Type Reinforcing-bar Concrete grade Section height Section width Base area (cm2) Weight (kg) Length (cm) Sub-rail Middle Ending Sub-rail Middle I 36 dia.3 C48 20.2 16.5 29.45 27.5 25 6588 251 250 II 44 dia.3,4 dia.10 C58 20.2 16.5 29.45 27.5 25 6588 251 250 III 10 dia.7, 8 dia7 C60 23.0 18.5 30.0 28.0 7720 320 260