This document specifies the requirements, the basic performance criteria and evaluation of conformity for precast ribbed floor elements made of reinforced or prestressed normal weight concrete, used in floors or roofs. The ribbed floor elements consist of a top and/or bottom slab and one or more (usually two) ribs. Transverse ribs may also be present. Examples of precast ribbed floor elements considered in this document are shown in Annex A. Specific requirements for minor floor elements are listed in Annex B. This document covers terminology, performance criteria, tolerances, relevant physical properties, test methods and aspects of transport and erection. This document does not cover load-bearing capacity determined by testing. The evaluation of conformity specified in this standard refers to the completed precast elements which are supplied to the market and covers all the production operations carried out in the factory. For design rules and resistance to fire, reference is made to EN 1992-1-1 and EN 1992-1-2. Additional complementary rules are provided where necessary. 4.3.3 and 4.3.4 include specific provisions resulting from the application of EN 1992-1-1, and EN 1992-1-2 rules made specific for the concerned product. The use of these provisions is consistent with a design of works made with EN 1992-1-1 and EN 1992-1-2. The committee responsible for this standard is NA 005-07-08 AA "Betonfertigteile (SpA zu CEN/TC 229") ("Precast concrete products (Mirror Committee of CEN/TC 229)") at DIN.