This Standard sets out the method for the making and curing of flexure test specimens of concrete sampled in the laboratory or in the field.NOTES:1 This Standard may involve hazardous materials, operations, and equipment. This Standard does not purport to address all of the safety problems associated with its use. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before use.2 Relevance of this Standard to fibre-reinforced concrete is to be further investigated. Committee BD/42 is seeking information from all interested parties.