b'BUILDING CODE5) Thedesignofthemembraneroof assembly should identify the Specified Wind Loads, and ought to provide clear instructions for howAlone, no one succeeds.theroofmustbeconstructed toresistthoseloads,sincethe roof forms part of the buildingTogether, they makeenclosure that separates different 6)environments 7 . specificationsforgreat things happen.Drawingsandtheproposedworkmustbe complete by the time the building designissubmittedwiththe applicationtobuild(thatis, beforeanyonebidsonascope of work).NoneoftheaboveprecludestheCOMMERCIAL,CANADASDesignAuthorityfromassigningtothe1constructor the task of selecting a suit- #able roofing system using the optionsINDUSTRIALNational Interior Protection provided in Article 5.2.2.2. (Division B, Part 5, Section 5.2). However, assigning& NATIONWIDEspecialist for the past 15 yearsthis aspect of the design is not a panacea for each project. As we will see in forth-coming articles, what the Design AuthoritySERVICES!assignstotheroofingcontractor proportionatelyimpactsthelookand performance of the end product.Big RocksLetusstopforamomenttodigest afewthingslearnedfromthisand the previous articles. First, it helps to1-877-365-1915 www.interiortarpprotection.caremember that the 2018 Code shifted away from a prescribed model to perfor-mance-based requirements. Within that frameworkwecanidentifytwoBig Rocks of roof design: Roof Consulting1) All roofs (regardless of how theyServices are secured) must be designed to resist Specified Wind Loads, which are structural in nature.Third Party Rooftop Quality Assurance2) RoofsthatarenotballastedSubstrate Structural Testing mustbedesignedtoresistAdhesion & Fastener TestingSpecifiedWindLoadsusingoneThermal & Electronic ScanningRoof Condition AssessmentsofthefollowingthreeoptionsRoo\x1fng Design & Speci\x1fcations(ref.Part5ofDivisionB:Project Management & AdministrationArticle 5.2.2.2.):Asbestos TestingPlaza Decks & Parkadesa)a tested assembly. Roof Anchor Design & Testing b) an assembly with proven pastGreen Roofs & Photovoltaic performance, orc)a custom-engineered secure- ment (perhaps by using the ANSI-SPRI WD-1 wind design standard). 604.295.8070 | vancouver@ircgroup.comwww.rcabc.org l23'