Archinect - News

Brooklyn group opposes new Tony Hawk-backed skatepark: 'Pouring concrete is Stone Age'

2024-04-08T11:58:00-04:00

The city has construction plans for Mount Prospect Park, once the site of a lookout station for George Washington’s army. About 40,000 square feet of the 7.79-acre park are to be turned into one of the largest skateboarding spots on the East Coast. Some nearby residents are fighting the plan. [...] They say the poured-concrete skateboarding facility would take up precious green space in a city that does not have enough of it.

A total of four skatepark designs are scheduled to be built in the Bronx and Brooklyn, courtesy of The Skatepark Project (or TSP). Costs for a new park at the contested Brooklyn location are about $100,000.

The Mount Prospect Park location calls for 40,000 square feet worth of concrete to be poured, leading to local protests recently. Hayley Gorenberg of the group Friends of Mount Prospect Park told the Times, “Paving green space isn’t acceptable to the community, and it’s not the way for New York City to look forward to a more resilient future. It’s backwards thinking.”

Tony Hawk is also involved in Peterson Rich Office and OSD’s new adaptive reuse design for the Shepherd Gallery and Art Center in Detroit.

Swedish companies unveil low-carbon wall system 60% lighter than traditional concrete

2024-03-15T12:45:00-04:00

A group of materials companies in Sweden has collaborated on a hybrid wall element with a lower carbon footprint than conventional concrete wall elements.

The joint venture, comprising concrete element manufacturer Heidelberg Materials Preca and engineered timber manufacturer Metsä Wood, is now rolling out the element for live construction projects.

Image credit: Heidelberg Materials Preca / Metsä Wood

The wall consists of a facade element in a sandwich construction with an outer layer made of 'climate-improved' concrete, intermediate insulation, and a load-bearing inner panel made of strong, material-efficient laminated veneer lumber. According to the group, the wall module has approximately 30–50% less of a climate impact than an equivalent traditional concrete wall while also being 60% lighter.

Image credit: Heidelberg Materials Preca / Metsä Wood

To test the wall, the team constructed a home using the elements. The structure was equipped with moisture sensors to monitor the wall ...

Construction starts at SOM-designed 400 Lake Shore Drive replacement in Chicago

2024-03-05T14:24:00-05:00

The much-publicized void left behind in the wake of Santiago Calatrava’s failed Chicago Spire proposal is finally being attended to, as now the Chicago Sun-Times and other outlets are reporting on developer Related Midwest’s start of construction for the SOM-designed replacement at 400 Lake Shore Drive.

The 76-foot hole was partially filled by the 12-hour concrete pour required for the mat foundation for the two-tower scheme that will yield 1,100 apartments and the new DuSable Park at the three-acre site by Q3 2027.

Video showing the 12-hour mat foundation pour, which included 250 concrete trucks delivering 9 million pounds of concrete. Video courtesy Related Midwest

This update comes after caisson permits for the project were granted in December. David Childs is responsible for the design, which references Chicago's vernacular masonry and terra cotta architecture in two faceted 765- and 875-foot forms. Urbanize Chicago reports there to be a total of nine million tons of concrete ...

America's first 3D printed fire-resistant ADU concept is under construction in Southern California

2024-02-29T11:57:00-05:00

A new 3D printed ADU prototype made of concrete and other fire-resistant materials is under construction as part of a demonstration taking place this month in Walnut, California.

The first-of-its-kind project was born of a collaboration between the fire departments of both Walnut and Los Angeles. A local couple volunteered to give the host the design for general contractor Builtech Construction Group in the interests of applying lessons valuable for disaster prevention at a time when an influx of peri-urbanization has left the state more susceptible to fire-damaged structures than ever before.

Image courtesy RIC Technology

The unit is both non-combustible and fire-resistant and is being constructed using contractor RIC Technology’s robotic 3D printer.

Construction takes only 20 days from the start of the printing process to finish after the foundation has been laid. It yields a total of 1,200 square feet of space with 2 bedrooms and 2.5 bathrooms. The design works by eliminating any...

