Forensic Engineers and Consultants

Tag Archive: expert

  1. Preventing Slip-and-Fall Incidents Through Proper Entrance Matting

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    This article is based on my experience investigating and analyzing slip-and-fall incidents involving pedestrian walking surfaces. One type of slip and fall incident involves slipping on wet floor surfaces shortly after entering a building or stepping onto hard-surface flooring.

    Common flooring materials involved include polished concrete, vinyl composite tile, porcelain tile, and wood flooring. These surfaces are generally safe when dry but present increased slip risk when contaminated. Matting is often used as a method to minimize the slip risk but is frequently ineffective because of improper usage. (more…)

  2. Hot Dog: When The Backyard Grill Attacks!

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    Grilling outdoor during warmer months is a great way to bring people together, so long as users remember they are literally playing with fire.

    Spring weather is wonderful in the south. It’s been a year since I moved and got rid of most of the things we never used in the garage. Now I’m perseverating over which grill to buy so my fiancé and I can finally make grilled turkey legs and stir-fry vegetables while watching the neighbor kids play tag between houses. Despite my pale bald head that sunburns almost instantly, I feel the need for some fresh evening air. Very little makes the afternoon better than sitting in a metal chair and joking about the neighbor’s gazebo plans while you casually take food off the grill.

    I have to be honest – I sort of fear the back yard. There are gnats, neighbors with all manner of projectiles (frisbees, basketballs, volleyballs and even footballs have flown past me when all the neighborhood kids are running around!), and all the dust that my edger kicks up. But the social energy of such an active development is why I moved there. It seems a waste to eat dinner on nights like these. After all, a backyard barbecue is the highlight of summer.

    But managing fire is one of the most dangerous things you can do in flip-flops. (more…)

  3. Cross Cut Grooving in Walking Surfaces

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    As an experienced safety consultant, I am often called upon to investigate a wide range of premises liability incidents. One common type of incident that frequently results in serious injury is a fall on a painted walking surface.

    The ASTM International Standard Practice for Safe Walking Surfaces, ASTM F1637, is a nationally recognized consensus standard that has existed for more than 30 years. It provides guidance to property owners and designers in the construction and maintenance of safe walking surfaces. The standard specifically addresses painted walking surfaces in Section 5.1.3.

    ASTM F1637-21 states:

    5.1.3 Walkway surfaces shall be slip resistant under expected environmental conditions and use. Painted walkways shall contain an abrasive additive, cross-cut grooving, texturing, or other appropriate means to render the surface slip resistant where wet conditions may be foreseeable.

    In previous articles, I have discussed (more…)

  4. You’re Just Not My Type – Part 1: Guards

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    Selecting the best or most effective way to reduce or eliminate risk from a particular machine hazard is an extremely important process.  It can mean the difference between someone going home and hugging their wife and children…to never going home again.  The hazard control hierarchy (see figure below) is an available tool that illustrates what is known to be most effective to least effective when it comes to eliminating machine hazards or reducing the risk from those hazards to an acceptable level.  Removing the hazard by designing it out is by far most effective.  (more…)

  5. CHECK OUT THAT RACK! – The Importance of Inspecting Storage Racks for Proper Installation

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    People have too much “stuff”. Manufacturers, retailers, wholesalers, and commercial enterprises all carry inventory of “stuff”, too. According to the Energy Information Administration’s (EIA’s) own statistics, in 2018, the US had over 17.4 billion ft2 of warehouse and storage. Growing from just 13 billion ft2 in 2012, warehouse and storage space is the fastest growing and now the largest use of commercial space in the US, overtaking office space for the first time in modern history.

     

    Almost every one of those buildings contains storage racks. And this doesn’t include the mercantile spaces. You can go to a big box retailer and buy cereal from a lower shelf while pallets of grain or packaged drinks sit 20-30 feet above, waiting to be introduced to the customer.

    There is no specific OSHA regulation for anchoring storage racks – (more…)

  6. Stop or I’ll Soot!!!

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    Fire. Something about fire touches our brainstems…both good and bad!  Uncontrolled fire is terrifying and deadly to be sure.  But the controlled burning of wood at a campfire or in a fireplace in your home almost can’t be beat, to my mind! For that very reason, a fairly common amenity to houses nowadays is the gas log fireplace insert.

    When not installed properly, these logs will generate soot. These soot particles can leave the fireplace and meander.  All. Over. Your. House.  (more…)

  7. KEEP the CHANGE?

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    As we all know, change is a part of life.  Sometimes the results from change are good.  And we know sometimes change may result in things becoming worse, although it may not be immediately evident.  I think it is safe to say that when we intentionally make changes to something, our goal is to make it better with respect to one or more metrics.  Engineers working in manufacturing facilities are often asked to make changes to existing machines and processes for multiple reasons: (more…)

  8. Structure Fires in Eating and Drinking Establishments

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    Eating and drinking establishments see an average of 7,410 structure fires per year based on a 2017 report published by the National Fire Protection Association (NFPA). The report analyzed available data from the U.S. Fire Administration’s National Fire Incident Reporting System (NFIRS) and the NFPA’s annual fire department survey for the years 2010-2014.

    (more…)

  9. Spontaneous Combustion…Is it hot in here or is it just me???

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    In the old-timey Fire Triangle, you have heat, fuel, and oxygen.  Get these three together in the right quantities, and you get fire.  What if the fuel provides its own heat?  That’s spontaneous combustion, or spontaneous ignition.  NFPA921 defines this as “initiation of combustion of a material by an internal chemical or biological reaction that has produced sufficient heat to ignite the material.” (more…)

  10. Hidden Heat: The Unseen Hazard of a High Resistance Connection

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    A typical residence can have upwards of 10,000 feet of electrical conductors installed, most of which are buried in the walls, attics and crawlspaces.  A commercial building can have 100,000 to upwards of 1 million feet of electrical conductors.  At each device such as a switch or a receptacle are at least three, and typically six or more connections of these conductors within a junction box.  The connections can be in the form of twisted connectors, screw terminals, push in terminals and crimped connectors.

    (more…)

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