From the Archives: Foundation Damage

A residence in the Gulf Coastal Plain’s Quaternary deposits of sand- and clay-rich soil experienced a variety of structural damages including plasterboard fractures, mortar separation, bulging windows, and foundation fractures. Examination of the upper structure damage, the foundation, and the soil was undertaken. The western portion of the residence was less damaged than the eastern, … More From the Archives: Foundation Damage

From the Archives: Seat Installation Failure

A tractor operator was injured in the groin area when the machine’s seat clamps failed, releasing the seat. The seat was improperly installed using single bolted electrical straps (image below). The tractor was operated for a significant amount of time with this hazard, long enough for the electrical straps to rust. New electrical straps were … More From the Archives: Seat Installation Failure

Erroneous Drug Quantity Measurements using Uncalibrated FTIR/ATR Instruments

When prosecutors present the results of a piece of evidence analyzed in the lab, a question often comes up: how good is the measurement? It’s an important one to ask, because the error bars tell you how good the measurement is. If a Breathalyzer measurement was collected by police, and the result was near the … More Erroneous Drug Quantity Measurements using Uncalibrated FTIR/ATR Instruments

Practical Cybersecurity

Dr. Elizabeth Jensen’s presentation to the American Society of Safety Engineers (soon to be Safety Professionals) Energy Corridor meeting is linked below. Practical Cybersecurity: Where You Fit into the Big Picture

Stairwells and the Codes

Being that humans are creatures of habit, an uneven stairwell challenges users, even those grown familiar with asymmetries in construction. The most critical components of a stairwell to avoid becoming a tripping or slipping hazard include a decent (and uniform) tread and riser value. In the case of International Building Code specifications, this is 11 … More Stairwells and the Codes