which a solid
fuel fire may be burned, as defined in UBC Section 3!02.2 and as further clarified in
UBC Section 3102.7; these include but are not limited to factory-built fireplaces,
masonry fireplaces, and masonry heaters (solid fuel burning device).
SECTION 208 - G
GAS HEATING SYSTEM is a natural gas or liquefied petroleum gas heating system.
GAS LOG is a self-contained, freestanding, open-flame, gas-burning appliance
consisting of a metal frame or base supporting simulated logs, and designed for
installation only in a vented approved for burning wood devise.
GLAZING (See FENESTRATION PRODUCT).
GROSS EXTERIOR ROOF AREA is the sum of the skylight area and the exterior
roof/ceiling area.
GROSS EXTERIOR WALL AREA is the sum of the window area, door area, and
exterior wall area.
GROUND SOURCE HEAT PUMP is a refrigeration system that extracts heat from
one substance and transfers it to another in the same system for a beneficial purpose.
SECTION 209 - H
HABITABLE STORY is a story that contains space in which humans may work or live
in reasonable comfort, and that has at least 50 percent of its volume above grade.
HISTORIC BUILDING is a building or structure that has been designated by official
action of the legally constituted authority of this jurisdiction as having special historic
or architectural significance.
SECTION 210 - I
INDIRECTLY CONDITIONED SPACE is enclosed space that is not directly
conditioned.
INFILTRATION is uncontrolled inward air leakage from outside a building, or
unconditioned space, including leakage through cracks and interstices, around windows
and doors, and through any other exterior or demising partition or pipe or duct
penetration.
SECTION 213 - L
LPG is Liquefied Petroleum Gas.
SECTION 214 - M
MANUFACTURED DEVICE is any heating, cooling, ventilation, water heating,
refrigeration, cooking, plumbing fitting, insulation, door, fenestration product, or any
other appliance, device, equipment, or system subject to this code.
MECHANICAL HEATING is raising the temperature within a space for the purpose of
maintaining human comfort using electric resistance heaters, fossil fuel burners, heat
pumps, or other systems that require energy from depletable sources.
MODELING ASSUMPTIONS are the conditions (such as weather conditions,
thermostat settings and schedules, internal gain schedules, etc.) that are used for
calculating a building's annual energy consumption and that are in the Alternative
Calculation Methods Manuals.
MODEL ENERGY CODE is the current document of the same name developed and
supported by the U.S. Department of Energy.
SECTION 215 - N
NAECA is the National Appliance Energy Conservation Act of 1987 (Public Law 100-
12).
NATIONAL FENESTRATION RATING COUNCIL is th.e NFRC, certified products
directory, published by NFRC, incorporated, 1300 Spring Street, Suite 120, Silver
Spring, Maryland, 20910.
NONRESIDENTIAL BUILDING is any building that is not a residential building.
NON-VENTED ROOF/CEILING ASSEMBLY as referenced in this code is an
assembly that complies with the policy adopted by the Building Division for the control
of moisture in the interior insulation of the roof and has been approved by the building
official
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SECTION 216 - O
OPERABLE SHADING DEVICE is a device at the interior or exterior ora building or
integral with a fenestration product, which is capable of being operated, either manually
or automatically, to adjust the amount of solar radiation admitted to the interior of the
building.
OPTIMAL OVERHANG is an overhang that completely shades the glazing at solar noon on
August 21 and substantially exposes the glass at solar noon on December 21.
SECTION 219 - R
RADIANT SLAB is in floor hydronic heat installed in a solid thermal mass.
RAISED FLOOR is a floor (partition) over a crawl space, or an unconditioned space,
or ambient air.
READILY ACCESSIBLE is capable of being reached quickly for operation, repair, or
inspection, without requiring climbing or removing obstacles, or resorting to access
equipment.
RELATIVE SOLAR HEAT GAIN is the ratio of solar heat gain through a fenestration
product (corrected for external shading) to the solar heat gain from an unshaded single
light of 1/8 inch thick clear double strength glass under the same set of conditions,
excluding the effects of mullions, frames and sashes.
RENEWABLE ENERGY MITIGATION PROGRAM is designed to offset the
environmental impacts and greenhouse gas emissions produced by non-complying
exterior snowmelt, pool, and spa systems and by homes exceeding 5,000 square feet.
Fees collected by the program will be used to fund energy efficiency and renewable
energy installations in the City of Aspen and Pitkin County and, if necessary, purchase
wind energy from wind generators in Colorado or Wyoming. It Will be administered by
the Board of Directors of the Community Office for Resource Efficiency (CORE).
REPAIR is the reconstruction or renewal of any part of an existing building for the
purpose of its maintenance.
REPAIR OR REPLACEMENT GLAZEXlG is glazing without a frame, associated
with a repair that is not an addition or alteration.
RES CHECK is the current version of a prescriptive compliance method that was
developed by the U.S. Department of Energy.
RESIDENTIAL BUILDING is a one or two family dwelling or a town home not more
than three stories.
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SECTION 220 - S
SERVICE SNOWMELT HEATER is an appliance designed to heat a liquid for the
purpose of melting ice and snow.
SERVICE WATER HEATER is an appliance designed primarily to supply hot water
for sanitary purposes for human occupancy, other than for comfort heating.
SERVICE WATER HEATING is heating of water for sanitary purposes for human
occupancy, other than for comfort heating.
SHADING COEFFICIENT (SC) is the ratio of the solar heat gain through a
fenestration product to the solar heat gain through an unshaded 1/8 inch thick clear
double strength glass under the same set of conditions. For nonresidential, high-rise
residential, and hotel/motel buildings, this shall exclude the effects of mullions, frames,
sashes, and interior and exterior shading devices.
SITE BUILT WINDOWS are those products which are field constructed from
elements, including framing, glazing, and weather-stripping, not sold together as a
fenestration product.
SITE SOLAR ENERGY is natural daylighting, or thermal, chemical, or electrical
energy derived from direct conversion of incident solar radiation at the building site.
SKYLIGHT is glazing having a slope less than 60 degrees from the horizontal with
conditioned space below.
SKYLIGHT AREA is the area of the surface of a skylight, plus the area of the frame,
sash, and mullions.
SNOWMELT is the mechanical melting of snow on driveways, walkways, etc.
SOLID FUEL BURNING DEVICE shall mean a burning device designed for solid fuel
combustion so that usable heat is derived for the interior of a building, and includes,
without limitation, solid fuel-fired stoves, wood stoves or any nature, fireplaces, pellet
stoves, solid fuel-fired cooking stoves, combination fuel furnaces or boilers which burn
solid fuel, or any other device used for the burning of solid combustible material. Solid
fuel burning devices do not include gas log fireplaces, decorative gas appliances or
electrical appliances.
