HomeMy WebLinkAboutOrdinance - 2020-O0019 - Adopting The 2015 International Energy Conservation Code - 02/11/2020 First Reading Second Reading
January 28, 2020 February 11, 2020
Item No. 7.15 Item No. 7.11
ORDINANCE NO. _2020-00019
AN ORDINANCE AMENDING CHAPTER 28 OF THE CODE OF ORDINANCES OF
THE CITY OF LUBBOCK, TEXAS WITH REGARD TO ADOPTION OF THE 2015
INTERNATIONAL ENERGY CONSERVATION CODE AND PROVIDING FOR
CERTAIN AMENDMENTS THERETO TO MEET LOCAL CONDITIONS; PROVIDING
A PENALTY; PROVIDING A SAVINGS CLAUSE; AND PROVIDING FOR
PUBLICATION.
WHEREAS the City Council of the City of Lubbock, Texas deems it in the best interest of
the health, safety, and welfare of the citizens of Lubbock to adopt the 2015 International
Energy Conservation Code for the City of Lubbock with certain amendments thereto to meet
local conditions;NOW THEREFORE:
BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF LUBBOCK:
SECTION 1. THAT Chapter 28, Article 28.16 of the Code of Ordinances of the City of
Lubbock is hereby amended as follows:
ARTICLE 28.16 INTERNATIONAL ENERGY CONSERVATION CODE
See. 28.16.001 Adopted
The 2015 edition of the International Energy Conservation Code, as published by the
International Code Council, Inc., as hereinafter amended, is hereby adopted as the
energy conservation code of the City of Lubbock, Texas. A copy of said code is
attached hereto and incorporated herein as though set out herein in detail. References
to the energy conservation code or the energy code in this chapter or to "this code"
within this article shall mean and refer to the 2015 edition of the International Energy
Conservation Code as amended herein. One copy of the 2015 International Energy
Conservation Code shall be filed with the city secretary and a copy shall be maintained
in the office of the city building official.All such copies,with the amendments thereto,
shall be open to public inspection during the usual hours of business of the offices
where they are maintained.
Sec. 28.16.002 Coordination of administrative provisions
The administrative provisions contained in chapter 28,articles 28.01 through 28.08 of
this Code of Ordinances are applicable to this article; however, for purposes of
administering provisions related more specifically to the regulation of energy
conservation systems design and installation, these supplemental administrative
provisions have been provided. Except as amended or supplemented within sections
28.16.002 and 28.16.003, the entire text of chapter 1 of the 2015 International Energy
Conservation Code is deemed to be incorporated herein as though set out herein in
detail.Where a conflict arises between a provision contained within sections 28.16.002
and
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28.16.003 and articles 28.01 through 28.08 of this Code of Ordinances, it is the intent
that the more specific govern,as determined by the building official.
Sec. 28.16.003 Supplemental administrative amendments
(a) Title. Sections C101.1 and R101.1 are hereby amended to read as follows:
C101.1 Title. This code shall be known as the International Energy
Conservation Code of the City of Lubbock,Texas and shall be cited as such. It
is referred to herein as"this code."
R101.1 Title. This code shall be known as the International Energy
Conservation Code of the City of Lubbock,Texas and shall be cited as such. It
is referred to herein as"this code."
(b) Administrative amendments and cross-references to articles 28.01 throu h 28.08.
The following administrative provisions within chapter 1 of the International
Energy Conservation Code are hereby stricken, and the corresponding
provisions within articles 28.01 through 28.08 of this Code of Ordinances shall
govern, as indicated in table 28.16.003 below:
TABLE 28.16.003
ADMINISTRATIVE PROVISIONS CROSS-REFERENCE
2015 International Section Refer to Lubbock
Energy Cade Section Heading/Subject Code of
Ordinances
Chapter Section
C107.5 and R107.5 Fee refunds 28.05.109
C108.4 and R108.4 Violation penalties 28.02.006
C108 and R108 Stop work orders 28.02.007
C 109.1 through C 109.3 Means of appeal 2.03.491 through
R109.1 through R109.3 2.03.495
c) Exempt buildings. - Sections C501 and R501 are hereby amended to read as
follows:
C501.6 and R501.6 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
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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 or the Keeper of the National Register of Historic
Places, are exempt from this code.