Production begins on the world’s tallest 3D printed structure

2024-02-16T11:40:00-05:00

Production has begun on a 3D printed tower in Switzerland, which is expected to be the tallest structure of its kind in the world. Named the ‘Tor Alva’ or ‘White Tower,’ the project is currently being fabricated at ETH Zurich, where the first eight columns of the tower’s lower floor commenced 3D printing in February.

Image credit: Hansmeyer/Dillenburger

The columns’ fabrication sees a robot extrude the concrete in 8mm-high layered print paths. In a departure from traditional concrete construction, the 3D printing process means formwork is no longer required, freeing new avenues for the team to experiment with shapes, surface details, and cavities. The tower will also be the first instance of printed concrete being used in a fully structural manner, with steel reinforcement inserted during the robotic production process.

Image credit: R. Masallam

The tower will be constructed in the remote Swiss Alps village of Mulegns, where it will host music and theater performances. At 98 feet (nea...

Take an inside look at the form-making process for LACMA's new David Geffen Galleries

2024-02-06T12:15:00-05:00

LACMA’s Unframed blog recently profiled the work of contractor Clark Construction to build the concrete structure for the Peter Zumthor-designed $750 million new David Geffen Galleries extension. The concrete will be left untreated to match its architect’s long-established aesthetic and elevate the "hand of the craftsman."

Work will now commence on the installation of the 347,500-square-foot gallery’s interior walls, plus its exterior facade glazing, MEP systems, and roof-level horizontal decks.

"The building has no columns!," Chris Bell, the project executive for Clark Construction, shared with Unframed. "Instead, there are seven 30-foot-tall park-level pavilions that support the entire exhibition space. That's three football fields long with supporting cantilevers that hold people, glass, artwork — cantilevers that are 60 feet long. Being able to achieve and balance the structural and architectural requirements, it's a feat unto itself."

The update comes after LACMA celebrated t...

Art performance at Tadao Ando's concrete MPavilion features grayscale gelato

2024-01-26T17:26:00-05:00

An exciting and tasty art performance has taken shape at the Tadao Ando-designed MPavilion in Melbourne, Australia.

It comes in the form of grayscale gelato, created by Brazilian artist João Loureiro in collaboration with local creamery Piccolina Gelateria. The treat is available in six different flavors, each a different shade of gray ranging from light gray to nearly black. No flavors are labeled, stimulating a unique and surprising sensory experience with pavilion visitors during the Australian summer months.

View this post on Instagram A post shared by Piccolina Gelateria (@piccolinagelateria)

The gelato colors mirror the pavilion’s aesthetic, which comprises enclosed concrete perimeter walls and an aluminum-clad, single-column main structure and roof.

Related: Tadao Ando's MPavilion opens in Melbourne. Image: Beatrice Eckermann

As stated by MPavilion, "...this work questions our sense of comfort and forces us to rethink associations that have been rooted in u...

Holcim and Zaha Hadid Architects team debuts second 3D printed concrete bridge concept

2024-01-14T08:00:00-05:00

Zaha Hadid Architects has released details of a second collaborative effort with Holcim on a 3D printed bridge concept that was first debuted as part of the 2021 Venice Architecture Biennale.

The new ten-ton Phoenix design offers an evolution of the innovations seen in the previous Striatus bridge, the original blocks of which the team was able to recycle in the second iteration.

Image: Vincent Delesvaux

For the project, Holcim was able to deliver Phoenix with a 25% overall reduction in CO2 footprint compared to its earlier counterpart, thanks to the use of an updated ECOCycle circular technology and a special proprietary concrete ink that was also developed by the company. The construction was completed recently in Lyon, France, on the grounds of Holcim’s Innovation Hub. Its proponents are now citing it as a milestone for the design industry’s quest to develop low-carbon structural solutions at different scales.

Image: Holcim

Shajay Bhooshan, head of Zaha Hadid Architects' Computati...