SOURCE ENERGY is the energy that is used at a site and consumed in producing and
in delivering energy to a site, including, but not limited to, power generation,
transmission, and distribution losses, and that is used to perform a specific function,
such as space conditioning, lighting or water heating. Table 3-1 contains the conversion
factors for converting site to source energy.
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SPA is a unit primarily designed for therapeutic use which is not drained, cleaned or
refilled for each individual. It may include, but not limited to, hydrojet circulation, hot
water, cold water, mineral baths, air induction bubbles, or any combination thereof
Industry terminology for spa includes, but is not limited to, therapeutic pool,
hydrotherapy pool, whirlpool, hot spa, etc.
SPA POOL-PRIVATE is a pool, not under medical supervision, that incorporates water
jets and/or an aeration system used for hydro massage in connection with a single
family residence, and available only to family of the householder and his private guests.
SPA POOL~PUBLIC is a pool, not under medical supervision, that incorporates water
jets and/or an aeration system used for hydro massage.
SPACE CONDITIONING SYSTEM is a system that provides either collectively or
individually heating, ventilating, or cooling within or associated with conditioned
spaces in a building.
SWIMMING POOL is any constructed or prefabricated pool used for swimming or
bathing, twenty-four (24) inches or more in depth.
SWIMMING POOL-PRIVATE is all constructed pools which are used as a swimming
pool in connection with a single family residence, and available only to family of the
householder and his private guests.
SWIMMING POOL-PUBLIC is any constructed pool other than a private swimming
pool.
SYSTEM is a combination of equipment, controls, accessories, interconnecting means,
or terminal elements, by which energy is transformed to perform a specific function,
such as space conditioning, or service water heating.
SECTION 221 - T
THERMAL MASS is solid or liquid material used to store heat for later heating use or
for reducing cooling requirements.
THERMAL RESISTANCE ~R) is the resistance of a material or building component to
the passage of heat in (hr x ftx °F)/Btu.
SECTION 222 - U
UBC is the 1997 edition of the Uniform Building Code.
UMC is the 1997 edition of the Uniform Mechanical Code.
UNCONDITIONED SPACE is enclosed space within a building that is not conditioned
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space.
U-VALUE is the overall coefficient of thermal transmittance of a construction
assembly, in Btu/(hr x ft2 x °F), including air film resistance at bOth surfaces.
SECTION 223 - V
VAPOR. RETARDER is a material that has a permeance of one perm or less and that
provides resistance to the transmission of water vapor.
SECTION 224 - W
WATER, STORAGE TANK is an unfired or indirectly heated water tank used for
storage of hot water.
WINDOW is glazing that is not a skylight.
WINDOW AREA is the area of the surface of a window, plus the area of the frame,
sash, and mullions.
WINDOW WALL RATIO is the ratio of the window area to the gross exterior wall
area.
WOOD HEATER is an enclosed wood burning appliance used for space heating and/or
domestic water heating, and which meets the requirements of the City of Aspen or
Pitkin County Environmental Health Departments~
WOOD STOVE (See WOOD HEATER).
SECTION 227 - Z
ZONE, SPACE CONDITIONING is a space or group of spaces within a building with
sufficiently similar comfort conditioning requirements so that comfort conditions can
be maintained throughout the zone by a single controlling device.
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CHAPTER 3
ENERGY CONSERVATION STANDARDS
SECTION 301 - ALL OCCUPANCIES - GENERAL PROVISIONS
301.1 Buildings covered. The provisions of Chapter 3 apply to all buildings (see
Section 101.3) and to all snowmelt, swimming pool and spa heating system
equipment.
301.2 Parts of Buildings Covered. The provisions of Chapter 3 apply to the building
envelope, space conditioning systems, water heating systems, snowmelt systems, and
private pool and spa heating systems of buildings covered by this code.
EXCEPTIONS:
1. Packaged portable spas =< 64sq. ft. of surface water area listed by a nationally
recognized testing laboratory with a minimum R12 cover.
2. Areas critical to pedestrian ingress, egress, or life safety may be snowmelted,
with approval from the Chief Building Offidal, on a case by case basis.
301.3 Floors and ltabitable Stories.
1.Oniy habitable floors that have at least 50 percent of their volume above grade as
defined in the UBC shall be counted in determining how many habitable stories a
building has.
2.All conditioned space in a floor shall comply with this code, whether or not the
floor is above grade and whether or not it is habitable.
301.4 Mixed Occupancy. When a building is designed and constructed for more than
one type of occupancy, the space for each occupancy shall meet the provisions of this
code applicable to that occupancy.
EXCEPTION: If one occupancy constitutes at least 90 percent of the conditioned
floor area of the building, the entire building may comply with the provisions of
this code applicable to that occupancy:
301.5 Certification Requirements for Manufactured Devices, This code limits the
installation of the following manufactured devices to those that have been certified by
their manufacturer to meet or exceed minimum specifications or efficiencies adopted
by the Chief Building Official:
1. Central air-conditioning heat pumps and other central air conditioners.
2. Combination equipment: space heating and cooling, or space heating and water
heating.
3. Fenestration products.
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4. Gas space heaters.
5. Insulating materials.
6. Oil fired storage water heaters.
7. Other heating and cooling equipment.
8. Plumbing fixtures.
9. Pool heaters.
I0. Refrigerators, refrigerator-freezers, and freezers.
11. Room air conditioners.
12. Slab floor perimeter insulation.
13. Snowmelt Boilers.
14. Solid fuel burning devices.
15. Water heaters.
16. Ground Source Heat Pumps
301.5.1 The certification status of any such manufactured device may be confirmed
only by reference to:
1. A directory published or approved by the Chief Building Official; or
2. A copy of the application for certification from the manufacturer and the letter
of acceptance from the Building Division staff~ or
3. Written confirmation from the publisher of a division-approved directory that a
device has been certified; or
4. A division-approved label on the device; or
5. The National Appliance Energy Conservation Act of 1987.
6. The National Fenestration Rating Council.
NOTE: Section 301.5 does not require a builder, designer, owner, operator,
or enforcing agency to test any certified device to determine its compliance
with minimum specifications or efficiencies adopted by the Chief Building
Official.
SECTION 302 - CALCULATION OF SOURCE ENERGY CONSUMPTION.
When calculating source energy consumption, consumption of electricity, natural gas,
fuel oil, and LPG shall be converted to BTUs at the rates shown in Table 3-1.
Table 3-1
Source Energy Conversion Rates
Energy Source BTU per unit Consumption
Electricity 10,239 BTU/kilowatt-hour
Natural Gas 100,000 BTU/therm/100 at 14.73 psia
Fuel Oil 138,400 BTU/gallon
LPG 91,080 BTU/gallon
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SECTION 303 - MANDATORY REQUIREMENTS FOR SERVICE SNOWMELT
SYSTEM AND EQUIPMENT.
