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“Bouncing” winds damaged Houston skyscrapers in 2024

On May 16, 2024, a powerful derecho swept through Houston, killing seven people and causing significant damage to several of the city's towering skyscrapers. Those buildings were constructed to withstand much stronger hurricane-force winds up to 67 meters per second, as one would get with a Category 4 hurricane. The derecho's winds peaked at 40 meters per second, well below that threshold. And when Hurricane Beryl hit Houston that July with roughly comparable wind speeds of 36 meters per second, the damage wasn't nearly so severe. Why would that be the case?

Engineers at Florida International University (FIU) in Miami think they've found the answer, according to a new paper published in the journal Frontiers in Built Environment. "We show that a type of highly localized strong winds called ‘downbursts,’ which were generated during the May derecho, can significantly impact tall buildings and facades due to their unique characteristics in comparison to hurricanes,” said co-author Amal Elawady. This is particularly the case for skyscrapers that are close together, creating a "wind-channeling" interference effect that increases pressure on walls and windows.

One might assume that hurricanes and derechos are similar in that they both produce markedly intense winds, but the origin and characteristics of those winds are very different, per the authors. Hurricanes are vast tropical storms that form over warm ocean waters and affect large areas, usually lasting for several days, accompanied by heavy rains, storm surges, waves, and yes, high winds. By contrast, derechos and downbursts are much more localized convective systems, producing hurricane-force winds but over a much smaller area and shorter period of time.

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© National Weather Service/Public Domain

Google’s X spins out Heritable Agriculture, a startup using AI to improve crop yield

Google’s X “moonshot factory” this week announced its latest graduate. Heritable Agriculture is a data- and machine learning-driven startup aiming to improve how crops are grown.  As the firm noted in an announcement post published Tuesday, plants are incredibly efficient and impressive systems. “Plants are solar powered, carbon negative, self-assembling machines that feed on sunlight […]

© 2024 TechCrunch. All rights reserved. For personal use only.

Ex-Autodesk execs snag $46M to build the next gen of architecture design

Talk to many architects, and they’ll likely tell you that Autodesk’s software, including AutoCAD and Revit, has been indispensable to their work for decades. But despite their widespread use, Autodesk’s former co-CEO and chief product officer Amar Hanspal says that the architecture, engineering, and construction (AEC) industry is using 20th century tools to design 21st […]

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The tumultuous history of America's pioneering all-metal house, which neighbors wanted to tear down and architects fought to save

A restored Aluminaire House sits comfortably on grassy path of cleared forest.
Schwarting's architecture students received credit for helping bring the Aluminaire House back to life.

Jon Michael Schwarting and Frances Campani

  • The Aluminaire House was designed in 1931 as a vision for affordable housing in the US.
  • Since then, it has been moved from NYC to the suburbs, then abandoned, restored, and moved back into the city.
  • In 2017, it was shipped to Palm Springs, where it has been rebuilt again and is open to visitors.

The typical American will move 11 times in their life, the US Census Bureau says, but there is no similar estimate for the typical American house.

A leading candidate for most-moved home might be the Aluminaire House, which was designed in the 1930s as a vision of affordable housing in the Depression-era US.

Its boxy design, made up of interchangeable aluminum and steel parts, foreshadowed the rise of pre-fabricated homes and ADUs, which have been tapped in the present day to solve the country's modern housing affordability crisis.

The 1,200-square-foot cube was built on six columns and contains five separate rooms that can be arranged as different living spaces.

Over the past century, the Aluminaire House has been taken apart, rebuilt, restored, and moved multiple times as architecture enthusiasts preserve its place in American history.

"The Aluminaire House," a book published in November by Jon Michael Schwarting and Frances Campani, details the long, winding journey of the iconic structure through a New York City showroom, a grassy hill in Huntington, New York, a playground in Sunnyside, Queens, the inside of a tractor-trailer, and, finally, a permanent site in Palm Springs, California.