Zooco creates ‘Brutalism over the sea’ with Spanish restaurant inside renovated 1970s concrete structure

2024-01-11T13:55:00-05:00

Madrid-based studio Zooco has completed an extensive renovation and extension of a 1970s concrete structure in Santander, Spain. The Cantabrian Maritime Museum restaurant has been constructed inside an architectural complex that also includes an Oceanographic Center designed by Vicente Roig Forner and Ángel Hernández Morales, built between 1975 and 1978.

Image credit: David Zarzoso

The original concrete structure sees two square forms connected by a canopy. The interior spans three floors with a central courtyard covered by a vault of paraboloid membranes, while a 2003 renovation and extension saw the addition of a pyramid-form aluminum structure to the western facade and roof.

Image credit: David Zarzoso

For their 2023 overhaul of the scheme, Zooco inserted a new space on the second floor to house a restaurant and terrace. To facilitate the restaurant, a new volume was constructed to resolve issues with the roof and facade, while ...

Former Lakers favorite Rick Fox now has carbon-neutral concrete company aimed at building change

2024-01-05T18:36:00-05:00

His pitch is pretty straightforward. In a world where companies—including construction companies and their clients—are trying to gloss their climate credentials, and where countries have made commitments to hit carbon reduction targets, why wouldn’t you shift wholesale to carbon-neutral concrete? The answer, Fox says, is simply inertia. “Why would they change what’s working for them? They’ve been burning rocks for 200 years.”

The company Fox co-founded with an architect named Sam Marshall, Partanna, has been active since 2018 in using its product, which was developed with the help of materials science researchers using a mixture of brine taken from desalination plants and slag. Arizona State University's Dwarak Ravikumar says an outside review of the data that pertains to its environmental footprints and scalability is needed, according to another recent profile in The Verge.

Still, Fox's ambits are admirable for someone of his position and fame. He says Partanna has a plan to construct one thousand homes in the country. Their product can also be used in coral reef development. "The business plans to build and operate facilities around the world, initially in key territories where it has long-term offtake agreements with customers, including The Bahamas, the Middle East, and the United States," their website reads.

Additional details about the year-old operation can be found here.

...

Minimalist concrete apartments fill a narrow site in Tokyo, designed by Ryuichi Sasaki Architecture

2024-01-05T12:30:00-05:00

Tokyo-based Ryuichi Sasaki Architecture has completed a residential scheme in the western part of the Japanese capital defined by an exposed concrete structure on a constrained site. According to the designers, the three-unit scheme “emphasizes maximal utilization of natural energy and pursues comfortable livability.”

Image credit: BAUHAUS NEO

Designed in collaboration with Kiz Architects and Hidetaka Gonai/Escenario, and completed in the winter of 2022, the project measures only 15 feet wide and 46 feet deep. Responding to the site’s narrow constraints, the scheme sees a single staircase linking four levels, “utilizing the space efficiently to ensure ample living areas.”

Image credit: BAUHAUS NEO

Image credit: Sherpa

The staircase is visually integrated into the living spaces, serving as both functional steps and display storage. In addition, the top floor incorporates a workspace counter atop the staircase to facilitate remote working for residents. Elsewhere...

Drexel team uses bacteria to create self-healing concrete

2023-12-29T11:40:00-05:00

A team from Drexel University has published their research into a self-healing system for concrete. The team, operating in the University’s College of Engineering, embedded bacteria in their concrete system that, when activated by water, can repair cracks in the concrete.

Named ‘BioFiber,’ the Drexel system sees a polymer fiber encased in a bacteria-laden hydrogel and a protective, damage-responsive shell. A grid of BioFibers embedded in a concrete structure can improve the system’s durability, prevent cracks from growing, and enable self-healing, according to the research published in the journal Construction and Building Materials.

The team was inspired by the ability of human skin tissue to self-heal, and the ability of vascular systems to help organisms heal their own wounds. The team identified a strain of Lysinibacillus sphaericus bacteria as a bio-healing agent for the fiber, which is found in soil and can produce a stone-like material capable of healing exposed cracks in con...

As the UK’s Raac problems grow, concerned educators complain of a stalled government response

2023-12-27T18:00:00-05:00

The number of schools with reinforced autoclaved aerated concrete (Raac), which the Health and Safety Executive has said is now 'life expired' and could collapse 'with little or no warning,' has been steadily rising since the government announced the sudden closure of more than 100 schools at the end of August, just days before the start of the new academic year.

