Skiff Deck Design Fire Boat
Challenge: Provide structural support to carry new skiff to the extant fire boat structure while minimizing interference with the main deck. Resolution: Our engineering team designed a system that supported the introduction of a skiff to a support structure without...
Sheet Pile Support System Inspection and Remediation
Challenge: Remediate the heavily damaged walers (sheet pile support beams) in order to prevent failure of the sheet pile system. Resolution: Our visual inspection of the sheet pile support system found localized severe damage at various areas along the walers. At a...
Marine Oil Terminal Value Engineering Study
Challenge: An evaluation of MOT structures and equipment for slope instability was performed by others. Their assessment of existing conditions along with recommended improvements was excessive. HEA was asked to perform more rigorous analyses of the soil-structure...
Graving Dock Hydraulics
Challenge: In order to reduce the likelihood of heavy metal discharges into the bay, this facility shutoff their graving docks dewatering system. As a result, both the walls and the slab had to be re-evaluated for external water pressure due to groundwater, thereby...
Ship Jack Column and Stand Design
Challenge: A specialized set of jack columns are required to support a ship during construction in a dry dock. The custom jack design must give allow for the non-uniform underside of the vessel, the heavy weight of the ship blocks, height adjustability, as well as...
Intake Screen
Challenge: Seaweed and floating debris regularly bypass the existing filtering screens and clog the intake pumps, which are the primary source of the water supply, at a large refinery. New screens must be designed to filter with higher efficiency and also to allow...
Shipyard Brow Design
Challenge: A brow is required in a shipyard facility to provide access to a ship's upper deck levels during construction. The brow must be capable of accommodating ship movement in all six degrees of freedom: translation in all three axes (heave, sway, and surge) and...
Wharf Fender Pile Requalification
Challenge: The suitability of the existing timber fender piles at an operating marine oil terminal was brought into question by state regulators. As an interim measure the facility operator implemented measures to limit the approaching vessel velocity and draft. Our...
Ship Support Structure and Foundation
Challenge: A new class of ship being constructed requires analysis of the support structure and the underlying foundation of the dock during construction. The foundation was not originally designed for the weight and load distribution of this new ship. A design was...
Dump Stand Mechanization
Challenge: A "Dump Stand" for a recycling line at a ship yard was damaged several times in the past. The damage is attributed to the tipping of the dump stand using a fork-lift. Use of a forklift for this purpose is also regarded as dangerous....