2008 COA Energy Code

8/8/2019 2008 COA Energy Code

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ORDINANCE NO. 20071018-088AN ORDINANCE REPEALING AND REPLACING ARTICLE 12 OF CHAPTER25-12 OF THE CITY CODE (ENERGY CODE) TO ADOPT THE 2006 EDITIONOF THE INTERNATIONAL ENERGY CONSERVATION CODE ANDLOCALAMENDMENTS.

BE IT ORDAINED BY THE CITY COUNCIL OF THE CITY OF AUSTIN:

PART 1. Chapter 25-12 of the City Code is amended to repeal and replace Article 12(Energy Code) to read:ARTICLE 12. ENERGYCODE

25-12-261 ENERGY CODE(A) The Internat ional Energy and Conservat ion, 2006 Edition, pub lished by theInternational Code C ou ncil , Inc. (2006 Inte rnatio nal Energy C ode) is adoptedand incorporated into this section with the deletions and amendments inSubsections (B) and (C ) and Section 25-12-263 (Local Am endm ents to theEnergy Code).(B ) The follow ing provisions of the 2006 Internationa l Energy Code are deleted:

Section 201.3 Table 402.1.1Section 30 1.1 Table 402.1.3Figure 30 1.1 Section 402.5Tab le 301.1 Section 403.2.1Se ction 302.2 Sec tion 505.2.4(C) The fo l lowing definition in Section 202 (General Definitions) of the 2006International Energy Con servation Code is deleted:

VAPOR RETARDER(D) The city clerk shall file a copy of the 2006 Interna tional Energy C onservationCode with the official ordinanc es of the City.

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DRY (B) MOIST (A)

TABLE 301.1CLIMATE ZONES B Y COUNTY - TEXASZone 2

ANDERSONANGELINAARANSASATASCOSAAUSTINBANDERABASTROPBEEBELLBEXARBOSQUEBRAZORIABRAZOSBROOKSBURLESONCALDWELLCALHOUN

2.22.22.12.12.22.22.22.12.22.22.22.12.22.12.22.22.1

DEWITTDIMMITDUVALEDWARDSFALLSFAYETTEFORT BENDFREESTONEFRIOGALVESTONGOLIADGONZALESGRIMESGUADALUPEHARDINHARRISHAYS

2.12.12.12.22.22.22.22.22.12.12.12.22.22.22.22.22.2

JIM HOGGJIM WELLSKARNESKENEDYKINNEYKLEBERGLA SALLELAVACALEELEONLIBERTYLIMESTONELIVE OAKMADISONMATAGORDAMAVERICKMCLENNAN

2.12.12.12.12.22.12.12.22.22.22.22.22.12.22.12.12.2

ORANGEPOLKREALREFUGIOROBERTSONSAN JACINTOSAN PATRICIOSTARRTRAVISTRINITYTYLERUVALDEVALVERDEVICTORIAWALKERWALLERWASHINGTON

2.22.22.22.12.22.22.12.12.22.22.22.22.22.12.22.22.2

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C A M E R O NC H A M B E R SC H E R O K E EC O L O R A D OC O M A LC O R Y E L L

2 .1 H I D A L G O2. 2 H I L L

2 .1 M C M U L L E N2 .2 M E D I N A

2.2 H O U S T O N2 .2 J A C K S O N2.2 J A S P E R2.2 J E F F E R S O N

302.2 Exterior Design

2. 2 MILAM2. 12.22.2

2. 1 M O N T G O M E R Y 2 .22 .2 N E W T O N2 .2 N U E C E S

Conditions. The design

2.22.1

W E B BW H A R T O NWILLACYWIL L IA MS ONW I L S O NZAPATA

2.12.12.12.22.22.1

parameters in Table 302.2 shall be usedfo r calcu lations und er this code.TABLE 302,2CONDITION

Winter3, Design Dry-bulb ("F)Summer3, Design Dry-bulb (F)Summer3, Design Wet-bulb (F)Degree days heatingDegree days coolingClimate Zonec

V A L U E289974173528622.2

For SI: deg C=[(deg F)-32]/1.8.a. The outdoor design temperature shall be selected from the columns of 0.4 percent values forwin te r and 0.4 percent values fo r su mme r from t ab les in th e 2005 Handbook of

Fundam enta ls pub l ished by ASHRAE. Adjus tmen ts sha l l be permit ted to reflect localcl imates, which differ from the tabulated temperatu res, or local weather experiencedetermined by the b u i ld in g off ic ia l .

b. The degree-daysEnerj;

Keat ing (base 65OF) and cooling (base 65F) sha l l be selected from th e\y Conserva t ion Des ign Standards for New Sta te Bu i ld ing s ,

Office, State of Texas (effect ive Jun e 1 , 1989, as revised May 10Sta te En ergy Co nserva t ion1990 and February 1,

1993).c. The climate zone shal l be selected from Figure 302.1 (Climate Zones- Texas) of th is Code.