C501.6.1 Hospitals and research laboratories. Hospitals licensed by the State
Department of Health Services and research laboratories containing fume
hoods and other HVAC systems for the protection of occupants shall be exempt
from the provisions of this code.
Exception: Non-residential buildings otherwise exempted by Sections C501.6
or C501.6.1 above are not exempt from the service water heating and electrical
lighting provisions of this code.
Sec. 28.16.004 Technical amendments -Commercial
(a) Interior design conditions. -C302.1 is hereby deleted in its entirety.
(b) Minimum skylight fenestration area. - C402.4.2 is hereby amended with
additional text that reads:
The minimum skylight fenestration area is not a mandatory guideline but
more as a recommendation. Decisions for use shall be determined by the
design professional or acting representative.
(c) Deadband. - C403.2.4.1.2 is hereby amended to read:
Where used to control both heating and cooling, zone thermostatic controls
shall be capable of providing a temperature range or deadband of at least 2°F
(2.8°C) within which the supply of heating and cooling energy to the zone is
capable of being shut off or reduced to a minimum.
(d) Economizer fault detection and diagnostics(FDDI - C403.2.4.7 is hereby
deleted in its entirety.
(e) Energy recovery ventilation systems. - C403.2.7 is hereby amended to read:
Where the supply airflow rate of a fan system exceeds the values specified in
Tables C403.2.7(1) and C403.2.7(2), the system shall include an energy
recovery system. The energy recovery system shall have the capability to
provide a change in the enthalpy of the outdoor air supply of not less than 50
percent of the difference between the outdoor air and return air enthalpies, at
design conditions. Where an air economizer is installed, the energy recovery
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system shall include a bypass or controls which permit operation of the
economizer as required by Section C403.3.
(f) Duct and plenum insulation and sealin&- C403.2.9 is hereby amended to read:
Supply and return air ducts and plenums shall be insulated with a minimum
of R-6 insulation where located in unconditioned spaces and where located
outside the building.
Exceptions:
1. Where located within equipment.
2. Where the design temperature difference between the interior and
exterior of the duct or plenum is not greater than 15°F (8°C).
Ducts, air handlers and filter boxes shall be sealed. Joints and seams shall
comply with Section 603.9 of the International Mechanical Code
(g) Protection of piping insulation. - C403.2.10.1 is hereby deleted in its entirety.
(h) Mechanical systems commissioning and completion requirements. - C403.2.1 I is
hereby deleted in its entirety.
(i) Economizers (Prescriptive - C403.3 is hereby amended to read:
If a cooling system includes either an air or water economizer it shall comply
with Sections C403.3.1 through C403.3.4
Table C403.3(1)and Table C403.3(2) are hereby deleted in their entirety.
{j) Fan control. - C403.4.1 is hereby amended to read:
Controls shall be provided for fans in accordance with Sections C403.4.1.2
through C403.4.1.3.
Section C403.4.1.1 Fan airflow control and Table C403.4.1.1 are hereby
deleted in their entirety.
(k) Maximum allowable pipe leng1h method. - C404.5.1 is hereby deleted in its
entirety.
(1) Maximum allowable RiRe volume method. - C404.5.2 is hereby amended to read:
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The water volume in the piping shall be calculated in accordance with Section
C404.5.2.1. Water heaters, circulating water systems and heat trace
temperature maintenance systems shall be considered sources of heated water.
The volume from the nearest source of heated water to the termination of the
fixture supply pipe shall be as follows:
1. For all plumbing fixtures or plumbing appliances; not more than 0.5
gallon(1.89 L).
(m) Circulation systems. - C404.5.1 is hereby amended to read:
Heated-water circulation systems shall be provided with a circulation pump.
The system return pipe shall be a dedicated return pipe or a cold water supply
pipe. Gravity and thereto-syphon circulation systems shall be prohibited.
Circulation pump shall be controlled by a seven-day time clock,aqua stat, or a
combination of both devices.
(n) Lighting controls (Mandatory). - C405.2 is hereby amended to read:
Lighting systems shall be provided with controls as specified in Sections
C405.2.1, C405.2.2, C405.2.3, C405.2.4 and C405.2.5.
Exceptions: Lighting controls are not required for the following:
1. Areas designated as security or emergency areas that are required to
be continuously lighted.
2. Interior exit stairways, interior exit ramps and exit passageways.
3. Emergency egress lighting that is normally off.
4. Areas deemed by owner/operator to be a potential health, safety or
security issue.
