By Ryan Hazlett P.Eng., CFEI,
We use hot water for showering, cooking, clothing and dishware sanitation and space heating, so it is likely no surprise that water heating appliances are used in almost every household and business in the country. We generate hot water from a variety of appliances including hot water tanks, instantaneous hot water heaters, and conventional boilers. These appliances use a variety of energy sources including propane, natural gas and electricity. Despite the large variation in styles and methods used to heat water, the control systems, which make them operate safely, are actually fairly similar.
By Andrea Jeffery MSc., P.Eng.,
Product failure is not uncommon and is usually more of an annoyance than a serious issue. However, sometimes products fail and result in serious damage or injury. These are often the product failures that warrant investigation and analysis to identify any potential subrogation opportunities. Causes of these failures are typically due to one of three issues: installation, manufacture or misuse.
By Claudia Blandford M.E.Sc., EIT,
Concussions are a form of traumatic brain injury that typically result from a head impact. Also known as mild traumatic brain injuries or mTBIs, concussions present symptoms ranging from headaches and nausea to difficulties with memory or concentration. Because the physical signs are limited or challenging to quantify, they are difficult to accurately diagnose without patient input, leading to legitimacy questions in injury claims.
By Carla Ladner P.Eng.,
Expansive soils can often cause great loss to residential and commercial property. Numerous Canadian cities and towns are located in geographic areas with soils that are classified as clays having medium to high plasticity. This means that these soils are capable of absorbing water and will expand and contract as the moisture content changes. Activation of highly plastic clay (also called heaving or swelling) can cause damage to a building structure, a concrete slab on grade and/or surrounding landscaping.
By Andréanne Labrecque P. Eng.,
Do you notice excessive moisture in your basement in the form of water infiltration or the appearance of molds or whitish marks at the bottom of your foundation walls? The foundation drain could be the cause! Humidity problems in basements are more common than one might think. When basements are used as living space, a problem of excessive humidity can quickly become an irritant and cause significant health problems.
By Geoffrey Wowk P.Eng., CFEI,
When you enter a condominium or commercial building you will often see wet sprinkler heads located in the walls or hanging from the ceiling. These water suppression systems will extinguish fires involving wood components, couches (polyurethane foam) and other plastic materials, and are effective at controlling or extinguishing fires. But how do we control fires involving grease or other flammable chemicals, like paint?
By Paul Gullekson P.Eng., Regional Manager, Waterloo,
Most vehicles on the road today have an event data recorder (EDR), and the number of EDRs is only increasing as newer vehicles replace older models. EDRs are modules that will record data related to an incident (i.e. a collision). This technology has been around for over 20 years, so now is a good time to look back at how these black boxes have changed the way we investigate collisions.
By Michel Millmore P.T., CESA,
During firefighting, the attention is mainly focused on the health and safety of building occupants and first responders. Damages to property and the environment are most of the time a secondary issue. When the fire is over, damages to property and structures are often visible and rapidly under control. However, damages to the environment usually worsen and risk of exposure to many contaminants remains a concern.