2016-298ORDINANCE NO. 20'1,6-298
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SEC" ON 1, Chapter 28, Section 28-253 of the Code or Ordinances of the City of Denton is hereby amended
in its entirety to read as follows:
Sec. 28-253. Adoption of the energy conservation code.
The International Energy Conservation Code, 2015 edition as published by the International Code
Council is hereby adopted and designated as the energy conservation code for the city subject to the deletions
and amendments enumerated in section 28-254. A copy of this code shall be maintained in the Office of the
City Secretary and be available for public inspection.
SECTION 2.
(1) Section C102/102; add Section C102.1.2 and R102.1.2 to read as follows:
C102.1.2 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.
102.1.2 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. Regardless of
the program or the path to compliance, each 1- and 2 -family dwelling shall be tested for air and duct
leakage as prescribed in Section R402.4 and R403.3.3 respectively.
(2) Section C202 and R202; add the following definition:
PROJECTION FACTOR. The ratio of the horizontal depth of the overhang, eave or permanently
attached shading device, divided by the distance measured vertically from the bottom of the
fenestration glazing to the underside of the overhang, eave or permanently attached shading device.
(3) Section 8202; add the following definition:
DYNAMIC GLAZING. Any fenestration product that has the fully reversible ability to change it
performance properties, including U -factor, solar heat gain coefficient (SHGC), or visible
transmittance (VT).
(4) Section R402.3.2 Glazed fenestration SHGC; amend by adding a paragraph and table following
the exception to read as follows:
Where vertical fenestration is shaded by an overhang, eave, or permanently attached shading device,
the SHGC required in Table R402.1.2 shall be reduced by using the multipliers in Table R402.3,2
SHGC Multipliers for Permanent Projections.
Table R402.3.2 SHGC Multipliers for Permanent Projections R
Projection
SHGC Multiplier
SHGC Multiplier
Factor
(all Other Orientation)
(North Oriented)
0-0.10
1.00
1.00
>0.10 - 0.20
0.91
0.95
>0.20 - 0.30
0.82
0.91
>0.30 - 0.40
0.74
0.87
>0.40 - 0.50
0.67
0.84
>0.50 - 0.60
0.61
0.81
>0.60 - 0.70
0.56
>0.70 - 0.80
0.51
0.76
>0.80 - 0.90
0.47
0.75
>0.90 - 1.00
0.44
0.73
North oriented means within 45 degrees of true north.
(5) Section R402.4.1.2 Testing; Add a last paragraph to read as follows:
Mandatory testing shall only be performed by individuals that are certified to perform air infiltration
testing certified by national or state organizations as approved by the building official. The certified
individuals must be an independent third -party entity, and may not be employed; or have any
financial interest in the company that constructs the structure,
(6) Section R402.4.1.2; add the following exception.
Structures meeting limitations I thru 5 below as well as all of the requirements under Option I or
Option 2 of table 402.4.1 shall be deemed to be in compliance with this code.
1. Limited to one- and two- family residences with a conditioned floor area between 1,000 and
6,000 square feet.
2. Limited to one- and two-family residences containing between 2 to 6 bedrooms,
3. Assumes all ductwork and mechanical equipment is located in the unconditioned attic.
4. Assumes typical wood framing in the walls and roof.
5. Assumes one of the following heating/cooling systems:
a. All electric system with a heat pump for heating, or
b. A system with electric cooling and natural gas heating,
(Note: electric resistance strip heating does not qualify for this tradeoff.)
Table 402.4.1
Envelope Component
Option #1
Option #2
R402.4 Air Leakage
< 4ACH50
< 4ACH50
Wall Insulation R -value
R13 + R3b
R13 + R3b
Fenestration U -factor
< 0.32
< 0.32
Fenestration SHGC
< 0.25
< 0.25
Ceiling R -value
> R49
> R49
Duct Insulation R -value
R8
R6
Radiant Barrier Required
No
Yes
a Except for the values listed in the table,
all other mandatory code provisions
are applicable.
b The first value listed is the R -value of cavity insulation, the second value is the R -value of the
continuous insulation or insulated siding.
