The 1st crane barge is anchored near the beach along the Merrimack River between the Salisbury jetty and the concrete seawall. This crane is being used to load stone from the beach area onto a stone transport barge. One of the excavators moves the stone blocks from the staging area down to the beach. The crane grabs the block with a grapple and slowly swings it over to the transport barge. The stones are placed carefully in the transport and the load needs to be spread out and balanced to keep the barge level. The following series of photos illustrates the process. The next blog post will have a video of the operation.
Excavator grabs a stone block with its claw.
It drops it along the waters edge.
The crane operate positions the grapple (opened up wide) over the block.
The grapple hooks are pulled tight and the stone is lifted into the air.
Close-up the grapple.
The stone is slowly and carefully swung over the crane barge to the transport barge on the right side.
The stone is lowered into the transport barge and the grapple is disengaged.
The grapple swings back to get the next stone.
Next stone ...
No comments:
Post a Comment