OR 2007-1168 Adopting the Internation Energy Conservation Code
AN ORDINANCE OF THE CITY OF COPPELL, TEXAS
ORDINANCE NO.2007-1168
AN ORDINANCE OF THE CITY OF COPPELL, TEXAS
AMENDING THE CODE OF ORDINANCES BY AMENDING CHAPTER
15 ARTICLE 15-7 TO ADOPT THE INTERNATIONAL ENERGY
CONSERVATION CODE, 2006 EDITION, AS THE CITY OF COPPELL
ENERGY CODE; PROVIDING AMENDMENTS TO THE
INTERNATIONAL ENERGY CODE 2006 EDITION; PROVIDING A
SEVERABILITY CLAUSE; PROVIDING A REPEALING CLAUSE;
PROVIDING A SAVINGS CLAUSE; PROVIDING A PENALTY FOR
VIOLATION OF THIS ORDINANCE NOT TO EXCEED THE SUM OF
FIVE HUNDRED DOLLARS ($500.00) FOR EACH OFFENSE; EXCEPT
HOWEVER, WHERE A DIFFERENT PENALTY HAS BEEN
ESTABLISHED BY STATE LAW FOR SUCH OFFENSE WHICH IS A
VIOLATION OF ANY PROVISION OF LAW THAT GOVERNS FIRE
SAFETY, ZONING, OR PUBLIC HEALTH AND SANITATION,
INCLUDING DUMPING OF REFUSE, THE PENALTY SHALL BE A
FINE NOT TO EXCEED THE SUM OF TWO THOUSAND DOLLARS
($2,000.00) FOR EACH OFFENSE; AND PROVIDING AN EFFECTIVE
DATE.
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF
COPPELL, TEXAS:
SECTION 1.
That the Code of Ordinances of the City of Coppell, Texas be, and
the same is, hereby amended by amending Chapter 15, Article 15-7 in part to adopt the
International Energy Conservation Code, 2006 Edition, with amendments to read as
follows:
“ARTICLE 15-7. ENERGY CONSERVATION CODE
Sec. 15-7-1 Energy Conservation Code – Adopted.
There is hereby adopted the International Energy Conservation Code, 2006 Edition, and
made a part hereof for all purposes, the same as if fully copied in full herein, with the
exception of such sections hereof, which are hereafter deleted, modified or amended.
Sec. 15-7-2 Amendments.
The following sections of the International Energy Conservation Code, 2006 Edition, are
hereby amended to read as follows:
1. Section 101.4.2; shall be amended to read as follows:
101.4.2 Historic Buildings.
Any building or structure that is listed in the State or
National Register of Historic Places; designated as a historic property under local or
state designation law or survey; certified as a contributing resource with a National
Register listed or locally designated historic district; or with an opinion or certification
that the property is eligible to be listed on the National or State Registers of Historic
Places either individually or as a contributing building to a historic district by the State
Historic Preservation Officer of the Keeper of the National Register of Historic Places,
shall comply with all of the provisions of this code.
Exception: Whenever a provision or provisions shall invalidate or jeopardize the
historical designation or listing, that provision or provisions may be exempted.
2. Amend Section 103.1.1, Above Code Programs, to read as follows:
103.3.1.1 Alternative Compliance.
A building certified by a national, state, or local
accredited energy efficiency program and determined by the Energy Systems
Laboratory to be in compliance with the energy efficiency requirements of this section
may, at the option of the Code Official, be considered in compliance. The United
States Environmental Protection Agency's Energy Star Program certification of energy
code equivalency shall be considered in compliance.
3. Amend Section 202, General Definitions, by adding the following definition:
Glazing Area.
Total area of the glazed fenestration measured using the rough
opening and including sash, curbing or other framing elements that enclose
conditioned space. Glazing area includes the area of glazed fenestration assemblies in
walls bounding conditioned basements. For doors where the daylight opening area is
less that 50 percent of the door area, the glazing area is the daylight opening area. For
all other doors, the glazing area is the rough opening area for the door including the
door and the frame.
4. Amend Section 301.1, to read as follows:
301.1 General.
The sub-climate zone of Coppell, Texas, is 3.2.
5. Add Section 401.2.1, Compliance Software Tools, to read as follows:
401.2.1. Compliance Software Tools
. Software tools used to demonstrate energy
code compliance that are deemed acceptable by the building official may only utilize
the energy chapter of the 2001 or the 2003 International Residential Code when code
edition selection is available.
