4.11 - End caps
From TGN Online
Where trapezoidal (TR50, TR60+ or TR80+) decking sheets end at the perimeter of the building or at internal voids, the ends of the sheets are sealed with 0.7mm gauge galvanised end caps or polystyrene inserts. These end caps will also be required where you have a change in span direction (refer to Fig 4.11a). Due to the small re-entrant rib size of the R51+ profile, sheets are typically sealed using tape or expandable foam.
Refer to SMD Data sheet SMD.DOD.187 - TR End Closure Detail
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