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Traditionally designed prefabricated stairs made of solid wood. Specifications and requirements Ingestion-build-159183 distribution systems having a nominal1 Scope This European Standard gives specifications and requirements for prefabricated stairs made of solid wood, i. e. where the components contributing to the fulfilment of mechanical resistance and stability characteristics are made of solid wood. These stairs are traditionally designed. NOTE 1 If the filling of the guarding does not contribute to the mechanical stability and resistance, the used material is not relevant. NOTE 2 Examples of