b'RESILIENCYFunctionalstatements(Part3ofrenewal. Furthermore, for each renewalabsorb, recover from and resist deteri-Division A) likewise apply to all build- to be successful, the roof (in all aspectsorationcaused byconditionsexpected ingscoveredbytheCode.Theseareof its design and construction) must bethroughout the roofs service life.statementsgroundedintheobjectivesamenable to renewal without compro-andaregroupedbysubjectmatter.misingtheobjectivesandfunctionalYOU SAW THAT COMING,Functional statements are the driver ofstatements of the Building Code. DIDNT YOU?acceptable solutions in Division B. EachResilienceasadesirablequalityinWe used to be able to look backward to statement begins with To, as if it werearoof,then,meansthataroofmustpredict the weather. Our forecasts rested thecompletionofthesentencethat begins with, A building or its elementsbedesignedandconstructedwiththeon the well-established pattern that what shallbedesignedandconstructed.capacity to be periodically renewed, andhas happened will continue to happen. Statement F80 is brief and reads, simply,insobeingrenewed,mustbeabletoNot any morenow, we must peer into Toresistdeteriorationresultingfrom expected service conditions.This little statement is packed with potential for a broad range of interpre-tation. While nit-pickers will poke at the possible meanings of resist or (espe-cially) deterioration, it is hard to avoid theunsettlingpotentialofthephrase expectedserviceconditions.What exactlyshouldweexpect,andwhen should we expect it? We already know thatourclimateischanging(setting asidethecontentioussubjectofwhy it is happening), and that the change is dynamic.Thismeansthatwecanno longerdesignandconstructbuildings based on a steady state climate that yields patterns from the past. Instead, we must consider what the future may bringand design for a Canada we cannot yet fully imagineto minimize disturbance and damage as the climate continues to change dynamically. 6Resistancetodeteriorationmatters foravarietyofreasons.First,dete-riorationcompromisessomeofthe coreobjectivesoftheBuildingCode thatprotecthumanhealthandsafety. Secondly, deterioration results in waste, much of it carbon-based. Does it make any sense to build air-tight, carbon-neu-tral buildings if, at the same time, those buildings are easily damaged or destroyed by expected service conditions?Atthispoint,weareclosertoaTRS BUILDING good definition, but there is one moreENVELOPE CORP.thing. Of all the assemblies that usually comprise a building, the roof is perhapsTOMTAR ROOFINGthe only assembly that is renewed one or& SHEET METAL LTD.more times during a buildings lifespan. If a roof is to continually possess theUnmatched Industry Experience.capacity to resist deterioration resulting fromexpectedserviceconditions,Serving the Interior & Western Canadaitmustbeabletodothataftereach www.rcabc.orgl17'