As the frequency of severe weather events escalates, resilient design solutions need to be found to safeguard people and the economy. With the recent devastation of Hurricane Irma, clearly coastal cities are increasingly exposed to the risk of flooding.
It isn’t just about hurricane winds, flooding and rising tides however. Resilient design must also address the shelter-in-place realities of tornadoes, blizzards, and heat waves. We are going to address all of these in our current blog series.
Living with Water
From Hurricane Katrina in 2005 to Hurricane Sandy in 2012 to Hurricane Irma this year, coastal cities are increasingly exposed to the risk of flooding and rising coastal tides. With sea levels rising in almost every coastal area in America, even without an epic storm like Irma, large percentages of urban coastal areas face the threat of flooding. Living with water seems to be a new reality and the risks facing coastal cities must be addressed with resilient design.
While current flooding strategies exist in many coastal areas, most do not thoroughly address future challenges. The resiliency of coastal cities relies on architects and engineers and city planners rethinking how they design cities but also the multitude of individual spaces that comprise the urban environment. Extreme weather heavily impacts our infrastructure and real property, creating unique issues for developers and owners.
Resilient Design Solutions & Sea Level Rise
Should traditional mixed-use buildings by redesigned to move restaurants and retail to higher floors? What impact does that have on consumers and what do the street-level spaces become? If you build high enough in a flood zone, the building and its occupants may be safe, but the building will be inaccessible in flooded conditions.
Climate resilient strategies include wet-flooding (letting buildings flood without damaging major equipment or the structure and continuing operation even without power) and dry-flooding (keeping the water out with tight envelopes). Wet flooding requires materials that are capable of being submerged in water for 72 hours. So how long can a material be submerged without compromising its integrity? Can biomimicry be used to develop flood resistant materials? Are today’s water resistant products also resistant to submergence? There are no simple answers to these challenges. Both proactive and adaptive strategies should be examined for the future of our built environment.
Rather than wait for disaster, many coastal communities are tackling the issue of resilient design. In the San Francisco Bay Area, the Resilient by Design Challenge is asking residents, community leaders and organizations to submit ideas that will shape a collaborative research process where design experts work with community experts. The idea is to develop new, creative and implementable design solutions that will protect the Bay Area’s most vulnerable shoreline communities from increasingly severe storms and flooding — while also addressing critical issues such as disparities in housing, income and access to open space.
The Venice Environmental Studies Program at Boston University is exploring these questions as well looking at how scientists and policy makers in the famous Floating City are collaborating to develop mutually beneficial solutions to protect against sea level rise. For instance, could a sea gate such as Venice’s flood barrier system Modulo Sperimental Elettromeccanico (MOSE) be built in Boston and how would it change that city’s architectural vernacular?
Because climate is no longer predictable, design professionals need to explore and consider an entirely new set of factors. Ignoring the reality of new and extreme climate variables could mean that the huge investments made in city infrastructure and buildings lose value over time.
More on resilient design next week!