303.1 Any service snowmelt system or equipment shall meet the following:
1. Pilot light prohibited.
2. R-10 insulation or equivalent P-10 concrete barrier foil shall be installed under
the area to be snowmelted
3. No idling of heating equipment allowed.
4. Electric resistance heating is prohibited.
5. Controls installed for shutting off the snowmelt system (when temperature is
above freezing or moisture is not present) by using an automatic
temperature and surface moisture sensor.
6. Snowmelt areas to be shown on site-plan,
7. Energy calculations shall include snowmelt energy use as per Section 311.
EXCEPTIONS:
1. Roof'Heating Cable.
2. Areas critical to pedestrian ingress, egress, or life safety may be
snowmelted, with approval from the Chief Building Official, on a case-by-
case basis.
SECTION 304 - MANDATORY REQUIREMENTS FOR SOLID FUEL
BURNING DEVICES.
304.1 Certification. Any solid fuel burning device may be installed only if the
manufacturer has certified that the device complies with all of the applicable
requirements of this section and has been determined by the AsperffPitkin
Environmental Health Department to have emissions less than or equal to 4.1 ~
when tested according to the most stringent test methods for certifying airtight wood
stoves or pellet stoves.
SECTION 305 - RESIDENTIAL MANDATORY FEATURES AND DEVICES
Any new residential building shall meet the requirements of this Section.
305.1 Ceilings. The opaque portions of ceilings separating conditioned spaces from
unconditioned spaces or ambient air shall meet the requirements of either 1 or 2
below:
1.Ceilings shall be insulated between wood framing members with insulation
resulting in an installed thermal resistance of R-30 or greater for the insulation
alone.
- 3.3 - 2003 APECC
ALTERNATIVE: Insulation which is not penetrated by framing
members may meet an R-value equivalent to installing R-30 insulation
between wood framing members and accounting for the thermal effects of
framing members.
2.The weighted average U-value of ceilings shall not exceed the U-value that
would result from installing R-30 insulation between wood framing members in
the entire ceiling and accounting for the effects of framing members.
When loose fill insulation is installed, the minimum installed weight per square
foot shall conform with the insulation manufacturer's installed design weight per
square foot at the manufacturer's labeled R-value.
305.2 Walls. The opaque portions of frame walls separating conditioned spaces from
unconditioned spaces or ambient air shall meet the requirements of either 1 or 2
below:
1. Framed walls shall be insulated between framing members with insulation
having a thermal resistance of R-19. Framed foundation walls of heated
basements or heated crawl spaces shall be insulated above the adjacent outside
ground line with insulation having a thermal resiStance of at least R-19.
ALTERNATIVE: Insulation which is not penetrated by framing members
may meet an R-value equivalent tO installing R-19 insulation between wood
framing members and accounting for the thermal effeCts of framing members.
2. The weighted average U-value of walls shall not exceed the U-value that would
result from installing R-19 insulation between wood framing members and
accounting for the effects of framing members.
305.3 Floors. Concrete raised floors over unconditioned space shall be insulated to an
installed thermal resistance of at least R-19. All other raised floors separating
conditioned space from unconditioned space shall meet the requirements of either 1
or 2 below:
1. Floors shall be insulated between wood framing members with insulation
having an installed thermal resistance ofR' 19 or greater. '
2. The weighted average U-value of other floor assemblies shall not exceed the U-
value that would result from installing R-19 insulation between wood framing
members and accounting for the effects of framing members.
ALTERNATIVE: Raised floor insulation maY be omitted if the
foundation walls are inSulated to an installed thermal resistance of R-19,
and a vapor barrier is placed over the entire floOr of the crawl space, and a
- 3.4 - 2003 APECC
mechanical ventilation system that meets the requirements of UBC Section
2317.7 is installed.
305.4 Installation of Fireplaces, Decorative Gas Appliances, and Gas Logs.
305.4.1 Wood burning fireplaces are prohibited in non-attainment areas of the City of
Aspen and Pitkin County.
305.4.2 If a masonry or factory built wood burning fireplace is installed, it shall have
the following:
1. CLOSEABLE metal or glass doors covering the entire opening of the firebOx;
2. A combustion air intake to draw air from the outside of the building directly
into the fire box, which is at least 6-square inches in area; and
3. A flue damper with a readily accessible control.
EXCEPTION: When a gas log, log lighter, or decorative gas appliance is
installed in a fireplace, the flue damper shall be blocked open as required by
the manufacturer's installation instructions or Section 803 1997 UMC.
305.4.3 If a gas log or gas insert is installed in an existing masonry fireplace, it shall
have the following:
1. CLOSEABLE metal or glass dOors covering the entire opening of the firebox or
approved mechanical damper.
2. Flue damper permanently block open per 1997 UMC Section 901.2
3. A combustion air intake to draw air from the outside of the building directly
into the firebOx, which is at least 6-square inches in area
305.5. Infiltration Barrier. If an infiltration barrier is installed to meet the
requirements of Sections 306 and 307, it must have an air POroSity of less than 5
cubic feet per hour per square foot per inch of mercury pressure difference when
tested in accordance with the requirements of ASTM E,283284. If a vapor barrier
functions as an infiltration barrier it shall be located on the conditioned side of the
exterior framing.
305.6 Vapor Retarders. A vapor retarder with 1 Perm or less Shall be installed on the
conditioned space side of all insulation in all exterior walls and ceilings to protect
insulation from condensation. Penetrations of vapor barriers shall be sealed at the edge
of the penetration. Recessed lightS that penetrate vapor barriers Shall be "airtight".
EXCEPTIONS: Vapor retarders shall not be installed:
1. On approved non-vented insulated roof-ceiling assemblies. See Section 215.
2. On below grade walls
- 3.5 - 2003 APECC
305.7 Space Conditioning Equipment.
305.7.1 Building design heat loss rate and design heat gain rate, shall be determined
using a method based on any one of the following:
1. The American Society of' Heating, Refrigeration, and Air-conditioning
Engineers (ASHRAE) Handbook and Product Directory, Equipment Volume
(1998)~ Systems and Applications Volume (1987)~ and Fundamentals Volume
(1989), or
2. The Sheet Metal Air Conditioning Contractors National Association
(SMACNA) Load Calculation Manual, or
3. The Air Conditioning Contractors of America (ACCA) Manual J.
The design heat loss rate and design heat gain rate, are two of the criteria that shall be
used for equipment sizing and selection.
NOTE: Heating Systems must meet the minimum heating capacity required by
currently adopted building code.
305.7.2 Design Conditions. For the purpose of sizing the space conditioning
(HVAC) system, the indoor design temperatures shall be 68°F for heating and 78~F
for cooling. The outdoor heating design temperature shall be 15~F. The outdoor
cooling design dry bulb temperature shall be 81~F. The outdoor cooling design wet
bulb temperature shall be 59'F.
