L1 a b hf1 b1 L2 4 2.423 L40X4 200 4 60 130 5 2.977 L40X5 230 4 60 130 4 2.737 L45X4 220 4 65 140 5 3.369 L45X5 220 5 65 140 6 3.985 L45X6 220 6 65 140 4 3.059 L50X4 240 4 70 140 5 3.77 L50X5 230 5 70 150 6 4.465 L50X6 240 6 70 150 4 3.446 L56X4 260 4 80 160 5 4.251 L56X5 260 5 80 160 8 6.568 L56X8 330 6 80 160 4 3.907 L63X4 290 4 85 170 5 4.882 L63X5 290 5 85 170 6 5.721 L63X6 290 6 85 170 8 7.46