Precast concrete products. Ribbed floor elements Ingestion-build-48348 BS EN 843-5 is the

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Precast concrete products. Ribbed floor elements Ingestion-build-48348 BS EN 843-5 is the1 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