Expertly Speaking

Motorcycle Fast Facts: Determining if Your Tires are Safe

Every street legal motorcycle tire has a serial number and a 4-digit date code indicating the year the tire was manufactured.  If there are only three digits, the tire was manufactured before 2000 and should be discarded.  For additional information contact Curt M. Beloy, PE at or by phone at 215-659-2010.

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A “Crash” Course on Motorcycles & Motorcycle Expertise

By Curtis M. Beloy, P.E. ::::

Motorcycles are unique vehicles that require special training and licensing to operate. They have unique handling characteristics and respond to disturbances differently than passenger vehicles. From a very simplistic point of view, a motorcycle can be thought of as being comprised of two wheels, a front structure that includes the handlebars and front fork, and a rear structure that includes the frame, fuel tank, and motor. The motorcycle contacts the ground at two points- the contact patches of the front and rear wheels. Unlike passenger vehicles, motorcycles are subject to unique vibrations and instability due to their ability to pivot about the joints on the motorcycle and the contact patches with the road. Because of this design, motorcycles can “weave” and “wobble” while traveling down the road, as well as lean/tip over (capsize) to the side.

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DJS Associates Using Forensic Digital Scans to Solve Crashes

DJS Associates in Abington uses forensic digital scanning to figure out how car accidents happen for court cases. Reporter Rachel Canelli spoke with the mechanical engineers about how they solve the hows and whys at a storage warehouse in Southampton. They’re opening a new facility March 1. 

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Jon W. Adams is now Director of Architectural & Heritage Services

DJS Associates is pleased to announce that Jon W. Adams is the Director of Architectural & Heritage Services.  Jon  oversees the development, monitoring, and implementation of  procedures for high-quality BIM documentation and data processing.  When speaking with clients regarding their specific project needs, Jon focuses on educating them on the process of data collection, via High-Definition Survey (HDS) Laser Scanning and HDR Panoramic Photography, as well as the different uses and benefits of scan data implementation in software packages.

Jon has been with DJS Associates for 5 years, involved with the planning, overseeing and execution of site documentation, as well as the creation of 2D and 3D as-built models.  Through this hands-on approach, and Jon’s attention to detail, he is able to help clients determine how to best address their needs on a case by case basis.

Jon can be reached via email at or by phone at 215-659-2010.

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Following the Logic, Through the Calculation of Damages

Douglas H. Sell, Jr. / Economic Damages Consultant ::::

Case Synopsis:  Plaintiff was severely injured in an accident and, as a result of injuries sustained, made a claim for lost earnings and future medical care expenses.  Plaintiff’s injuries were so severe, medical experts opined that the plaintiff had a reduced life expectancy; only eight additional years from the date of the incident.  Plaintiff’s economic expert prepared a report calculating an earnings loss of nearly $1 million from the time of the incident through the plaintiff’s anticipated work life, which was an additional 30 years from the date of the incident.  Plaintiff’s expert also prepared financial adjustments to the proposed future medical care expenses, which were estimated to be incurred for an additional eight years, based on the previously mentioned life expectancy opinion.

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Why Did The Vehicle Cross the Centerline? Was It a Criminal Action?

Steven M. Schorr, PE ::::

Case Synopsis: A pickup truck traveling northbound on a two-lane, two-direction roadway was approaching a slight curve to the right when the vehicle failed to remain in the northbound lane, crossed the centerline, and entered the southbound lane.  Yaw marks (tire marks indicating the wheels were rotating but sliding sideways) were present in the southbound lane, consistent with the pickup truck operator attempting to steer back to the right prior to contacting southbound vehicles.  The pickup truck operator claimed he passed out due to medical reasons and when he came to, he was in the opposite lane and attempted to steer back to the right.  The Criminal Complaint versus the pickup truck operator claimed that the vehicle operator failed to negotiate the curve in the roadway due to excessive vehicle speed as well as the presence of alcohol in his blood.

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