HomeMy WebLinkAboutORD 99-25 - Energy Conservation StandardsORDINANCE ;,
WHEREAS, it is the desire of, the City Council of Georgetown, Texas to replace and
adopt Section S26.7000 of the 1992 Council of American Building Officials' (CABO) One and
Two Family Dwelling Code, and Appendix E of the 1994 Standard Building Code, to include
multi -family dwellings, which the City Council adopted in September 1995, with the
construction standards for energy conservation as outlined in Exhibit A; and
WHEREAS, the City Council has determined that adopting energy conservation
standards will ensure that residential construction is energy efficient within the corporate city
limits of Georgetown and the extra -territorial jurisdiction of Georgetown; and
WHEREAS, the Building Standards Commission, appointed by the City Council, has
reviewed the effect of these regulations and recommends that the City Council adopt the
proposed energy conservation standards regulations; and
WHEREAS, the caption of this ordinance was printed in the Williamson County Sun on
April 7, 1999 in compliance with the City Charter of the City of Georgetown;
NOW, THEREFORE, BE IT ORDAINED BY THE CITY COUNCIL OF THE C11
OF GEORGETOWN, - a THATO
Section 1. The facts and recitations contained in the preamble of this ordinance are
thereby declared to be true and correct, and are incorporated by reference herein and
made a part hereof, as if copied verbatim. The City Council hereby finds that this
ordinance implements Housing Policy 10,0 of the Century Plan -Policy Plan Element,
which states: "The City cooperates with builders, developers, and property owners to
provide safe and adequate housing opportunities for all citizens", and further finds that
the enactment of this ordinance is not inconsistent or in conflict with any other Century
Plan Policies, as required by: Section 2.03 of the Administrative Chapter of the Policy
Plan,
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Section 2. The Energy Conservation Code is hereby adopted by the City Council of the
City of Georgetown by replacing chapter 15.03 to the Georgetown Municipal Code of
the City of Georgetown, Texas as provided in Exhibit A.
Section 3. All ordinances and resolutions, or parts of ordinances and resolutions, in
conflict with this ordinance are hereby repealed, and no longer of any force and effect.
Section 4. If any provision of this ordinance or application thereof to any person or
circumstance, shall be held invalid, such invalidity shall not affect the other provisions or
application thereof, of this ordinance which can be given effect without the invalid
provision or application, and to this end the provisions of this ordinance are hereby
declared to be severable.
Section 5. The Mayor is hereby authorized to sign this ordinance and the City
Secretary to attest. This ordinance shall become effective and be in full force and effect
in ten (10) days on and after publication in accordance with the provisions of the
Charter of the City of Georgetown.
PASSED AND APPROVED on first reading on the 13 of , 1999.
PASSED AND APPROVED on second reading on the of.R ,
1999.
ATTEST: THE CITY OF GEORGETOWN:
r
Sandra D. Lee, City Secretary
Marianne Landers Banks
City Attorney
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Leo`Wood, Mayor
10494001
15.03.010 Scope
The provisions of this chapter shall regulate the installation of heating, ventilation
and air-conditioning (HVAC} systems for residential structures. This will include
the installation of new HVAC systems for new residential construction, as well as
structural construction standards for new construction. This chapter shall also
regulate the replacement of existing HVAC equipment and systems in existing
residential structures. The structural construction standards for existing residential
structures will not be applicable unless the existing structure is being remodeled
or reconstructed in excess of 50% or more of its present market value. Existing
duct systems will not have to be replaced and meet the provisions of this chapter
unless the entire HVAC system, to include a new duct system, is completely
intended for replacement. The intent for the provisions listed in this chapter are to
encourage the installation of minimum standards of Energy Efficiency
Rating(EER) or Seasonal Energy Efficiency Rated (SEER) equipment of 10 or
greater for HVAC systems and to provide energy efficient construction standards
and design so that energy cost can be maintained at low rates for now and in the
future. The installation of all HVAC equipment and systems shall meet the
provisions of the 1992 CABO One and Two- Family Dwelling Code, with the
1993 and 1994 revisions and the 1994 Standard Mechanical Code. The structural
construction methods shall meet the same 1992 CABO code with the 1993 and
1994 revisions and also the 1994 Standard Building Code for structural integrity.
