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Transcript of Naperville Downtown2030 · PDF fileB with 1st Floor Oƒce Allowance Secondary Downtown ......
NapervilleDowntown2030Planning the Downtown Experience
Downtown Design Standards
Approved by the Naperville City Council on April 6, 2011 (Ord. 11-055)Prepared by the Transportation, Engineering, and Development Business Group
Introduction Page2
TABLE OF CONTENTS INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
STANDARDS FOR DOWNTOWN CORE AND SECONDARY DOWNTOWN . . . . . . . . . . . . . . . . . . . . . . . . . 5A.BuildingPlacement&Orientation................................................................5B.BuildingScale....................................................................................6C.Style&Character................................................................................8D.Entrances&Windows...........................................................................11E.Awnings&Canopies............................................................................13F.Lighting..........................................................................................14G.OutdoorSeatingintheDowntownCore........................................................14H.UtilityConsiderations............................................................................15I.Signs.............................................................................................18J.ParkingFacilities................................................................................20K.SpecialConsiderationforSitesUnderConstruction..............................................21
STANDARDS FOR TRANSITIONAL USE AREAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22A.ArchitecturalStyle,BuildingAesthetics&Materials....................................................22B.Landscaping&Screening...........................................................................22C.Off-StreetParkingFaciliites&ExteriorLighting.....................................................23D.Signs........................................................................................23
STANDARDS FOR BUILDINGS OF HISTORIC INTEREST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
MAPS1.NapervilleDowntown2030FutureLandUse......................................................4
ILLUSTRATIONS1.LineofSightDiagram............................................................................62.TraditionalDowntownStorefront.................................................................83.RooflineDiagram................................................................................104.ParapetDiagram.................................................................................105.Signage.........................................................................................186.HistoricBuildingRenovationintheDowntown...................................................25
All photographs, maps and illustrations areprovidedbyCityofNapervillewiththefollowingexceptions:
HitchcockDesignGroup:Images9,17,34,35,36and43
Cyburbia:Images8,13
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NapervilleDowntown2030:PlanningtheDowntownExperience-Downtown Design Standards Page3
Introduction Downtown Design StandardsisacompaniondocumenttoNaperville Downtown2030thatservesasanimportantguidefordesignofnewconstruction,additionsandmodificationstobuildingsandsitesinthedowntown.Propertyownersanddesignprofessionalsshouldrefertothisdocumentindesigningrehabilitationsandnewimprovements,asitwillbeutilizedinthereviewofsuchproposals.Thestandardsarethesinglecontrollingdesignreferenceforthedowntownareaandwillapplytoprivateandpublicimprovementsexceptasnecessarytoaccommodatepublicsafety.
EnvironmentalsustainabilityisvaluedwithinthedowntownandtheCityofNapervilleasawhole.Flexibleapplicationofthedesignstandardsmaybeprovided,ifdirectlyrelatedtotheuseofdesignelementsthatarenecessarytoachieveacceptedenvironmentallysustainablebuildingprinciplessuchasthosesetforthbytheU.S.GreenBuildingCouncilintheLEED(LeadershipinEnergyandEnvironmentalDesign)ratingsystemsandreferenceguides.AdditionalinformationaboutenvironmentalsustainabilityisprovidedinSectionDoftheBuilding Design Guidelines (2007)andSection 6 Urban EnvironmentofNaperville Downtown2030.
Experienceshows,timeandagain,thatappearanceisimportanttoahealthydowntownbusinessenvironment.Workingtogethertocreateandsustainanattractivedowntownwillbenefitthecommunityasawhole.
Introduction
Thedesignstandardsareorganizedtoaddressfourprimarylanduseareasofthedowntown--DowntownCore,SecondaryDowntown,TransitionalUse and the North Downtown Special Planning Area -- and to provideguidanceforhistoricbuildingrenovationsthroughoutthedowntown.
TheprimarylanduseareasofthedowntownaredefinedinSection 3 Land Use and Development of Naperville Downtown2030 and are summarizedhereasfollows:
Downtown Core:Servesastheactivitycenterofthedowntown,allowingfor the most intense development form and uses. This area of thedowntownincludesretail,commercialserviceandrestaurantusesontheground floor, with office, commercial service, general service, financialinstitutionsandresidentialusesonupperstories.
Secondary Downtown: Comprised of office, service and/or residentialuses,inamannerlessintensethantheDowntownCore.Thisareaallowsfor office, commercial service, general service, financial institutions andresidentialuseswhileprohibitingretailandrestaurantuses. ThisareaisphysicallydistinguishedfromtheDowntownCorebymoderatesetbackrequirementsandon-siteparking.
Transitional Use:Provideslow-intensityoffice,service,andresidentialusesthataredesignedinamannercompatiblewithadjacentneighborhoods.Thisareaisintendedforconversionofexistinghomesorconstructionofnew residentially-styled buildings for office or general service uses, aswellasconstructionofnewtownhomes. Fullon-siteparkingandmoresubstantialsetbackrequirementsarephysicalcharacteristicsofthisarea.
