GENERAL POLICY FOR HIGHER BUILDINGS · At noon, shadow falls mostly north over the St Paul’s site...
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18 1157 Burrard Street | Rezoning Application | December 21st 2018 PROPOSAL commied. Further, the corner plaza provides a welcoming gateway to Davie Village and represents an important addion to the area’s open space network. Migate adverse microclimate effects The project team has met with an Environmental Engineering team to iniate work on migaon of any microcli- mate effects. Owing to relavely low winds in Vancouver, the microclimate effects are ancipated to be modest, and migated by strategically located canopies and similar features. Minimize Shadowing and View Impacts The project locaon on the north side of Davie Street and West side of Burrard Street means that shadow impacts are modest and move rapidly across Davie Street in the early-mid morning. At noon, shadow falls mostly north over the St Paul’s site (St Paul’s Hospital is ancipated to move to False Creek Flats in the window of compleon of the project), then over Burrard Street only in late aſternoon. No shadow falls on Nelson Park or other parkland or public open space in the vicinity between the Spring and Autumn equinox. Public view impacts are modest owing to the slender building profile as seen coming up Burrard Street. With respect to the B1 and 12.1 View Cones, the project adjoins them as they pass north across the edges of the site. For View Cone 3.2.1, the project punctuaon proposes to complement the skyline as viewed from Queen Elizabeth Park. Given the small floorplate size at the building’s upper levels the private view impacts to other buildings in the neighbourhood are modest. Typically, buildings looking north towards the Downtown will situate 1157 Burrard within a backdrop of other downtown towers. Buildings looking south and east will see the towers of Yaletown in the background. 1157 Burrard: General Policy for Higher Buildings Establish a significant and recognizable new benchmark for architectural creavity and excellence The project proposes a new benchmark for site and city-specific architectural creavity and excellence through several disncve measures. The west façade is proposed as a dynamic ever-changing mosaic responding to solar movement. In the morning when no direct sun falls on the elevaon, the façade forms a sleek glass envelope ani- mated by balconies. As the sun comes around to the south and west, exterior vercal solar control blinds start to animate the façade, with the sun exposure lowering them sequenally. As the sun rotates further to the west, the blinds gradually form a veil, a pixilated abstracon of the Westcoast landscape ground to sea to sky. As aſternoon turns to evening, the blinds retract once again to reveal the glowing glass envelope by night, as lights illuminate from the inside. The blinds have both an aesthec and a sustainable design role, reducing solar heat gain and glare from low angle west sun. The concept is inspired by the Electra, the former BC Hydro building on Burrard Street. Electra makes explicit reference to the Westcoast landscape in its design and ornamentaon, a major innovaon at the me the tower was built. In addion to the dynamic nature of the west façade--visible from both Burrard Street and Davie Village-- the building is shaped like a flaron as you approach the Downtown along Burrard Street. Consequently, the build- ing is exceponally slender compared to other towers. The balconies along the leading edge further animate this impression, by faceng towards the west as the tower rises. This shape forms an invitaon towards Davie Village and the West End as the tower addresses ceremonial Burrard Street. At grade, the corner plaza provides a public desnaon, welcoming visitors to Davie Village. The building canopy gathers rainwater and directs it to a small symbolic wetland at the corner, providing a pleasant place to gather and evoking the Westcoast landscape concept of the building. The project elevators offer outlook to Burrard Street in the podium and at the rooſtop, providing spectacular views out for building users. At the rooſtop a viewing plat - form forms part of the Residenal Amenity with vistas to the fireworks of English Bay. Demonstrate leadership and advances in sustainable design The vercal solar blinds provide visible evidence of the passive sustainable design character of the building. While solar and glare control is important for user comfort and energy use reducon, the project features other passive and acve systems contribung to Sustainable Design leadership. The building envelope features high perfor- mance triple glazing in the podium, which also provides acouscal remediaon at this busy traffic and nightlife corner. To diminish thermal bridging, the terracoa façade system on the lower levels of the building features exterior insulaon and intermient clips—not connuous z-girts--ed back to the interior wall structure. For the same reason, the balconies are wrapped in insulaon. Heang and cooling are provided by high performance fan- coils, linked to a high-efficiency central plant ulity. This is ancipated to be a geoexchange field, supplemented by rooſtop and garage entry level heat exchangers. Extensive and Intensive green roofs will slow down the movement of rainwater on the site. Rainwater will then be gathered from rooſtops to a cistern and filtraon tank, providing clean water back to the corner plaza wetland and swimming pool. Provide a lasng and meaningful legacy including significant community benefits The project proposes a public child Daycare facility at the third floor, including indoor and outdoor play and learn- ing areas. At the second floor, the dedicaon of office space to a community use is being explored but is not GENERAL POLICY FOR HIGHER BUILDINGS
Transcript of GENERAL POLICY FOR HIGHER BUILDINGS · At noon, shadow falls mostly north over the St Paul’s site...
18 1157 Burrard Street | Rezoning Application | December 21st 2018
PROPOSAL
committed.Further,thecornerplazaprovidesawelcominggatewaytoDavieVillageandrepresentsanimportantadditiontothearea’sopenspacenetwork.
Mitigate adverse microclimate effects
TheprojectteamhasmetwithanEnvironmentalEngineeringteamtoinitiateworkonmitigationofanymicrocli-mateeffects.OwingtorelativelylowwindsinVancouver,themicroclimateeffectsareanticipatedtobemodest,andmitigatedbystrategicallylocatedcanopiesandsimilarfeatures.
Minimize Shadowing and View Impacts
TheprojectlocationonthenorthsideofDavieStreetandWestsideofBurrardStreetmeansthatshadowimpactsaremodestandmoverapidlyacrossDavieStreetintheearly-midmorning.Atnoon,shadowfallsmostlynorthovertheStPaul’ssite(StPaul’sHospitalisanticipatedtomovetoFalseCreekFlatsinthewindowofcompletionoftheproject),thenoverBurrardStreetonlyinlateafternoon.NoshadowfallsonNelsonParkorotherparklandorpublicopenspaceinthevicinitybetweentheSpringandAutumnequinox.
PublicviewimpactsaremodestowingtotheslenderbuildingprofileasseencomingupBurrardStreet.WithrespecttotheB1and12.1ViewCones,theprojectadjoinsthemastheypassnorthacrosstheedgesofthesite.ForViewCone3.2.1,theprojectpunctuationproposestocomplementtheskylineasviewedfromQueenElizabethPark.
Giventhesmallfloorplatesizeatthebuilding’supperlevelstheprivateviewimpactstootherbuildingsintheneighbourhoodaremodest.Typically,buildingslookingnorthtowardstheDowntownwillsituate1157Burrardwithinabackdropofotherdowntowntowers.BuildingslookingsouthandeastwillseethetowersofYaletowninthebackground.
1157 Burrard: General Policy for Higher Buildings
Establish a significant and recognizable new benchmark for architectural creativity and excellence
Theprojectproposesanewbenchmarkforsiteandcity-specificarchitecturalcreativityandexcellencethroughseveraldistinctivemeasures.Thewestfaçadeisproposedasadynamicever-changingmosaicrespondingtosolarmovement.Inthemorningwhennodirectsunfallsontheelevation,thefaçadeformsasleekglassenvelopeani-matedbybalconies.Asthesuncomesaroundtothesouthandwest,exteriorverticalsolarcontrolblindsstarttoanimatethefaçade,withthesunexposureloweringthemsequentially.Asthesunrotatesfurthertothewest,theblindsgraduallyformaveil,apixilatedabstractionoftheWestcoastlandscapegroundtoseatosky.Asafternoonturnstoevening,theblindsretractonceagaintorevealtheglowingglassenvelopebynight,aslightsilluminatefromtheinside.Theblindshavebothanaestheticandasustainabledesignrole,reducingsolarheatgainandglarefromlowanglewestsun.TheconceptisinspiredbytheElectra,theformerBCHydrobuildingonBurrardStreet.ElectramakesexplicitreferencetotheWestcoastlandscapeinitsdesignandornamentation,amajorinnovationatthetimethetowerwasbuilt.
Inadditiontothedynamicnatureofthewestfaçade--visiblefrombothBurrardStreetandDavieVillage--thebuildingisshapedlikeaflatironasyouapproachtheDowntownalongBurrardStreet.Consequently,thebuild-ingisexceptionallyslendercomparedtoothertowers.Thebalconiesalongtheleadingedgefurtheranimatethisimpression,byfacetingtowardsthewestasthetowerrises.ThisshapeformsaninvitationtowardsDavieVillageandtheWestEndasthetoweraddressesceremonialBurrardStreet.
Atgrade,thecornerplazaprovidesapublicdestination,welcomingvisitorstoDavieVillage.Thebuildingcanopygathersrainwateranddirectsittoasmallsymbolicwetlandatthecorner,providingapleasantplacetogatherandevokingtheWestcoastlandscapeconceptofthebuilding.TheprojectelevatorsofferoutlooktoBurrardStreetinthepodiumandattherooftop,providingspectacularviewsoutforbuildingusers.Attherooftopaviewingplat-formformspartoftheResidentialAmenitywithvistastothefireworksofEnglishBay.
Demonstrate leadership and advances in sustainable design
Theverticalsolarblindsprovidevisibleevidenceofthepassivesustainabledesigncharacterofthebuilding.Whilesolarandglarecontrolisimportantforusercomfortandenergyusereduction,theprojectfeaturesotherpassiveandactivesystemscontributingtoSustainableDesignleadership.Thebuildingenvelopefeatureshighperfor-mancetripleglazinginthepodium,whichalsoprovidesacousticalremediationatthisbusytrafficandnightlifecorner.Todiminishthermalbridging,theterracottafaçadesystemonthelowerlevelsofthebuildingfeaturesexteriorinsulationandintermittentclips—notcontinuousz-girts--tiedbacktotheinteriorwallstructure.Forthesamereason,thebalconiesarewrappedininsulation.Heatingandcoolingareprovidedbyhighperformancefan-coils,linkedtoahigh-efficiencycentralplantutility.Thisisanticipatedtobeageoexchangefield,supplementedbyrooftopandgarageentrylevelheatexchangers.ExtensiveandIntensivegreenroofswillslowdownthemovementofrainwateronthesite.Rainwaterwillthenbegatheredfromrooftopstoacisternandfiltrationtank,providingcleanwaterbacktothecornerplazawetlandandswimmingpool.
Provide a lasting and meaningful legacy including significant community benefits
TheprojectproposesapublicchildDaycarefacilityatthethirdfloor,includingindoorandoutdoorplayandlearn-ingareas.Atthesecondfloor,thededicationofofficespacetoacommunityuseisbeingexploredbutisnot
GENERAL POLICY FOR HIGHER BUILDINGS
14 1157 Burrard Street | Rezoning Application | December 21st 2018
CONTEXT
VIEW CONE PARAMETERS
151157 Burrard Street | Rezoning Application | December 21st, 2018
CONTEXT
VIEW CONE CONFORMITY
