ideYAPI BIM Knowledgebase Structural Engineering Concrete Design Current: Concrete Slab Design. Concrete Slab Design. International Design CodesACI 318-19 : Concrete Slab Design TSC 2018 : Slab Design One-Way Slab Design. Two-Way Slab Design. Nonprestressed two-way joist systems (Waffle Slabs). Punching Shear Design. Diaphragm Design of the Seismic-Force-Resisting System. ×