North Downtown Special Planning Area: Is the anticipated long-termnorthernexpansionareaof thedowntown. Theareamay includecultural/destination,retail, residentialorofficeuses. Theusesproposedwilldeterminewhichaspectsofthedesignstandardsshouldbeapplied;however, any development of this area shall respect the specificrecommendationsofNaperville Downtown2030.
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Urban Plaza
Urban Plaza
Centennial Beach
Central Park
Naper School
Washington Junior High
Municipal Center
CEN
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SPRING AV
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SCHOOL ST
EWIN
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WEB
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MIL
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FRANKLIN AV
BENTON AV
VAN BUREN AV
JEFFERSON AV
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JACKSON AV
CHICAGO AV
WATER ST
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WO
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STNORTH AV
AURORA AV
PORTER AV
WES
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NicholsLibrary
RubinCenter
Riverwalk
FredenhagenPark
DuPage Children’sMuseum
Naper Settlement
Naperville Central High School
DOUGLAS AV
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West Branch DuPage River
Naperville Metra Station
BURLINGTON NORTHERN SANTA FE RAIL LINE
NaperHomestead
North Central College
Future Land Use North Downtown Special Planning Area
Downtown Core
A with 1st Floor O�ce by Conditional Use B with 1st Floor O�ce Allowance
Secondary Downtown
Transitional
Single-Family Residential
Multi-Family Residential
Institutional
Parks and Open Space
Outside Study Area
A
B
Map 1: Downtown Future Land Use
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NapervilleDowntown2030:PlanningtheDowntownExperience-Downtown Design Standards Page5
Standards for Downtown Core and Secondary Downtown
A. Building Placement & Orientation
A.1.Streetwalls
1. Constructnewbuildingsatthefrontsetbackortoalignwiththedowntownstreetwall.2. Buildcornerbuildingstotheprimarystreetwallorfrontsetbacklinefortheentirefrontageatall
corners.Thesebuildingsarecriticaltothedowntownastheyestablishapresenceatintersectionsandinvitepedestrianactivityalongthestreet.
3. AvoidphysicalgapsinthestreetwallintheDowntownCore.Wherephysicalgapsarenecessary,minimizeinterruptionsbyprovidingoutdoordiningorgatheringspaces;lowdecorativeorseatingwalls;lowdecorativefencing;orlandscapescreening.
4. Avoiddrivewaysmid-blockintheDowntownCore,asdrivewaysinterruptthepedestriancharacterestablishedbyastreetwall.
Image 1: JacksonAvenuestreetwallA streetwall is established by continuous building fronts at or near the front property line with noor minimal gaps between them. Streetwalls reinforce the pedestrian character of the downtown byestablishingaestheticandfunctionalcontinuity.Thisdevelopmentpatternshouldberetainedwhereexisting,andencouragedforinfillandnewconstructioninthedowntown.
Image 2: CornerstreetwallpresenceatMainStreetandVanBurenAvenue
DowntownCoreandSecondaryDowntownAreas Page6
B. Building Scale
B.1.Height&Bulk
Building height and bulk in the downtown is regulated by the Zoning Ordinance (Section 6) of theNapervilleMunicipalCodeandguidedbySection 3 Land UseofNaperville Downtown2030,aswellasthestandardsthatfollow.
1. Respecttheexistingscaleofthedowntownandavoidextremedifferencesinbuildingheightandbulkforrehabilitationandnewconstruction.
2. Newone-storybuildingsaretoosmalltomaintaintheurbancharacterandstreetwalleffectoftheDowntownCoreandarediscouraged.
3. Buildingsinthetraditional DowntownCorehaveaprevailingheightoftwostories.Newbuildingsthatareconstructedintheseareasshouldpresentaconsistentorcomplementaryheightasviewedfromthepedestrianlevel,withadditionalstoriessteppedbackusingaline-of-sightmethodology. Image 3: JeffersonAvenuereflectstheprevailing
two-storyheightintheDowntownCore
Illustration 1: Line-of-SightDiagramillustratinghowasteppedbackthirdstoryscreensviewfromstreet.
Line-of-sightdescribesthemethodbywhichimprovementscanbedesignedtoeliminateorminimizevisibilityfromthepedestrianlevelthroughplacementofbuildingfeatures.Forexample,athirdstoryadditionmaysituatedsuchthatitisnotvisiblefromthestreetlevelatthefrontofthebuilding.
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B.2.Articulation
1. Usevariationsintheexteriorwallplanetosubdividethefacadesofalargerbuildings,especiallythosethatextendacrossmultiplecitylots,intosmallerverticalsegmentsthatareconsistentwiththescaleandproportionoftraditionaldowntownbuildings.