T A B L E 402.1.1I N S U L A T I O N AND FENESTRATION R E Q U I R E M E N T S BY COMPONENT3M A X I M U M

C L l M A T L i W I N D O WSU B TO W A L LC L I M A T E A R E AZ O N K R A T I O

15''O25301 5

~ > 0253015

,, 202530

3.2 1520

FENESTRATI ONJ/-KACTOR

0.800.750.650.510.650.550.510.460.650.550.510.460.600.51

S K Y L I G H TU-I:ACTORb

0.800.750.650.510.650.550.510.460.650.550.510.460.600.51

GLAZEDFE.NESTRAT1ONSHGC

0.350.350.350.350.400-400.350.350.400.400.350.350.400.40

Paj

C E I L I N GR - V A L U E1930303830383838303838383038

W O O DF R A M EW A L Lft-V A L U E d

1 113131313131316131313161313

FLOOR/ ( - VALUE1111111111111919191919191919

BASEMENTU ' A l 1K - V A L U E

00005688568866

S L A B C R A W Ltf-VALUE W A L L& D E P T H 1 K - V A L U

o ;o :o :o t0 (0 (0 10 10 (0 (0 10 100

SPACEL i

00

00

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3.3

4

2530152025301520253015202530

0.450.400.510.450.400.400-450.370.370.370.450.370.370.37

0.450.400.5 \0.450.400.400.450.370.370.370.450.370.370.37

0.400.350.400.400.400.40N RN RN RN RN RN RN RN R

3838303838383838383838383838

1616131316191313191913131919

1919191919191919193019191930

6677778881388813

000000

5 , 2 f t6, 2 ft6, 2 ft6, 2 ft5 , 2 f t6 , 2 f t6 , 2 f t6 . 2 f t

778888

1 11313201 1131320

For SI: 1 foot =304.8 mm.a . /^-values are minimums. f/-factors and SHGC are maximums. R-19 shall be permitted to becompressed into a 2 x 6 cavity.b . The fenestration ^/-factor column excludes skylights. The SHGC column applies to all glazed

fenestration.c . R-5 shall be added to the required slab edge /^-values fo r heated slabs.d . The total tf-value may be achieved with a combination of cavity and insulating sheathing thacovers 100%of the exterior wall.e . The wall insulat ion may be the sum of the two values where th e first value is the cavityinsulat ion and the second value is insult ing sheathing. T he combination of cavity insulation plusinsulat ing sheathing may be used where structural sheathing covers not more than 25% of theexterior wall area and insulating sheathing is not required where structural sheathing is used. I

s t ructural sheathing covers more than 25% of exterior wall area then th e wall insulationrequirement m ay only be satisfied with th e single insulation value.

TABLE 402.1.3EQUIVALENT U-F ACTORS"C L I MA T E -S UBCLIMATEZ O N E

2.1

2.2

3.1

3.2

33

MA X GLAZEDAREA TO W A L LA R E A RA TI O

15202530152025301 52025301520253015202530

M A XGLAZEDFENESTRATION(/-FACTOR0,800,750.650.510.650.550.510.460.650.550.510.460.600.510.450.400.510.450.400.40

MA XS K Y LI GHT( /-FACTOR110.750.750.750.750.750.750.750.750.650.550.510.460.650.650.650.650.650.650.650.65

MA X GLAZHDFEN ES TRA TI ONSHGC0.0550.0350.0350.0300.0350.0300.0300.0300.0350.0300.0300.0300.0350.0300.0300.0300.0350.0300.0300.030

M 1 N CEI LI N Gfi-VALUE0.0860.0820.0820.0820.0820.0820.0820.0710.0820.0820.0820.0710.0820.0820.0710.0710.0820.0820.0710.060

M1N WOODFRA M EW A L LR- VA LUE d

0.0690.0690.0690.0690.0690.0690.0470.0470.0690.0690.0470.0470.0470.0470.0470.0470.0470.0470.0470.047

