BS EN 1993-1-9:2010
Following publication of the EN, there is a period allowed for national calibration during which the National Annex is issued, followed by a coexistence period of a maximum 3 years. During the coexistence period Member States are encouraged to adapt their national provisions. Conflicting national standards will be withdrawn by March 2010 at the latest. BS EN 1993-1-9 will partially supersede BS 5400-10 and BS 7608 which will be withdrawn by March 2010. BS 7608 is being retained as it covers steel structures outside the scope of the Eurocode standards.