There are now over 230 schools and colleges listed on the government’s register of buildings under consideration for Raac replacement and repair. The challenge is twofold at present, with contractors' inability to hasten repairs before 2026 being made worse by Prime Minister Rishi Sunak's cuts to the rebuilding program just weeks after it was initiated.

No one knows exactly what will happen to the endangered schools in the interim. An anonymous headteacher shared with The Guardian, “The best result would be rebuilding as we have so many problems, but actually we just need some certainty. Parents like shiny new buildings, and Raac definitely isn’t helping our reputation.”

The country's National Audit Office estimates the cost of repairs to be £2.2 billion (or about $2.81 billion USD) annually at present.

Omer Arbel balances nature and form in this award-winning Canadian Pacific Northwest house

2023-12-01T18:42:00-05:00

Vancouver-based Omer Arbel Office (OAO) has completed work on their award-winning project 75.9, a new construction of a private home located adjacent to a hayfield in rural British Columbia.

The design scheme won in the 'Future Project House' category at the 2019 World Architecture Festival.

Image courtesy Omer Arbel Office (OAO)

The complex was completed this year at an undisclosed cost and features a monumental column resembling a lily pad, produced via a proprietary concrete pouring method. A demonstration column had to be constructed on the site in order to get the clients' final approval. The result is an aesthetically pleasing four-volume arrangement recovered by the landscape that blends process and material into a singular modern and bucolic harmony.

Image courtesy Omer Arbel Office (OAO)

“For 15 years, we’ve developed a method of working with materials at the scale of an object,” Arbel says of his...

UK museums report new Raac concrete investigations as safety concerns spread

2023-11-09T14:01:00-05:00

The issue of unsafe concrete panels in the aging structures in the UK is affecting museums and cultural institutions who now report conducting their own building safety investigations after a spate of school closures linked to the issue first stirred controversy in August.

A report compiled by The Art Newspaper details efforts on the part of the Southbank Centre, Royal Academy of Arts, and others to document and deinstall reinforced autoclaved aerated concrete (or Raac) panels that have been proven to be susceptible to water damage and structural failures.

No use of the materials had been discovered in the Barbican Centre, Victoria and Albert Museum, British Museum, or newly renovated National Galleries Scotland, all four institutions independently confirmed.

Twentieth Century Society Director Catherine Croft told the publication: “There is an urgent need to understand where Raac was used, to examine whether or not it is now failing in each case, and then work out how best to repa...

New York to introduce ‘first-in-the-nation’ mandate for concrete emissions

2023-09-26T12:21:00-04:00

New York State has announced the adoption of a ‘Buy Clean Concrete’ mandate for state agencies, described by Governor Hochul’s office as a “first-in-the-nation” commitment to environmental sustainability. The plan contains mandatory rules for establishing emissions limits on concrete used in state-funded public building and transportation projects.

Starting from January 1, 2025, Environmental Product Declarations (EPDs) must be submitted for all concrete mixes used in qualifying state construction projects and must demonstrate that they achieve an environmental impact below the limits set by the state. The state hopes such EPDs will “provide transparency and a more robust accounting of a concrete mix’s greenhouse gas emissions and enable state agencies and other stakeholders to make more informed choices in reducing emissions.”

The measure will apply to state agency contracts exceeding $1 million that involve the use of more than 50 cubic yards of concrete. Exceptions are provided f...

Hike in fuel costs drives first increase in construction input prices in six months

2023-09-18T08:00:00-04:00

Construction input prices ticked up 1.5% in August, the first increase in six months, due to a surge in energy costs, according to a new Associated Builders and Contractors’ analysis of U.S. Bureau of Labor Statistics Producer Price Index data released Thursday.

These readings come as a shock as the flattening of costs suggested that inflation was cooling. According to a separate analysis from the Associated General Contractors of America, a major increase in diesel fuel costs in August drove the overall increase in materials prices. The producer price index jumped 34.6% last month, which is the largest one-month hike since 1990. In addition, other construction materials such as concrete and switchgear also experienced price increases.

