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Recent Blog Posts

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.

The Nautical Origins of Common Phrases

Ahoy, Mateys! We hear many phrases and words which we think we know the origin of – or at least they seem to have simple explanations. As a marine engineer, Mr. Steve Lindholm knows that words from the sea often wash ashore! Read on, Landlubbers, and we’ll Cut to the Chase.

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...

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).

Fire Effects on Steel

After a fire involving a building or industrial structure, there are often multiple types of damage to the building materials. Knowing how heat affects various building materials can be helpful in determining the level of damage to building components.