2. Applytechniquestoreducetheperceivedmassoflargerbuildingssuchasvariationsinmaterialsandcolors,rooflinearticulation,andotherverticalarchitecturalfeatures.
3. Apply compatible but distinct facade designs to multiple storefronts or partitions that are partofthesamebuilding.Themesmaybeestablishedthroughuseofcomplementarycolors,cornicetreatmentsanddecorativematerials.
4. Ensurethatproportionsofopeningsorotherarchitecturalelementsareconsistentwithexistingbuildings in the downtown, particularly those along the same block, to maintain aestheticcohesiveness.
5. Use architectural details to help maintain the traditional character, scale and proportion ofdowntown.These details include the size of windows; the location of doorways; and the designandplacementofcolumns,pilasters,moldingsandotherdecorativefeatures.
6. Avoidblankwallsonallsidesofastructurethatareopentopublicview.Windowsarenotrequiredforbuildingfacesabuttinginteriorsidepropertylines,butbuildingarticulationshouldbeprovided.
Image 4: Variationsintheexteriorwallplanesubdividethefacadeonthissinglebuildingintomultipleverticalstorefrontsegments
Image 5:Facadetreatmentsonsidewallprovidearticulation
DowntownCoreandSecondaryDowntownAreas Page8
C. Style & Character
C.1.BuildingCharacter
1. Designnewbuildingstoofferhigh-qualityandcompatibleinterpretationsofthetraditionalbuildingstylesexistingwithinthedowntownarea,particularlythosealongthesameblock.
2. Incorporatecharacteristicsofcommercialstorefronts(e.g.,displaywindows,recessedentrancesandawnings)inthearchitecturaldesignofnewbuildingsintheDowntownCore.
Image 7:MainStreetPromenadepresentsacontemporaryinterpretationoftraditionaldowntowncommercialbuildings
Illustration 2:TraditionalDowntownStorefront
Image 6: Thisbuildingusestraditionalproportionsandfeaturestocomplementthedowntowncharacter
UPPER FACADE
STOREFRONT
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NapervilleDowntown2030:PlanningtheDowntownExperience-Downtown Design Standards Page9
C.2.Color
1. Selectexteriorcolorsthatcomplementthehuesofnearbybuildings.Typicalbuildingcolorsinthedowntownareaincludethenaturalbrickandstoneshadesofred,buff,white,creamandgray.
2. Choose building and accent colors that are appropriate to the period or architectural style of abuilding.
3. Usedarkerorbrighterhuesonly foraccent or to drawattention todetails suchas architecturalornamentationordoorways.
4. Donotapplypainttomasonrysurfaceswherenonepreviouslyexisted.
C.3.Materials
1. Brickandstonearepreferredprimaryandaccentbuildingmaterialsforallbuildingtypes,includingmultiple-family.
2. Applywoodclapboardsidingorsimilarlystyledfibercementsidingasappropriatetothebuildingarchitecture.Avoidtheuseofroughsawedwood,aluminumsiding,rusticshinglesorplasticpanels.
3. DonotuseStucco,EIFSorDry-vitasaprimary material.Thesematerialsmaybeacceptableasanaccentapplicationabovethestorefrontlevel,basedonthedesignintentofthebuilding.
4. Donotuseglass,metalpanels,andconcreteasprimarybuildingmaterialsonthestreetfacadeinthedowntownarea.
5. Useconsistentbuildingmaterialsanddetailingonallsidesofastructurethatareopentopublicview.
Primary Material: the dominant exterior building material, typically comprising 75% to 90% of eachexteriorbuildingfaceexcludingwindowsanddoors.Accent Material: utilized to provide architectural interest and variety on a building. Accent materialswill typically comprise 10% to 25% of each building face excluding windows and doors, depending onarchitecturalstyleandcontext.
Image 8: DISCOURAGEDuseofcolor(bright,conflictinghues)inadowntownsetting
Image 9:Acomplementarymixofmasonryandwoodmaterials
DowntownCoreandSecondaryDowntownAreas Page10
C.4.Rooflines&Parapets
1. Designnewbuildingstocomplementtheestablishedrooflinesandcornicetreatmentsofnearbybuildingsalongtheblock.
2. Avoidgable,shakeorshingleroofs,exceptasappropriatetothearchitectureorperiodofabuilding.
3. Screen all rooftop mechanical equipment (including supporting pipes,exhaustandventstacks)toitsfullheightbyaparapetwallonallsidesofthebuilding.Individualscreeningsystemsshallnotbeconsideredfornewconstruction.
4. Consider alternate screening methods for existing buildings whereinstallationofaparapetisinfeasible.Screeningmustminimizeorconcealtheappearanceofrooftopmechanicalequipment.
