Steel Buildings in Europe

Part 7: Model Construction Specification 7 - 18 Guidance on the avoidance of lamellar tearing during welding is given in EN 1011-2. National choice is allowed through clauses listed in the Foreword to EN 1993-1-10 5.4 Composite steel and concrete structures – EN 1994-1-1 EN 1994-1-1 describes the Principles and requirements for safety, serviceability and durability of composite steel and concrete structures, together with specific provisions for multi-storey buildings. National choice is allowed through clauses listed in the Foreword to EN 1994-1-1. Additional contract document requirements According to § 4.2 of EN 1994-1-1, the exposed surfaces of profiled steel sheeting for composite slabs in multi-storey buildings shall be adequately protected to resist the particular atmospheric conditions. A zinc coating of total mass 275 g/m² (both sides) is sufficient for internal floors in a non-aggressive environment, unless otherwise specified in the contract documents, depending on service conditions. According to § 7.3.1(8) of EN 1994-1-1:2004, the effect of curvature due to shrinkage of normal weight concrete need not be included when the ratio of span to overall depth of the beam is not greater than 20, unless specifically required by the contract documents.