b'BUILDING CODE BUILDING CODEThese broad objectives are clearly artic- In British Columbia, nearly all building ulated in Division A and are fashioned around statements that identify unde-sirable situations and their consequences, which the Code aims to avoid occurringconstruction is governed by the British Columbia inbuildings. 10 Theseobjectivestate-ments aim to limit the probability of anundesirablesituationorunaccept- Building Code (the Code), an adaptation of able risk and are what the Code refers to as entirely qualitative. As such, they are not intended to be used by them- the National Building Code of Canada (NBC).selvesfordesigningorapprovingthe construction of a building.Because the Code does not deal with quality(whichislefttoregulationsor standardsthatindustryoftendevelops and administers), it is bereft of any state-ments about best practices. Rather, theCOMMERCIAL,CANADASCode permits certain kinds of materials anddirects,inthebroadestofterms,1how they can be arranged to satisfy the#minimumrequirementsestablishedbyINDUSTRIALNational Interior Protection theObjectives.Wherestructuralloads impact the design and construction of& NATIONWIDEspecialist for the past 15 yearsbuildingenclosuresystems,theCode provides guidance in Division B and inSERVICES!the appendices.Prescriptive or Performance-based?Until December 2018, the Code offered twopathsbywhichadesigncould conform to its requirements: the prescrip-tivepathandtheperformance-based path. The prescriptive pathway was less onerousthantheperformance-based1-877-365-1915 www.interiortarpprotection.capath former because it focused on the characteristicsofindividualcompo-nentsorsystemsofabuilding,not onhowthebuildingasasystemofRoof Consultingsystems performed. For example, insu- Serviceslation tables specified minimum thermal resistancevalues,dependingonwhere theinsulationwasinstalled,buttheseThird Party Rooftop Quality AssurancerequirementswerenotintegratedwithSubstrate Structural TestingthedesignandminimumrequirementsAdhesion & Fastener Testingfor the heating and ventilating systemsThermal & Electronic Scanningof the building (Part 10), nor with theRoof Condition Assessmentsrequirementsforaircontrols(Part5).Roo\x1fng Design & Speci\x1fcationsProject Management & AdministrationAir barrier systems had to be contin- Asbestos TestinguousbetweenvariousmaterialsandPlaza Decks & Parkadessystems,buttheCodeappearedtobeRoof Anchor Design & Testingsilent on how to verify continuity. Green Roofs & PhotovoltaicWith the release of the 2018 Code, all of that changed. The prescriptive option 10 BCBC, Preface: Objective-Based Code Format. https://free.bcpublications.ca/civix/document/id/public/ 604.295.8070 | vancouver@ircgroup.combcbc2018/bcbc_2018pre www.rcabc.org l15'