AN ORDINANCE OF THE CITY OF LAWRENCE, KANSAS, REPEALING EXISTING CHAPTER V, ARTICLE 8 OF THE CODE OF THE CITY OF LAWRENCE, 2011 EDITION, AND AMENDMENTS THERETO, REPEALING ORDINANCE NO. 8585, AND ENACTING, IN THEIR PLACE, CHAPTER V, ARTICLE 8 OF THE CODE OF THE CITY OF LAWRENCE, KANSAS, 2011 EDITION, AND AMENDMENTS THERETO, WHICH ADOPTS AND INCORPORATES BY REFERENCE THE 2012 INTERNATIONAL ENERGY CONSERVATION CODE, REGULATING BUILDING AND CONSTRUCTION WITHIN THE CITY OF LAWRENCE, KANSAS.
BE IT ORDAINED BY THE GOVERNING BODY OF THE CITY OF LAWRENCE, KANSAS:
SECTION 1. Existing Chapter V, Article 8, of the Code of the City of Lawrence, Kansas, 2011 Edition, and amendments thereto, and City of Lawrence, Kan., Ord. No. 8585 (Nov. 2, 2010), are hereby repealed in their entirety, it being the intent of the Governing Body that Section 2 of this Ordinance supersede them.
SECTION 2. The Code of the City of Lawrence, Kansas, 2011 Edition, and amendments thereto, is hereby amended by enacting Chapter V, Article 8, which reads as follows:
ARTICLE 8. ENERGY CONSERVATION CODE
5-801 ENERGY CONSERVATION CODE ADOPTED AND INCORPORATED.
The 2012 International Energy Conservation Code, published by the International Code Council, Inc., other than those portions hereinafter specifically deleted, modified, or amended, is hereby adopted as the City's Energy Code and is incorporated herein by reference as if set forth in full.
5-802 OFFICIAL COPY.
Not less than one (1) copy of the 2012 International Energy Conservation Code shall be marked or stamped "OFFICIAL COPY AS INCORPORATED BY ORDINANCE No. 8799," with all sections or portions deleted, modified, or amended clearly marked as such, and to which one (1) copy of this ordinance shall be affixed, shall be filed with the City Clerk, shall be open to inspection, and shall be available to the public during reasonable business hours. Additional official copies shall, at the cost of the City, be supplied to those officials and agencies charged with enforcement of the City's Energy Conservation Code.
5-803 AMENDMENTS TO THE 2012 INTERNATIONAL ENERGY CONSERVATION CODE.
The 2012 International Energy Conservation Code is amended as set forth in the succeeding sections of this Article. These amendments shall not serve to delete, modify, or amend any discretely numbered section or subsection of the 2012 International Energy Conservation Code, unless the section or subsection is specifically identified as being deleted, modified, or amended.
5-804 Table R402.1.1 of the 2012 International Energy Conservation Code is hereby amended to read as follows:
TABLE R402.1.1
INSULATION AND FENESTRATION REQUIREMENTS BY COMPONENT
|
CLIMATE ZONE |
FENESTRATION U-FACTORb |
SKYLIGHTb U-FACTOR |
GLAZED FENSTRATION SHGC |
CEILING R-VALUE |
WOOD FRAMED WALL |
MASS WALL R-VALUESi |
FLOOR R-VALUE |
BASEMENTc WALL R-VALUE |
SLABd R-VALUE AND DEPTHhj |
CRAWLc SPACE WALL R-VALUE |
|
1 |
NR |
0.75 |
0.25 |
30 |
13 |
¾ |
13 |
0 |
0 |
0 |
|
2 |
0.40 |
0.65 |
0.25 |
38 |
13 |
4/6 |
13 |
0 |
0 |
0 |
|
3 |
0.35 |
0.55 |
0.25 |
38 |
20 or13+5h |
8/13 |
19 |
5/13f |
0 |
5/13 |
|
4 except Marine |
0.35 |
0.55 |
0.40 |
49 |
|
8/13 |
19 |
10/13 |
10, 2 ft |
10/13 |
|
5 and Marine 4 |
0.32 |
0.55 |
NR |
49 |
20 or 13+5h |
13/17 |
30g |
15/19 |
10, 2 ft |
15/19 |
|
6 |
0.32 |
0.55 |
NR |
49 |
20+5 or 13+10h |
15/20 |
30g |
15/19 |
10, 4 ft |
15/19 |
|
7 and 8 |
0.32 |
0.55 |
NR |
38 |
20+5 or 13+10h |
19/21 |
30g |
15/19 |
10, 4 ft |
15/19 |
a. R-values are minimums. U-factors and SHGC are maximums. When insulation is installed in a cavity which is less
than the label or design thickness of the insulation, the installed R-value of the insulation shall not be less than the
R-value specified in the table.
b. The fenestration U-factor column excludes skylights. The SHGC column applies to all glazed fenestration.
