1.For tension failure fs = fy, c / d <= 700 / (700 + fy) 2.Min. reinforcement As,min = 0.2.bt.h.f'c0.5/ fy= 3. The efficiency of the bond increases as the cover increases a). beam: 40 mm( to stirrups) for exposed to earth or weather b). beam: 30 mm (to stirrups) for not exposed to earth or weather c). slab: 20mm 4. Slab bar spacing: s <= 500 mm, s <= 3t