This part of ISO10721 establishes the principles and general rules for the use of steel materials and design of steel structures in building. NOTE 1 The degree of reliability should be as specified in national codes. In the establishment of design safety factors, due consideration should also be given to ISO 10721-2 for fabrication of steel structure. This part of ISO10721 is also applicable to bridges, off-shore, and other civil engineering and related structures, but for such structures it may be necessary to consider other requirements. This part of ISO10721 does not cover the special requirements for steel structures in corrosive environments beyond normal atmospheric conditions and corrosion protection with regard to fatigue design. This part of ISO10721 does not cover the special requirements of seismic design. For welded connections ad for structures subject to fatigue, special considerations regarding the scope of this document are presented in 8.9 and 10.1 respectively. NOTE 2 Rules ad recommendations regarding composite steel and concrete structures and fire safety of steel structures will subsequently be issued as separate International Standards.