Hollywood Bowl Canopy
HEA provided the structural design of a unique acoustic canopy suspended from the new Hollywood Bowl shell. Seismic analysis showed that the design could take advantage of reduced loading afforded by the pendulum effect of the suspended canopy, which reduced the...
Master and Commander HSS Rose
This set simulated the appearance and motion under sail of the HMS Rose and was used for filming close-up action on the main deck and gun deck. HEA designed the foundation and structure for one of the largest gimbals ever built, which allowed the set to travel along...
Crane Rail Finite Elememt Analysis
A cantilevered steel rail with a unique support configuration and an atypical cross section required a more detailed analysis regime than provided by the ASME code. HEA developed a detailed, non-linear computer model of the crane rail and subjected it to simulated...
Containment Building Crane Anchorage
HEA performed a 3rd party review of the design calculations for the support of a crane to be installed inside a nuclear power plant containment building. The review indicated that the lower base plate did not distribute the load evenly to the anchor bolts, causing...
Crane Collapse Analysis
A platform crane boom collapsed during a routine lift. HEA attributed the failure to the collapse of the dual mast members, causing the lattice boom to sequentially collapse. HEA performed further inspections, which revealed corrosion related deterioration in a few...
Crane Lift Plan Review
A refinery FCC unit was to be demolished. HEA worked with the contractor to develop a suitable lift plan. This work included designing a suitable mat for crane operation, overturning calculations, lifting lug design and a structural analysis to identify suitable...
Electrostatic Precipitator Lift
It was necessary to lift a new precipitator onto its support structure. The challenges involved included finding the center of gravity of each precipitator module, locating the lug attachment points, creating a lift schedule (which included rotation of certain...
Crane Pedestal Design and Foundation Analysis
HEA performed a feasibility study and concluded the purchase of a new diesel crane was preferable to electrification of the existing crane. HEA developed the crane design specifications. HEA also designed the pedestal base frame and evaluated the existing pier slab...
Self Ratcheting Spreader Beam Design
HEA designed an adjustable spreader to be used with a shipyard's 300-ton cranes. The spreader employs a self-contained ratcheting system, which allows easy adjustments to accommodate different-sized loads. The spreaders are in service, where they have proven their...
Building Fragility and Vehicle Barrier Design
To protect critical nuclear structures and equipment from malevolent vehicle explosions, HEA was asked to evaluate the overpressure capacities of critical structures and equipment. A barrier system capable of stopping an assault vehicle was designed. Minimum standoff...