Take a look at the house's cross-country odyssey:

Designed in 1931 by architects A. Lawrence Kocher and Albert Frey, the Aluminaire House was imagined as a vision of affordable housing for the US.
A sketch of the Aluminaire House done in red, blue, and black pen
An early sketch of the Aluminaire House by architect Albert Frey.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

It was not an obvious duo. Kocher was the respected editor of the Architectural Record, a monthly magazine. Frey was a young, unproven architect from Switzerland.

The pair was inspired to create a house that used "standardized parts" and could be mass-produced.
A 1931 model of the Aluminaire House
The model of the Aluminaire House that was used to pitch manufacturers.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

The two architects wanted to challenge conventional ideas about how a house should look. The house was designed to be built out of aluminum panels.

A model of the house debuted at a 1931 exhibition hosted by the Architectural League of New York City. It was the star of the show.
Three women and a man dressed in 1930's professional outfits look over drawings at a metal table.
Aluminaire House designer Frey sits at a table inside the 1931 model.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

The model of the three-story house was relatively small, only 22 and a half feet wide.

Newspapers called it "the magic house of today," and were awe-struck at the "changeable rooms with moveable partitions." The New York Times was impressed that the house could be "rapidly constructed."
A magazine cover with a cartoon map of the Aluminaire House and a title saying, 'The Future.'
A cover from a magazine following the exhibition.

Logan U. Reaves, "Cut-Away Representation of the Home of the Future," Popular Mechanics, September 1932

One writer predicted that people would soon be able to "order more rooms by telephone" when their place was feeling too cramped.

New York architect Wallace Harrison loved the Aluminaire House so much that he paid $1,000 and shipped it to a plot of land he had recently purchased in Huntington, New York.
A black-and-white photograph of the Aluminaire House assembled in the Long Island woods
Harrison fell in love with the home when he saw it in New York City.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

Harrison was involved with many iconic New York City projects, including Rockefeller Center, the United Nations Headquarters, and the Metropolitan Opera.

News reports from the time say he wanted the Aluminaire House built as quickly as possible because his wife wanted more space after having a baby.

At some point, Harrison lost interest in his prized possession. The Aluminaire House, once a shining star of the architectural world, fell into disrepair throughout the 1970s and 1980s.
Dilapidated interiors with a hole in the ceiling and graffitti on the walls
Graffiti lined the house's walls over the years it was abandoned.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

Harrison moved the house once during the time he owned it, in the 1940s, to further down the hill it was already sitting on. It's not known when he abandoned it altogether, though he would sometimes let friends stay there.

A plastic surgeon bought Harrison's regular house in 1984 and was granted a demolition permit for the Aluminaire House.
The Aluminaire House under construction with a new wooden staircase
Inside the Aluminaire House during its remodeling.

Special Collections, John D. Rockefeller Jr. Library, The Colonial Williamsburg Foundation, Williamsburg, VA

Even though it had fallen into disrepair, multiple groups of architects and enthusiasts still visited the home for its significance.

Professor Jon Michael Schwarting helped win a state grant to repair the historic home. Over 11 years, he and his architecture students returned the home to its former glory.
A restored Aluminaire House sits comfortably on grassy path of cleared forest.
Schwarting's architecture students received credit for helping bring the Aluminaire House back to life.

Jon Michael Schwarting and Frances Campani

Students at the Islip campus of the New York Institute of Technology would take a class with Schwarting and work each semester on the restoration of the Aluminaire House. Another professor, Frances Campani, oversaw the work on the house.

When NYIT closed its Islip campus in 2005, a new site was needed. A former playground in Sunnyside Gardens, Queens, was chosen.
The Aluminaire House sits between brick buildings in Queens
The Aluminaire House was moved to a former playground in the NYC borough of Queens in the mid-2000s.

Jon Michael Schwarting and Frances Campani

However, a group of residents opposed the Aluminaire House and said it was an eyesore.