6. Amend Section 402.1.1, Insulation and fenestration Criteria, to read as follows:
402.1.1 Insulation and Fenestration Criteria
. The building thermal envelope shall
meet the requirements of Table 402.1.1 based on the climate zone specified in Chapter
3.
When compliance using Table 402.1.1 is demonstrated with a ceiling R-value of R30
or less, no more than 33% of the total projected ceiling area may be of cathedral type
construction (ceiling joist/roof rafter assembly) and the required insulation R-value
may be reduced to a minimum of R22 insulation when the remaining ceiling area
insulation is increased to R38.
7. Amend Table 402.1.1 INSULATION AND FENESTRATION REQUIREMENTS BY
COMPONENT to read as follows:
TABLE 402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
a
(Coppell, Texas)
MAX
CLIGLAZ
ED MAX MIN MIN MIN
MAT
E - AREA GLAZEMAX WOOD BASESLAMIN
TO D SKYMAX MIN FRAMMIN MENT B
SUB CRAW
CLIWALFENESTLIGHGLAZECEILE FLOWALR-L
L RATIOT D ING WALL OR L VAL
MATSPACE
E AREA N U-U-FENESTR-R-R-R-UE & WALL
RATIFACTOFACRATION VALVALUVALVALUDEP
ZONR-
bd c
E O R TOR SHGC UE E UE E TH VALUE
15 0.60 0.65 0.40 30 13 19 6 0 7
20 0.51 0.65 0.40 38 13 19 6 0 7
25 0.45 0.65 0.40 38 16, 13 19 6 0 7
3.2
e
+ X
30 0.40 0.65 0.35 38 16, 13 19 6 0 7
e
+ X
For SI: 1 foot = 304.8 mm.
R-values are minimums. U-factors and SHGC are maximums. R-19 shall be
a.
permitted to be compressed into a 2 x 6 cavity.
The fenestration U-factor column excludes skylights. The SHGC column applies
b.
to all glazed fenestration.
R-5 shall be added to the required slab edge R-values for heated slabs.
c.
The total R-value may be achieved with a combination of cavity and insulating
d.
sheathing that covers 100% of the exterior wall.
The wall insulation may be the sum of the two values where the first value is the
e.
cavity insulation and the second value is insulting sheathing. The combination of
cavity insulation plus insulating sheathing may be used where structural sheathing
covers not more than 25% of the exterior wall area and insulating sheathing is not
required where structural sheathing is used. If structural sheathing covers more
than 25% of exterior wall area then the wall insulation requirement may only be
satisfied with the single insulation value.
8. Amend Table 402.1.3 EQUIVALENT U-FACTORS to read as follows:
TABLE 402.1.3
a
EQUIVALENT U-FACTORS
MAX
GLAZED
MIN
AREA WOOD
TO MAX
CLIMATE MAX MIN FRAME MIN MIN
- SUB WALL GLAZED SKYLIGHT MAX GLAZED CEILING WALL FLOOR BASEMENT
AREA U-FENESTRATION
CLIMATE FENESTRATION R-R-R-WALL
bd
ZONE RATIO U-FACTOR FACTOR SHGC VALUE VALUEVALUE R-VALUE
15 0.60 0.65 0.035 0.082 0.047 0.096 0.101
20 0.51 0.65 0.030 0.082 0.047 0.096 0.101
3.2
25 0.45 0.65 0.030 0.071 0.047 0.096 0.101
30 0.40 0.65 0.030 0.071 0.047 0.096 0.101
a.Nonfenestration U-factors shall be obtained from measurement, calculation or an approved source.
9. Amend Section 402.3.2. Glazed Fenestration SHGC., to read as follows:
402.3.2 Glazed Fenestration SHGC
. An area-weighted average of fenestration
products more than 50 percent glazed shall be permitted to satisfy the SHGC
requirements. In sub-climate zones 2.1, 2.2, 3.1, 3.2 and 3.3 the maximum area-
weighted average and the maximum SHGC shall not exceed 0.40.
10. Amend Section 402.3.3, Glazed Fenestration exemption, to read as follows:
402.3.3 Glazed Fenestration Exemption.
Up to one percent of glazed fenestration
per dwelling unit shall be permitted to be exempt from U-factor and SHGC
requirements in Section 402.1.