Illustration 3: Newbuildingsshouldbecomplementarytotheestablishedrooflinesofneighboringbuildingsontheblock
Illustration 4:Parapetsmustscreenrooftopunitstotheirfullheight
Image 10: Parapetsareusedtoscreenrooftopunitssothattheyarenotvisiblefromthegroundlevel
PARAPET
MECHANICAL EQUIPMENT
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D. Entrances & Windows
D.1.CommercialStorefrontsintheDowntownCore
1. Incorporatestorefrontfeatures,suchaslargedisplaywindowsanddoors,lowbulkheads,transoms,relativelythinframingelements,andacorniceelementinnewbuildingstoseparatethestorefrontfromupperstories.Thesefeaturesprovidecompatibilitywiththecharacterofthedowntownandenliventhepedestrianshoppingstreet.
2. Considerrecessedentrancesforcommercialstorefronts.3. Keepwindowsrelativelyclearofobstructions.
D.2.Entrances
1. Orientprimarybuildingentrancestoapublicstreet.2. Providedoorsandentrancesthatarehighlyvisible,astheseareinvitingtocustomers.3. Ensurethatthefrontdoorsofnewbuildingsreflectthedoorwayplacementandproportionsof
existingbuildingsalongthesameblock.Provideangledcornerentrancesforbuildingslocatedattheintersectionofroadways.4. Applydetailedtreatmentofwindowsanddoorsonprimaryentrancesthroughsuchfeaturesaslintels,sills,molding,anddecorativedoorstyles.5. Incorporateentrancemodificationsforbuildingrenovationprojectsthatprovideimprovedaccessibility,wherefeasible.PleaserefertoSection
6 Urban EnvironmentofNaperville Downtown2030 foradditionalrecommendations.
Image 11: Contemporarydowntownstructurewithtraditionalstorefrontelements
Image 12:CornerentranceonhistoricstorefrontatnorthwestcornerofMainStreetandJeffersonAvenue
Image 14: DetailedcornerentrytreatmentsatMainStreetPromenade
Image 13: Thiscustomerstorefrontisinvitingandaccessibletocustomers
DowntownCoreandSecondaryDowntownAreas Page12
D.3.RearCustomerEntrancesintheDowntownCore
1. Providerearcustomerentrancestorestaurants,storesandshopsonblockswherepublicparkingorpedestrianwalkwaysarelocatedbehindthebuildings.
2. Design rear customer entrances to be attractive and inviting, incorporating design treatments that arecomparabletofrontentrances.PleaserefertoSection 6 Urban Environment,ofNaperville Downtown2030foradditionalrecommendations.
D.4.Windows
1. Designthesizeandplacementofwindowsonnewbuildingstoreflectthewindowtypes,sizes,proportionsandpatternsofnearbybuildingsalongtheblockface.
2. Provide ground floor display windows on commercial building faces that abut pedestrian areas in theDowntownCore.
3. Avoidfloor-to-ceilingwindowsintheDowntownCore.Provideawoodormasonrybulkheadbeneathallfirstfloorwindows.
4. ProvideclearglasswindowsatthepedestrianlevelintheDowntownCore.Windowglazingmaybelocatedonupperstoriesonlyandshouldbeclearorslightlytinted.Avoidreflectiveordarkcoatings.
Image 15: RearcustomerentranceatnortheastcornerofMainStreetandJeffersonAvenue
Image 16: ConsistentdisplaywindowplacementalongWashingtonStreetinthedowntown
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E. Awnings & Canopies
1. ProvideawningsandcanopiesintheDowntownCoretoaddvisualinteresttothestreet,provideprotectionfromtheelementsanddefinethecharacterofthedowntownarea.
2. Positionawningsandcanopiesatleasteightfeetabovethesidewalk.3. Designawningstofitwithintheframeofthestorefront.Awningsshouldnothideabuilding’sfaçade,distortitsproportions,orcoverarchitectural
features.4. Selectmattecanvasawningmaterialsthataremadeofdurablefabricmaterialthatcanbeeasilycleanedandresistsfading.Donotusevinylor
metalawnings.5. Installawningframessoastominimizedamagetotheunderlyingstorefront.6. Selectawningsthatarecomplementarytothestyleandcolorofadjacentstorefronts,particularlyonasinglebuildingwithmultiplestorefronts.
Solidcolorsorsubtlestripedpatternsarepreferredforallawnings.7. Avoidshingle,mansardorarch-shapedcanopies.8. Avoidawningsthataremountedintoasidewalk.9. DonotuseglassormetalcanopiesintheDowntownCore.InSecondaryDowntownareas,canopiesshouldbecomplementarytothebuilding
architectureandappropriatetothecontextofbuildingsinthenearbyvicinity.
Image 17:DISCOURAGEDapplicationofarch-shapedcanopies.Canopiesandawningsshouldnotextendacrossmultiplestorefrontsorbuildings.
Image 19: Mattecanvasawningsshouldbeappliedwithinstorefrontframesandbecomplementaryalongtheblockface
Image 18: Encouragedapplicationofawningsforasingletenantthatextendsacrossmultiplebuildings.