Midcentury-modern enthusiasts suggested moving the home to Palm Springs, where Frey already had a dedicated fan base. The home was packed up and driven cross-country.
An 18-wheeler with "Aluminaire" emblazoned on the side
The tractor-trailer that held the Aluminaire House.

Jon Michael Schwarting and Frances Campani

The Aluminaire House was packed up in 2012, but didn't make the trip to California until 2017.

Now, the house has a permanent home — as an exhibit near the Palm Springs Art Museum.
A rendering of the Aluminaire House in its new Palm Springs location
A rendering showing the Aluminaire House at its current site in Palm Springs, California.

Courtesy of Palm Springs Art Museum, Renderings, Claudiu, Cengher

The project was completed in February 2024 and is now open to the public. Schwarting and Campani — the long-time stewards of the home — attended its ribbon cutting.

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A peek inside the restoration of the iconic Notre Dame cathedral

On April 15, 2019, the world watched in transfixed horror as a fire ravaged the famed Cathedral of Notre Dame in Paris, collapsing the spire and melting the lead roof. After years of painstaking restoration costing around $740 million, the cathedral reopens to the public this weekend. The December issue of National Geographic features an exclusive look inside the restored cathedral, accompanied by striking photographs by Paris-based photographer and visual artist Tomas van Houtryve.

For several hours, it seemed as if the flames would utterly destroy the 800-year-old cathedral. But after a long night of work by more than 400 Paris firefighters, the fire finally began to cool and attention began to shift to what could be salvaged and rebuilt. French President Emmanuel Macron vowed to restore Notre Dame to its former glory and set a five-year deadline. The COVID-19 pandemic caused some delays, but France nearly met that deadline regardless.

Those reconstruction efforts were helped by the fact that, a few years before the fire, scientist Andrew Tallon had used laser scanning to create precisely detailed maps of the interior and exterior of the cathedral—an invaluable aid as Paris rebuilds this landmark structure. French acousticians had also made detailed measurements of Notre Dame's "soundscape" that were instrumental in helping architects factor acoustics into their reconstruction plans. The resulting model even enabled Brian FG Katz, research director of the National Center for Scientific Research (CNRS) at Sorbonne University, to create a virtual reality version of Notre Dame with all the acoustical parameters in place.

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© Tomas van Houtryve for National Geographic

Hurricane season is over, but the rise of storm-resistant homes in Florida is just getting started

An aerial view of homes with solar panels on them next to a river.
The developer of Hunters Point — a community near Tampa Bay — has taken extra steps to protect its homes from hurricane-force flooding and winds.

Courtesy of Hunters Point

  • Some Florida real-estate developers are building what they call hurricane-resistant communities.
  • Techniques used include tying homes down with steel straps and reducing flooding with "smart lakes."
  • While no home can be hurricane-proof, these strategies can minimize potential damage, experts said.

Hurricane Milton was barreling toward William Fulford's front door. The mayor of nearby Tampa, Florida, was pleading on television for area residents to leave or die. Still, Fulford, a 76-year-old retired homebuilder, was staying put.

"A lot of people would say I'm crazy," Fulford told Business Insider by phone on October 8, as the storm gained strength in the Gulf of Mexico. "But my house is great."

In 2022, Fulford bought a $1.25 million home in Hunters Point, a community in Cortez, Florida, where properties are raised 16 feet above the ground and tied together with steel straps. Fulford, whose home suffered minimal damage from Hurricane Milton, told Business Insider he believes his home is "hurricane-proof."

More than a few developers are betting on Florida's future by building hurricane-resistant communities like Fulford's. Hurricane season officially ends on November 30, but the movement toward resilient homes has increased as the climate crisis drives fiercer storms.

Uniform three-storey homes viewed from the front gate.
A home in Hunters Point similar to Fulford's.