MI NFLOORR- VA LUE0.3600.3600.3600.3600.1220.0960.0870.0870.1220.0960.0870.0870.0960.0960.0960.0960.0920.0920.0920.092

M INBASEMENTW A L LK - V A L U E0.1350.1350.1350.1350.1060.1060.0750.0750.1060.1060.0750.0750.1010.1010.1010.1010.0960.0960.0960.0%

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3.4

4

1 52025301 5202530

0.450.370.370.370.450.370.370.37

0.600.600.600.600.600.600.600.60

0.0300.0300.0300.0300.0300.0300.0300.030

0.0820.0820.0600.0600.0820.0820.0600.060

0.0470.0470.0470.0340.0470.0470.0470.034

0.0870.0870.0870.0590.0870.0870.0870.059

0.0750.0650.0650,0580,0750,0650,0650,065

a. Nonfenestration {/-factors shall be obtained from measurem ent, calculat ion or an approvesource.402.4.4 Testing of the Building Thermal Envelope for Infiltration. Leakage of thebuilding thermal envelope shall not exceed .50 Air Changes per Hour (ACH ) as measuredby the blow er door test. The testing procedure shall be based on ASTM E779 (StandardTest M ethod for Determining A ir Leakage Rate by Fan Pressurization) orAN SI/A SH RA E 136 (A Method of Determ ining Air Change R ates in DetachedDwellings).Testing shall be performed by an indepen dent third-pa rty technician approved by thebuilding official. Batch tes t ing shall be al lowed in accordance with Section 405 (BatchTesting Procedures). The standards for app roval of third-party technicians shall beestablished by adminis t ra t ive ru le .Documentation verifying tha t ther m al enve lope air leakage is equa l to or less than .50A C H shall be submitted with th e final Mechanical Code compliance package on thejobsite and include the fo l lowing informat ion:

1. Address of residence2. Nam e and com pan y of technician performing testing3. Date of final test4. Test results as a percentage A CHExceptions:

1. Exis t ing c onstruct ion where th e v o lu m e of the conditioned space isunchanged .2. A n addition of 200 square feet or less of conditioned space to existing

construction.402.5 Moisture Control. T he bui ld ing design shall not create conditions of accelerateddeterioration from m oisture conden sat ion. Above-grade frame wa lls, f loors and ceilings,not ventilated to al low mois ture to escape, shal l be provided with an approved vap orretarder. The vap or retarder shall be ins ta l led on the exterior side of the f raming. Avapo r barrier shall not be installed.

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A vapor retarder is not required where other approved means to avoid condensation areprovided.402.7 Radiant Barrier. A roof radiant barrier with an emittance of 0.05 or less astested in accordance with ASTM C-1371 (Standard Method of Determination ofEmittance of Materials Near Room Temperature Using Portable Emissionmeters) orASTM E-408 (Standard Test Methods for Total Normal Emittance of Surfaces UsingInspection-Meter Techniques) is required. The radiant barrier shall be installed accordingto the manufacturer 's instructions.A roof ra dian t barrier is not required for:

1. Roo fs covered w ith clay or concrete tile ha vin g a solar reflectance of .40 or greater2. Roofs covered with other materials having a solar reflectance of .50 or greater.3. Houses with sealed attics.4 . Houses with m echa nical equipm ent and all duct work located w ho lly w ithin theconditioned space.5. Ex isting construction w here there is no mod ification to the roof framing structure.

402.8 Attic Ventilation. Attic ven ti lat ion shall be installed in accordance with theReside ntial Code. V ent ilatio n shall not be provided where it introduces unconditioned aiinto the therm al envelope of the bui ld ing .403.2.1 Insulation. Supply and return ducts located outside the thermal envelope shallbe insulated to a min imum of R-8.

Exceptions:1. Ducts or portions thereof located within th e bui ld ing thermal envelopeshall comply with the Mechanical Code.2. Supply and return boots and p lenums may be insu la ted to a min im um ofR-6 if the efficiency of the cooling eq uipm ent is SEER -14 or greater.