Exception: Skylights may be excluded from glazed fenestration SHGC requirements in Climate Zones 1 through 3 where the SHGC for such skylights does not exceed 0.30.
c. “15/19” means R-15 continuous insulation on the interior or exterior of the home or R-19 cavity insulation at the interior of the basement wall. “15/19” shall be permitted to be met with R-13 cavity insulation on the interior of the basement wall plus R-5 continuous insulation on the interior or exterior of the home. “10/13” means R-10 continuous insulation on the interior or exterior of the home or R-13 cavity insulation at the interior of the basement wall.
d. R-5 shall be added to the required slab edge R-values for heated slabs. Insulation depth shall be the depth of the footing or 2 feet, whichever is less in Zones 1 through 3 for heated slabs.
e. There are no SHGC requirements in the Marine Zone.
f. Basement wall insulation is not required in warm-humid locations as defined by Figure N1101.10 and Table N1101.10.
g. Or insulation sufficient to fill the framing cavity, R-19 minimum.
h. First value is cavity insulation, second is continuous insulation or insulated siding, so “13 + 5” means R-13 cavity insulation plus R-5 continuous insulation or insulated siding. If structural sheathing covers 40 percent or less of the exterior, continuous insulation R-value shall be permitted to be reduced by no more than R-3 in the locations where structural sheathing is used to maintain a consistent total sheathing thickness.
i. The second R-value applies when more than half the insulation is on the interior of the mass wall.
j. Slab edge insulation may be eliminated for slab on grade floors when heating systems efficiency rating is 90% or better.
k. R-19 13+5 Effective January 1, 2014.
5-805 Section R402.2.8 of the 2012 International Residential Code is hereby amended to read as follows:
R402.2.8
Basement walls. Walls Exterior walls
associated with conditioned basements shall be insulated from the top of the
basement wall down to 10 feet (3048 mm) below grade or to the basement floor,
whichever is less. Walls associated with unconditioned basements shall meet
this requirement unless the floor overhead is insulated in accordance with
Sections N1102.1 and N1102.2.6.
Exception: Basement walls that are otherwise exposed shall be insulated from the top of the basement wall down to 3 feet (914mm) below grade or the basement floor, whichever is less.
5-806 Section R402.4.1.2 of the 2012 International Residential Code is hereby amended to read as follows:
R402.4.1.2
Testing. The building or dwelling unit shall be tested and verified as
having an air leakage rate not exceeding 5 air changes per hour in Climate Zones 1 and 2, and 3 air changes per hour in Climate
Zones 3 through 8. Testing shall be
conducted with a blower door at a pressure of 0.2 inches w.g. (50 Pascals).
Where required by the code official, testing shall be conducted by an approved
third party. A written report of the results of the test shall be signed by the
party conducting the test and provided to the code official. Testing shall be
performed at any time after creation of all penetrations of the building
thermal envelope.
During testing:
1. Exterior windows and doors, fireplace and stove doors shall be closed, but not sealed, beyond the intended weather-stripping or other infiltration control measures;
2. Dampers including exhaust, intake, makeup air, backdraft and flue dampers shall be closed, but not sealed beyond intended infiltration control measures;
3. Interior doors, if installed at the time of the test, shall be open;
4. Exterior doors for continuous ventilation systems and heat recovery ventilators shall be closed and sealed;
5. Heating and cooling systems, if installed at the time of the test, shall be turned off; and
6. Supply and return registers, if installed at the time of the test, shall be fully open.
5-807 The 2012 International Energy Conservation Code is hereby amended by adding Section R402.4.1.3, which reads as follows:
R402.4.1.2.1 Amended air changes timetable. Effective January 1, 2014, the air leakage rate shall not exceed 4 air changes per hour. Effective January 1, 2015, the air leakage rate shall not exceed 3 air changes per hour.
5-808 Sections R403.2.1 and R403.2.2 of the 2012 International Residential Code are hereby amended to read as follows:
R403.2.1 Insulation (Prescriptive). Supply
and return ducts outside the thermal envelope in attics
shall be insulated to a minimum of R-8. All other ducts shall be insulated
to a minimum of R-6.
Exception: Ducts or portions
thereof located completely inside the building thermal envelope.
