EN 13224:2011 – Precast concrete products – Ribbed floor elements
1 Scope
This document identifies the requirements, the basic performance criteria and evaluation of conformity for precast ribbed elements made of reinforced or prestressed normal weight concrete, used in floors or roofs.
The elements consist of a top and/or bottom slab and one or more (usually two) ribs; transverse ribs may also be present.
Some examples of precast 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.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1990:2002, Eurocode: Basis of structural design
EN 1991-1-6:2005, Eurocode 1 — Actions on structures — Part 1-6: General actions — Actions during execution
EN 1992-1-1:2004, Eurocode 2: Design of concrete structures — Part 1-1: General rules and rules for buildings
EN 1992-1-2:2004, Eurocode 2: Design of concrete structures — Part 1-2: General rules — Structural fire design
EN 13369:2004, Common rules for precast concrete products
3 Terms, definitions, and symbols
3.1 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1992-1-1:2004 and EN 13369:2004 and the following apply.
3.1.1
ribbed precast concrete element
precast unit consisting in a slab stiffened by one or more ribs
3.1.2
minor floor element
ribbed precast floor elements having limited dimensions, which are in compliance with Annex B
4 Requirements
4.1 Material requirements
For general aspects, reinforcing and prestressing steel, inserts and connectors, the relevant subclauses of EN 13369:2004, 4.1 shall apply. For constituent materials of concrete EN 206-1 applies. In particular, the ultimate tensile and tensile yield strength of steel shall be considered.
4.2 Production requirements
The production of precast ribbed elements shall comply with the requirements in EN 13369:2004, 4.2.
NOTE In addition to EN 13369:2004, 4.2.2 for cast-in-situ concrete considered to act compositely with precast units in the structural resistance (e.g. structural top layer), the minimum strength class is C 20/25.
In particular, the compressive strength of concrete shall be considered.
For minor floor elements, strength classes shall comply with B.2.3.
4.3 Finished product requirements
4.3.1 Geometrical properties
4.3.1.1 Production tolerances
Complementary to EN 13369:2004, 4.3.1.1 the following tolerances shall apply (Figure 1).
EN 13224:2011 – Precast concrete products – Ribbed floor elements