305.7.3 Source Energy Considerations. Electric resistance heating is not permitted
in new construction, since the efficiency is approximately 35% based on source
energy. Additions of 2,000 square feet or less with existing resistance heating systems
may continue to utilize electric heat in the addition. Additions over 2,000 square feet
may not utilize electric resistance heat. The Building Official will consider special
uses for approval,
305.8 Setback Thermostats. All heating and/or cooling systems other than solid fuel
burning devices shall have an automatic thermostat with a clock mechanism or other
setback mechanism approved by the Chief Building Official that shuts the system off
during periods of non-use and that allows the building occupant to automatically set
back the thermostat set points for at least 2 periods within 24 hours.
EXCEPTION: h-floor hydronic heating contained in thermal mass need not comply
with this requirement.
305.9 Pipe and Tank Systems.
305.9.1 Hot water tanks shall be externally wrapped with insulation having an
installed thermal resistance orR-12 or greater or have internal insulation of at least R-
16 and a label on the exterior of the tank showing the insulation R-value.
- 3.6 - 2003 APECC
305.9.2 The piping for all space conditioning and service water heating systems, in
unconditioned spaces; and, the first five feet of hot and cold water pipes from the
storage tanks of non-recirculating systems shall be insulated in accordance with Table
3-2.
Table 3-2
Pipe Insulation Requirements
Minimum R-Value
System Pipe Diameter
Less than or Greater than 2"
equal to 2"
Domestic Hot Water R-4 R-6
Hydronic Heating Supply Lines R-4 R-6
Cooling Systems (pipes below 55°F) R-3 R-4
EXCEPTIONS: The following piping does not have to be thermally insulated:
1. Factory-installed piping within space conditioning equipment
2. Piping that conveys fluids that have a design operating temperature range
between 55°F and 105°F.
3. Gas piping, cold domestic water piping, condensate drains, vents, or waste
piping.
4. Where the heat gain or heat loss to or from piping without insulation will not
increase building source energy use.
NOTE: Where the Chief Building Official approves a water heater
calculation method for a particular water heating recirculation system,
piping insulation requirements shall be those specified in the approved
calCulation method.
305.10 Slab Edge Insulation. Concrete slab edges shall be insulated to an installed
thermal resistance of at least R-10. Material used for slab edge insulation shall meet
the following minimum specifications:
1. Water absorption rate no greater than 0.3 percent when tested in accordance
with ASTM-C-271.
2. Water vapor permeance no greater than 2~0 perm/inch when tested in
accordance with ASTM-E-96-90.
3. Concrete slab perimeter insulation must be protected from physical damage and
ultra violet light deterioration.
- 3.7 - 2003 APECC
SECTION 305.11 Ducts and Fans.
305.11.1 Air handling duct systems shall be installed and sealed with mastic to meet
the requirement o£UMC Sections 604~ Portions conveying conditioned air shall either
be insulated to a minimum installed level of R-4~2 (or any l~gher level required by
UMC Section 604) or be enclosed entirely in conditioned space. Zone III shall be
used for the purpose of this Se~ion, unless another Zone is approved by the Chief
Building Official.
305.11.2 All duct insulation product P-values shall be based on insulation only
(excluding air films, vapor bax~iers, or other duct componems) and tested C-values at
75~ mean temperature at the installed thickness, in accordance with ASTM C518-85
or ASTMCI77-85.
305.11.3 The installed thickness of duct insulation used to determine its P-value shall
be determined as follows:
1. For duct board, duct liner and factory-made rigid ducts not normally subjected
to compression, the nominal insulation thickness shall be used.
2. For duct wrap, installed thickness shall be assumed to be 75 percent (25 percent
compression) of nominal thickness.
3. For factory-made flexible air ducts, the installed thickness shall be determined
by dividing the difference between the actual outside diameter and nominal inside
diameter by 2.
305.11.4 Insulated flexible duct products installed to meet this requirement must
include labels, in maximum intervals of 10 feet, showing the thermal performance R-
value for the duct insulation itself (excluding air films, vapor barriers, or other duct
components), based on the tests in Section 305.11.2 and the installed thickness
determined by Section 305.11.3.3.
305.11.5 All fan systems, regardless of volumetric capacity, that exhaust air from the
building to the outside shall be provided with backdraft or automatic dampers to
prevent air leakage.
305.11.6 All gravity ventilating systems that serve conditioned space shall be
provided with either automatic or readily accessible, manually operated dampers in
all openings to the outside except combustion inlet and outlet air openings and
elevator shaft vents.
EXCEPTION: The requirements do not apply to ducts and fans integral to
combustion air ducts of solid thel burning devices or fireplaces.
- 3.8 - 2003 APECC
SECTION 305.12 - Mandatory Requirements for Outside Private Pool and Spa
Heating Systems and Equipment.
305.12.1 Certification by Manufacturers. Any pool or spa heating system or
equipment may be installed only if the manufacturer has certified that the system or
equipment has all of the following:
1. A readily accessible on-off switch, mounted on the outside of the heater, that
allows shutting off the heater without adjusting the thermostat setting; and
2. No electric resistance heating; and
EXCEPTIONS:
1. Listed package units with fully insulated enclosures, and with tight-
fitting covers that are insulated to at least R-12 up to a maximum size of
64 square feet.
3. No pilot light; and
4. High efficiency circulation pump motors; and
5. For summer pools, maximum capacity of heating system shall be no more than
405,000 BTU input.
305.12.2 Installation. Any pool or spa heating system or equipment shall be installed
with all of the following:
1. At least 36" of pipe between the filter and the heater, to allow for the future
addition of solar heating equipment; and
2. Directional inlets and time switches for pools.
2.1 The pool shall have directional inlets that adequately mix the pool water;
and
2.2 The circulation pump shall have a time switch that allows the pump to be
set to mn in the off-peak eleCtric demand period, and for the minimum
time necessary to maintain the water in the condition required by
applicable public health standards.
EXCEPTION: Where applicable public health standards require on-peak
operation.
3. Outdoor pools or spas with a surface area > 800 ft2. shall not be heated.
EXCEPTION: Pools with heating systems deriving 50% of energy from
non-depletable sources as per SeCtion 311.4 or through REMP fees as per
Section 311, with a maximum area up to 1600 fi2.
- 3.9 - 2003 APECC
SECTION 305.13 - Natural and Liquid Propane Gas Central Furnaces, Cooking
Equipment, Private Pool and Spa Heaters and SnOWmelt:
305.13.1 Pilot Lights Prohibited. Any natural or liquid propane gas system or
equipment shall not have a continuously burning pilot light:
EXCEPTION: Listed decorative gas appliances
SECTION 305.14 - Mandatory Requirements for Exterior Doors, Windows, and
Fenestration Products. ~
305.14.1 Any manufactured doors or windows or manufactured fenestration product
may be installed only if the manufacturer has certified to the Chief Building Official,
or if an independent certifying organization approved by the Chief Building Official
has certified, that the product complies with all of the aPPlicable requirements of this
subsection.