DowntownCoreandSecondaryDowntownAreas Page14
F. Lighting
1. Provideilluminationonfrontandrearentriestoensurecustomerandemployeesafety.2. Selectdecorativelightfixturesthatarecompatiblewiththebuildingdesign.3. Chooselightbulbsthatemitawarmtoneforexteriorbuildingidentificationandaccentlighting.4. Provideshieldsonrearsecurityorentrancelightingtominimizeimpacttoneighboringuses.5. Consideruseofexteriorspotlightingtoilluminateprominentbuildingsand/orbuildingdetails,6. Alleywaysorpaseosthatareusedforpedestrianmovementinthedowntownshouldbeadequately
litforsafetyandcomfort. RefertoSection 6 Urban Environmentof Naperville Downtown2030 foradditionalrecommendations.
G. Outdoor Seating in the Downtown Core
1. ProvideopportunitiesforoutdoorseatingwithnewdevelopmentintheDowntownCore.Outdoorseatingmaybeprovidedthroughbenches,lowwalls,anddiningareaswhereappropriate.
2. Incorporatelandscaping,decorativefencingorotherphysicalelementstoseparateoutdoordiningareasintheDowntownCorefrompedestrianways.
Image 20:Exteriorspotlightingforpedestrianandserviceentrancesonarearfacade
Image 21: Outdoordiningadjoiningapedestrianwayindowntown
Image 22: Outdoordiningindowntown
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NapervilleDowntown2030:PlanningtheDowntownExperience-Downtown Design Standards Page15
H. Utility Considerations
H.1MaintenanceandServiceAreas
1. Maintaintherearportionsofallpropertiesingoodcondition,clearoftrashanddebris.Rearserviceareasshouldnotbedisruptiveforbuildingswithdualcustomerentrances.
2. Screenandlocatetrashreceptacles,dumpsters,serviceareasandoutdoorstoragefacilitiesinsuchamannerthattheyarenotvisiblefromnearbystreets,sidewalksandcustomerparkingareas.
3. Provideappropriatestorageorpromptlyremoveodorousorliquidwaste,particularlyfoodwaste.4. Repair,repaint,andupgradetherearofexistingcommercialbuildingsasrequired.5. Designattractiverearfacadesfornewbuildingswithinthedowntowncore,includingintegration
ofmaintenance,utilityandserviceareasinthebuildingdesign.
H.2.UtilityEquipmentScreening
1. Mountutilityequipmenttoanexteriorwall,unlessanalternatelocationisauthorizedbytheutilityprovider.
2. Insetexteriorgas, telephone,andutilitymeteringequipment intothebuildingexteriorand/orplaceitonasecondaryfaçadethatdoesnotabutpedestrianwalkways.Screenequipmentthroughtheuseofbuildingdesignfeaturessuchaswingwallsorapprovedlandscaping,minimizingtheneedforopaquefencing.Iffencingisapproved,itmustbecomplementarytothebuildingdesign.
3. Electricalmeteringequipmentmaybeplacedinanexteriorclosetlocatedatgroundlevelsubjectto approval by the Department of Public Utilities-Electric (DPU-E), provided that the closet issufficientlydeeptohousemeteringequipmentandpreventstorageofanymaterials (typicallynot greater than 18”), and that it is accessible to the public utility at all times. Considerationshouldbegiventoadditionalmetersrequiredforfuturetenantdivisions.
4. Donotallowutilitymeteringequipmenttooverhangintothepublicright-of-way.5. Avoidphysicalobstructionstoutilityequipmentareas(e.g.,parking).
Image 23: Refusestorageareasmaybeinsetintoabuildingfacadeandscreenedwithopaquefencing.
Image 24:Electricmetersmaybeplacedwithinanexteriorcloset(typicallynotgreaterthan18”).
DowntownCoreandSecondaryDowntownAreas Page16
DOWNTOWN2030 DESIGN STANDARDS SPOTLIGHT: Spotlight On Electric Meter Screening
Electricmetersarenecessarytoensureproperdistributionandbillingofelectricalservicetoabuilding.Abuildingmayhaveasingleelectricmeterormultiplemeterstoserveeachbuilding tenant. Unrestricted access to electric meters is necessary for the Departmentof Public Utilities - Electric (DPU-E) for the purposes of meter reading and maintenance.Obstructionsthatimpedeaccesstoelectricmeterscanresultinextendedpoweroutagesforbuildingtenants.Electricmetersmustalsoaccommodateadequateworkspacesforthesafetyofutilitypersonnel,whomaybeworkinginrestrictedspaces.