403.2.2.1 Testing of Duct Systems fo r Leakage. Leakage of supply ducts and returnplenum /ducts shall not exceed 10 percent of total design airf low. The testing procedureshall be based on ASTM El 554 (Standard Test Methods fo r Determining External A irLeakage of Air Distribution Systems by Fan Pressurizatiori), ASHRAE 152-2004(Method of Test for Determining the Design and Seasonal Efficiencies of ResidentialThermal Distribution Systems), or a gene rally accepted equ ivalen t method.Testing shall be performed by an independ ent third-party technician approved by thebuilding official . Documenta t ion verifying duc t leakage of less than 1 0 percen t sha ll besubmitted with th e final Mechanical Code compliance package on the jobsite. Batch

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testing shall be al lowed in accordance w ith Section 405 (Batch Testing Procedures).Docu mentation shall include the fo l lowing :1. Address of residence2. Date of final test3. Name and company of technician performing duct testing4. Type of test performed (duct pressurization method or blower door subtractionmethod).5. Test results in percentage of airflow CFM.

Exceptions:1. Existing construction with no modification of or addition to the exist ingductwork.2. An ad dition of 200 square feet or less of cond itioned space to existin gconstruct ion.

403.6.1 Documentation of Heating and Cooling Equipment Sizing. Documenta t ionverifying th e methodology and accuracy of heating and cooling equipm ent s izing shall besubmitted with the final Mechanical Code compliance package on the jobsite.Docum entation shall include the follow ing information:

1. Address of residence2. Nam e of individ ual performing load calculat ions.3. N a m e and version of load calculat ion software.4. Design temperatures (outdoor and indoor) according to the Air ConditioningContractors of America 's (ACCA) Manual J, A C C A M a n u a l N , American Societyof Heating, Refrigeration and Air-Co ndit ioning Engineers, U .S Department ofEnergy standards, or other methodology approved by the building official asestablished by adm inistrative rul e.5. Area of walls , w ind ow s, sky ligh ts and doors w ithin +/- 10 percent of architecturalplans or actual buil din g.6. Orientation o f windo ws and glass doors, infiltra tion rate, duct loads, internal gains,insulation values, and Solar Heat Gain Coefficient of windows.7. Heating and cooling load calculations.

403.7 Filtration fo r Ventilation Systems. Filters installed in ven ti lat ion systems shallhave a minimum efficiency report ing value (MERV) rat ing of 6 or greater.403.8 A ir Balancing of Ventilation System. Volum etr ic airf low in cubic feet perminu te (CFM) shall meet the design/application requirements . A irf low testing shall beperformed by an independent third party technician approved by the building official,with all interior doors closed and all blowers turned on at cooling speed.

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Docum entation shall be provided to verify that: (1) individ ual room sup ply airflow s arewith in +/-20percent of the design /application requirements; (2) the pressure differencebetween each room and open area adjacent to that room does not exceed 3 Pascals; and(3) the pressure difference between th e open area and the outside does not exceed -3Pascals. D ocum entation sh all also verify that total system CFM airflow is within +/- 1percent of 360 CFM airf low per ton of air conditioning installed. A ll docum entation shallbe subm itted with the final Mechanical Code com pliance package on the jobsite. Batchtesting shall be allowed in accordance with Section 405 (Batch Testing Procedures).Documentation shall include the fol lowing:

1. Address of building2. Nam e and com pany of technician performing the testing3. Date of final test4. Procedure used for the test5. Results of room-by-room airflow tests, including design/application CFM airflowrequired, design/application CFM airflo w required as a percentage of total CFMairflow required, actual measured CFM airflow, actual percentage of total C FMairflow measured, and percentage of design/application CFM airflow requiredactually attained6. Re sults of room-b y- room pressure tests, includ ing Pascal differenc e between roomand open area adjacent to room and between open area and the outside7. Results of static pressure test (see Section 403.8.1, System Static Pressure) andman ufacturers ' b lower data table ide ntifying total rated CFM airflow

M easurement of room airflow may be by one of the fol lowing procedures:1 . Flow hood used in accordance with th e manufacturer ' s instructions2. Traverse with anemom eter (hotw ire or rotary) used in accordance w ith themanufacturer ' s ins t ruct ions3. Pitot tube and slant ma nom eter procedure as specified by the Associated AirBalance C ouncil , National Environ me ntal Ba lancin g Burea u, or the Ame ricanSociety of Heating, Refrigeration and Air Con dit ioning Engineers.

Exceptions:1 . Existing construction with no modif icat ion of or addi t ion to the existingductwork.2. An a dd ition of 200 square feet or less of conditioned space to existingconstruction.