(7) R403.3.3 Duct Testing (Mandatory);Add a last paragraph to read as follows:
Mandatory testing shall only be performed by individuals that are certified to perform duct testing
leakage testing certified by national or state organizations as approved by the building official. The
certified individuals must be an independent third -party entity, and may not be employed; or have
any financial interest in the company that constructs the structure.
(8) Section C402.2.7/R402.2; Add Section C402.2.9 and R402.2.14 to read as follows:
Section C402.2.7/R402.2.14 Insulation installed in walls. To insure that insulation remains in
place, insulation installed in walls shall be totally enclosed on all sides consisting of framing lumber,
gypsum, sheathing, wood structural panel sheathing, or other equivalent material approved by the
building official.
(9) Section 8405.4.2.1 add the following:
5. Name, phone number, and certification number of the individual completing the compliance
report. The preparer of the compliance report shall possess one of the following certifications: ICC
(International Code Council) Commercial Energy Plans Examiner, ICC (International Code
Council) Residential Energy Inspector/Plans Examiner, HERS (Home Energy Rating) rater, or may
be a Texas Registered Architect or Texas Licensed Professional Engineer.
(10) Section R405.4.2.2 add the following:
4. (Remainder unchanged)... attached to a City of Denton Energy Compliance form.
(11) Section 405.6.2; add the following sentence to the end of paragraph:
Acceptable performance software simulation tools may include, but are not limited to,
REM RateTN1, Energy Gauge and I0. Other performance software programs accredited
by RESNET BESTEST and having the ability to provide a report as outlined in R405.4.2
may also be deemed acceptable performance simulation programs and may be considered
by the building official.
(12) TABLE R406.4 MAXIMUM ENERGY RATING INDEX; amend to read as follows:
s table is
The table
This table is
MAXIMUM ENERGY RATING INDEX
CLIMATE ZONEENERGY RATING INDEX
.... _. _._ ........ .._
3 65
tive until August 31, 2019,
TABLE 8406.42
MAXIMUM ENERGY RATING INDEX
CLIMATE ZONE ENERGY RATING INDEX
3 63
ive from September 1, 2019 to August 31, 2022.
TABLE R406.43
MAXIMUM ENERGY RATING INDEX
CLIMATE ZONE
3
ve on or after September 1, 2022.
ENERGY RATING INDEX
59
(13) C407.4.2 Additional Documentation; add thefollowing.,
6. Compliance reports, all additional documentation, and a final compliance and commissioning
verification report shall be prepared by a qualified third party energy verifier. The third party energy
verifier shall include his name, phone number, and certification number on each document provided
to the City. The third party verifier shall be certified with one of the following certifications: ICC
(International Code Council) Commercial Energy Plans Examiner, ICC (International Code
Council) Commercial Energy Inspector, HERS (Home Energy Rating) rater, or may be a Texas
Registered Architect or Texas Licensed Professional Engineer.
SECTION 3. If any provision of this ordinance or the application thereof to any person or circumstance is
held invalid, such invalidity shall not affect any other provision or application, and to this end the provisions of this
ordinance are severable.
SECTION 4. That all provisions of the ordinances of the City of Denton in conflict with the provision of
this ordinance are hereby repealed, and all other provisions of the ordinances of the City or Denton, not in conflict
with the provision of this ordinance, shall remain in full force and effect.
SECTION 5. That any person violating any provision of this ordinance shall, upon conviction, be fined a
sum not to exceed two thousand dollars ($2,000.00). Each day that a provision of this Ordinance is violated shall
constitute a separate and distinct offence.
SECTION 6. That this ordinance shall become effective November 1, 2016 and the City secretary is hereby
directed to cause the caption of this ordinance to be published twice in the Denton Record Chronicle, the official
newspaper of the City of Denton, Texas, within ten (10) days of the date of its passage.
PASSED AND APPROVED this, the �� ....__,eday o 11V, 2016
CHRIS WATTS, MAYOR
ATTEST:
JENNIFER WALTERS, CITY SECRETARY
BY;
APPR )VIED AS TO LEGAL FORM:
ANITA BURGESS, CITY ATTORNEY