DPU-Erequires thatelectricmetersbemountedtoanexteriorbuilding face.However, itis also important to consider the location and screening of metering equipment as thisequipment can be unsightly on a public building face and inviting to vandals when tooreadily accessible. Developers and architects should work with the Transportation,Engineering and Development Business Group (TED) and DPU-E in the building designphase to consider the location and screening of electric metering equipment to meetsafety,serviceandaestheticobjectives.
Thediagramabovedepictsanacceptablemeterscreeningsystem.Electricmetersareplacedinanexteriorclosetlocatedatthegroundlevel.AccesstotheutilitypersonnelisprovidedthroughalockingmechanismapprovedbytheDepartmentofPublicUtilities-Electric.Thediagramalsodepictsaconceptualinterior arrangement that provides efficient connectivity between the electric meters and interior electrical equipment. DPU-E access in this exampleisrequiredonlyfortheelectricmetercloset. Locationandscreeningofelectricmeters inthedowntownisaddressedonasitespecificbasis,requiringapprovalbyTEDandDPU-E.
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H.3.ElectricUtilityTransformerLocations
1. Locatethetransformerinanareathatisanaccessibleandsafeworklocation.Propertransformerplacementisimportanttoensurethesafetyofcityemployees,thegeneralpublic,andprivateandpublicproperty.
2. Whenpossible,avoidlocatingnewtransformersonprimarypedestrianstreets.3. Donotplacetransformerssoastoposeanobstructiontopedestrianorvehicleroutes.4. Selectdiscreetlocationsfortransformersorscreenasappropriate.5. Wheretransformersareplaced inhighvisibilityareas,consideraesthetic treatments toenhance
visualcompatibilitywiththebuildingandsite.6. Incorporatebuildingdesignfeaturessuchaswingwallsorlandscapingintotransformerscreening,
minimizingtheneedforopaquefencing.Iffencingisapprovedbythecity,itmustconsistofeasilyremovablepanelsandbecomplementarytothebuildingdesign.
DOWNTOWN2030 DESIGN STANDARDS SPOTLIGHT: Electric Utility Transformer Locations
Transformersprovideelectricservicetoexistingandfuturedowntownbusinesses.Sitingutilitytransformersinthedowntownischallenging,aslotsarecompactandbuildingstypicallyextendfrompropertylinetopropertyline.Isimportanttobalanceservice,safety,costeffectiveness,andtheaestheticofthedowntownpedestrianenvironment.Transformerslocatedinsideenclosures,whilethemostattractiveapproach,willresultinlongerpoweroutagesandmorechallengingsafetyissues.Thesetransformerstakemoretimetoaccessandservice,andmaygetblockedbycustomerstorageandsnow.
Transformersshouldbediscretelylocatedorscreenedwhileprovidingsafeaccessibilityforoperation,maintenance,removal,andinstallation.Transformerareas should not be used for exterior storage purposes. Location and screening of transformers in the downtown is addressed on a site specific basis,requiringapprovalbyTEDandDPU-E.
Image 25: Thepreferredlocationforatransformerisonarearfacadewhereadequateserviceaccessisprovided.
DowntownCoreandSecondaryDowntownAreas Page18
I. Signs
I.1.GraphicConsiderations
1. Avoidexcessiveanduncoordinateduseofsigncolors.Colorsshouldbelimitedtonotmorethanthreeonasinglewallorprojectingsign.
2. SignsonadjacentstorefrontsintheDowntownCoreshouldbedistinctyetcomplementaryinsize,styleandcolor,particularlyforsignsonasinglebuildingwithmultiplestorefronts.
3. Avoidcrowdedlettering,poorcontrastortypefacesthataredifficulttoread.4. Simpleandhighlylegibleletteringorlogosarepreferredonawnings.
I.2.SignType&Material
1. Thesize,material,colorandshapeofsignsshouldcomplementthearchitecturalstyleandscaleofthebuilding.2. Woodsigns,ifused,shouldbeofhighqualitywithhand-carvedorengravedletteringandasmooth,painted
orsealedfinish.3. Letter-typesignswithindividuallettersthatareaffixedtothebuildingexteriorarepreferred.4. ConsidertheuseofdecorativeprojectingorbladesignsintheDowntownCore.Projectingorbladesignsshould
becoordinatedwithabuilding’sfaçadedesign.
Image 26: Coordinatedapplicationofsigntypesandcolors
Image 27: Signageisofhighqualityandcomplementarytothebuildingdesign.
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I.3.Placement
1. Designwall-mountedsignsasanintegratedcomponentofthebuildingfaçade.2. Donotallowwallsignstocoverimportantarchitecturaldetails.3. Installsignssoastoavoidorminimizedamagetoabuildingfaçade.
I.4.Illumination
1. Directilluminationofwall-mountedsignagebyexteriormountedlightfixturesispreferredinthedowntown,assuchlightingallowssignstoappearasanintegralpartofthebuilding’sfaçade.
2. Ifwall-mountedsignageusesindividuallyilluminatedletters,“halo”orbacklitilluminationispreferred.Channel,orinternally-lit,lettersarealsoacceptable.
