b"PRESIDENT'S LETTER (continued) doestheANSIA-108StandardfortheInstallationdetailinghowtoconstructthestructureinANSI for Ceramic Tile presume to be the place to instructA-108 may in some ways obligate the tile installation others how wall or floor structures should be con- professional to be knowledgeable or share responsi-structed to meet applicable commercial or residen- bility for the quality and performance of a structure tial building codes? Who would presume that theypreparedbymultipleprecedingtrades.Betterto should be checking the ANSI tile standard to confirmstick with what you know.the type and quality of the joist in the wood floor, or the quality, gauge and placement of metal studs in the wall? HowdoesthetilecontractorcrediblycheckforChris Walker deflection in the structure? We do not. We shouldNTCA President only be concerned with our warranty/guarantee thatVice President, David Allen Company we have properly prepared the surface to which weChairman, ANSI A-108 are applying the tile or the parts of a tile assembly.Chairman, US TAG ISO TC-189 We cannot reasonably be expected to know how theBoard of Directors ABC-VA structurewillperformorhowitwasconstructed.Voting Member TCNA Handbook Thatisthejobofthearchitect,ownerordesignVoting Member NTCA Reference Manual professional.Somefeelthatincludinginformationchriswalker@davidallen.com82020|TECH"