Steel Buildings in Europe

Part 7: Model Construction Specification 7 - 39 Proposed Clauses Commentary 5.2.4 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. 5.3 Material toughness and through thickness properties 5.3.1 The guidance given in section 2 of EN 1993-1-10:2005 shall be used for the selection of materials for fracture toughness. 5.3.2 The guidance given in section 3 of EN 1993-1-10:2005 shall be used for the selection of materials for through- thickness properties 5.4 Composite steel and concrete structures 5.4.1 The exposed surfaces of the profiled steel sheeting for composite slabs shall be adequately protected to resist the particular atmospheric conditions as specified on the relevant documents. Clause 4.2 of EN 1994-1-1:2004. A zinc coating of total mass 275 g/m² (including both sides) is sufficient for the internal floors in a non-aggressive environment. 5.4.2 The effect of curvature due to shrinkage shall be as specified on the relevant documents Clause 7.3.1(8) of EN 1994-1-1:2004. When the ratio of span to overall depth of the beam is not greater than 20, the effect of curvature due to shrinkage (of normal weight concrete) need not be included. 6. EXECUTION SPECIFICATION 6.1 General 6.1.1 The requirements for the execution of structural steelwork for the project are given in the following documents: (Insert list) Insert a list of the relevant drawings and other documents, including reference to EN 1090-2. 6.2 Execution Class 6.2.1 For building structures, EXC2 shall generally apply, except where specified otherwise on the drawings. The use of EXC2 as the default class will provide adequate reliability for most elements of ordinary buildings. For some structures, a greater scope of inspection and testing and/or higher quality level acceptance criteria may be required, either generally or for particular details. Particular details where this is required, such as where special inspection and testing is required, should be indicated on the drawings. Table A.3 of EN 1090-2 gives a list of requirements related to execution classes; Annex B of EN 1090-2 gives guidance for the choice of execution classes; The choice of execution classes is related to production categories and service categories, with links to consequence classes as defined in Annex B of EN 1990.