403.8.1 System static pressure. Total system static pressure (with filters in place) shallnot exceed 0.8" water column on gas furnaces and 0.6" water column on electric airPage 9 of 14


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handlers. Static pressure testing using a digi ta l manom eter or magnehe l ic sha l l beperformed by an independent third party technician approved by the bui lding official.Documenta t ion ver ifying static pressure testing results with in the a l low ed ranges shal l besubmi t ted with the final Mechanical Code compliance package on the jobsite. Batchtest ing shal l be a l low ed in accordance with Section 405 (Batch Testing Procedures').Docum enta t ion sha ll inc lude the fo llowing:

1 . Address of bu i ld ing2. Nam e and comp any of technic ian performing the tes t ing3. Date of f inal test4. Procedure used for the test5. Re sults of the test listing static pressure for applications tested

Exception:1. Exist ing con struct ion with no m odif icat ion of or ad dit ion to the exist ing

duc tw ork .2. An a ddit ion of 200 square feet or less of cond it ioned space to exist ingconstruct ion.403.9 Water Heating. A res identia l bu i ld ing tha t has an exis t ing or planned (orequiv alent distr ic t) gas service located w ithin the adjacent r ight- of-w ay shal l not useelectric resistance water heat ing as the prim ary source for hot water. In a l l instance s, anelectric resistance wa ter heater m ay be used as a secon dary heater in series w ith aprimary heater that is not electric resistance.A resident ia l bui ldin g that does not have gas service located w ithin the adjacent right-of-w ay m ay insta l l e lectric resistance water heaters h av ing a m in im um eff ic iency of 93percent in conjunc t ion w i th a preprogrammed water heater t imer in l ieu of gas fired waterheat ing. The t imer shal l be preprogram m ed to turn the water heater off between thehours of 3:00 p.m. and 7:00 p.m. from June 1 to September 30 and from 12:00 a.m. to4:00 a .m. throughout th e year. The t imer shal l hav e a readily accessible override, asdefined by the bu i ld in g off ic ia l adm inistra t ive rule , capable of restoring pow er to thewa ter heater for one hour wh en activa ted. In this section, "readily accessible" meanscapable of being reached safely and q uick ly for operation, repair , or inspect ion withoutthe need to cl imb over or remove obstacles or to resort to a ladder or other portableaccess equipment .

Exception:A n additional electric resistance stand alone water heater that meets th erequi rements of Section 403.9 (W a te r Heating) may be insta l led to provide

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adequate hot water to approved appliances or f ixtures if one or more of thefol lowing condit ions apply:1. the gas p ip ing or vent piping for the addi t ional gas water heater wouldrequire s tructural al terat ion;2. the gas piping or vent piping for the addition al gas wate r heater wou ld

require penetration of a fire resistive assembly;3. the gas water heater w ould require an increase in the size of the gaspiping sys tem; or4. in an existing build ing , the exis t in g gas w ater heater or gas or waterpiping is located in an inaccessible concealed space.

403.10 Space Heating. In all res iden tia l bu i ld ing s and m ixed-use buildings with units inexcess of 500 square feet, th e pr im ary source of space heating may not be electricresis tance.403.11 Lighting. A m i n i m u m of 25 percent of indoor lamps must be Energy Star-com pliant high eff icacy lamps. Lam ps in closets shall be excluded from the 25 percentcalculat ion. Outdoor luminaires that are permanently at tached to a structure m ust be h ighefficacy or controlled by an integral photocell.

TABLE 403.1High Ef f i c ac y Lum ps

Lamp Power< 15 wall

15 -40 wat t s> 40 wa l l s

Required Lamp Efficacy40 l u m e n s / w a l l50 l u m e n s / wa t t60 l u m e n s / wa t t

Section 405. Batch Testing Procedures1. Elig ib i l i ty

A bu i lde r is eligible fo r batch test ing if :1. the builder has bu ilt at least 85 homes,or d w ellin g un its in the 12 m on th periodimmedia te ly preceding the batch test; or2. the batch of residences to be tested is with in th e same subdiv is ion us ing th e samesubcontractors.

2. Ini tial Testing

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During initial testing, a third-party testing contractor performs all required tests on atleast three consecutive houses or dw ellin g units. Batch testing is on ly allow ed if testresults meet Code requirements.Initial testing is required fo r each new subdivision if there is a change insubcontractors . Houses must be of a substantial ly s imilar floor plan. M ult ifam ilydwel l ing uni ts mus t be within the same building to qualify for inclusion in a batch.

