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Archive for the ‘CLIMATE’ Category

BY LYDIA LEE

When designers need to calculate the environmental cost of projects, a new tech tool crunches the numbers.

FROM THE OCTOBER 2020 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

For the new Frederick Douglass Memorial Bridge project in Washington, D.C., landscape architects at AECOM made sure that the bridge’s adjacent 80-acre waterfront park would provide many environmental benefits: bioswales and rain gardens for treating stormwater, pollinator meadows, and extensive tree cover to reduce the urban heat island effect. But when they did a rough estimate of how long it would take for the carbon dioxide absorbed by the plantings to cancel out the carbon dioxide emitted from producing asphalt and concrete paving and from maintenance, they got a surprisingly high number: 39 years. Two other completed projects they investigated took even longer to become carbon neutral: 346 and 154 years. “It was pretty interesting—we had no idea we were that far off,” says Ignacio Bunster-Ossa, FASLA, the vice president of landscape architecture and urbanism for the Americas at AECOM.

These calculations can be done painstakingly by hand, but Bunster-Ossa’s group was able to get these results by using Pathfinder, a new carbon calculator and design tool designed specifically for landscape architects. The app’s developer, Pamela Conrad, ASLA, a principal at San Francisco-based CMG Landscape Architecture, has spent the past four years thinking about the carbon footprint of landscape projects. “A landscape looks green, so we assume that it’s good and that we do good things,” says Conrad. “But it has a unique carbon impact that is hidden to the eye—it’s only when we measure that we can fully understand this complex formula.” (more…)

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The things our art director, Chris McGee, hated to leave out of the current issue of LAM.

Photo by Robin Hill.

From “An Emerald Necklace at 70 Feet” in the October 2020 issue by Timothy A. Schuler, about a green roof system at the University of Miami devised by ArqGEO and the Henry Company that can keep everything planted amid hurricane-force winds.

“Hurricane ready.”

–CHRIS MCGEE, LAM ART DIRECTOR

As always, you can buy this issue of Landscape Architecture Magazine at more than 250 bookstores, including many university stores and independents, as well as at Barnes & Noble. You can also buy single digital issues for only $5.25 at Zinio or order single copies of the print issue from ASLA. Annual subscriptions for LAM are a thrifty $59 for print and $44.25 for digital. Our subscription page has more information on subscription options.

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This slideshow requires JavaScript.

FOREGROUND

 Miami’s Next Wave (Water)
In Miami Beach, Savino & Miller wrangles with local regulations that are designed to protect natural
resources but often clash with the advancing sea.

American Gothic 2.0 (Food)
A start-up launches with a very tech vision for enormous, centralized greenhouses and resilient food
systems, even if some of the details haven’t been worked out yet.

 FEATURES

The Plus Side
Carbon calculators for architecture can miss landscape benefits, so Pamela Conrad, ASLA, turned a
spreadsheet into Pathfinder, an app with landscape at its heart.

To the Core
At a tiny semiderelict site in Detroit, Julie Bargmann, ASLA, found a collaborator and an
urban forest that was waiting to be unearthed.

The full table of contents for October can be found here.

As always, you can buy this issue of Landscape Architecture Magazine at more than 250 bookstores, including many university stores and independents, as well as at Barnes & Noble. You can also buy single digital issues for only $5.25 at Zinio or order single copies of the print issue from ASLA. Annual subscriptions for LAM are a thrifty $59 for print and $44.25 for digital. Our subscription page has more information on subscription options.

Keep an eye out here on the blog, on the LAM Facebook page, and on our Twitter feed (@landarchmag), as we’ll be posting October articles as the month rolls out.

Credits: “The Plus Side,” City of Alameda, Recreation and Parks Department; “To the Core,” Chris Miele; “American Gothic 2.0,” AppHarvest; “Miami’s Next Wave,” www.shutterstock.com/imageMD; “A Way of Walking,” Katherine Jenkins.

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This fall, LAM will be highlighting professional and student winners from the 2020 ASLA Awards by asking designers to dive deep into one image from their winning project.

The Landscape of an Agreement: The Role of Regional and Geopolitical Landscape, Agriculture, and Religion in a Future Peace Agreement Between Palestine and Israel, by shelter_expanse, Professional Analysis and Planning Honor Award.

 

Image courtesy shelter_expanse.

“In our work we mostly try to investigate the relationships between people based on the land. We hope this image, in the form [of an] aerial panorama (like those of Heinrich Berann), succeeds in showing this by detailing two entangled populations making clear actions over the land, thus shaping their life and future. It is the landscape that delineates the ground for actions, the Judaean Desert at the foreground, and the Jerusalem Mountains at the back.”

“We always believe landscape can and must take a larger responsibility in society, toward greater equality and justice, with communal and spiritual aspects. But we were still surprised to find to what extent this is possible if one addresses the critical issues and sites with the right tools. In a region cultivated for thousands of years, landscape plays an enormous geopolitical role: People pray, live, and die for it. In a world torn by health and environmental crises, economic and political inequalities, we must come out into the land; leave behind the boutique work for a while. It should be based on a clear and universal set of principles.”

 —Matanya Sack, International ASLA, and Uri Reicher of shelter_expanse

 

The Palestinian–Israeli conflict in the West Bank is one of the world’s thorniest territorial disputes. The firm shelter_expanse, commissioned by Peace Now to look at the situation through the lens of landscape architecture, shows how considerations of topology, land use, and future development can inform negotiations by policy makers and analysts. The design team created a potential solution to the complex patchwork of overlapping claims based on its analysis of the region’s developed territories, agricultural lands, nature reserves, and heritage sites. Providing useful new data in the course of its research, the team created detailed maps of developed areas, turning up new communities not previously recorded. The resulting proposal is based on a vision for long-term stability and growth of a separate Palestinian nation and makes recommendations for specific land swaps between Israel and Palestine. The jury took note of the sensitive approach to the region, where “fights over ownership often neglect realities of the land itself,” and “the ability to de-settle land will hold lessons for flood-prone cities that face the prospect of retreat.”

