Flooding and mechanical systems

When we think of flooding, we often conjure up natural (overland) flooding events that are seen across the country each year. In fact, property damage caused by water related events accounts for nearly 70 per cent of emergency responses. But what about mechanical flooding issues in commercial and residential spaces? Leaks, burst pipes and flooding associated with plumbing infrastructure failures also have a substantial negative effect in commercial buildings.

When left unattended, water damage leads to all sorts of challenges, safety risks, business interruptions and higher costs related to remediation.

In 2022, First Onsite conducted a survey of Canadians’ main disaster concerns. Flooding was among the top worries. Whether it be overland flooding, a burst pipe, or a leak in the foundation, six in 10 Canadians have experienced some type of flooding at one point in their lives, at work or home.

Water is the essence of life. However, it also causes challenges for maintenance teams and property/ facility managers. It can dramatically affect the ability to operate key building infrastructure, impacting commercial and multi-family buildings. Being prepared can help reduce the extent of damage and get systems back online more promptly. Much like testing a fire alarm and evacuation plan, it is equally important to test a building’s flood preparedness plan.

LOCATION, LOCATION

When flooding occurs, whether from mechanical or natural flooding, mechanical systems in commercial and residential properties are one of the main areas at risk of damage. Owners and facility managers need to be aware of where mechanical infrastructure is located and how these systems can be impacted should a water event occur.

In commercial properties, mechanical systems are commonly located at the top floor or in the basement. Systems located in the basement present a higher risk because should flooding occur, much of the mechanical infrastructure ends up sitting in water. While less of a risk, flooding that affects infrastructure higher up in the building can also continue to travel down into office or residential spaces causing additional problems.

In residential homes, heating systems are typically located in the basement where any flooding would impact the HVAC system. In multi-family buildings, this issue is compounded as facilities are often heated using boiler plants. Failure of boiler plants does not simply create discomfort for the residents, it can bring with it the risk of frozen pipes. This is especially an issue in older buildings which can be insufficiently insulated allowing heat to easily escape via the building envelope.

When water impacts these systems there are several concerns. The first and most immediate is health and safety. Live