Class Axle load
Normal period Period of thaw
or rain
B.1 9,000 kg 9,000 kg
B.2 16,000 kg 16,000 kg
B.3 15,000 kg 15,000 kg
B.10 10,000 kg 8,000 kg
B.20 10,000 kg 8,000 kg
B.21 18,000 kg 15,500 kg
B.25 13,500 kg 11,000 kg
B.25.1 18,000 kg 15,500 kg
B.26 10,000 kg 8,000 kg
B.30 18,000 kg 15,500 kg
B.31 21,000 kg 18,000 kg
B.32 24,000 kg 21,000 kg
B.33 26,000 kg 22,000 kg
B.40.1 18,000 kg 15,500 kg
B.40.2 23,000 kg 20,000 kg
B.41 26,000 kg 22,000 kg
B.42 26,000 kg 22,000 kg
B.43 28,000 kg 24,000 kg
B.44 32,000 kg 27,500 kg
B.45 34,000 kg 29,500 kg
B.56 17,000 kg 16,000 kg
B.57 23,000 kg 23,000 kg