Deck Specification


Updated from the original R51 product in 2018, this profile is available in S350 and S450 grades to provide the designer greater flexibility. R51+ is a traditional re-entrant profile commonly used on inner city multi-storey projects, where the structural zone and storey height is reduced, due to the relatively thin slab depth required to achieve a typical one hour fire rating.


  • 102mm minimum slab depth
  • Optimised to maximise structural efficiency of steel
  • 150mm trough spacings provide flexibility for stud placement
  • TAB-Deck™ fibre concrete solution


  • 0.8mm
  • 0.9mm
  • 1.0mm
  • 1.2mm


  • 600mm cover width
  • 52mm deep

Steel Grade

  • S350
  • S450
3D R51 Plus


  • Galvanised (Z275)
  • HD (ZM310)