15.03.012 Definitions -
For the purpose of this ordinance certain abbreviations, terms, phrases words
and their derivatives shall be construed as defined in this section:
ARI Manual - Directory of Certified Unitary Equipment Standards, 2101240 270
as published by the Air -Conditioning & Refrigeration Institute.
ASHRAE - American Society of Heating, Refrigeration and Air Conditioning
Engineers.
CABO - Council of American Building Officials
Dwelling - Any building which contains one or two "Dwelling Units" used,
intended, or designed to be built, used, rented, leased, let or hired out to be
occupied, or which are occupied, or which are occupied for living purposes.
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Dwelling Unit - A single housekeeping unit comprised of one or more rooms
providing complete independent living facilities for one or more persons,
including permanent provisions for living, sleeping, eating, cooking and
sanitation.
EER - Energy Efficiency Ratio. The ratio of net equipment cooling capacity in
Btu/h (W) to total rate of electric input in watts under designated operating
conditions. When consistent units are used, this ratio becomes equal to the
Coefficient of performance (COP) -Cooling.
Existing Structures - Residential Dwellings - Existing structure is a building
erected prior to the adoption of this ordinance, or for one which a legal building
permit has been issued prior to this ordinance.
W
HVAC - Heating, Ventilating and Air - Conditioning
Knee Nall - A framed wall extension above a common top plate of a framed stud
wall to accommodate raised ceilings, such as vaulted and cathedral.
Mastics - Any of various pasty materials used as protective coatings or cements
which is non toxic in nature.
Muti-Family Dwelling - A building containing three or more dwelling units. See
also, definition under Standard Building Code.
New Construction - Residential Dwellings - Buildings erected after the
adoption of this ordinance or for one which a legal building permit has been
issued.
R -Value - The resistance to heat transmission. A wall, for example, may be
composed of several materials such as brick, sheathing, insulation, wood,
sheetrock, etc. The R -Value in this ordinance is calculated by several components
constructed together to form an assembly.
Standard Building Code - SBCCI - The adopted building code for the City of
Georgetown. The purpose of the SBBCI Building Code in this ordinance is for the
construction methods of not only one and two-family dwelling, but also R2
Occupancy groups. R2 occupancy groups, for the purpose of the Energy ordinance
and structural requirements are to include. Apartment houses, Convents,
Fraternities and Dormitories, Monasteries, and Rectories.
SEER - Seasonal Energy Efficiency Ratio - The total cooling output of an air
conditioner during its normal annual usage period for cooling, in Btu/h (W),
09400 q2006 t EX 11,4 ;74)4
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divided by the total electric energy input during the same period, in watt-hours.
Shading - The evaluation of solar heat gain through windows.
15.03.020 Insulation --Thermal Package And Construction Standards
.021 Exterior wall insulation systems shall have a minimum rating value of R-17.
Interior walls facing unair-conditioned spaces, such as the wall separating the
garage and living space, shall have a minimum rating of R-15. The R -Value is
calculated by the construction of several components which are to be considered
an assembly.
.022 Ceiling insulation systems shall have a minimum rating of R-30 on the flat
surfaces and a minimum rating of R-26 on knee walls and cathedral ceilings.
.023- Floor insulation systems shall have a minimum rating of R-19 for pier and beam
structures and none for structures built on slabs.
-.024 Attic ventilation systems shall have a minimum of one (1) square foot of free air
for every 300 square feet of attic space (including the garage) with upper and
lower ventilation. For attics with only upper ventilation, the minimum shall be
one (1) square foot of free air for every 150 square feet of attic space (including
the garage).
.025 Window systems shall have a heat transfer multiplier no less than 0.29 which is
equal to or greater than metal framed, double paned windows. The square footage
of all the windows in the walls, doors, and skylights shall not exceed twenty-five
(25) percent of the square footage of the air-conditioned space of the structure.
Those structures exceeding the twenty-five (25) percent standard shall be required
to provide additional window shading treatment on the East/Southeast and
West/Southwest facing windows. The shading treatment will be equal to or
greater than 0.75 Solar Shading Coefficient.