Associated Builders and Contractors (ABC) chief economist Anirban Basu expects future readings to demonstrate excess inflation as labor costs continue to rise, aggressive spending continues, oil-producing nations limit output, and global supply chains reorganize.

Switzerland releases postal stamp honoring concrete architecture

2023-09-01T11:13:00-04:00

Switzerland's postal service Swiss Post has released a new concrete-inspired stamp. The ‘Art in Architecture’ stamp is the third edition of a series launched by the postal service in 2020, which seeks to “reflect Swiss Post’s commitment to art.”

The stamp follows the previous two editions in incorporating their subject’s material in the stamp itself. Made using cement pigments, the latest stamp holds an ultra-matte finish to give the depicted concrete wall a “tactile dimension.”

Image credit: Swiss Post

“This is a material that plays an important role in the history of architecture,” Swiss Post explains. “Concrete helped art, previously seen by most people as decorative, to attain its independence as an art form. As a stamp design, the symbolic concrete wall represents an artistic pillar that characterizes Swiss Post buildings throughout Switzerland.”

The wider project derives from an initiative that began in Switzerland after the Second World War which said that one percent of publi...

Tadao Ando opens ‘Space of Light’ pavilion in South Korea

2023-08-28T17:21:00-04:00

Tadao Ando has shared photos of his studio's new Space of Light meditative pavilion at the Museum SAN in Wonju, South Korea.

The second of two pavilions designed for the ten-year-old rural arts institution opened earlier this month. It is the third structure on the Ando-designed campus in Gangwon Province and coincides with the museum's exhibition of his youthful early designs — a tourist draw that's recently been extended for another three months owing to the self-taught Pritzker winner's tremendous popularity.

Image courtesy Museum SAN

The object of this design, Ando says, is to emulsify nature into the user’s experience, incorporating light into the otherwise murky auspices of the concrete-walled pavilion’s interior space uninterrupted in a way that recalls the philosophies embodied in his breakout 1989 Church of Light in Osaka, which features a nearly identical narrow cross opening in its façade.

Image courtesy Museum SAN

Offering a demarcation from its domed 2019 predecessor, wh...

Coffee grounds can make concrete a little stronger, too, according to a new RMIT study

2023-08-28T11:58:00-04:00

Engineers in Australia have found a way of making stronger concrete with roasted used-coffee grounds, to give the drink-additive a "double shot" at life and reduce waste going to landfills. [...] Published in the Journal of Cleaner Production, the study by RMIT engineers is the first to prove that waste coffee grounds can be used to improve concrete.

The study found that three different coffee ground samples each increased their concrete pour’s compressive strengths by up to 30% once their organic compounds were broken down through pyrolysis. The discovery could go a long way in combatting issues such as food waste and the carbon impact of concrete’s still rampant use as a construction material worldwide. RMIT will follow up with additional mechanical and durability tests on the same samples.

"Our research is in the early stages, but these exciting findings offer an innovative way to greatly reduce the amount of organic waste that goes to landfill," the paper’s co-lead author, Dr. Shannon Kilmartin-Lynch, explained. Discarded PPE may also have a stirring second life in construction, according to a separate study the same team of researchers published last year.

This experimental project in South Korea by On Architecture utilizes concrete infused with rice straw

2023-07-07T15:54:00-04:00

Korean practice On Architecture INC. has created a project that aims to regenerate a village with an aging population in Icheon-si, South Korea, renowned for rice and flower farming.

Named NONSPACE, the project proposes new possibilities through an experimental cross-cultural facility or “cross-space,” as described by the architects, enabling interactions between diverse cultures. It intends to be a site for a variety of programs, going beyond the functions of a typical commercial space.

The architects employed an experimental construction technique by combining exposed concrete with rice straw to form an indoor atmosphere that feels like a straw-woven space.

Before concrete placement, bundles of rice straw were laid on the slab form and drenched with water in order to absorb the concrete’s moisture. The form and bundles were eventually removed, leaving the rice straw embedded in the concrete. Over time, the atmosphere of the space will transform as the straw undergoes changes.

