HLA is one of the most sought after engineering firms in the industry when it comes to forensic analysis and design of industrial structures. Most notably, HLA was called in to examine and analyze the collapse of the Hoover Dam Bypass Bridge construction collapse. Assignments like these, small or large, are welcomed with equal enthusiasm.
Cranes and Craneways — Tower, gantry, top running and underhung cranes; analysis and modifications of all types of materials handling equipment.
Heavy Industrial Equipment — Press frames; compressor and generator skid mounted units; jigs & fixtures; foundation design.
Mining Equipment — ROPS/FOPS guards, dump bodies, fatigue and fracture evaluations.
Industrial Buildings — Design and analysis; building evaluations and modifications; craneways and craneway modifications; foundations. All materials – steel, concrete and wood.
Failure Analysis — Civil, process and industrial structures; computer simulation; impact simulation.
Selective Catalytic Reduction Systems (SCR)
Selective Catalytic Reduction Systems (SCR)
HLA provides a full range of engineering services for SCR such as:
Detailed duct design from turbine exhaust to stack outlet foundation design interface coordination and design
All building codes for seismic and wind
UBC, CBC, BOCA, SBC, ASCE, AISC, etc
HLA Engineers, Inc., is considered one of the foremost authorities on railcar design and analysis in the world. As such, HLA maintains a unique “feel” for car structure, and an in-depth understanding of the industry as a whole. HLA’s team of engineers are acquainted with key personnel at both AAR and DOT, and are familiar with the governing codes throughout the United States as well as many other countries
HLA performed the first finite element analysis of a railcar in 1972 when they analyzed and assisted in the redesign of the 5800 cu.ft. plastic pellet car. HLA Engineers has designed or participated in the design and analysis of literally every type of railcar manufactured today, including:
HLA Engineers has designed or participated in the design and analysis of literally every type of railcar manufactured today, including:
High side gondola
Maintenance of Way Cars
Box car
Flat cars, bulkhead flat
Pulp wood
Plastic pellet
Pressure differential
Tank and cryogenic tank car
Inter-modal articulated well, stand-alone well, and spine cars
Open top and covered hopper cars (both stub and thru sill)
HLA Engineers has performed dry cargo container design and analysis, tank container design and stress analysis (minimum weight design and testing). ISO tank containers (UN Portable Tank, DOT Spec 51, IM01, IM02 and IM05) for liquefied gases, industrial chemicals and food products. We have also designed and drafted ISO refrigerated and non-refrigerated freight containers to DOD standards.
HLA has extensive experience with verified compliance and international shipping codes (IMDG, RID, ADR, etc.) and has performed liaison work with certification agencies (American Bureau of Shipping and Lloyd’s of London and Bureau Veritas).
HLA manages physical testing of containers to ISO standards and has been engaged by the international trade organization, IICL, to determine the effects of damage on ISO shipping containers including combined finite element analysis and a test laboratory analysis to establish damage criteria.
Our Experience includes:
Containers — Designed, analyzed and tested ISO tank containers and dry cargo containers, 20 and 40 foot.
Chassis — Designed truck trailer chassis for containers: 20, 40 and 45 foot.
Chlorine Ton Containers — Designed / drafted chlorine ton containers per DOT 106A and 110A specs. Also designed stacking frame for shipping / storage.
HLA Engineers has extensive petrochemical engineering experience and has solicited turnkey projects in design, analysis and testing, as well as troubleshooting and special problem solving. Teaming with local consultants for process, electrical and controls, HLA can provide complete engineering of new, remodeled or retrofitted oil and chemical production, refinery and on offshore projects.
HLA provides the following:
Pressure Vessels
Horizontal, vertical and spherical, including skirts, columns and/or saddles
ASME Code Section VIII Division 1 and Division 2 rules
Fabrication drawings and calculations for all types of Division 1 pressure vessels and storage tank facilities: carbon and stainless steel, exotic materials (Hastelloy, Monel, composites); cladding; autofrettage
Engineered, analyzed and drafted fabrication drawings for many high pressure cryogenic vessels: to 10,000 psi and –423F, per Division 2 in Seismic Zone 4 and rail transportation
Computer analysis and simulation of quick opening closures (to 36″ diameter)
Computer analysis of piping pressure sensors and flow meters
Piping
Design and analysis: B31.1 and 31.4. pipe racks, valve design and analysis, special fitting analysis, thermal, seismic, water hammer, flexibility/stress analysis, hangers and supports: vibrations/seismic, thermal loads.
