H B C t 80 40 20 2.5 3.925 80 40 20 3 4.71 100 50 20 2.5 4.11 100 50 20 3 5.652 120 50 20 2.5 5.103 120 50 20 3 6.123 120 60 20 2.5 5.495 120 60 20 3 6.594 120 70 20 2.5 5.888 120 70 20 3 7.065 140 50 20 2.5 5.495 140 50 20 3 6.594 160 50 20 2.5 5.888 160 50 20 3 7.065 160 60 20 2.5 6.28 160 60 20 3 7.536 160 70 20 2.5 6.673 160 70 20 3 8.007 180 50 20 2.5 6.28 180 50 20 3 7.536 180 60 20 2.5 6.67