NON...

SLAS architekci designs colorful multifunctional public park in Poland

2023-07-07T15:06:00-04:00

Polish firm SLAS architekci has injected an eye-catching multifunctional public space into a university campus in the southern Polish city of Chorzów. Called “Activity Zone,” the project was a nominee in the 2022 European Union Prize for Contemporary Architecture – Mies van der Rohe Award.

The park was completed in 2019 for the University of Silesia. It is located at the former site of a demolished military building where there were a number of pre-existing trees.

The main goal of the project was to transform this neglected, wooded area where the campus is located into a lively, leisurely location for the public to enjoy. It aimed to promote the university and establish a new green space for the city.

“Activity Zone” was designed as a perforated concrete platform that hosts a diverse program, including a student leisure zone, children’s play devices, fitness areas, individually des...

Adjaye Associates' 130 William debuts in Lower Manhattan

2023-06-30T19:15:00-04:00

David Adjaye’s statement-making first skyscraper design for the New York City market has debuted in Lower Manhattan, marking the culmination of a project that will stand as a testament to his attention to historical context and the elevation of craft in architecture.

The design for the 66-story 130 William residential tower in the heart of the Financial District includes a total of 242 units whose careful, well-appointed interiors are complemented by another 20,000 square feet of ground-floor retail and curated amenities apiece.

Photos of the newly-completed project reveal a range of built-in luxury options, including a small IMAX theater, two lounges, a golf simulator, basketball court, full-scale health club, infinity-edge spa pool, dry sauna, and yoga studio. The ten uppermost floors of the building are lined by loggia terraces, with a rooftop observation deck located on top that offers residents privileged views of the city’s skyline and harbor beyond....

Port Authority of NY & NJ reaches milestone with new low-carbon concrete standards

2023-06-29T14:09:00-04:00

The Port Authority of New York and New Jersey announced earlier this month that it has reached a major milestone in one of the most ambitious low-carbon concrete programs of its kind among U.S. transportation agencies.

Originally introduced in September 2020, the Clean Construction Program aims to reduce embodied carbon, promote the circular economy, and reduce air pollution from construction across all of the Authority’s projects through a range of initiatives. They include the incorporation of LEED and Envision-equivalent standards, utilizing low-carbon concrete, collecting environmental data from contractors, facilitating pilot projects, waste matching for concrete, asphalt, and soil, and requiring low-emissions vehicles on site.

The agency took a major step forward by significantly strengthening its requirements to use sustainable concrete mixes in all future construction projects as part of its commitment to achieving net-zero emissions by 2050.

Related on Archinect: UN Secr...

ARQBR Arquitetura e Urbanismo brings a circular concrete church to Brasília

2023-06-26T17:41:00-04:00

Brazilian firm ARQBR Arquitetura e Urbanismo’s Church of the Holy Family is a striking new circular, concrete structure that seeks to connect Brasília’s urban and natural landscape.

Image: Joana França

The church is located on the edge of the capital’s EPIA (Park Road of Industry and Supply), which was one of the main components of the radio-centric road system implemented by Brasília’s planner Lucio Costa.

Image: Joana França

The structure’s architectural concept aims to adopt the relationship between spirituality, nature, and community. It brings together a collection of simple, concrete monoliths, reflecting the three core principles of Brasília’s design.

Image: Joana França

They are the ability to open to the horizon, the inseparability between public and private spaces, and the use of the landscape as a structuring and fundamental element of the architectural configuration.

Image: Joana França

The church’s circular volume is suspended by six pillars. This forms a small opening ...

UN Secretary-General calls for significant changes to the cement industry ahead of 2050

2023-06-15T19:38:00-04:00

In an address to the Global Cement and Concrete Association in Zurich on Tuesday, United Nations Secretary-General António Guterres laid out his vision for changes to the industry he says are “fundamental to building a better world.”