(o) Occupant sensor controls. - C405.2.1 is hereby deleted in its entirety.
(p) Commissioning plan. - C408.2.1 is hereby deleted in its entirety.
(q) PreliminM commissioning report. - C408.2.4 is hereby deleted in its entirety.
(r) Acceptance of report. - C408.2.4.1 is hereby deleted in its entirety.
(s) Copy of re ort. - C408.2.4.2 is hereby deleted in its entirety.
(t) Functional testing. - C408.3.1 is hereby amended to read:
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Prior to passing final inspection provide evidence that the lighting control
systems have been tested to ensure that control hardware and software are
calibrated, adjusted, programmed and in proper working condition in
accordance with the construction documents and manufacturer's instructions.
Functional testing shall be in accordance with Sections C408.3.1.1 and
C408.3.1.2 for the applicable control type.
Sec. 28.16.005 Technical amendments—Residential
(a) Above code programs. - R102.1.1 is hereby amended to read:
The code official or other authority having jurisdiction shall be permitted to
deem a national, state or local energy-efficiency program to exceed the energy
efficiency required by this code. Buildings approved in writing by such an
energy-efficiency program shall be considered in compliance with this code.
(b) Information on construction documents. - R103.2 is hereby deleted in its entirety.
(c) Interior design conditions. - R302.1 is hereby deleted in its entirety.
(d) Table R402.1.2 Insulation and Fenestration Requirements by Component'-amend
subject portions of table relative to Climate Zone 3 to read:
Fenestration U-Factorb 0.501
Sk li htb U-Factor 0.65
Glazed Fenesration SHGCb.e 0.30
Ceiling R-Value 30
Wood Frame Wall R-Value 13
Mass Wall R-Value' 5/8
Floor R-Value 19
Basement' Wall R-Value 0
Slab' R-Value& Depth 0
Crawl Space'Wall R-Value 5/13
j. For impact rated fenestration complying with Section R301.2.1.2 of the International
Residential Code or Section 1609.1.2 of the International Building Code, the maximum U-
factor shall be 0.75 in Zone 2 and 0.65 in Zone 3.
(e) Table R402.l.4 Equivalent U-Factors'-amend subject portions of table relative to
Climate Zone 3 to read:
Fenestration U-Factor 0.50
Skylight U-Factor 0.65
Ceiling U-Factor 0.035
Frame Wall U-Factor 0.082
Mass Wall U-Factorb 0.141
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Floor U-Factor 0.047 _
Basement Wall U-Factor 0.360
Crawl Space Wall U-Factor 0.136
(f) Glazed fenestration SHGC exception. - R402.3.2.1 is hereby drafted to read:
In Climate Zones 1 through 4, permanently shaded vertical fenestration shall
be permitted to satisfy the SHGC requirements. The projection factor of an
overhang, eave, or permanently attached shading device shall be greater than
or equal to the value listed in Table 402.3.2.1 for the appropriate orientation.
The minimum projection shall extend beyond each side of the glazing a
minimum of 12 inches (0.3m). Each orientation shall be rounded to the
nearest cardinal orientation(+,'-45 degrees or 0.79 rad) for purposes of
calculations and demonstrating compliance.
Table R402.3.2.1
Minimum Projection Factor Required by Orientation for SHGC Exception
ORIENTATION PROJECTION FACTOR
North >=0.408
South >=0.20
East >=0.50
West >=0.50
a. For the north orientation,a vertical projection located on the west-edge of the fenestration
with equivalent PF>=0.15 shall also satisfy the minimum projection factor requirement.
Projection Factor -The ratio of the horizontal depth of an 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.
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(g) Air leakage. -R402.4 is hereby amended to read:
Air leakage. -- The building thermal envelope shall be constructed to limit air
leakage in accordance with the requirements of Sections R402.4.1 through
R402.4.4.
Exception: Dwelling units of R-2 occupancies and multiple single family
dwellings shall be permitted to comply with IECC Section C402.5.
(h) Testing. -R402.4.1.2 is hereby amended to read:
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 through
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8. Testing shall be conducted in accordance with ASTM E 779 or ASTM E
1827 and reported at a pressure of 0.2 inch w.g. (50 Pascals). 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.
6. Supply and return registers, if installed at the time of the test, shall be fully
open.
(i) Fireplaces. -R402.4.2 is hereby deleted in its entirety.