Courtesy of Hunters Point

The prospect appeals to Florida homeowners grappling with stress and uncertainty as home insurance premiums and homeowners' association, or HOA, fees rise and the risk of severe storm damage mounts. After Hurricanes Helene and Milton in September and October, respectively, the state suffered an estimated $21 to $34 billion in damages to commercial and residential properties, including uninsured properties, according to real-estate analytics site Corelogic.

About two hours southeast of Hunters Point is a development called Babcock Ranch, which bills itself as "The Hometown of Tomorrow." Its builders made efforts to protect its 4,000 homes on about 17,000 acres from storms, including moving utilities underground and avoiding paths of natural water runoff.

A rep said that in the days before Hurricane Milton, Babcock Ranch saw a 390% increase in daily visits to its website. Hunters Point's developer said that two new homes have sold since last month's storm.

Aerial view of Babcock Ranch development
Babcock Ranch is a new residential development near Punta Gorda, Florida.

Courtesy of Babcock Ranch

Three building experts told Business Insider that no home can be hurricane-proof. However, Leslie Chapman-Henderson, the president and CEO of the Federal Alliance for Safe Homes, said that Hunters Point and Babcock Ranch are good examples of what hurricane resiliency can look like.

Building entire resilient communities — instead of one home with beefed-up protections on a block with regular homes — can protect neighborhoods and property values against Florida's unsettled future, she added.

"Our wish is to see all developers do this because they're on the leading edge," Chapman-Henderson said.

Hunters Point homes are high off the ground and air-tight

The exterior of three Hunters Point homes, with two-story balconies and pools.
Living spaces begin on the second floor of the homes in Hunters Point.

Courtesy of Hunters Point

Hunters Point is in Florida's last working fishing village an hour south of Tampa.

The resiliency of its homes begins with their height. Located on a peninsula jutting out into Sarasota Bay, the development is just feet away from the coastline and vulnerable to storm surges like those seen during Hurricanes Helene and Milton, which reached almost seven feet.

To counteract that risk, Hunters Point homes — which were developed and tested in a warehouse for 18 months — are built so that the bottom floor is a garage and storage, the middle floor is the home's first floor, and another level above has bedrooms — all connected by an elevator.

"You don't step into the house until you're 16 feet above the flood zone," developer Marshall Gobuty told Business Insider.

Currently, 31 of the 86 planned units at Hunter's Point have been built, with homes ranging in price from $1.45 million for nearly 1,700 square feet to $1.69 million for over 3,400 square feet.

Aerial shot of a row of Hunters Point homes right on the water
Hunters Point homes are built with metal straps throughout the structures.

Courtesy of Hunters Point

Another feature of the homes is an extra-fortified base, in which the slab and foundation are poured together as one piece. The homes' walls are built with 2x6 beams instead of 2x4 beams to increase resiliency and allow for more insulation. The sides of the walls, the ceilings, and the roof are then filled in with closed foam to make the home airtight.

Every level is reinforced with metal straps all the way down to the foundation to hold the home together.

These connections — roof to walls, walls to each other, and walls to foundation — are fundamental to building a house that can withstand hurricane-force winds.

Chapman-Henderson said the real innovations built into these homes are the fortifications against the wind: the walls bolted into the foundation and the sturdier wood in the frames.

Any vulnerability in those structural connections could doom the whole house. When that happens, "usually roofs blow off first because they're not connected well to the walls, and then the walls don't have any lateral support, and they go, and you've lost the whole building," Mike O'Reilly, a licensed engineer and construction instructor at Colorado State University, told BI.

In Hunters Point homes, though, "everything is connected. There are no seams," Gobuty told BI. "Every house is built like a Yeti cooler."

Babcock Ranch uses "smart ponds" to manage flooding

Babcock Ranch in Punta Gorda, Florida, is built on land 30 feet above sea level, far from the coast.

So far, 3,752 homes have been built out of a planned 19,500 units. The development functions like a city, with an elementary school, a middle school, a high school, a shopping district, a recreation lodge, and dozens of hiking trails. Homes on the market range from a two-bedroom condo for $255,000 to a four-bedroom single-family home with its own pool for $1.695 million.

