crane: http://tinypic.com/view.php?pic=2ywiidh&s=7 Lifting: http://tinypic.com/view.php?pic=309ok06&s=7 Determine the length of each chain sling that will hold the transformer, if the safe working load in each sling is not to exceed 150 kN. (H3.1) Calculate the maximum stretch in the lifting cable when the transformer is just being lifted off the barge 40 m below the bridge deck (i.e. static load) and the boom is at 60°, using a Ø15 mm steel cable (if young’s Modulus for steel is 210 Gpa’s). Calculate the maximum acceleration of the lifting operation, if the maximum breaking stress in the cable was not to exceed 1.867 Gpa’s [Remember F = m (g + a)] Calculate the pressure in the two hydraulic ram pistons, when the boom is stationary at 45°. The pistons are mounted 3m forward of the boom and 2.12 m up the boom and they have a diameter of Ø100 mm.