Spherical laminated piping flex joints, computer analysis of piping pressure sensors and flow meters.
Storage Tanks
API 650 and API 620, structurally supported and self supporting roofs
Off-shore Oil Platform Mooring Systems
Drilling Rigs
Sequence Effects, Truncation, Clipping, Retardation
Marine Risers
Modal, Harmonic PSD random and Seismic vibration
Compressors
S-N Curves, Endurance Limit and Fatigue Strength Surface & Size effects
Drilling Components
Data, Load Streamlines Analogy
Failure Analysis
HLA Engineers can perform design and analysis of structures of polymer matrix composites with both thermoset and thermoplastic resin systems and other matrix materials and smart structures. Our experience includes:
Determination of elastic moduli
Determination of strength in brittle matrices
Compression behavior
Effect of orientation on elastic properties
Simple laminates and the approximation of the properties of woven and random fiber composites
Sandwich core composite structures well, and spine cars
Stress Analysis
Extensive FEA Experience with ANSYS and LS-DYNA
2D/3D and Quasi-3D FEA in stress analysis
Material and geometric nonlinear analyses
HyperElastics and HyperElastic composites
Failure criteria and failure modes
Laminate strength and strength theories
Residual stresses, stress concentrations, and interlaminar stresses
Laminate progressive failure
Failure theories including max stress, max strain, and quad
Failure criteria such as Tsai-Wu, Hoffman, and Hill
Composite delamination, edge delamination effects, design and analysis
Fatigue and linear elastic fracture mechanics, toughness in composites
Thermal and hygrothermal analysis, TMA, TGA and DSC of polymeric materials
Optimization of material propertieas of composites and sensitivity analysis
Experimental characterization of composites and physical testing
For over 40 years HLA has strived to be the industry leader providing complete design and stress analysis for all types of trailers including, but not limited to: DOT MC 331, 338, 406, 407, 412 cargo trailers and LPG, NH3, CO2, chlorine and cryogenic transports.
HLA performed the first finite element analysis of a railcar in 1972 when they analyzed and assisted in the redesign of the 5800 cu.ft. plastic pellet car. HLA Engineers has designed or participated in the design and analysis of literally every type of railcar manufactured today, including:
HLA has also performed design and analysis of ASME pressure vessels (Section VIII, Divisions 1 and 2), cryogenic pressure vessels, ISO intermodal tank and dry cargo containers, MC 331 transports and many other types of transportation equipment.
Containers — Designed, analyzed and tested ISO tank containers and dry cargo containers, 20 and 40 foot.
Chassis — Designed truck trailer chassis for containers: 20, 40 and 45 foot.
Chlorine Ton Containers — Designed and drafted chlorine ton containers per DOT 106A and 110A specs. Also designed stacking frame for shipping / storage.
Cargo Transport Trailers — Design and analysis; building evaluations and modifications; craneways and craneway modifications; foundations. All materials – steel, concrete and wood.
Failure Analysis — HLA provides complete design and stress analysis for DOT MC331, 338, 406, 407, 412 LPG, anhydrous ammonia, carbon dioxide and chlorine transport trailers: semi and bobtail and cryogenic transports. We have analyzed and verified design load
HLA has a long history of performing the necessary design and engineering and forensic engineering of Finite Element Programs, 2D, 3D, Psuedo-3D, Hyper-realistic and special purpose engineering. Our engineering experts can help you with design programs for:
Aircraft
Railcar analysis
Engineering mechanics
Mechanical
Structural
Civil
FRP and elastomers
Fatigue
Fracture mechanics
Existing program modifications / improvement
Graphical user interfaces
Program adaptions
Machines