Aerial view of Babcock Ranch home development in Florida with single-family homes clustered around a lake
Babcock Ranch in Florida currently has about 3,750 homes completed out of a planned total of 19,500.

Courtesy of Babcock Ranch

When developer Syd Kitson purchased the land in 2006, his team spent hours poring over maps dating back to the 1940s to find the property's natural flowways, which are how excess water naturally runs out of the area during flooding.

The team intentionally sacrificed building thousands of units to leave that land untouched.

"That's part of working with Mother Nature, rather than working against Mother Nature," Kitson told BI.

Babcock Ranch also has "smart lakes," or man-made bodies of water throughout the development. These lakes have solar-powered pumps with predictive analytics that raise and lower the lake's height when a storm nears. If the area expects major flooding, the smart lakes will lower to prepare for the increased rainfall.

"Our philosophy is to do everything in our power to be as resilient as we possibly can," Kitson said.

Babcock Ranch welcomed its first residents in 2018. It faced its first major test in 2021 when the eye of Category 4 storm Hurricane Ian brought 150 mph wind gusts to the development. The property only sustained minimal damage, including fallen trees and a few broken solar panels, Kitson said.

Aerial view of Babcock Ranch with the town's signature lightouse in the distance
Babcock Ranch put all of the community's utilities underground to increase storm resiliency.

Courtesy of Babcock Ranch

Downed power lines and dayslong blackouts often affect large swaths of the state following major hurricanes. Babcock Ranch placed all utilities, including water, electricity, and wastewater, underground to prevent that.

"You won't see a single utility pole in Babcock Ranch," Kitson said.

The submerged power poles are built in concrete tubes designed to withstand 165 mph wind gusts.

Chapman-Henderson, of the nonprofit that advocates for safe homes, called the smart lakes and buried utilities "innovative" and added that recent storms have proven these strategies are effective.

Babcock Ranch is so well regarded for its safety during a storm that the elementary school's fieldhouse serves as a state- and county-designated evacuation center. Built to withstand 150 mph wind gusts, the fieldhouse provided shelter for 1,300 Floridians during Hurricane Milton.

"We're not a place where you evacuate. We're a place where people being ordered to evacuate come," Kitson said.

Hurricane resistance is the future of Florida homebuilding

Hunter's Point and Babcock Ranch are part of a growing movement for more resilient homes.

Chapman-Henderson warned, however, that residents shouldn't let their home's sturdiness make them complacent. They should still evacuate if authorities call for it.

Aerial view of a lake in the middle of Babcock Ranch at sunset.
Babcock Ranch is an evacuation area for surrounding residents in the event of a major storm.

Courtesy of Babcock Ranch

"We can build to withstand these events, but we should never say it's absolute without fail," she said.

Calling a house 100% hurricane-proof is "like calling the Titanic unsinkable," O'Reilly said.

Though there isn't a single national standard for hurricane-resistant buildings, Fortified — a program run by the Insurance Institute for Business & Home Safety, an industry-backed research group — evaluates one of the most critical structures for a home's resiliency: its roof. Fortified grants certifications to homeowners who strengthen their roofs through different methods, such as using grooved, ring-shank nails instead of traditionally smooth ones.

More homeowners are requesting to have their roofs certified as stronger-than-average, Fred Malik, managing director of Fortified, told BI. Fortified certifications have risen from less than 1,000 in 2016 to nearly 12,000 last year, bringing the grand total to nearly 70,000 over the program's lifetime, Malik added. The program anticipates adding another 17,000 by the end of this year.

Though Hunters Point and Babcock Ranch have not yet participated in Fortified, Malik said the measures their builders are taking seem effective.

"I get really nervous when anybody refers to anything as something 'proof,'" Malik told BI. "But they are making some really good decisions."

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