by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
Challenge: The steel piles that are driven into the sea floor for the purpose of berthing and mooring ships at a shipbuilding facility in San Diego, have reached the end of their service life. HEA was tasked with helping the client create a pile replacement plan as...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
Challenge: Our firm was tasked to design a 360 degree swivel adapter for use with an existing spreader beam that our firm designed many years ago. The required suspended load was significant: 180 tons. The adapter also had to be capable of swiveling 360 degrees and...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
An AOE-10 rejection notice was written on shipboard bleed air and auxiliary steam piping systems because pipe supports did not comply with established Navy shock mounting requirements. HEA performed detailed dynamic shock analyses (DDAM) for both piping systems. These...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
The admissible air draft for a ship passing beneath the bridges of the Carquinez Strait was not known. HEA established minimum air draft requirements for passing in and out of the Carquinez Strait during any one week. This information enabled the shipbuilder to add...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
It was thought that waves generated by launching large vessels damaged a pier. HEA performed a detailed failure evaluation of the pier and demonstrated the damage was not attributable to launches. The damage was found to be caused by dry dock mooring loads during...
by GeorgeWebManHopperE | Mar 28, 2021 | Shipbuilding and Marine
It was desired to extend the length of a carriage way to accommodate hauling larger barges. HEA designed an extension of the existing rail system, which integrated fully with the existing rail. HEA also designed an upgraded winch and pulley system to accommodate the...
