Forensic Engineers and Consultants

Tag Archive: liability claim

  1. Experience the Ride, Ride for Experience

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    A lot of people own motorcycle(s). Not a lot of people have experience riding motorcycles. More people have motorcycles stored in their garages, covered with all kinds of things, than ride motorcycles. In a similar neglect, there are those people who take their motorcycle out occasionally but never really put the miles or hours on the bike. This means that most of the people that have registered motorcycles do not get a lot of “seat time”. This issue leads to collisions involving motorcycles that should not have happened for more than one reason. When it comes to collision reconstruction and investigations, “ride to live” takes on a whole different meaning. (more…)

  2. Improper Hearth Extension Leads to Structure Fire

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    The fire service affords you the opportunity to witness and observe things that a lot of engineers and even most people do not get the chance to see.  An example of this is the situation where extended elevated temperatures combined with poor construction techniques to result in a structure fire.

    I have personally observed several occasions where a structure fire was initiated due to improper construction of the fireplace hearth extension.  The most recent one followed a multi-day cold snap, at least by South Carolina standards.  The thermometer read 17 degrees F as I drove to the call of smoke in a residence (more…)

  3. Roadway Defect Scavenger Hunt for Collision Evidence

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    Not too long back, I was on the scene of a collision case where a roadway defect was blamed for the loss of control that led to a single vehicle collision which resulted in major damages and serious injury.  The collision was several years old, and the roadway had not changed over the time passed.  My assignment was to inspect the roadway in the area of the crash, document it (by photographs and 3D scanning), and identify if there was a roadway issue that potentially led to the loss of control.  What happened next was the result of going to the collision location and looking for more than what was to be expected.  These things can help the case tremendously and make a huge difference in resolution. (more…)

  4. Heat Exchanger Failures Will Shut Your Process Down

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    Heat exchangers, as the name implies, are used to bring a process stream to a desired temperature.  They can heat or cool either gases or liquids. They are fairly intricate in their construction, therefore not the cheapest piece of equipment to purchase.  For that reason, facilities don’t keep “spare” exchangers lying around, so when they fail catastrophically, the entire manufacturing process goes down with them… and stays down until they are fixed or replaced. Ow!

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  5. Proper Construction and Maintenance Can Prevent Deadly Chimney Fires

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    There are few things as comforting to me during the winter months as a warm fire burning in the fireplace.  And in this case, I am talking the real deal, the kind that warms you multiple times; from cutting, splitting and stacking the firewood until finally lighting a fire in the fireplace.  However, just like your parents taught you, fire can be dangerous.  And having an actual fire in your home fireplace comes with some required maintenance to ensure you can safely control the fire and keep it where it belongs. (more…)

  6. Major Causes of Wood Truss Failures

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    Wood truss failures can vary and identifying the cause requires visual inspection as well as a working knowledge of the structural loads and building codes. These truss systems must transfer the gravity and lateral loads to the foundations. Consequently, the framing system and the foundation provide strength and stability for a structure. The most common type of wood-framed construction uses roof trusses, exterior and interior load-bearing walls, beams, girders, posts, and floor framing to resist the gravity and vertical loads. This type of wood-framed construction engages a system of horizontal diaphragms (roof and floors) and shear walls (vertical exterior sheathed walls) to resist the lateral loads. (more…)

  7. Stress Corrosion Cracking of Stainless Steel in Marine Environments

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    Stress corrosion cracking involves the slow growth of small, often microscopic, cracks through a metal part in a corrosive environment.  The cracking can continue to the point that the part fails suddenly and unexpectedly even though it still appears new and in good condition.

    My first experience with stress corrosion cracking happened in the Charleston harbor when the stainless steel rudder suddenly separated from a sailboat during moderate winds. What had been a pleasant evening sail turned instantly into being in a difficult to control boat in the middle of the busy shipping channel. The rudder remained attached only (more…)

  8. Heating System Losses, Part One

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    When fall and winter arrive and temperatures drop, it is a great comfort to have a heating system to warm your home or office. Several categories of heating equipment exist to provide both primary and secondary heating. Primary heating systems include fuel gas/fuel oil/electric forced air furnaces, heat pumps, hydronic heating/steam systems and even wood-fired heating systems.  Secondary heating equipment includes electric, gas and kerosene space heaters of both fixed and portable design, and fireplaces. Each of the different types of heating systems have unique hazards that, uncontrolled, can result in fires, explosions, burn injuries, and carbon monoxide poisoning.  (more…)

  9. P&ID’s, If You Please – Piping and Instrumentation Diagrams Explained

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    When investigating an industrial incident, one piece of information I always ask for is the relevant P&ID’s for the process.  P&ID stands for Piping and Instrumentation Diagram and is defined as “A schematic diagram of the relationship between instruments, controllers, piping, and system equipment.” A set of P&ID’s for an entire facility allows you to trace the entire manufacturing process from raw material unloading to finished product loadout, including utilities like steam, water, fuel, and air. That’s great information to have, but isn’t especially useful (more…)

  10. The Role of Interlocking Guards in Injury Prevention

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    In the three-part series on the CE mark, we scratched the surface of some of the requirements an equipment manufacturer must meet in order to earn this designation. Part three of the series dealt with some of the requirements for the design of a guard.  One of the items for consideration with the design of a guard is the frequency that someone will need to access the area protected by the guard.  If access is needed on a routine basis, often defined as more than once per shift, the guard needs to be designed to be movable instead of fixed.  Movable is defined as able to be opened without the use of tools.  Otherwise the frustration and time requirements of obtaining tools and removing a fixed guard will often lead to the guard being discarded. (more…)

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