11. Amend Section 402.3.5 Thermally Isolated Sunroom U-factor, to read as follows:
Section 402.3.5 Thermally Isolated Sunroom U-factor.
For zones 4 through 8, the
maximum fenestration U-factor shall be 0.50 and the maximum skylight U-factor
shall be 0.75. New windows and doors separating the sunroom from conditioned
space shall meet the building thermal envelope requirements.
12. Amend Section 402.3.6 Replacement Fenestration, to read as follows:
Section 402.3.6 Replacement Fenestration.
Where some or all of an existing
fenestration unit is replaced with a new fenestration product, including sash and
glazing, the replacement fenestration unit shall meet the applicable requirements for
U-factor in Table 402.3.7.
Exceptions:
1. Replacement skylights shall have a maximum U-factor for 0.60 when installed
in all sub-climate zones except for 2.1.
2. For buildings constructed in conformance with an energy code as required by
th
State of Texas Senate Bill Number 5, 77 Legislature, replacement fenestration
units may comply with the original construction documents or applicable U-
factor in Table 402.1.1.
13. Add Section 402.3.7 Prescriptive Path for Additions, to read as follows:
Section 402.3.7 Prescriptive Path for Additions.
As an alternative to demonstrating
compliance with 404, additions with a conditioned floor area less than 500 square feet
(46.5 m2) to existing single-family residential buildings and structures shall meet the
prescriptive envelope component criteria in Table 402.3.7 for the sub climate zone
applicable to the location. The U-factor of each individual fenestration product
(windows, doors and skylights) shall be used to calculate and area-weighted average
fenestration product U-factor for the addition, which shall not exceed the applicable
listed values in Table 402.3.7. For additions, other than sunroom additions, the total
area of fenestration products shall not exceed 40 percent of the gross wall and roof
area of the addition. The R-values for opaque thermal envelope components shall be
equal to or greater than the applicable listed values in Table 402.3.7.
Conditioned sunroom additions shall maintain thermal isolation, and shall not be used
as kitchens or sleeping rooms.
14. For Coppell’s sub-climate zones 3.2, the combined solar heat gain coefficient (the
area weighted average) of all glazed fenestration products used in additions and as
replacement windows in accordance with this section shall not exceed 0.40.
15. Add Table 402.3.7 PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA
ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING
DETACHED ONE- AND TWO-FAMILY DWELLINGS to read as follows:
Table 402.3.7 PRESCRIPTIVE ENVELOPE COMPONENT CRITERIA
ADDITIONS TO AND REPLACEMENT WINDOWS FOR EXISTING
d
DETACHED ONE- AND TWO-FAMILY DWELLINGS
MAXIMUM MINIMUM
Crawl
SUB Ceiling Basement Slab space
R-wall perimeter
CLIMATE Fenestration Wall R-Floor wall R-
a, e e b
ZONES U-factor valuevalueR-value R-valueR-value value
0.50
2.2, 3.1,
R-19 R-8 R-0 R-10
R-30 R-13
3.2, 3.3
and 3.4
“Ceiling R-value” shall be required for flat or inclined (cathedral) ceilings. Floors over
a.
outside air shall meet “Ceiling R-value” requirements.
Basement wall insulation to be installed in accordance with Section 402.2.6.
b.
“Crawl space wall R-value” shall apply to unventilated crawl spaces only. Crawl space
c.
insulation shall be installed in accordance with Section 402.2.8.
Sunroom additions shall be required to have a maximum fenestration U-factor of 0.5. in
d.
all sub climate zones except sub climate zone 2.1. In all sub climate zones, the minimum
ceiling R-value for sunroom additions shall be R-19 and the minimum wall R-value shall
be R-13.
16. Add Section 402.2.11, Insulation Installed in Walls, to read as follows:
Section 402.2.11. Insulation Installed in Walls.
Insulation batts installed in walls
shall be totally surrounded by an enclosure on all sides consisting of framing lumber,
gypsum, sheathing, wood structural panel sheathing or other equivalent material
approved by the Building Official.
17. Amend Section 402.5, Moisture Control (Mandatory), to read as follows:
Section 402.5: Moisture Control (Mandatory).
The building design shall not create
conditions of accelerated deterioration from moisture condensation. Above-grade
frame walls, floors and ceilings not ventilated to allow moisture to escape shall be
provided with an approved vapor retarder. The vapor retarder shall be installed on
the warm-in-winter side of the thermal insulation.
