b'FEATUREWELD FASTERFIT SMARTERKEEP IT SIMPLEROBOTIC WELDINGFIGURE 1:Typical cold-formed steel roofing assembly. directions.Normal(perpendicular)directionfollowing information to the manufacturer getsdistributedthroughtheroofontocan help achieve this:More than 100 units sold!thesub-girts(orinsulation,dependingon therigidity)andthentheroofdecksandFullstructuraldesignloadsanddesign HEAVY FABRICATION purlins. Sliding snow howeverdependingcriteria: Helps achieve a unified approach in on the load magnitudeis either taken onthe determination of structural components. viathrough-fasteningoftheU-subgirtatSteel claddings impose a wind load derived the eave or, in higher snow loading cases,from components and cladding coefficients through sliding snow stiffeners.that are different to wind loads calculated for FIGURE 6 CSSBI S11-15: Insulated sheet steel roofframing members. Embed plate sample calculation sketch. assemblies is a fantastic resource for steelInsulationcompressionstrength:Load-roofingassemblies,installationtech- bearing capacity of insulation has an effect on niques and the various parts and compo- the gravitational structural capacity of subgirts.Multidimensional movementnentsassociatedherein.ThevariousSpecificationofotherstructural for mega-sized parts. components described above are shownmaterial: Specification of other common in Figure 1. Many of the indicated compo- building material such as wood should be FITTING ASSISTANT nents are proprietary and specific to theprovided as applicable (pressure-treated, roofingmanufacturer,oftendependentthickness, grade, etc.)ontestingandengineeringjudgementDetails,specificationanddesign forstructuralcapacitydetermination.Itthicknessofallroofingassembly isconsideredgoodpracticetocontactsupporting members. manufacturer design offices and enquireMechanicalattachments:Loadsand onspecificationsandassociatedtypicallocation to sprinklers, ducting system and details. An example of this would be thevent hoods must be indicated.designspecificationsforsubgirtsteelRooffallarrestandsnowguard Lose thethicknessorspacing,whichcomedownrequirements:Manufacturersoften measuring tape!tomanufacturer-specificdata(i.e.,windhavepreferredproductsandanchorage uplift pull-out capacity).methods compatible with their products. Another important aspect in steel roof assemblydesignsisthecoordinationAsdescribedabove,therearevarious between the consulting engineer and thearchitectural and engineering design provisions specialtycold-formedengineer(manu- to follow for specifying a steel roof cladding USAfacturing).Throughpractice,manufac- system.Followingthemwillensuretheend 819.693.9682 turers and consultants alike can produceusertohaveamoisture/heat-controlledroof AGTROBOTICS.COM andassembleroofingasseamlesslyassystem that is visually pleasing and durable with possible.Asanexample,providingtheoutstanding load-bearing capacities.AS38|WINTER 2023/2024 ADVANTAGE STEEL'