Forensic Engineers and Consultants

Blog Posts by: Jeff Warren

Author Jeff Warren

Jeff_Warren_WEB

Expertise Includes:

  • Machine Design & Safeguarding
  • Machinery & Equipment Analysis
  • Products Liability
  • Risk Assessment
Figure 1: A view of a playground with impact absorbing surfacing. The brightly colored surfacing beneath the play equipment is a poured-in-place rubber and polyurethane material.

Children Will Fall At Playgrounds. What Shall We Do To Protect Them? A Multipart Blog Series – Part III: An Overview of Selected Playground Safety Technologies

Co-Authored with Aron Olson, PE

Welcome to the third and final post in our multipart series of blog posts about a young boy’s fall and serious injury at a public playground. In our first post we gave a brief overview of the incident and our investigation. In the second post we discussed some of the safety standards applicable to public playgrounds. In this post, we will examine some of the impact-absorbing playground surfaces available to protect children at playgrounds from injury. If you would like to read the first two posts, they are available here and here.
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Figure 1: A view from a vendor's website of a material known as engineered wood fiber that is designed for use as a playground surface.

Children Will Fall At Playgrounds. What Shall We Do To Protect Them? A Multipart Blog Series – Part II: A Brief Summary of Playground Safety Standards

Co-Authored with Aron Olson, PE   

Welcome to the second part in our multipart blog series examining a young boy’s fall and injury at a public playground. If you missed the first part in this series, click www.warrenforensics.com/2017/10/11/children-will-fall-at-playgrounds-what-shall-we-do-to-protect-them-a-multipart-blog-series-part-i/ to read it. In this post, we will highlight some resources that designers of public playgrounds can use to help ensure their designs are reasonably safe. Read More

Dan Olson presenting his Collision Course to a local insurance group.

Warren Announces the Retirement of Dan Olson

With both pleasure and regret, Warren announces the retirement of Dan Olson. Dan has been a consulting engineer at Warren since its founding 20 years ago and has been a leader in the development of Warren and its culture from the onset. Read More

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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

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

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