Structural steel design - Literature review Example When restoration was completed, the new skeleton had to be hoisted on to supports. These were composed of steel compression struts that are hollow, with a capacity of 50 tons. They were coupled to node points found at the end of each of the cradle frames where they stuck out through the hull. The external support’s lower ends were linked to plates cast into the dry dock’s steps. Since the steps had started crumbling, they had to be dug out and reinforced with grouted steel piles before connecting supports and lifting the ship. A series of arms offered lateral wind load restraint. The arms were bolted to strengthened concrete tension piles at the top of the dry dock (Douglas 2012, pg. 69). The connection nodes are also required as secondary support to the glass canopy. The members’ structural steel grades are of S355 J2 to BS EN 10025. Lifting the ship was done at intermediate phases using 24 200Te SWL cylinder jacks, each under every node point.
