Three-sixty-degree photography on construction sites is sort of like Google Street View at a smaller scale—a worker walks through a job site with a monopod or sometimes even with a helmet-mounted set of cameras and captures the sights and sounds at all angles. And the technology has become a boon for Skanska, especially for projects like the Moynihan Train Hall and LaGuardia Terminal B in New York. “The resolution is just phenomenal,” said Tony Colonna, senior vice president of innovative construction solutions at Skanska of the new photography techniques, which increasingly can be done with off-the-shelf consumer products. “You can basically take anyone on a walkthrough without being at the site.” The 360-degree video is almost like being there, he reports. “You're in complete control. You can stop, look around, look up, look down. So you're not limited let's say with traditional photographs or traditional video to just see maybe where the camera was pointing. With the 360 you have complete flexibility.” It’s helped teams collaborate more fluidly and accurately across cities. “We might run into some sort of challenge on a site, and hey, you know what, the expert's at the other side of the country,” Colonna explained. “You can bring them onto the site. We give them this kind of experience and have that engagement to help solve a problem.” “These photographs are game-changing," said Albert Zulps, regional director, virtual design, and construction at Skanska. “You capture that space and then later you can actually look at versions of those photographs, go back in time, peel back the sheetrock and go into the wall.” Three-sixty-degree photography can also offer a tremendous time savings and improve worksite safety, he said. The photos integrate well with other tech, including software like StructionSite and HoloBuilder as well as mobile apps that allow people to locate themselves within a floor plan while taking a 360-degree photograph. In addition, it plays well with other emerging technologies Skanska is using, including models generated from 3D laser scans, VR headsets, and tech for making mixed reality environments. “What we've started to do is take that footage, and take those pictures, and you overlay them with the model,” said Colonna. “If you really want to think about how everything ties together, it is all about collaboration,” Colonna said. “When you look at the construction industry, you're trying to effectively manage a lot of different entities, from the design team, to the owner, to the builder, to all the contractors. What Skanska is doing as a construction manager is finding new ways to collaborate with all those teams. It's really about, how do we use more visual technology to help us work better together?”
Posts tagged with "3D Scanning":
The Swedish multinational construction and development company Skanska is responsible for many of the world’s biggest building projects. Right now in New York City alone, it is overseeing two massive infrastructural and architectural undertakings: The Moynihan Train Hall and the LaGuardia Terminal B redevelopment. The design and construction of these projects are being reshaped by the latest technology, particularly when it comes to “reality capture”—laser scanning, drones, 360 photography, virtual reality, and other technologies that are all becoming powerful, scalable, affordable, and interoperable. AN and Tech+ Expo spoke with Skanska’s Tony Colonna, Senior Vice President of Innovative Construction Solutions and Albert Zulps, Regional Director, Virtual Design and Construction to get their insight into how technology is shaping projects today. Skanska's 3D laser scanning has been especially useful on projects like the Moynihan Train Hall where there is existing construction. “At Moynihan, we went down into the catacombs, into the tunnels below, the train tracks below,” explained Zulps. “Getting access through Amtrak is limited to weekends, after hours, late at night. To bring all the subcontractors and people that have an interest will be putting systems in there eventually, it is pretty difficult.” Instead of trying to cram everyone underground at inconvenient hours and to mitigate problems of limited access, Skanska 3D scanned the entire job site and shared between subcontractors, architects, engineers, and others the resulting 3D model that could be imported into software like Revit and Navisworks. This interoperability and ease of use, along with significantly reduced cost, have turned laser scanning from a pricey gimmick into an almost necessary tool. “There's a right time and place for technology, and both Moynihan and La Guardia are benefited by that,” said Zulps. “These subcontractors—if they didn't have a scan, they would have to go down individually on their own to these different spaces, take measurements, make their own assumptions,” he said. “This gives them that information, and it gives it to them on day one. There's no one or two weeks of doing pipe measurements and drawings to figure out what you're doing. And that actually allows you to compress the schedule a bit.” Laser scanning existing structures helps the design and construction teams evaluate inaccuracies in historic plans, as well as account for any shifts that might have happened in the intervening years. In the case of Moynihan Train Hall, Colonna said: “We were going gut it, bring it down to its bones, and then refit out. The plans that the architects were using were not actually what was there. So once we stripped it down, we went in and we did a three-dimensional laser scan, we put that into a model, and then when you overlay that with models that the architects had, you could see the differences in some of the structures. Some of the columns weren't where they thought they were.” “There's a lot of trusses and beams and complex girders that are built 100 years ago, and they are very complex,” Zulps explained. “I don't know where the original drawings came from how the architects originally formulated their assumptions-but some of the assumptions are wrong.” Sometimes there are pleasant surprises—beams that would’ve gotten in the way but were never built, but at other times laser scanning can help unveil structural issues early on so that architects and structural engineers can collaboratively adapt beforehand, rather than after an unfortunate discovery during the building process. They can also mark “hotspots” on the 3D models, Colonna said, allowing