Exceptions:
1.In construction where moisture or its freezing will not damage the materials.
2.Frame walls, floors and ceilings in jurisdictions in Zones 1, 2, 3, 4A and 4B
(Crawl space vapor retarders are not exempted.)
3.Where other approved means to avoid condensation are provided.
18. Amend the exception to Section 403.2.1., Insulation to read as follows:
Section 403.2.1. Insulation.
Exceptions:
1.Ducts or portions thereof located completely inside the building thermal
envelope.
2.Supply and return ducts can be insulated to a minimum of R-6, if the efficiency
of the cooling equipment is upgraded to one SEER point above the NAECA
(National Appliance Energy Conservation Act) Standard.
19. Add Section 501.3. Compliance Software Tools, to read as follows:
Section 501.3. Compliance Software Tools.
Software tools used to demonstrate
energy code compliance that are deemed acceptable by the Building Official may
only utilize the energy chapter of the 2006 International Energy Conservation Code or
the 2004 Edition of AHSRAE 90.1 Energy Standard for Buildings Except Low-rise
Residential Buildings when code edition and/or standard selection is available.
20. Amend Section 502.4.6 Vestibules, by adding exception #7 to read as follows:
Section 502.4.6 Vestibules
, exception:
7. Doors in buildings less than 4 stories above grade.
21. Amend Section 502.5. Moisture Control (Mandatory), to read as follows:
Section 502.5: Moisture Control (Mandatory).
All framed walls, floors and
ceilings not ventilated to allow moisture to escape shall be provided with an approved
-11 2
vapor retarder having a permeance rating of 1 perm (5.7 x 10kg/Pa*s*m) or less
when tested in accordance with the desiccant method using Procedure A of ASTME
96. The vapor retarder shall be installed on the warm-in-winter side of the thermal
insulation.
Exceptions:
1.In construction where moisture or its freezing will not damage the
materials.
2.Where other approved means to avoid condensation in unventilated framed
wall, floor, roof and ceiling cavities are provided.
22. Amend Section 505.2.1 Interior Lighting Controls, to read as follows:
Section 505.2.1 Interior Lighting Controls.
Each area enclosed by walls or floor-
to-ceiling partitions shall have at least one manual control for the lighting serving that
area. The required controls shall be located within the area served by the controls or
be a remote switch that identifies the lights served and their status. Each control
device shall control a maximum of 2,500 square feet (232.26 square meters) of floor
area for a space 10,000 square feet (929.03 square meters) or less and a maximum of
10,000 square feet (929.03 square meters) for a space greater than 10,000 square feet
(929.03 square meters).”
SECTION 2.
If any section, subsection, paragraph, sentence, phrase or work in this
ordinance, or application thereof to any person or circumstance is held invalid by any
court of competent jurisdiction, such holding shall not affect the validity of the remaining
portions of this ordinance, and the City Council of the City of Coppell, Texas hereby
declares it would have enacted such remaining portions despite any such invalidity.
SECTION 3.
That the repeal of any ordinance or any portion thereof by the
preceding sections shall not affect or impair any act done or right vested or accrued or
any proceeding, suit or prosecution had or commenced in any cause before such repeal
shall take effect; but every such act done, or right vested or accrued, or proceedings, suit
or prosecution had or commenced shall remain in full force and effect to all intents or
purposes as if such ordinance or part thereof so repealed shall remain in force.
SECTION 4. That any person, firm or corporation violating any of the provisions of
this ordinance or the Code of Ordinances as amended hereby, shall be guilty of a
misdemeanor and upon conviction in the Municipal Court of the City ofCoppell, Texas,
shall be subject to a fine not to exceed the sum of Five Hundred Dollars ($500.00) for
each offense, except where a different penalty has been established by State law for such
offense, the penalty shall be that fixed by State law, and for any offense which is a
violation of any provision of law that governs fire safety, zoning or public health and
sanitation, including dumping of refuse, the penalty shall be fine not to exceed the sum of
Two Thousand Dollars ($2,000.00) for each offense; and each and every day such
offense is continued shall constitute a new and separate offense.
SECTION 5. That this ordinance shall become effective immediately from and after
its passage and the publication of the caption, as the law and charter in such cases
provide.
ASSED by the City Council of CoppeD, Texas, this the 24f.1!-.
, 2007.
ATTEST:
TO FORM: