Double Skin Facade Case Study

 

updateofLeCorbusier'approach."Thebuildingscienceandenergyworldsarequiteworriedabouttheglassbuildingsyndrome,"shesays,addingthatarchitectshavemovedbeyondtheglassboxandarebecom-ingmoreinterestedincomplexandlayeredfacadesystems.Historydemonstratesthat,at

least

sinceJosephPaxton,build-ingdesignershavebeenfascinatedwithtranparency,What'schangedsincePaxtonbuilttheCrystalPalaceinLondonin1851andModern-ismemergedintheearly20thcenturyishowarchitectsandtheircon-sultantsachievetransparencyandhowtheymeasuresuccess.Asglasshasevolved,sohasitsexpression.TheClevelandClinicexemplifiesthisshiftasits360-bedpatienttowerappears'firmlyrootedintheBauhaustraditionwithspandrelpanelsarticulatingeachslablevel,acontinu-ousglazingsystemwrappingthecorners,andwithitsdiagridcurtain-wallsystemexplicitlyrevealed.Andyet,thisreadingrelatesonlytothebuilding'sstructuralandenvelopesystems,nottoanunderstandingoftheintangibleperformanceofthosesystems.

Transparency:LiteralandSustainable

DON'TCONFUSETHEHIGH-PERFORMANCEGLASSFACADESOFTHESENEWBUILDINGSWITHTEXTBOOKEXAMPLESFROMEARLYMODERNISM

By

RussellFortmeyer

n

1929,

whenLeCorbusiersetaboutdesigningthedouble-skinnedglasscurtainwallfortheCitedeRefugeinParis,hehadnofa-cadeconsultanttowritetheglassspecification.Itwouldn'thavematteredanyway,sincethespecwouldhavebeenoneword:dear.Twopanesofclearglassdefinedacavity,inwhichLeCOl·busierhadplannedtosupplytemperedairwithamechanicalventilationsystem.Thinkofitastransparentinsulation.However,theclienteliminatedthedoubleskin,keptthesingleglasslayersealedtight,andinsteadfedtheairdirectlyintothebuilding.Withnoreturn-airpath,itdidn'twork.Andthesinglelayerofglass,totallyexposedtothesun,failedmiserably.Yearslater,thearchitectaddedabrise-soleiltocutthesolarheatgainandpreventoccupantsfromoverheating."LeCorbusierdidn'thaveaccessto[softwarelike]Energy-Plus,"jokesfacadeconsultantGeorgeLoisos,AlA.Loisos'scommentsarepartofhisexplanationofthemyriadtoolsforspecializedanalysisheandhiscolleaguesatBerkeley,California-basedLoisos+Ubbelohde(L+U)haveappliedtobuildingdesign.EnergyPlus-the

u.s.

Depart-mentofEnergy'sfreesoftwareformodelinghigh-perform

Господи Исусе. Раздался телефонный звонок. Директор резко обернулся.

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