If we are to learn from the Surfside tragedy, now is the time for municipalities, investors, and residents to recognize their mutual self-interest and make resilience a top priority.
The tragic Surfside condo collapse is a stark reminder of the fragility of our seaside communities, and the urgent need for a stronger and safer built environment. My hometown of Miami Beach is among the world’s most climate vulnerable communities, so learning from disasters is critical to resilience – our ability to withstand physical hazard events, maintain functionality, and adapt to growing risks.
Many of Miami’s buildings were constructed in the 1960s through 1980s, when building standards and practices were lax. Faced with prolonged exposure to wind, water, and saltwater encroachment, building management has frequently chosen to overlook the critical maintenance needed to counter structural corrosion. Furthermore, the absence of a sustained municipal focus has exacerbated the situation.
Regrettably, we only think about disaster preparedness after disaster strikes.
In the 1970s, a different building collapse prompted Miami-Dade to adopt the 40-year recertification requirements that we have today. However, these continue to face widespread noncompliance and poor enforcement. A recent review by the City of Miami Beach revealed that 507 buildings from this period are undergoing recertification, and 22% are overdue. In 1992, the aftermath of Hurricane Andrew caused South Florida to adopt world-renowned wind resilience standards. Now, in response to the Surfside tragedy, Miami-Dade County is considering mandatory 20-year recertifications with added waterproofing criteria.
In both human and economic terms, it pays to be less reactive and more proactive.
Research at MIT reveals that in disaster-prone areas resilient construction pays for itself within a couple of years. Over the course of a building’s lifespan, repair costs associated with natural hazards often exceed the cost of initial construction. Projects that invest in small resilience upgrades upfront are cost-effective for everyone.
This is especially true in Miami Beach where a direct hit from a Cat 4+ hurricane is considered very likely by 2040. To mitigate the potentially devastating impact of such an event, buildings would benefit from a combination of resilient investment and enhanced municipal standards, inspections, and enforcement.
- Permitting criteria should be updated to withstand Cat-4 flooding, similar to codes imposed for wind post-Hurricane Andrew.
- New construction should stand more than 6-ft above base flood elevation.
- Building designs should incorporate wet floodproofing, a design technique that allows water to flow through a structure to minimize contact with walls and inner contents.
- Columns and slabs should contain enough concrete to protect rebar reinforcements and prevent water infiltration.
- Concrete mixes should include a higher pozzolan content to reduce corrosion in columns and slabs that support buildings. Pozzolan is a fine-grained cementitious component that reduces permeability (the ability of water to penetrate concrete) and adds strength.
- Critical road arteries and feeders should be resilient to Cat-4 hurricanes, enabling post-disaster relief and recovery. Currently, many are not.
- All 4+ story structures built before 1995 should be inspected now, and include 2-year correction requirements. If they are particularly at risk, it would be prudent to require subsequent 5-year intervals for checkups.
- Older buildings should invest in dry floodproofing, a design technique that strengthens structural components and protects essential utilities.
- To improve transparency, there should be a public database of buildings undergoing recertification. Renters and potential buyers deserve to understand any risks that lurk in their homes.
To better adapt to natural hazards, we must think more broadly – reintegrate the natural habitat to both protect and improve our quality of life.
Miami Beach should:
- Rethink land use – create parks with artificial lakes to improve stormwater drainage and manage urban pollutants (similar to the Jacobs Engineering proposal to convert an unused golf course into a 19-acre park).
- Consider innovative projects to address storm surges – build sediment berms and plant mangroves in Biscayne Bay along the low-lying west side of the island (similar to the Swire Properties Next Miami proposal that offers a clean and green alternative to the Army Corps of Engineers’ giant concrete wall).
- Repurpose low-lying properties that abut Biscayne Bay – offer equitable floodplain buyouts to replace vulnerable structures with promenades and small beaches that double as flood barriers.
Let’s embrace how we live with water and give it some Miami Beach flair. Imagine jumping on a high-speed elevated train instead of sitting in traffic on congested and often-flooded roads. Leisurely walking, biking, boating, or paddleboarding to new restaurants, shops, and music venues along the banks of canals built to replace our low-lying streets. Now is the time to safeguard and evolve our slice of paradise.
Will we rise to the occasion?
Robert Henry Fetell is currently pursuing his Masters of Applied Geoscience at the University of Pennsylvania. He is the founder and chair of the Resilience Youth Network, and serves on the board of the Miami Beach Next Generation Council.
Original article appeared in the Miami Herald