A.20% B.25% C.30% D.35%
A.1946kN B.1956kN C.1966kN D.1976kN
A.5cm B.8cm C.10cm D.15cm
A.2026kN B.2068kN C.3011kN D.3393kN
A.0.14 B.0.24 C.0.34 D.0.50