3.3

Cover

Cover

Designer

Designer
  • Specification of minimum cover (+ Nominal ) (EN 1992/I.S. EN 206 NA )
    • For Durability
    • For Fire resistance
  • Cover to main bars / cover to links
  • Cover to unformed surfaces
  • Prestressing steel cover
  • Execution class
  • Curing class
  • Cover versus concrete mix trade-off (EN 206 NA

Builder

  • Spacer types/restrictions
  • Reinforcement density
  • Impact on compaction (e.g. poker size)
  • Cover checking regime (pre- & post- pour) (Execution class)
  • Concrete mix implications (e.g. aggregate size)

Producer

  • Limitations on use of Additions : % in mix; declaration on delivery docket
  • Aggregate size limitations
  • Selection of suitable materials (in accordance with EN 206)
    • Cover versus mix design trade-off (XC class)

Further Guidance

Main Standards – Reference

I.S. EN 1992-1-1

I.S. EN 206

See NA

Other Guidance Documents

I.S. EN 1992

I.S. EN 206 National Annex

TII DN-STR-03012 Design for Durability, Appendix B