3. DonotinstallIlluminatedsignage(e.g.,boxsignage,barebulbs)alongtheRiverwalk.
Illustration 5: Signsshouldbecomplementaryinsize,styleandplacement.
Image 29: Highqualityengravedwoodsign Image 30: Bladesignsareencouragedinthedowntown
Image 28: Individuallettersareappliedtoapaneltominimizedamagetounderlyingmasonry.Colorsarecomplementarytothebuilding.
DowntownCoreandSecondaryDowntownAreas Page20
J. Parking Facilities
1. Locatesurfaceparkinglotsbehindbuildingswherepossibleandavoidplacingnewparkinglotsatcorners.
2. Locateentrancestoprivateparkingfacilitiesonsecondarystreets(i.e.,streetswithlesspedestrianactivity)oralongtherearofthepropertyinordertoavoidpedestrianconflictsandbreaksinthestreetwall.
3. Installlandscaping,lowseatingwallsordecorativefencingalongtheedgesofsurfaceparkinglotsthatborderpublicwalkways.
4. Provideclearandsafepathwaysforpedestriancirculationatparkingdeckentrances.5. Designparkingdeckstocomplementtheexistingdowntownintermsofscale,materials,bulk,etc.6. Incorporatestores,serviceestablishmentsandotherpedestrian-orientedusesonthegroundfloor
ofallparkingdecksinthedowntown.7. Definevehicularandpedestrianentrancestoparkingfacilitiesthroughsignageandlandscaping.8. Design parking decks such that rooflines and floor level articulations are parallel to the street.
Rampingandinclinesshouldoccurwithinthestructureorontheinterioroftheblock.
Image 31:Useoflowwallsandlandscapescreeningtoseparatesurfaceparkingfrompublicwalkways(RiverwalkLot,MainStreetandJacksonAvenue)
Image 32:PedestrianwaysandvehiclecirculationareclearlydelineatedinthevicinityoftheVanBurenDeck.
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K. Special Consideration for Sites Under Construction
1. Maintainsafeandcomfortablepedestrianwaysonallsidesoftheprojectsiteabuttingapublicright-of-way.
2. Considerprojectphasingtominimizevisualdisruptionsandavoid“pedestrian dead zones”inthedowntownarea.
3. Paint or finished facades that will one day adjoin another building (i.e., aninteriorsidefaçade intheDowntownCore)toprovidecompatibilitywiththeremainderofthedowntownandthedowntownarea.Unfinishedbareconcretewallsthatareexposedshallbeavoided.
4. Whereasiteisexpectedtoremainunfinishedforanextendedperiodoftime,considertemporaryusesthatwillenlivenandbeautifythearea.5. Establish turf grass on sites pending development within 30 days of the structure being razed, unless a building permit has been obtained
orconstructionhascommenced, inordertosoftentheappearanceofvacantland,minimizedust,andreducedistractionstothedowntownambience.
6. Removestandingwater,debris,litter,brokenconcrete,brokenasphaltandotherdebrisfromsitespendingdevelopmentorunderconstruction.7. Ensurethatconstructionsitesareproperlysecuredandsupervisedforsafetypurposes.
Pedestrian Dead Zones: typically lack the appropriate landuses as well as safe and interesting pedestrian walking routesthatconnectthemtotherestofthedowntownandmakethemattractivedestinationsforpedestrians.
TransitionalUseAreas Page22
Standards for Transitional Use Areas
A. Architectural Style, Building Aesthetics & Materials
BuildingheightandbulkinthetransitionaluseareaisregulatedbytheZoningOrdinance(Section6)oftheNapervilleMunicipalCodeandguidedbySection 3 Land UseofNaperville Downtown2030,aswellasthestandardsthatfollow.
1. Allnewbuildingsshallberesidentiallystyledtoblendwiththecharacterofthesurroundingneighborhoods.
2. Residential roof forms(e.g.,gable,hip)arepreferred.Fauxvariationsmaybeappropriatetoaccommodaterooftopmechanicalunitshiddeninrecessedportionsoftheroof.
3. Brick, stone and horizontal siding (wood or fibercement)arethepreferredmaterialsfornewbuildingsorbuildingrehabilitationinthetransitionaluseareas.
4. Architectural asphalt or wood shingles are thepreferredroofingmaterials.
5. Buildingcolorsshouldfollowatraditionalorearthtonepalette.
6. Designaccessorystructures(e.g.,detachedgarages,sheds)tomatchtheprincipalstructureinmaterialandstyle.7. Considersidevents,groundmountedmechanicalunitsorinteriorinstallationasalternativestorooftopmechanicalinstallationasappropriate.All
mechanicalunitsshallbescreenedfromviewincludingrooftopmechanicalunits,whichshallnotbevisiblefromanyfaçade.