Speaking to executives assembled in a “call to action,” Guterres asked for “concrete pledges from the concrete industry” before laying out his trifold ambits to ban coal-fired power in cement production, induce governments and industry to accelerate decarbonization efforts, and the furtherment of loftier emissions reduction targets and other plans in line with UN policy guidelines.

Seconding the Secretary's vision, the CEO of the Global Cement and Concrete Association, Thomas Guillot, added: “We applaud all the action our members are taking to implement carbon-cutting measures, and the latest data shows emissions are coming down. But many challenges remain, which we must overcome, if we are to achieve net zero, including enabling polices and regulations...

From dirty diapers to clean concrete to affordable housing

2023-06-14T18:55:00-04:00

In a novel approach to sustainable construction, a team of researchers led by Siswanti Zuraida, Bart Dewancker from Kitakyushu University in Japan, and Romi Bramantyo Margono, have pioneered a method to utilize non-degradable waste, notably disposable diapers, as composite materials for building low-cost housing. This compelling study is attracting substantial interest within the architectural community, providing an enticing alternative to traditional building materials, which can account for up to 80% of a dwelling's overall worth.

The research centered on the potential of disposable diaper waste in the construction of affordable housing, adhering to Indonesian building standards. The results showcased that disposable diaper waste could make up to 10% of structural components and 40% of nonstructural and architectural components in a housing unit. A prototype housing structure demonstrated that approximately 1.73 m^3 of disposable diaper waste could be repurposed for a housing are...

San Francisco has over 3,400 concrete buildings at risk of seismic collapse

2023-05-25T17:00:00-04:00

Famous historic sites, low-income apartments and Twitter's headquarters all appear on a previously unpublished draft list of 3,407 concrete buildings in San Francisco that may be at high risk of collapse in a major earthquake, according to a copy of a city government document obtained by NBC News through a public records request.

The city says the list is still a “preliminary draft inventory” of at-risk concrete structures, some of which were built after 2000, according to NBC. Who will actually pay for the mass retrofits still hasn’t been hammered out yet, leaving many to speculate as to its near-term feasibility. Some engineers expect the compliance effort to take decades. Current U.S. Geological Survey predictions state the Bay Area faces a 20% risk of suffering a 7.5 magnitude quake or higher in the next 30 years.

Twitter's potential move out of its historic Market Street headquarters (which is also one of the buildings on the list) is starting to make a lot more sense.

Baking soda may help concrete absorb carbon, MIT researchers find

2023-04-11T11:54:00-04:00

New research from MIT has found that adding sodium bicarbonate, otherwise known as baking soda, to concrete mixtures may make a significant dent in the material’s carbon footprint. The findings, published recently in the journal PNAS Nexus, also suggest that the addition of sodium bicarbonate may accelerate construction times through quicker concrete setting.

The research was led by MIT professors of civil and environmental engineering Admir Masic and Franz-Josef Ulm, MIT postdoc Damian Stefaniuk, doctoral student Marcin Hajduczek, and James Weaver from Harvard University’s Wyss Institute. With concrete production accounting for approximately 8 percent of global carbon dioxide emissions, and concrete being the world’s second most consumed material after water, the team sees innovation in the material’s environmental performance as being a key component to reducing global greenhouse gas emissions.

Green construction startup Nexii achieves zero-waste certification with Squamish Manufacturing Plant

2023-03-31T13:21:00-04:00

Nexii Building Solutions Inc. has become the first construction manufacturing company in North America to achieve the Total Resource Use and Efficiency (TRUE) Gold Certification for Zero Waste for its Squamish Manufacturing Plant in British Columbia, Canada.

Administered by Green Business Certification Inc., the TRUE Certification for Zero Waste evaluates a company’s waste reduction efforts, including the use of extensive recycling and composting programs, materials used, and the diversion of waste from landfills.

Previously on Archinect: Startup raises $155 million to become ‘rising star’ in prefabricated construction

As stated in a press release, Nexii was able to significantly reduce waste produced by its plant by diverting over 90 percent of waste from landfills. The company also reached this milestone by developing business and education resources for all of its staff and creating a zero-waste purchasing policy.

"We're extremely proud to have achieved the Zero Waste certificat...