b'BUILDING CODEProtected roof systems can be built for energy efficiency (image source: Roofing Practices Manual). Credit: RCABC.To some extent, everything hinges onand then provides prescriptive require- So, begin at the beginning:wind. A roof that is displaced by wind ismentsinSentences(4)and(5)exclu- 1.Determine the Specified Wind Loads a roof that will not resist precipitation,sivelyforexposedmembranerooffor the roof (Div. B, Part 4)no matter what form it takes. Therefore,systems.So,whenArticle5.2.2.2.says2.Identify the dimensions of the prin-alwaysbeginwiththefirstprinciples(and I paraphrase) that every roof mustcipal roof zonescorners, edges and ofroofdesign,whicharealwaysthebe designed to resist wind load (Ref.field (Div. B, Part 4)same regardless of the primary roofingSentence(1)(b)),itdoesntmeanonly material. Remember that Article 5.2.2.2.3.Design the roof system to resist the (Division B) begins with general require- exposed sheet membrane roofs; it meansSpecified Wind Loads for the roof mentsforwind-resistantroofdesign,all roofs. (Div. B, Part 5)Roof Consulting, Design & InspectionRoof Forensic, Surveys & AuditsRoof Specification & TenderingRESIDENTIALCOMMERCIALINDUSTRIALPlumbing and HeatingStructural SteelFlat and Steep RoofingCladding Steel Fabrication and InstallationHVACMechanical ContractingEngineering Serving BC & Western TerritoriesIndustrial ConstructionIndustrial Maintenancesince 1991 245 - 3rd Street, Kitimat, BC V8C 2N8 Mons AasePh: 250-632-6859|Fax: 250-632-2101RCABC - Accepted Observation Firm President, RRO, TQ, IPEmail: 101first@cimsltd.comIIBEC - Member(250)6143369 www.101industries.com aaseroof@outlook.comToll Free: 1-877-632-685918lROOFINGBC l SUMMER 2022'