(j) Rooms containing fuel-burning appliances. - R402.4.4 is hereby deleted in its
entirety.
(k) Insulation (Prescriptive),.- R403.3.1 is hereby amended to read:
Supply and return ducts in attics shall be insulated to a minimum of R-6.
Supply and return ducts in other portions of the building shall be insulated to a
minimum of R-6.
(1) Duct testing(Mandatory). - R403.3.3 is hereby deleted in its entirety.
(m) Duct leakage (Prescriptive) - R403.3.4 is hereby deleted in its entirety.
(n) Circulation systems. - R403.5.1.1 is herby amended to read:
b
Heated water circulation systems shall be provided with a circulation pump.
The system return pipe shall be a dedicated return pipe or a cold water supply
pipe. Gravity and thermosyphon circulation systems shall be prohibited.
Circulation pump shall be controlled by a seven-day time clock, aqua stat, or a
combination of both devices.
(o) Covers. - R403.10.3 is hereby deleted in its entirety.
(p) Table R405.5.2(l) Specifications for the Standard Reference and Proposed
Designs—amend subject portions of table relative to referenced building
components to read:
BUILDING
STANDARD PROPOSED DESIGN COMPONENT REFERENCEDESIGN
Total areab= 15
percent of the
conditioned floor As proposed
area
Orientation:
equally As proposed
distributed to
four cardinal As proposed
compass
orientations
(N,E,S&W).
U-factor:as As proposed
specified in
Table R402.1.4 As proposed
Vertical fenestration
other than opaque SHGC: as
doors specified in
Table 8402.1.2
except that for
climates with no
requirement
(NR)SHGC=
0.40 shall be
used.
Interior shade
fraction: 0.92-
(0.21 xSHGC for
the standard
reference design)
External
shading: none
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Air leakage rate For residences that are not tested,the
of 5 air changes same air leakage rate as the standard
per hour in reference design.
climate zones 1 For tested residences,the measured
through 8 at a air exchange rates.
pressure of 0.2 The mechanical ventilation rateb
inches w.g(50 shall be in addition to the air leakage
Pa).The rate and shall be as proposed.
mechanical
ventilation rate
shall be in
addition to the
air leakage rate
and the same as
Air exchange rate in the proposed
design,but no
greater than 0.0 l
x CFA +7.5 x
(Nbr+ 1)
where:
CFA=
conditioned floor
area
Nb,=number of
bedrooms
Energy recovery
shall not be
assumed for
mechanical
ventilation.
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Fuel type: same
as proposed
design As proposed
Efficiencies:
Electric:air- As proposed
source heat
pump with As proposed
prevailing
federal As proposed
minimum
standards
Nonelectric
furnaces: natural
Heating systemsd. gas furnace with
prevailing
federal minimum
standards
Nonelectric
boilers: natural
gas boiler with
prevailing
federal minimum
standards
Capacity: sized
in accordance
with Section
R403.6
Fuel type:
Electric As proposed
Efficiency: In
accordance with As proposed }
' prevailing
Cooling systemsc r federal minimum
standards
Capacity: sized
in accordance
with section
8403.6
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Fuel type:same
as proposed As proposed
design
Efficiency: In Same as standard reference
accordance with Same as standard reference
prevailing
Service water heating• r,s federal minimum
standards
Use: gal/day
30+ 10xNk
Tank
temperature:
120°F
SECTION 2. THAT violation of any provision of this ordinance shall be deemed a
misdemeanor punishable as provided by Section 1.01.004 of the Code of Ordinances of the
City of Lubbock, Texas.
SECTION 3. THAT should any paragraph, sentence,clause,phrase or word of this Ordinance
be declared unconstitutional or invalid for any reason, the remainder of this Ordinance shall
not be affected thereby.
SECTION 4. THAT the City Secretary of the City of Lubbock, Texas, is hereby authorized
and directed to cause publication of the descriptive caption of this Ordnance as an alternative
(means of publication provided by law.
AND IT IS SO ORDERED.
Passed by the City Council on first reading this 21h day of January , 2020.
Passed by the City Council on second reading this 11th day February ,2020.
DAN POPE, MAY R
ATTEST:
ebe ca Garza, City pe4etary
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APPROVED AS TO CONTENT:
Greg Zielinski, ChieP Building Official
APPROVED AS TO FORM:
ms,Assistan -ity Attorney
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