B. Landscaping & Screening
1. Selectfencesthatarecompatiblewitharesidentialneighborhood.Lowdecorativemetalorwoodpicketfencingisacceptablealongthefrontandcornerside;board-on-boardwoodispreferredforscreeningpurposes.
2. Design landscaping to complement a residential neighborhood, providing four-season interestthroughinclusionofevergreen,deciduousandperennialspecies.
Image 33:Residentially-styledcontemporarybuildinginthetransitionalusearea
Image 34:Historicresidentialstructuresmayadaptedforofficesinthetransitionalusearea
Image 35:Seasonallandscapingandlowpicketfencesareappropriateintransitionalareas.
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C. Off-Street Parking Facilities & Exterior Lighting
1. Provide cross-access between off-street parking facilities through reservation of cross-accesseasements,agreementsorshareddriveways.
2. Buffer off-street parking facilities with fencing and landscaping.Where transitional use propertiesabutresidentiallots,usefencesandheavylandscapingtopreventlightandsoundtrespassfromday-to-dayoperationsandautomobiles.
3. Donotusepolelightsforanyoff-streetparkingfacilityinthetransitionaluseareas.Ifexteriorlightingisrequiredforoff-streetparkingareas,buildinglightingand/orpedestrianbollardsmaybeprovided.
4. Install shields on exterior lighting sources to minimize glare. Accent lighting may be excluded,providedthatlightwillnotdirectglareontoadjacentproperties.
D. Signs
1. Selectsignagethatiscomplementarytothebuildingarchitectureindesignandmaterials.2. Highqualitywoodsignmaterialsarepreferred.Illuminationshouldbeavoided,unlessprovidedby
directexternalsources.3. Projectingsignsareacceptableinthetransitionalusearea.
Image 36:Landscapehedgescreeningforsurfaceparkinglot.
Image 37.Acceptablesignstyleandmaterialsinthetransitionalusearea.
BuildingsofHistoricInterest Page24
Buildings of Historic Interest*
Theobjectiveofthesestandardsisnottopreventorcontrolchange,butrathertoencouragesensitiveandappropriatealterationsthatenhancethedowntownappearanceandexperience.
1. Retain,restoreorreconstructthedistinguishingfeaturesofdowntown’solderbuildings,particularlydecorativecornices,columns,reliefsandothersignificantfaçadedetailing.
2. Designbuildingimprovementsandadditionstoreinforceandenhancetheoriginalarchitecturalcharacteristicsofabuildingratherthanapplynewordifferentstylistictreatments.
3. Wheneverpossible,maintainandrestoreoriginalbuildingmaterials.4. Where original features have been covered up, buildings should be closely examined and old
photographsreviewed(iftheyareavailable)priortoundertakingsignificantimprovements.5. Inmostcases,retain,restoreorreconstructtheoriginalrooflineandcornicetreatmentofexisting
buildings.6. Donotpaintceramictile,terra-cotta,brick,stoneandglasssurfaces,unlesspaintalreadyexistson
thesesurfaces.7. Maintain window size and configuration on buildings where existing windows are important
architecturalfeaturesinabuilding’sfaçadeandparticularlyonupperstories,.8. Retainorreplacehistoricwoodenbulkheadsoncommercialstorefrontsinkind.9. Ensurethatnewmaterials, includingthecolor,sizeandfinishofbrickandstone,arecompatible
witholderexistingmaterials;newmortarsshouldalsobecompatibleincomposition,color,textureandprofile.
10. Selectnewdoorsthatarecompatiblewiththearchitecturalstyleandcharacterofthefacade.Woodorpaintedmetalwithlargeglasspanelsaretraditionaldoorstyles.
11. Avoid the use of Dry-vit and similar exterior surface materials; in particular, do not use thesematerialstoconcealorcoverupimportantexistingfeaturesofabuilding’sfaçade.
12. Use color to unite the elements of a facade and to highlight important features like historicdetailing,interestingdesignmotifsandspecialcornicetreatment.
*Property owners seeking a tax freeze or other state/private incentive funding should consult the Secretary of Interior Standards
for Rehabilitation.
Image 38: Historicdecorativecornice
Image 39: Rooflinedetailsenhancebuildingcharacterandgivecluestothecommunity’spast
Image 40: Historicwoodenbulkhead
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Before: Amodernmetalfacadewasappliedoverthehistoricbuildingstorefront.
After: Arestaurantrenovationresultedinrestorationoftheoriginalfacade.Originalexteriorbuildingdivisionsanddecorativefeatureswereretained.
Image 43: DISCOURAGEDmodificationofahistoricbuilding(materials,windows,alterationofarchitecturalstyle).
Image 41: Decorativewindowhoodsandcornicebrackets.
Image 42: Ornamentalmasonryfacadedetailing.
Illustration 6: Historicbuildingrenovationinthedowntown
NapervilleDowntown2030Planning the Downtown Experience