Steel Buildings in Europe

Part 10: Model Construction Specification 10 - 42 Proposed Clauses Commentary 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 Rules for sheeting 5.2.1 The Structural Class of the construction (Class I to III), associated with failure consequences according to Annex B of EN 1990, shall be as specified on the relevant documents. § 2(6) of EN 1993-1-3 Structural Class I: construction where sheeting is designed to contribute to the overall strength and stability of a structure; Structural Class II: construction where sheeting is designed to contribute to the strength and stability of individual structural elements; Structural Class III: construction where sheeting is used as an element that only transfers loads to the structure. 5.4 Design of joints 5.4.1 Bolted connections Category shall be as specified on the relevant documents. § 3.4.1 of EN 1993-1-8. 5.4.2 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. 5.4.3 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. 5.4.4 The frequency of inspection of welds shall conform to the requirements of EN 1090-2 and shall be as specified on the relevant documents. § 4.1 of EN 1993-1-8. 5.5 Fatigue 5.5.1 Fatigue assessment shall be undertaken using ‘damage tolerant method’ or ‘safe life method’ (specify assessment method to be used). § 3(1) of EN 1993-1-9 If the ‘damage tolerant method’ is specified, a prescribed inspection and maintenance regime for detecting and correcting fatigue damage should be implemented throughout the design life of the structure. The ‘safe life method’ should be specified in cases where local formation of cracks in one component could rapidly lead to failure of the structural element or structure. 5.5.2 In order to determine the partial factor for fatigue strength, in conjunction with the specified fatigue assessment method, the failure Consequence classification shall be taken as ‘Low Consequence’ or ‘High Consequence’ (specify the consequence class). § 3(7) of EN 1993-1-9 5.6 Material toughness and through- thickness properties 5.6.1 The guidance given in section 2 of EN 1993-1-10 shall be used for the selection of materials for fracture toughness.