305.14.1.1 Manufactured doors and windows shall have air infiltration rates not
exceeding those shown in Table 3-3, when tested according tO ASTM E283-91 at a
pressure differential of 75 pascals or 1.57 pounds/ft2.
305.14.1.2 Manufactured fenestration products shall:
I. Be certified as to their overall U-values as rated in accordance with the
National Fenestration Rating Council's NFRC-100~91 (June 28,1991), or in
accordance with "Table 5, Overall Coefficients of Heat Transmission of
Various Fenestration Products", as it appears on pages 27.6 and 27.7 of the
ASHRAE 1993 Fundamentals Handbook, or in accordance with a default
table method approved by the Chief Building Official; and
2. Have a temporary label, not to be removed before inspection by the
enforcement agency, listing the certified U-values; and
3. Have a permanent label listing the U-value, certifying organization, and rating
procedures or a label to allow tracking back to the original certification
information on file with the certifying organization.
- 3.10 - 2003 APECC
Table 3-3
MAXIMUM AIR INFILTRATION RATES
TYPE RATE
Windows
C frrdl~2 of operable sash crack
All 0.37
Residential Doors swinging, sliding 0.37
C fm/~2 ofdoor area
All Other Doors sliding, swinging (single door) 0.37
cFm/R2 of door area
swinging (double door) 1.0
305.14.2 Site constructed doors, skylights, and windows, including, but not limited to,
field manufactured doors~ skylights, and windows, shall be caulked between the door,
skylights, or window and the building, and shall be weather-stri~ped
EXCEPTION: Unframed glass doors and fire doors.
SECTION 305.15 - Mandatory Requirements for Joints and Other Openings. Joints
and other openings in the building envelope that are potential sources of air leakage shall
be caulked, gasketed, weather-stripped, or otherwise sealed to limit infiltration and
exfiltration.
SECTION 305.16 - Mandatory Requirements for Ground SourCe Heat Pump
Installations. All Ground Source Heat Pump installations ( closed water source loop
designs or closed ground loop designs) must meet the following requirements:
305.16.1 Coefficient of Performance of the system must be at least 3 as per
American Research Institute standard performance method (AR/330) or ISO
13256-1 (for hydronic systems use an output temperature of 115 degrees F) or
equivalent procedure. Ground source heat pump installations must be designed
and installed without an electric resistance heat system. Ground source systems
used for exterior energy uses (Section 31 I) muSt be integrated into the building's
energy system. Peak loads for interior space conditioning can be met with a
propane or natural gas boiler/furnace (minimum efficiency 85%).
305.16.2 Ground loop mechanical system must be installed by a certified
IGSHPA (International Ground Source Heat Pump Association) contractor.
Commissioning of equipment shall be conducted to flush the piping of
- 3.11 - 2003 APECC
contaminants and verify the system is absorbing (heating) or rejecting (cooling)
energy at the conditions tested against manufacturer's performance tables.
305.16.3 Ground loop system must be designed by a CGD (Certified
GeoExchange Designer by Association of EnergY EngineerS) or licensed
professional engineer with IGSHPA certification. DoCUmenthtion for system
design shall include:
installer and designer certifications,
heat load calculations,
· loop design performed with industry recognized packaged
soft;ware,
· header design configuration to minimize pressure drop through
loops,
· and specified minimum and maximum entering water temperature
with verification that specified equipment can operate with this
range of entering water temperature,
· loop configuration must be sited and sized properly on site plan.
305.16.4 Ground loops, either horizontally installed or vertically drilled must be
permitted by the Division of Water Resoumes. Ground loops must be drilled by a
licensed water well construction contractor or installed by a contractor certified
by the State Engineer. Reference for Geothermal (Ground Source) Installation
Rules -2CCR 402-10 in the records section of DWR. Piping for ground loops
and grout shall meet approved standards and spechqcations oflGSHP.
305.16.5 Open loop ground source heat pumps are not permitted.
SECTION 305.17- Compliance Methods. All residential buildings shall meet all of the
following:
1. The mandatory requirements.
2. Either the performance standards or the prescriptive standards:
SECTION 306 - RESIDENTIAL PRESCRIPTIVE COMPLIANCE
306.1 Buildings that are certified to receive an E-STARTM rating of at least 80 points
are exempt from meeting the prescriptive requirements.
EXCEPTION: Buildings that contain snowmelt, pool, or spa systems.
306.2 Buildings comply with the prescriptive or tradeoff standards if they meet the
requirements of RES CHECK, version 2.07. Chapter 2 of RES CHECK is omitted and
replaced by the mandatory requirements of Section 305.
306.3 The prescriptive standards do not allow the inclusion of snowmelt. (Snowmelt
requires compliance demonstration with the performance computerstendard.)
- 3.12 ~ 2003 APECC
306.4 The prescriptive standards do not allow the inclusion of pool and spa energy
use. (Pool and spas require compliance demonstration with the performance computer
standard).
306.5 Heat transfers within the same building to adjacent spaces that are not covered
by the permit and that are independently provided with space conditioning may be
considered to be zero. Heat transfers to spaces not yet provided with space
conditioning may be modeled as separate unconditioned zones, or as outside
conditions.
SECTION 307 - RESIDENTIAL PERFO~ANCE COMPLIANCE
307.1 Performance Standards. A building complies with the performance standard if its
combined calculated deplctable energy use for water hcafmg (Section 307.1.1), space
conditioning (Section 307.1.2), snowmelt (Section 307.1.3), and pool and spa healing
(Section 307.1.4), is less than or equal to the combined max'tmttm allowable energy use for
both water healing, and space conditioning, even if the building fails to meet either the water
heating, or space conditioning, budget alone.
EXCEPTION: Buildings that are certified to meet the requirements of the E-
STARTM Program with a rating of at least 86 points and do not have snowmelt,
swimming pool or spa heating system equipment comply with the performance
standard and are eligible for 100% rebate of the energy permit fees.
307.1.1 Water tleating Budgets. The budgets for water heating systems are those
calculated from Equation 3-11
Equation 3-1
ANNUAL WATER HEATING BUDGET (AWB):
For dwelling units less than 2500 ft2:
AWB (kBtu/yr.-f~2) = (14000) + 4.85 CFA
For dwelling units equal to or greater than 2500
AWB (kBtu/yr.-ff2) = (26125) CFA
Where CFA = the building's conditioned floor area in square feet.
