This Standard applies to the design of buildings and other civil engineering works in concrete with steel fibres and or polymer fibres according to SS-EN 14889-1 and SS-EN 14889-2. The Standard does not cover glass, carbon, basalt or any other type of fibres. This Standard is intended to be used in conjunction with SS-EN 1992-1-1 Eurocode 2: Design of structures – Part 1-1: General rules and rules for buildings. NOTE SS 812310 is not a Eurocode. The following subjects are dealt with in this Standard: Section 1: General Section 2: Basis of design Section 3: Materials Section 5: Structural analysis Section 6: Ultimate limit states (ULS) Section 7: Serviceability limit states (SLS) Section 8: Detailing of reinforcement and prestressing tendons - General Section 11: Lightweight aggregate concrete structures Annex O: Calculation of strains and stresses in bending Annex P: Production and conformity control of fibre concrete Annex Q: Execution control of fibre concrete Annex R: Expected Coefficient of Variation for beam tests according to SS-EN 14651 Annex S: Fibre concrete, statically indeterminate structures, and magnification factors