Concrete slab design to EC2 The topics in this section describe how the software applies BS EN 1992-1-1:2004 (Ref. 1) to the design of reinforced concrete slabs. Click the links below to find out more: Limitations (beam and slab: EC2) Design parameters for longitudinal bars (EC2) Design for bending for rectangular sections (beams and slabs: EC2) Deflection check (beam and slab: EC2) Punching shear checks to EC2