The annual water heating budget calculated from Equation 3-1 may be met by either:
1. Calculating the energy consumption of the proposed water heating system using an
approved calculation method or
- 3.13 - 2003 APECC
2. Installing any gas storage type non-re-circulating water heating system that does
not exceed 50 gallons of capacity, meets the minimum standards specified in the
Appliance Efficiency Standards, and either has an R-12 external insulation wrap or
has been determined by the Chief Building Official to meet the annual water heating
budget calculated from Equation 3-1 without an external insulation wrap.
307.1.2 Space Conditioning Budget. Space conditioning budgets shall be the
calculated consumption of energy from depletable sources required for space
conditioning in buildings in which the requirements for the prescriptive compliance
(Section 306) are installed. To determine the space-conditioning budget, use an
approved calculation method.
307.1.3 Snowmelt Energy Use (not a budget). Snowmelt energy use shall be the
consumption of snowmelt system and equipment energy from depletable sources used
for melting snow. Snowmelt energy use for dwelling units is 34.425BTU/yr/sq.ft. at
100% equipment efficiency. Snowmell energy use shall be adjusted for efficiency of
the boiler and shall be added to the subtotal source energy consumption calculated as
per the requirements of Section 307.2.2.2. In the case of Ground Source Heat Pump the
efficiency of the system is 100 % as source energy.
EXCEPTIONS:
1. Roof heating cable.
2. Areas critical to pedestrian ingress, egress, or life safety may be snowmelted,
with approval from the Chief Building Official, on a case-by-case basis.
307.1.4 Pool and Spa Energy Use (not a budget). Pool and spa energy use shall be
the consumption of energy from depletable soumes used for heating pools and spas.
Pool and spa energy use for dwelling units is calculated as follows:
Pools intended for year round use shall calculate their energy consumption at
332KBTU/yr/sq.ft at 100% equipment efficiency.
Pools intended for summer use only shall calculate their energy consumption au
29KBTU/yr/sq.f~ at 100% equipment efficiency.
Spas shall calculate their energy consumption m 430KBTU/yr/sq.ft at 100%
equipment efficiency.
Pool and spa energy use shall be adjusted for efficiency of boiler and shall be added to
the subtotal source energy consumption calculated as per the requirements of Section
307.2.2.2. In the case of Ground Soume Heat Pumps the efficiency of the system is
100% as source energy.
307.2 Compliance Demonstration Requirements for Performance Standards.
The application for a building permit shall include documentation that demonstrates,
using an approved calculation method, the compliance version of the City of
Aspen/Pitkin County Energy Conservation Code's Public Domain Computer Program
- 3.14 - 2003 APECC
or calculation method approved by the Chief Building Official. All new buildings
shall be designed so that its total soume energy consumption from depletable energy
sources does not exceed the combined water heating and space conditioning budgets.
Supplemental energy for outdoor uses is available from Renewable Energy Mitigation
Program as per KEMP Section 311 and/or from on-site renewable energy systems
integrated with the building energy systems as per Section 311.4. The use of
supplemental energy is limited to annual consumption of 240,000~000 BTU per
parcel. The parcel is considered that development associated with a specific parcel
identification number.
EXCEPTIONS:
1. Roof heating cable.
2. Areas critical to pedestrian ingress, egress, or life safety may be snowmelted,
with approval from the Chief Building Official, on a case-by-case basis.
307.2.1 To demonstrate compliance, the applicant's documentation shall determine
the combined energy budget for the proposed building by adding the following:
1. The annual water heating budget calculated from Equation 3-1 (kBtu/yr.-fi2);
and
2. The annual space-conditioning budget (kBtu/yr.-ft2) as determined pursuant to
Section 307.1.2.
307.2.2 Calculate the source energy consumption subtotal of the proposed building,
using the proposed building's actual glazing area, orientation, and distribution, and its
actual energy conservation and other features, including the actual water heating,
space conditioning equipment and duct conditions and locations. TO determine the
subtotal source energy consumption, use an approved calculation method. Add
snowmelt energy use and pool and spa energy use to obtain total source energy
consumption as per Sections 307.1~3 and 307.1.4.
Include in the calculation the energy required for building cooling even if the building
plans do not indicate that air conditioning will be installed.
307.2.3 The proposed building design complies if the total source energy
consumption pursuant to Section 307.2.2 is equal to or less than the combined energy
budget established in Section 307.2.1.
307.3 Required Calculation Assumptions. The Chief Building Official shall publish
the assumptions and calculation methods it used to develop the standards for
residential buildings, including those specified in Section 307.
In determining the water heating and SPace conditioning budgets and calculating the
energy use of the proposed building design, snowmelt energy use, and private pool
- 3.15 - 2003 APECC
and private spa energy use, the applicant shall use only these assumptions and
calculation methods approved by the Chief Building Officiall
307.3.1 Such assumptions shall include, but not be limited to, the following:
1. The operating conditions regarding indoor temperature; occupancy loads and
schedules; equipment loads and OPeration schedules; including lighting, HVAC,
and miscellaneous electrical; and outdoor weather conditions;
2. The physical characteristics of building pressurization, interior heat transfer,
film coefficients, shading coefficient and operation of installed shading devices,
ground temperatures, and the method of determining slab heat loss;
3. The applicable modeling procedures for the assumptions, design conditions,
and physical characteristics described in Section 307.2.
EXCEPTION: The Chief Building Official may approve alternative
schedules, assumptions, and performance modeling procedures that may
be used in lieu of those described in Section 307.3.1, provided such
alternatives do not alter the efficiency level required by these standards.
307.3.2 The total calculated annual energy consumption shall include all energy used
for comfort heating, comfort cooling, ventilation for the health and comfort of
occupants, service water heating, snowmelt, and private pool and private spa heating.
EXCEPTIONS:
1. Roof heating cable.
2. Areas critical to pedestrian ingress, egress, or life safety may be snowmelted,
with approval from the Chief Building Official, on a case-byicase basis.
307.3.3 Heat transfers within the same building to adjacent spaces that are not
covered by the permit and that are independently provided with space conditioning
may be considered to be zero. Heat transfers to spaces not yet provided with space
conditioning may be modeled as separate unconditioned zones, or as outside
conditions.
307.3.4 The total calculated annual energy consumption need not include energy from
any non-depletable sources, regardless of the purpose of the energy consumed.
307.3.5 The U-value of installed manufactured fenestration products shall meet the
requirements of Section 305.14. The U-value of site-built fenestration products shall
be those published by the Chief Building Official, based on an approved method that
determines the area weighted average U-value for generic types of products.
307.3.6 Shading coefficients for interior devices used with fenestration products shall
- 3.16 - 2003 APECC
be taken from Tables 25, 26, and 27 of Chapter 27 of the ASHRAE Handbook of
Fundamentals (1989), except that the minimum shading coefficient that shall be
assumed for any interior shading device is 0.66.
SECTION 308 - RESIDENTIAL ADDITIONS
308.1 Additions - Scope. Additions to existing residential buildings shall meet the
requirements of Sections 303, 304, and 305; and, the requirements of this section
(308.2 or 308.3 below).