3. Batch Identification and SamplingThe builder identifies a "batch" which is a group of homes or dw ell ing units ready fortesting. A group of homes is ready for testing if the drywall is complete, interior doorjams are installed, the HVAC system installed, and final air sealing is completed.The th ird-pa rty testing contractor ran do m ly selects at least 15 percent of the hom esfrom a batch fo r testing and inspecting. For m ultifam ily s tructures , a m i n i m u m of 15percent o f the dwelling u nits in each bu ild ing m ust be tested. At least one of eachtype of dw ell ing unit mu st be tested.If each tested home or dwelling unit w ithin the batch meets Code requirements, theremaining homes or dw ell ing units in the batch shall be identif ied as meeting Coderequirements .

4 . Failure to Comply wi th Code Requirements

1. If any home or dwelling unit within the identified batch fails to meet a Coderequiremen t, the builder will be directed to fix the cause or causes of the failureand 30 percent of the rema in ing homes or dw el l ing un i ts in the batch will berandomly selected for inspection and testing by the third-party technician regardingthe specific cause or causes of fai lure.2. If any failure s occur in the addition al tested hom es o r dwelling un its, all remaininghomes or dwelling units in the batch must be individually tested for Codecompliance.3. A subdivis ion or mult ifam ily project w ith three failures w ithin a 6-month period isno longer eligib le to use the sam pling protocol in that com m un ity or project untilsuccessfully repeating an initi al test. Sam pling can be reinstated after an inspector

f inds that at least three consecutive hom es or dw elling u nits meet code allrequirements .

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4. The bui lding official may not issue a certificate of occupancy for a home ordwel l ing uni t in a batch unti l test ing has been perform ed and passed on the hom esor dwelling units selected for testing.

501.3 Climate Zones. A ll references to Climate Zone 2 or 2A in this chapter shal l beinterpreted as referring to Clim ate Zone 2.2 or 2.2A, as applicab le , in this Code.502.7 Reflective Roofing. Roof surfaces with an incl ine of two inches or less of r ise pereach 12 inches of horizonta l run shall incorporate a roof materia l hav ing a m i n i m u mreflectance of 0.70 or a m i n i m u m solar reflective index (SRI) of 78. Roof surfaces withan inc line greater tha n two inches of rise per each 12 inches of horizontal run sha llincorporate a roof ma teria l hav ing a m inim um reflectance of 0.35 or a m inim um SRI of29.The ref lectance measurement will correspond to ASTM E903-96 (Standard Test Methodfor Solar Absorptance, Reflectance, and Transmittance of Materials Using IntegratingSpheres), ASTM 1918-97 (Standard Test Method for Measuring Solar Reflectance ofHorizontal and LowSloped Surfaces in the Field), or A S T M 1549-04 (Test Method forDeterminat ion of Solar Reflectance Near Am bient Tempera ture Using a Portable SolarReflectometer).

Exception: Vegetated roofs or roof top pools.503.2.10 Ventilation Filtration. All ventilation systems shall incorporate fil trationhaving a m inim um ef f ic iency repor t ing va lue (M ERV ) ra t ing of 6 o r grea te r .505.2.4 Exterior Lighting Controls. Lighting for all exterior ap plicat ions shal l haveautom atic controls that turn off exterior l ight ing when sufficient day l igh t is avai lable orwhen the l ight ing is not requi red dur ing n ight t im e hours . Suff icient day l ight sha ll bedetermined in accordance with recomm ended IESN A RP-33-99 (Lighting for ExteriorEnvironments) i l luminance levels.Ligh t ing not required or designated for dus k-to-daw n operation shal l be controlled by anastronomical time switch. Lighting designated for dusk-to-dawn operat ion shal l becontrolled by an astronomical time switch or in series w i th a photo sensor. Astronomicalt ime switches shal l be capable of re ta in ing programming and the t im e set t ing durin g lossof power for a period of at least 10 hours.

Exception:Ligh ting for covered vehicle entrances or exi ts f rom bu ildin gs orparking structur es when required for safety, securi ty, or eyeadaptation.

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PART 2. This ordinance takes effect on Janua ry 1, 2008.

PASSED AND APPROVED

October 18 ., 2007

APPROVED:City Attorney

ATTEST;

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Wil l W y n nM a y o r 0

ShirleCity f GentryClerk

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