Overhangs, trees, natural shade and the direction of the exterior walls with a large
amount of windows, may be used in the determination of the shading coefficient.
.026 HVAC duct systems shall include R-6, foil back flex duct or any duct material
that is equivalent, and all duct material shall meet the standards as outlined in the
1994 Standard Mechanical Code, Section 603 and the 1992, with the 1993 and
1994 revisions of the CABO One and Two -Family Dwelling Code, Section M-
1102.
.027 Air infiltration treatment systems shall include at a minimum, polysealing all
plumbing and electrical penetrations, door and window inserts, and sole plate.
.028 All duct joints, seams and connections shall be securely fastened and sealed,
externally, with welds, gaskets, mastics (adhesives), mastic -plus -embedded -
fabric systems or tapes. Mastics shall not be diluted. Approved Mastics include
the following Mastic or mastic -plus -embedded fabric systems which meet the
provisions of UL 181 that are relevant to the duct type to which the mastic will be
applied and the mastics shall need to be approved for the environmental uses
intended. Any of the approved methods of sealing the connections as provided for
in the Building and Mechanical codes, as listed in the scope of this chapter, are
acceptable methods.
.029 Flexible Ducts shall be installed and configured and supported so as to prevent the
use of excess materials, prevent duct dislocation or damage, and prevent the
constriction of the duct below the rated diameter. Bends shall maintain a center
line of not less than one duct diameter.
15.03.030 MVAC -- Mechanical Systems Standards
.031 All new and replacement HVAC equipment are encouraged to have an Energy
Efficiency Rating (EER) or Seasonal Energy Efficiency Rating (SEER) of not less
than ten (10), but twelve (12) or better. Qualifying units will be those listed in the
ARI manual published by ASHRAE.This will include all package units and split
systems.Window units are not to be included.
.032 The City of Georgetown does realize that some areas of the city are not supplied
by gas service and therefore these areas operate primarily with all electric service.
The City of Georgetown would like to encourage the installation and use of heat
pumps and gas furnaces whenever possible to provide for energy savings and low
electrical utility rates.
.033 To encourage an EER or SEER rating of twelve (12) or better, the charge for a
permit for the installation of HVAC systems with a rating of ten (10), will be
$50.00, per system or equipment, (if more than one system is installed in the same
building), for the replacement of existing HVAC equipment components.The
permit fee for the installation of a twelve (12) SEER or better would be at no
charge for new construction and $25 for the replacement of existing HVAC
equipment components, to include the duct system if applicable.Typically permit
fees for the installation of HVAC systems for new construction are presently part
of the primary building permit fee and the Mechanical permit fee for repair or the
replacement or change out of existing HVAC equipment is a standard $25.00.
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15.03.040 REBATE- Replacement Of Existing HVAC Equipment In Residential
Dwellings
.041 As an incentive to install a twelve (12) SEER or better, energy rated HVAC
equipment, if the HVAC equipment or system is being replaced in a existing
residential structure, the owner of the property will receive a $350.00 rebate per
replacement. If the system is replaced with a ten (10) SEER, then no rebate will
be given. In this case, the system does not have to include the replacement of the
duct or air conveyance systems, only the equipment components.All of the
components such as the air handler, cooling coil and the condensing unit shall be
compatible. This rebate does not include new construction.
15.03.050 Permits and Inspections For Installation of HVAC Equipment In Newly
Constructed And Existing Structures.
.051 Building permit and application are required for the installation of HVAC
equipment and systems. Plans and specifications for new construction shall
provide sufficient information in order to provide compliance with this ordinance.
The R -values, HVAC equipment brand name and model designation numbers, R -
Value and type of ducts to be used and elevations to show window amounts
should be included.
052 At the time of Mechanical permit issuance, the contractor or the homeowner will
need to provide the manufactures serial numbers of the equipment to be installed
along with the SEER rating. The installation of the equipment shall need to be
permitted, inspected and manufactures serial number verified from the equipment
that is installed in the field in order to verify the SEER rating from the Directory
of Certified Unitary Equipment Standards, 210/240 270 prior to the rebate being
paid to the owner of the property where applicable for existing structures only.
This inspection process shall apply to new construction, but less the rebate.
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