308.2 Prescriptive Approach. Additions to existing buildings shall meet the
requirements of 1, 2, or 3 below, or Section 306.
I. Additions up to 50 square feet shall not exceed 40 square feet of fenestration
plus the fenestration area that was removed by the addition, and the U-value shall
not exceed 0.40.
2. Additions greater than 50 square feet but less than 150 square feet shall meet all
the requirements of Section 306, except that the addition's total fenestration area
limit is the maximum of the chosen package plus the fenestration area that was
removed by the addition.
3. Additions greater than 150 square feet shall meet all the requiremems of
Section 306.
308.3 Performance Approach. Performance calculations shall meet the requirements
of either 1 or 2, below:
1. The addition complies if the addition alone meets the combined water
heating and space conditioning energy budgets (see Section 307.2).
2. The addition complies if the energy efficiency of the existing building is
improved such that the total source energy consumption of the improved
existing building and the addition is equal to or less than that of the
unimproved existing building.
3. In cases of supplemental energy for exterior use. full compliance as per
Section 305, 306 and 311 is required. Pre-existing exterior energy uses can
receive credit for supplemental energy (see section 311.5); additions to pre-
existing exterior uses shall be subject to Section 311.
SECTION 309 - RESIDENTIAL ALTERATIONS
309.1 Alterations -- Scope. Alterations to existing residential buildings shall meet
any requirements of Sections 303, 304, and 305 that apply to the system or
envelope component being changed and the requirements of this section. The U-
value of any fenestration product replaced as part of an alteration shall not exceed
0.40 as defined by the National Fenestration Rating Council (i.e. Whole product
performance). An increase in the area of feneStration, more than 40. sq.ft., or the
installation of recessed cans in a warm/cold ceiling is not an alteration and shall
- 3.17 - 2003 APECC
meet the requirements of Section 306 or 307. In cases of supplemental energy for
exterior use, full compliance as per Section 311 is required. Pre-existing exterior
energy uses can receive credit for supplemental energy (see section 311.5);
additions to pre-existing exterior uses shall be subject to Section 311.
NOTE: Fenestration products repaired or replaced, not as part of an alteration,
need not comply with the U-value requirements applicable to alterations.
SECTION 310 - NONRESIDENTIAL BUILDINGS Shall comply with the
"Energy Guidelines for Commercial and High-Rise (more than 4 stories) Residential
Buildings" (AHSRAE 90.1) in Colorado or the most current version of ComcheckEZ
and Section 303, 304 & 305 of this code.
EXCEPTION: Buildings that are certified to meet the requirements of the
Leadership in Environmental and Energy Desi~ (LEED) program certification comply ~vith
the performance standard and are eligible for 100% rebate of the energy code penmt fees.
SECTION 311 - RESIDENTIAL SNOWMELT, OUTSIDE POOL, OUTSIDE SPA
SYSTEMS AND EQUIPMENT COMPLIANCE
311.1 Scope. Residential snowmek, outside pool. or outside spa systems and
equipment may be installed only if the supplemental energy (above the energy budget
as per the performance method) meets the requiremems of REMP option (Section
311.2) or On-site renewable energy (Section 311.4). This section applies to all
installations for which an application for a permit or renewal of an existing permit is
filed or is by law required to be filed with or without an associated Building Permit
Residential snowmelt or spa systems and equipment shall meet the requirements of
Section 303 and 305.12.
311.2 Renewable Energy Mitigation Program (REMP) Option -Exterior energy
use for residential snowmelt systems, outdoor spas, and outdoor pools may be
supplemented as per the following:
311.2.1. The REMP fee shall be paid at the time of issuance of the building permit.
Fees are based on the amount of supplemental energy required above the allowable
energy budget (as per the performance method). All fees collected pursuant to this
section shall be recorded in a separate fund by the City Finance Director and shall be
spent in accordance with a joint resolution by the Aspen City Council and Pitkin
County Board of County Commissioners.
311.2.2 This REMP option is voluntary. Applicants interested in supplemental energy
above the allowable budget can alternatively choose to produce renewable energy on-
site (Section 311.4) with solar hot water, solar photovoltaics, or micro-hydro Also
the energy efficient technology of or ground soume heat pumps is permitted for
supplemental energy. Electric resistance heating is not permitted for exterior energy
applications.
- 3.18 - 2003 APECC
311.2.3 Snowmelt energy consumption shall be calculated as in Section 307.1.3.
311.2.4 Outdoor pool and spas shall have their energy consumption calculated as in
Section 307.1.4
311.2.5 The KEMP option is available through the permit process for each parcel.
The KEMP option for supplemental energy is capped at 240,000,000 British Thermal
Units or a total fee of $100,000 whichever is greater.
311.2.6 REMP fees for snowmelt, spas, or pools shall be calculated according to the
following equation:
[(Supplemental Energy in BTUs per year) divided by 3412BTU/kWh]*20
years*$0.07/kWh
311.2.7 Residences using KEMP for supplemental energy must use the performance
method see Sec 307. Minimum standards for the performance calculations for new
construction are listed in Section 305 under the mandatory requirements with the
following exceptions:
Wall Insulation R- 19
Roof Insulation R-38
Floor Insulation R- 19
Boiler Efficiency 85%
Fenestration U= 0.40
311.2.8 The following examples are illustrated for residences using the REMP option
for snowmelt, spas, and/or pools. These residences that did not have BTU's available
from the performance method calculations and are using an 87% efficient boiler.
Snowmelt Example
(Snowmelt requested 500 sq. ft.)
(34,425(BTU per sq. ft. per year) / .87 (efficiency rating of boiler))*500 (snowmelt area)=
19,784,482 (BTU/yr) / 3412 (BTU per kWh)= 5798.5 (kWtffyr)* 20 (years)* .07/kWh --$8,117.90
REMP fee will be $8,117.90
Pool Example
(Pool summer use only 600 sq. ft.)
(29000(BTU per sq. ft. per year) / .87 (efficiency rating of boiler))*600 (pool area)= 20,000,000
(BTU/yr) / 3412 ( BTU per kWh)= 5861.66 (kWh/yr)* 20 (years)* .07/kWh =$8,206.00
REMP fee will be $8,206.00
- 3.19 - 2003 APECC
(Pool year around outdoor use 600 sq. ft.)
