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1、SuperinsulatedGeodesicDomeTheabovedome,whichwe'rerenting,isafewblocksfromthein-townlotwherewe'rebuildingourownsuperinsulatedversion.Mostdomesareoutinthecountry,butwewantedalocationwherewewouldn'thavetodriveeverywhere.It'sgreathavingalibrary,movietheater,hikingtra
2、il,postoffice,farmers'market,organicgrocery,andadozenrestaurantsallineasywalkingdistance.Herearesomepicturesoftheonewe'rebuilding.Exceptforthedormers,theroofingisinthehomestretch.Thetopskylightisnowin,andIdecidedtoputasecondlayerofice-and-water-shieldaroundthetop
3、.TheoriginalunderlaymenthadbeenoutintheweathersinceDecember.Fromtheground,italmostlooksfinishedalready:We'reusingcopper-coloredReinkealuminumshakes.Thesereflectthesun'sradiantheat,sotheystaycoolerthanasphaltshingles.Withregularshinglesyouwindupre-roofingevery20or
4、25years,addingafewtonsofasphalttothelandfilleachtime.Thisroofcouldeasilylastacentury,afterwhichthealuminumcanberecycled.Roofingadomeisquiteatask,butthiswayI'llonlyhavetodoitonce.Wide-angleinteriorshot.Pardonthemess.Wegotthisniceround-toppedfrontdoor,soImadetheove
5、rhangechoitsshape:Here'sapageabouttheearlystagesofthebuildingprocess.Sowhyasuperinsulateddome?I'vealwayslovedthelooksofdomesandthefeeloftheirinteriorspace.Thefactthatthey'restrongerandofferlesswindresistancewasalsoafactorbecausewe'reintornadocountry.Domestypicall
6、ysurvivetornadosandhurricanesthatdestroyanarea'srectangularhouses.Asfarasenergyefficiency,asphereenclosesmaximumvolumewithminimumsurface,soforagivenvolumeofspaceadomewillhavelesssurfaceareathroughwhichtoloseheat.Someofthedome'svolumeisinaccessible,butit'sstilllik
7、egettingbeautifulhighceilingswithnoenergycostpenalty.Thegeodesicdome'sstrut-baseddesignalsolendsitselftodouble-wallconstruction.Thewallcanbedesignedtoholdwhateverthicknessofinsulationyouspecify.Addenoughinsulationandyoueventuallyreachapointwhereambientheatsources
8、areenoughtokeepthehousewarm.That'sthebasicideabehindsuperinsulation.Housesarefullofelectriclights,appliances,computers,VCRs,people,pets--allofthemthrowingoffhe