R403.2.2 Sealing (Mandatory). Ducts, air handlers, and filter boxes shall be sealed. Joints and seams shall comply with either the International Mechanical Code or International Residential Code, as applicable.
Exceptions:
1. Air-impermeable spray foam products shall be permitted to be applied without additional joint seals.
2. Where a duct connection is made that is partially inaccessible, three screws or rivets shall be equally spaced on the exposed portion of the joint so as to prevent a hinge effect.
3. Continuously welded and locking-type longitudinal joints and seams in ducts operating at static pressures less than 2 inches of water column (500 Pa) pressure classification shall not require additional closure systems.
Duct tightness shall be verified by either of the following:
1. Post Construction test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 square feet (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the entire system, including the manufacturer’s air handler enclosure. All register boots shall be taped or otherwise sealed during the test.
2. Rough-in test: Total leakage shall be less than or equal to 4 cfm (113.3 L/min) per 100 ft2 (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the system, including the manufacturer’s air handler enclosure. All registers shall be taped or otherwise sealed during the test. If the air handler is not installed at the time of the test, total leakage shall be less than or equal to 3 cfm (85 L/min) per 100 square feet (9.29 m2) of conditioned floor area.
3. Post construction test: Leakage to outdoors shall be less than or equal to 4 cfm (113.3 L/min) per 100 ft2 (9.29 m2) of conditioned floor area when tested at a pressure differential of 0.1 inches w.g. (25 Pa) across the system, including the manufacturer’s air handler enclosure. All registers shall be taped or otherwise sealed during the test.
Exception: The total leakage test is not required for ducts and air handlers located entirely within the building thermal envelope.
5-809 Section R403.2.3 of the 2012 International Energy Conservation Code is hereby deleted.
5-810 Section R403.4.2 of the 2012 International Energy Conservation Code is hereby amended to read as follows:
R403.4.2 Hot water pipe insulation
(Prescriptive). Insulation
for hot water pipe with a minimum thermal resistance (R-value) of R-3 R-2 shall be applied to the following:
1. Piping
larger than 3/4-inch nominal diameter.
2. Piping
serving more than one dwelling unit.
3. Piping from the water heater to kitchen outlets.
4. Piping located outside the conditioned space.
5. Piping from the water heater to a distribution manifold.
6. Piping located under a floor slab located less than 5 feet from an un-insulated slab edge.
7. Buried piping.
8. Supply and return piping in recirculation systems other than demand recirculation systems.
9. Piping
with run lengths greater than the maximum run lengths for the nominal pipe
diameter given in Table N1103.4.2.
All remaining piping shall be insulated
to at least R-3 or meet the run length requirements of Table N1103.4.2.
5-811 The 2012 International Energy Conservation Code is hereby amended by adding Section R403.6.1, which reads as follows:
R403.6.1 Equipment performance requirements. Equipment shall meet the minimum efficiency requirements mandated by federal government minimum efficiency standards, when tested and rated in accordance with the applicable test procedure. The efficiency shall be verified through certification under an approved certification program or, if no certification program exists, the equipment efficiency ratings shall be supported by data furnished by the manufacturer. Where multiple rating conditions or performance requirements are provided, the equipment shall satisfy all stated requirements. Where components, such as indoor or outdoor coils, from different manufacturers are used, calculations and supporting data shall be furnished by the designer that demonstrates that the combined efficiency of the specified components meets the requirements herein.
5-812 Section R404.1 of the 2012 International Energy Conservation Code is hereby amended to read as follows:
R404.1 Lighting
equipment (Mandatory). A minimum of 75 50 percent of the lamps in
permanently installed lighting fixtures shall be high-efficacy lamps or a
minimum of 75 50 percent of the permanently installed lighting
fixtures shall contain only high-efficacy lamps.
Exception: Low-voltage lighting shall not be required to utilize high-efficiency lamps.
SECTION 3. If any section, clause, sentence, or phrase of this ordinance is found to be unconstitutional or is otherwise held invalid by any court of competent jurisdiction, it shall not affect the validity of any remaining parts of this ordinance.
SECTION 4. After adoption and publication as provided by law, this ordinance shall be in full force and effect, commencing March 1, 2013.
ADOPTED by the Governing Body of the City of Lawrence, Kansas, this ____ day of December, 2012.
APPROVED:
___________________________________
Robert J. Schumm
Mayor
ATTEST:
__________________________________
Jonathan M. Douglass
City Clerk
APPROVED AS TO FORM AND LEGALITY:
__________________________________
Toni R. Wheeler
City Attorney
*****
NOTICE TO PUBLISHER
Publish one time and return one Proof of Publication to the City Clerk and one to the City Attorney.