Forensic Engineers and Consultants

Archive: Consumer Products

Another Dimension of Engineering, Part 2: Visual Demonstrations Can Clarify the Issue

Co-Authored with John Phillips, PE, CFEI

In our last post on 3D scanning, we introduced Warren’s new Faro Focus X 330 three dimensional scanner.  To recap, the Faro scanner combines three dimensional laser measurement with automated photography to capture 360-degree data from the real world. Potential applications include vehicle accident scenes and damaged vehicles, structural collapses, fire scenes, flood damage scenes, and machinery and equipment analysis, among others. In this post, we will highlight some of the outputs that can be created from the detailed data captured by the scanner. Read More

Author

John_Phillips_WEB
A power buggy fitted with an outrigger for tip-over testing.

Injury on Power Buggy

Author

When an operator is thrown from a ride-on vehicle when it tips over, such as a mud buggy, serious injury or death can result. In one such case I investigated, the issue centered on the maintenance of the vehicle, specifically whether a maladjusted hydrostatic drive caused the braking mechanism to malfunction. Read More

One of the fractured Grade 5 bolts used to secure a concrete truck mixer drum to a drive flange.

Bolted Connection Failures

Author

One of the most common features of machinery, consumer products, and assemblies of any type is the bolted joint. Sometimes the joint fails, with results ranging from inconsequential to catastrophic. The design of a joint is in the purview of an engineer, who must consider the material to be joined, the geometry of the joint, the loads imposed on the joint, the strength of the connectors (i.e., bolts, screws) environmental effects (i.e., temperatures, corrosion) and perhaps other factors. Read More

A view of the primary air inlet on one brand of firelog.

Firelog Maintenance: Tips to Keep Your Home Soot Free

Author

If you have ever experienced it, you know that sooting from a fireplace can cause unsightly damage throughout a home. In some cases, sooting from gas firelogs is caused by improper placement of the logs, such that flame impinges on the artificial log. When heated, the “log” will give off soot, so placement of the logs is important. Some manufacturers provide locating pins for the logs to rest on, so that proper placement is easier to achieve. Read More

Frozen Tankless Water Heater Losses

Author

Recently, we have seen a number of water damage losses stemming from gas-fired and electric tankless water heaters exposed to freezing temperatures. Tankless hot water heaters have been growing in popularity and use due to their energy savings over traditional water heaters. These units are typically installed on the exterior of a home or business in areas of the country where prolonged freezing or extremely low temperatures are not common. Read More

A view of a pipe elbow that cracked after being exposed to sub-freezing conditions.

Freeze Damage to Fire Sprinkler Systems

Author

The ongoing frigid temperatures serve as a reminder of the many investigations by Warren engineers involving fire sprinkler systems that have failed when some part of the system was exposed to the sub-freezing conditions. Interestingly, failures do not necessarily occur within the area of greatest freeze exposure, as the failure mechanism is the extreme pressure that results from the growth of an ice plug inside the exposed pipe in which the high pressure will rupture the weakest component which may even be located in a heated area of the sprinkler system. Read More

The interior of this chase and the surrounding roof framing was badly burned in a fire.  The fire resulted from construction defects in the installation of the chimney system.

Fire Losses Involving Improper Construction and Installation of Fireplaces and Chimneys

Author

On a cold winters night a family is gathered in the living room of their home enjoying the warmth of their fireplace.  After using the fireplace all day, they go off to bed to a nice restful sleep.  However, they are soon rudely waked by the sound of a smoke alarm in the home.  Rushing out into the cold night they can see smoke, but no flame in the home.  Outside, they can see that the chase around the fireplace chimney is burning.  The fire department is called and thankfully extinguishes the fire before it does widespread damage, however the family must leave the home for several months as repairs are made. Read More

A portable electric generator should never be operated indoors, including garages, crawlspaces and sheds.

Winter Safety Tips for Portable Electric Generators

During winter ice storms, power to residences is often lost and homeowners revert to using gasoline powered portable electric generators.  It is often thought by some homeowners that leaving a generator outside in the severe weather may damage it or affect its performance and therefore resort to bringing the unit inside the shelter, typically, the garage. This is particularly hazardous when the generator is run for an extended period of time as carbon monoxide (CO) poisoning from the toxic exhaust gas can cause death. In addition, other hazards including electric shock, electrocution, fire and burns potentially can occur. Read More

[SLIDESHARE] Who Else Owns This Loss Course

When a property damage loss occurs, investigators are hired to determine how to purse or defend a subrogation case.  This slideshow gives an overview of several real-world investigations and helps viewers understand some of the issues involved in each incident.

A proper thermometer that includes an indication of dangerous temperatures and a needle stop.

Product Design is Critical to Consumer Safety

Author

As the holiday season nears, thoughts turn to wonderful home cooked meals with family.  Few things in life are more pleasurable than a traditional holiday turkey feast. Yet for an unfortunate few, holiday meal time can turn tragic if a turkey frying accident occurs.   While fried turkeys may be tasty, many fire safety experts feel that the reward is not worth the risk.  In fact, UL will not list a turkey fryer, even though a product safety standard, ANSI Z21.89 Outdoor Cooking Specialty Gas Appliances covers the product.  Additionally, the National Fire Protection Association discourages their use.  Links to these organizations’ statements on turkey fryers are included at the end of this blog. Consulting those links and watching a few online videos of a turkey fryer catching fire can be insightful, and a bit sobering, if you are thinking of frying a turkey.  Read More

Type ofLoss

Not sure what you're looking for?
Browse All

Select Loss Category