—Lydia Lee

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This fall, LAM will be highlighting winning projects from the 2020 ASLA Awards by asking designers to dive deep into one image from their winning project.

Effecting Change to Avoid Disaster: Communicating Effective Wildfire Planning Strategies, by Design Workshop, Professional Communications Honor Award.

Prepared by Design Workshop, Inc., for CPAW.

“We were in need of a suite of graphics to effectively communicate to decision makers how the choices they make can help their communities mitigate the risks of wildfire. We wanted our audience to learn about different mitigation techniques to reduce wildfire risk to the structure and surrounding landscape.”

“The graphic showing the overlapping home ignition zones further makes the point that mitigation takes a collective response—particularly in areas of more dense development. Research shows that while a holistic, comprehensive approach is important for other aspects of wildfire safety, such as evacuations and response, the home ignition zone is a critical component for reducing structure losses and other property damage. These two scales of mitigation are not at odds; rather [they] work together when coordinated.”

—Carly Klein, Design Workshop, Inc., and Molly Mowery, Wildfire Planning International

 

Since 1970, wildfires have increased 400 percent in the United States, especially across the western states. At the same time, about 60 percent of new residential development is built along what is known as the wildland urban interface—a region particularly susceptible to highly damaging wildfires. Landscape architects increasingly need communication tools to help clients, public officials, and communities understand different wildfire mitigation strategies and include them in the planning and design process. In response to this need, Design Workshop created a series of graphics that underscore the importance of collective land use and wildfire mitigation decisions at the community scale, as well as the house, city, and regional scales. For example, a graphic on home ignition zones illustrates decisions that can be made in concentric circles moving from the house out to the surrounding area, including eliminating combustible material near the house, creating “fuel breaks” such as driveways and walkways, and maintaining a mix of appropriately spaced and pruned trees in the outermost zone around the home. “Armed with this visual toolbox of strategic risk-reduction methods,” the jurors concluded, “landscape architects are empowered to initiate conversations that would trade vulnerability for resilience.”

—Kim O’Connell

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BY KAMILA GRIGO

Copenhagen’s stormwater detention roads are everything but.

FROM THE SEPTEMBER 2020 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

As part of its climate change and urban flood mitigation strategy, Copenhagen aims to build 300 stormwater management projects over the next 20 to 30 years. Among the projects are a series of detention roads, entire streets redesigned to convey and detain rainwater locally to relieve the existing storm sewer system. It’s an ambitious target that reflects the city’s understanding that investment in these projects is a way of managing greater long-term risk to city infrastructure while providing citizens with multifunctional spaces in the short term.

The Sankt Kjelds Square and Bryggervangen by SLA is a pilot of the detention road concept. Completed in 2019, it comprises the entirety of the 2,300-foot-long Bryggervangen road and Sankt Kjelds Square, the roundabout in the middle. “It’s quite a simple project,” says Bjørn Ginman, a project director at SLA, who says that the fundamental concept is about seeing water move through the site. Rain gardens lining the pedestrian rights-of-way receive rainwater from sidewalks and the roofs of adjacent residential buildings, while road runoff is directed into larger infiltration ponds at the roundabout and at intersections, though not before an in-ground diverter (one of the municipality’s first applications in a public road context) deals with the most polluted first flush. (more…)

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BY JARED BREY

Buffalo plans the country’s biggest environmental impact bond to fund green infrastructure.

FROM THE AUGUST 2020 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

In 2018, the City of Buffalo, New York, cut the ribbon on Jesse Clipper Square, a small park named for the first Black soldier from Buffalo to die in World War I. The square, originally dedicated in the 1930s, was designed by John Edmonston Brent, one of Buffalo’s first Black architects. Today it sits in the median of William Street, a wide arterial street connecting downtown Buffalo to the neighborhood of Willert Park. As part of a broader greening of William Street, the park was expanded and planted with new trees and a rain garden. According to the Buffalo Sewer Authority, the project helps prevent some 284,000 gallons of water from entering the city’s combined sewer system during typical rain storms.

Green infrastructure projects like the William Street overhaul—small-scale interventions designed to manage stormwater on public streets, parking lots, and rooftops—are the bread and butter of the Buffalo Sewer Authority’s Rain Check program, a $380 million commitment that originated in a 2014 consent agreement between the city and the Environmental Protection Agency (EPA) to reduce combined sewer overflows (CSOs) and improve water quality. Under the terms of its Long Term Control Plan, Buffalo committed to spending $93 million on green infrastructure to manage stormwater on at least 1,315 impervious acres. In the first phase of the plan, Rain Check 1.0, which began in 2015, the sewer authority focused on public projects that could be carried out relatively easily, according to documents. But Rain Check 2.0, announced last spring, is going for tougher targets, mostly on private property.

To help push the project along, Buffalo’s Mayor, Byron Brown, announced in February that the city would issue a $30 million environmental impact bond (EIB) to help fund a grant program that will encourage private landowners to install green infrastructure. Environmental impact bonds are a kind of municipal borrowing that links bond investors’ returns to the performance of the projects funded by the bond. One of the first EIBs in the United States was issued in 2016 by DC Water, Washington, D.C.’s water authority, to help fund green infrastructure related to its own agreement with the EPA (see “The River Beneath the River,” LAM, November 2018). Since then, more cities have begun experimenting with the bonds, including Atlanta, New Orleans, and Baltimore. In many cases, new funds for green infrastructure equates to more work for landscape architects. (more…)

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