A.0.70m B.0.77m C.0.80m D.0.85m
A.1380 B.1430 C.14820 D.1530
A.16.5kN/m3 B.17kN/m3 C.17.5kN/m3 D.18kN/m3
A.10% B.14% C.18% D.22%