(332000(BTU per SCl. ft. per year) / .87 (efficiency rating of boiler))*600 (pool area)= 228,965,520
(BTU/yr) / 3412 ( BTU per kWh)= 67,105.95 (kWh/yr)* 20 (years)* .07/kWh =$93,948.00
REMP fee will be $93,948.00
Spa Example
(Spa 100 sq. ft. year around use)
(430000(BTU per sq. ft. per year) / .87 (efficiency rating of boilcr))*100 (spa area)= 49,425~287
(BTU/yr) / 3412 ( BTU per kWh)= 14,485.72 (kWh/yr)* 20 (years)* ~07/kWh =$20,280100
REMP fee will be $20,280.00
311.3 Renewable Energy Mitigation Program (REMP) for houses over 5,000 sq.
ft. A new home, remodel, addition, or a project with a remodel plus an addition with
more than-5000 sq. ft. (as defined by building code sq.ft.) is required to offset a small
portion of their fossil fuel energy consumption through the use of on-site renewable
energ3~ system or through a flat fee payment to REMP. Renewable energy system
installed for this requirement does not qualify for credit for supplemental energy.
311.3.1 This requirement applies to all installations for which an application for a
permit or renewal of an existing permit is filed or is by law required to be filed with
or without an associated Building Permit.
311.3.2 The on-site renewable energy requirement can be met by the installation of a
2-kilowatt solar photovoltaic or equivalent renewable energy system. This
requirement can be alternatively handled off-site by payment of a REMP fee as
follows:
over 5,000 sq. ft. $5,000.00
over 10,000 sq. ft. $10,000.00
311.4 On-site renewable energy systems for outdoor uses of energy. Total supplemental
energy is capped at an annual energy use of 240,000,000 BTU per parcel. Electric
resistance heating is not permitted for supplemental energy. Supplemental energy for
exterior uses of energy must be calculated as per methods in Secti°n 307.1.3 & 307.1.4.
311.4.1 Solar Hot Water Systems as on-site renewable energy.
Supplemental energy use is capped at 240,000,000 BTU (including solar portion). The solar
hot water system installed for supplemental energy use must also be integrated into the
building's energy system. If at least 50% of the supplemental energy is from solar hot water
then the balance of the energy can be from a back-up natural gas or propane boiler. Size of
solar hot water systems are limited to 500 square feet of collector area, additional
supplemental energy can be purchased through a REMP fee.
- 3.20 - 2003 APECC
Calculation of solar portion of supplemental energy shall depend on seasonal application for
exterior energy use as follows:
Winter only uses:
135,000 BTU/square foot solar collector
Smnmer only uses:
205,000 BTU/square foot solar collector
Year round application of solar:
340,000 BTU/square foot solar collector.
These solar collector credits shall not be adjusted for efficiency of the system.
Solar Portion - Winter Use
(Supplemental energy for snowmelt = 120,000,000 BTU/yr)
t20,000,000 BTU/yr. divided by 2= 60,000,000 BTU/yr.= solar portion
60,000,000 divided by 135,000 BTU/sf solar collector = at least 444 sfof solar collector
Solar Portion - Year Round Use
(Supplemental energy for summer pool and snowmelt = 240,000,000 BTU/yr)
240,000,000 BTU/yr divided by 2 =120,000,000 BTU/yr. = solar portion
120,000,000 BTU/yr. divided by 340,000 BTU/sq fl:=- at least 352 ft of solar collector for
year round use.
Solar Example
Supplemental energy for snowmelt only = 240,000,000 BTU/yr)
Partial Solar Hot Water & Partial REMP
Maximum solar snowmelt-500 sq.ft, of collector
240,000,000 BTU/yr. divided by 2= 120,000,000 BTU/yr solar portion
120,000,000 divided by 135,000 BTU/sfsolar collector = 888 sfof solar collector - for
winter only use
Only 500 sq.ft, collector permitted on-site = 67,500~000 BTU= maximum energy for
solar snowmelt
Balance of renewable energy with REMP fee for solar not on site= 888-500= 388 sf
388 sf X 135,000 BTU/slX 2= 104,760,000 BTU/yr = REMP portion
- 3.21 - 2003 APECC
REMP fee will be $42,984
Documentation for approval for supplemental energy includes: Solar hot water collectors
located on plans, schematics of the plumbhag and control layout and equipment
specifications. Solar hot water system plans have to be prepared and submitted by a COSEIA
(Colorado Solar Energy Industries Association) certified installer. Flat plate solar collector
panels must be certified by SRCC or OG100 standards.
311.4.2 Solar Electric System as on-site renewable energy
Solar electric (photovoltaic) systems tied to the electric grid, are eligible for credit for
supplemental energy use. Annual maximum supplemental energy use is 240,000,000 BTU per
parcel including 50% credit for solar. Solar electric can supply part of the supplemental energy on
site and part through payment ora REMP fee. Annual solar credit for solar electric is 15,375,000
BTU per kilowatt (KW) installed as source energyl Systems must be sited, Oriented and installed
for solar electric panels to supply at least 90% of rated capacity of the installed KW. System
designer/installer must be certified by COSEIA (Colorado Solar Energy Industries Association).
Solar Electric Example
(Supplemental energy for suowmelt = 240,000,000 BTU/yr)
240,000,000 BTU/yr divided by 2= 120,000,000 BTU per year solar portion
120,000,000 divided by 15,375,000 BTU per KW = 7.8 KW installed
Documentation for approval of supplemental energy includes: System sited on the plans,
UL listing of system components, provide orientation for documentation of 90% rated
capacity of panels and installers' COSEIA certification,
311.4. 3 Ground source heat pumps (GSHP) as energy efficient option.
Supplemental use is permitted up to a maximum of 240,000,000 BTU. In order to use a GSHP for
supplemental energy the GSHP system must supply at least 20% of the peak load for heating
the house and all the supplemental energy uses. (See Section 305.16 for details on system
requirements). In addition the electricity for powering the ground source heat pump for 50%
of the supplemental energy uses must be from renewable energy sources. Renewable energy
can be purchased for 20 years through a payment ora REMP fee as follows:
(((Total BTU per year of supplemental energy /3412 BTU per kWh)/ 3) *20years *
$.07/kWh) times 50%= REMP fee
This calculation uses a fixed value for Coefficient of Performance (COP) of 3; COP in this
equation does not vary.
- 3.22 - 2003 APECC
BTUper year=~31a~sq.ft, of snowmelt)
(120,000,000 GSltP Ex
(((120,000,000 BTU per year ! 3412 (BTU per kWh))/3 )X 20 years X.07/kwh)X 50O/o=
REMP fee will be $8,206
311.5 Pre-existing systems
Pre-existing snowm¢lt, pools or spas which are being overhanl~d or renovated qualify for a
supplemental energy credit. This credit cm~ only be applied towards an installation of'exterior
energy on the same parcel Thc calculati°n of the credit shall be based on supplemental
energy.
SECTION 312 - RESIDENTIAL AND NONRESIDENTIAL REPAIRS
312.1 Scope. Repairs to building components, systems, or equipment which do not
increase their pre-existing energy consumption need not comply with the APECC. If
a building component, system, or piece of equipment is replaced, however, it must be
treated as an alteration.
- 3.23 - 2003 APECC