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Recent Blog Posts

Automatic Water Shut-off Valves

To anyone that has ever had a water line burst in their house, it is clear, the uncontrolled discharge of water into an occupied space is a problem. To anyone that has ever had a water line burst in their house, it is clear, the uncontrolled discharge of water into an occupied space is a problem...

Freezing a Frost-Free Outdoor Faucet


A personal case study of frost-free outdoor faucets and the time a fracture leak was found in a valve of an outdoor faucet due to sub-zero temperatures.

Why Frozen Pipes Rupture

With winter (or frozen pipe season) upon us, I’m reminded about misconceptions regarding frozen pipes and pipe bursts that were located in a heated space. The following information will illustrate how this happens.

Where did the Water Come From?

portrait photo of Richard

Richard T. Edwards, P.E.

As a materials engineer with some experience in chemistry, I am often asked to assist other engineers in determining the source of water in a crawlspace or an affected area. Obviously, seawater versus freshwater is not a difficult determination. This can be differentiated by simple turbidity tests...

A Forensic Engineer’s Journey to Becoming a Drone Pilot


The "Aha!" Moment - When I realized that an unsafe situation I was in while examining a roof for hail damage could have been solved by a 30-minute drone flight. That was when I decided to get serious about becoming certified to fly drones for commercial purposes through the Federal Aviation...

Air Infiltration & Leakage (Part 2)

Air infiltration (air that comes in) and air leakage (air that goes out) negatively impact energy usage and costs in conditioned spaces – for homes and businesses alike. We’ve talked about what infiltration and leakage are and how to combat them at a basic level, but to really fix the problem for...

Drywall: Levels of Finish

portrait photo of Anthony

Anthony P. Centurelli, P.E.

An EDT Case Study regarding issues pertaining to drywall within a residence under construction during a stormy and cold fall season. Was it due to the storm or power outage? Or was it just inadequate surface preparation of the drywall by the contractors? And what are the industry-wide recommended...

Renewable Energy: Pumped Storage


Pumped storage is the process of pumping water uphill from one body of water to another which allows power companies to store the energy generated during the low demand periods of the day so that it can be used to meet later peak demands.

Fire Effects on Concrete

Concrete exposed to the elevated temperatures of a fire can experience both mechanical changes and chemical changes. Both can provide pathways for direct heating of exposed Reinforcing Steel (rebar).