Forensic Engineers and Consultants

Blog Posts by: Jeff Warren

Author Jeff Warren

Jeff_Warren_WEB

Expertise Includes:

  • Machine Design and Safeguarding
  • Mechanical Engineering
  • Risk Assessment
  • Safety
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Children Will Fall At Playgrounds. What Shall We Do To Protect Them? A Multipart Blog Series – Part I

Co-Authored with Aron Olson, PE   

In 2011, a 5-year old boy was severely injured at a public playground when he fell through a second floor opening around a fireman’s pole in a playhouse. He fell more than seven feet and struck a bare concrete floor. We are thankful that he eventually recovered from his injuries. The person who designed and built the playground was accused of negligence. A lawsuit ensued, and eventually settled in favor of the boy. Read More

Dave-blog

Warren Welcomes Dave Looney, Senior Construction Consultant

Warren is pleased to announce the addition of W. Dave Looney, as a Senior Construction Consultant. Dave has more than 40 years of experience in building construction and construction project management.  He has managed projects ranging from wood-framed condominiums to state of the art manufacturing facilities. Read More

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Welcome Baby Barton!

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Congratulations to Laura and James Barton on the arrival of their baby girl born August 7, 2017, at 12:55 pm, 7 lbs., 15 oz., 19.5 in. Read More

Jennifer Morningstar, P.E.

Congratulations to Jennifer Morningstar on receiving Professional Engineer’s License

Warren is thrilled to announce that Jennifer Morningstar passed the Principles and Practice of Chemical Engineering exam and received her South Carolina Professional Engineer’s License on July 17, 2017. She has been with Warren since September 2011, in a non-engineering capacity but has rejoined the ranks of engineers as a consultant. Read More

Jennifer Morningstar

Warren Welcomes New Chemical Engineer

Warren is pleased to announce that Chemical Engineer, Jennifer Morningstar, E.I.T., has joined our team of engineering professionals as a Consulting Engineer. Read More

Tom Kelly, P.E., Electrical Engineer.

Electrical Engineer Joins Warren

Warren is pleased to announce the addition of Tom Kelly, MSEE, PE, CFEI, as Senior Consulting Engineer specializing in electrical equipment failures, electrocution and electric shock accidents, fires and explosions, industrial electrical accidents, lightning strike analysis, and scope of damage/estimate of repair. Tom also has experience in robotics and automation systems and high energy laser design. Read More

Figure 2: A view of some of the undersize anchors used to secure the capstan winch. The anchors at the upper right failed by pulling out of the concrete slab. The one at the lower left failed by bending and pulling out.

Injury Involving a Capstan Winch

Co-Authored with Jeff Warren, PE   

A capstan winch uses a mechanically powered rotating cylinder, called a capstan, to apply pulling force through a rope. When the rope is looped around the rotating capstan and tightened, friction between the rope and capstan allows the winch to apply force to pull a load. A typical capstan winch is shown in Figure 1 below. Read More

Warren Forensics Team members and their guests celebrating Warren's 20th Anniversary, in Charleston, SC, January 27, 2017.

Warren Forensics Celebrates 20 Year Anniversary

It makes me proud as the founder of Warren Forensics to announce that we have crossed another milestone in the history of our company. On February 1, 2017, we will have been in business for twenty years. I am particularly proud of our team of professional engineers and consultants who have worked on your forensic engineering cases and communicated, with authority, fact-based opinions you could trust. Read More

Figure 2.  A view looking into the mixer. The grate and ribbon are visible. The grate openings are large enough to admit a worker's leg.

Case Study of an Injury Involving a Soil Mixer

Co-Authored with Aron Olson, P.E.

In May, 2014, a plant farm worker was seriously injured when he fell into the hopper of an electrically powered soil mixer.  The mixer in question used a rotating steel ribbon powered by a 7-1/2 hp electric motor to mix batches of materials such as sand, mulch, wood shavings, fertilizers and other landscaping materials to create potting soil. At the top of the hopper sidewalls, within 6 inches of the ribbon, was a steel grate. Read More

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