Steel Buildings in Europe

Part 7: Model Construction Specification 7 - 38 Proposed Clauses Commentary 4.7 Seismic actions 4.7.1 The Importance Class of the project shall be ( insert class ) Table 4.3 of EN 1998-1. Ordinary buildings (other than schools, fire stations, power plants, hospitals, etc.) correspond to Importance Class II; 4.7.2 The Ground Type shall be as specified on the relevant documents. Table 3.1 of EN 1998-1. Depending on the particular conditions of the project, contract documents should specify whether ground investigations and/or geological studies should be performed to identify the ground type; 4.7.3 The seismic zone of the project shall be ( insert zone ) According to the seismic zone map, decided by the National Authority, and found in the National Annex of EN 1998-1 4.7.4 Earthquake resistant steel building shall be designed according to ... concept ( insert concept ) DCL, DCM or DCH. 5. DESIGN OF STEEL STRUCTURES 5.1 General rules 5.1.1 To ensure durability, the building and its components shall either be designed for environmental actions (and fatigue if relevant) or else protected from them. § 2.1.3.3(1)B of EN 1993-1-1. 5.1.2 The effects of deterioration of material and corrosion (and fatigue where relevant) shall be taken into account by appropriate choice of material (see EN 1993-1-4 and EN 1993-1-10), and details (see EN 1993-1-9), or by structural redundancy and by the choice of an appropriate protection system. § 2.1.3.3(2)B of EN 1993-1-1. 5.1.3 For the following components, the possibility of their safe replacement shall be verified as a transient design situation (insert list of the components of the building that need to be replaceable) § 2.1.3.3(3)B of EN 1993-1-1. 5.1.4 With reference to Annex A1.4 of EN 1990, vertical deflections (according to Figure A1.1), horizontal deflections (according to Figure A1.2) and vibrations of structures on which the public can walk shall comply with the following limits: (insert serviceability limits states) § 7 of EN 1993-1-1. 5.2 Design of joints 5.2.1 Bolted connections Category shall be as specified on the relevant documents. § 3.4.1 of EN 1993-1-8. 5.2.2 Friction surfaces for slip-resistant connections using pre-loaded 8.8 or 10.9 bolts shall be as specified on the relevant documents. § 3.9 of EN 1993-1-8. 5.2.3 According to EN ISO 25817, the quality level of welds shall be as specified on the relevant documents. § 4.1 of EN 1993-1-8.