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This British Standard is the official English language version of EN 1998-6:2005. It supersedes DD ENV 1998-3:1997 which is withdrawn.

For the design of structures in seismic regions the provisions of this standard are to be applied in addition to the provisions of the other relevant Eurocodes. In particular, the provisions of the present standard complement those of Eurocode 3, Part 3-1 " Towers and Masts " and Part 3-2 " Chimneys", which do not cover the special requirements for seismic design.
(1) The scope of Eurocode 8 is defined in EN 1998-1:2004, 1.1.1 and the scope of this Standard is defined in (2) to (4). Additional parts of Eurocode 8 are indicated in EN 1998-1:2004, 1.1.3.
(2) EN 1998-6 establishes requirements, criteria, and rules for the design of tall slender structures: towers, including bell-towers, intake towers, radio and TV-towers, masts, chimneys (including free-standing industrial chimneys) and lighthouses. Additional provisions specific to reinforced concrete and to steel chimneys are given in Sections 5 and 6, respectively. Additional provisions specific to steel towers and to steel guyed masts are given in Sections 7 and 8, respectively. Requirements are also given for non-structural elements, such as antennae, the liner material of chimneys and other equipment.
(3) The present provisions do not apply to cooling towers and offshore structures.
(4) For towers supporting tanks, EN 1998-4 applies.

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