everyone to notice slight differences like tilts on historic walls. "What I think is exciting is when technologies overlap,” said Zulps of all the new reality capture technology Skanska’s been using. The scans can also be combined with other technology, like 360 photographs, to create hyper-realistic walkthroughs. “Just a few people go down into the train platform with a laser scanner, capture all those conditions, and then share that point cloud and those 360 photos that it takes with all the subcontractors, architects, engineers, all people to test against their assumptions and also use for their background,” explained Zulps. “We're giving them a virtual walkthrough. We're giving them the laser scan to walk through and query dimensions. It saves having to get out a lighter, it saves having to book for the time with Amtrak to get down there or the Port Authority. On a project like a renovation when you have to go through an operating train station, laser scanning is just amazing.” Zulps went on: “We're making sure the models are available to people in the field. When people ultimately put the buildings together, you have to understand what they're doing and have clear instructions, and we want to leverage the models we use during coordination. We're delivering those models on iPads to the subcontractors and our supers.” Now instead of everyone having their own in-house models or drawings, everyone working on a project can coordinate on a model and real time. “Getting that information out into the field is a small thing, but it makes a big difference.” Though primarily used on retrofits and renovations, laser scanning has also come in handy on new construction, such as the project at LaGuardia. One use is quality control, said Albert. “You do the laser scan to make sure that before you go too far that the foundation is in the right place, for instance. And there have been times on projects where a surveyor might've made a mistake or there's translation error or things were changed and they weren't caught. So before you go too far down that path, it's good to catch those errors.” It can also be a good way to prepare for future steps in the construction process. “We had a central utility plant with a bridge going from a concourse to a head house, and we needed temporarily to put caps on top or pour concrete on top of where those columns were, knowing that in the future, we'd have to open the concrete up and then tie the steel in when that bridge was built,” recalled Zulps. They built laser scanning into their construction process so that “later when the surveyor said, ‘What are we gonna do? We have to break the concrete before we know where to put the new steel.’ One hundred percent, we were like, ‘Don't worry about it. We did a laser scan.’” The possibilities are still being explored. “We've also used the technology even just for maintenance after the buildings are done,” said Colonna. “There are just a tremendous amount of opportunities.” For more on the latest in AEC technology and for information about the upcoming TECH+ conference, visit techplusexpo.com/nyc/.
The process of drawing up architectural plans is in flux. For more than a decade, assorted software programs have attempted to bridge the gap between two and three dimensions by taking flat drawings or field data collected onsite and migrating them into modeling platforms, which create photorealistic renderings or 3-D virtual reality walkthroughs of a project. But what if the process began with what exists in three-dimensional time and space instead? That’s a question 3-D media company Matterport has answered by creating what it calls True3DTM imaging of real-world environments using its proprietary platform, which includes its Pro2 3D camera and cloud-based services. “What’s really happening in the industry is this shift and transition that’s been happening for a number of years from 2D to 3D,” noted Matterport’s Director of AEC, John Chwalibog. “That’s where everything has been going and continues to go with some of the augmented reality and virtual reality type technologies. It’s kind of taken 3D to another level of ‘actual 3D,’ or what we at Matterport call ‘True3D,’” he said. “So, instead of having rendered models of the design process, especially with existing spaces, why not start with the actual model of the space and use that as the backdrop to really drive and start that design process?”
How It WorksWhat makes the Matterport platform unique is its simplicity and efficiency. Scanning a room in 3-D previously required trained technicians and complicated software that took countless hours to capture and process. Matterport has simplified the experience by creating its Capture app for iPad that allows users to operate its 3-D camera with the push of a single button, which takes just 20 to 30 seconds per scan (total time to document an entire building depends on the size). Once the space has been captured, users can upload the data to Matterport, which processes and hosts the files for sharing within a matter of hours, Chwalibog says. The Pro2 camera generates high-quality 4K, 2-D photography in addition to state-of-the-art 3-D and VR walkthroughs and floorplans all from one device. The software and cloud services work together to capture and automatically weave together thousands of digital 3-D images into an accurate, immersive photorealistic model that can be shared, annotated, and exported to a variety of tools such as Autodesk ReCap or Revit, improving efficiency and collaboration on the front-end of the project. Additionally, Matterport adds value to the entire building lifecycle, including construction documentation and maintenance. Chwalibog notes that on the job site, project team members use the technology to record milestones, such as when structural steel, foundation work, rough walls, plumbing, mechanical, electrical, or plumbing are in place. “What you end up with is a series of three-dimensional models of particular moments in time during that construction process, so it meets the needs of construction documentation to actually document what was built,” he said. “I can identify any changes from what was actually built versus the design intent, so now I can proactively make some decisions about how that’s going to impact the next milestone.” Likewise, Chwalibog says the three-dimensional record of the project gives property owners much better intelligence about existing conditions which can prove invaluable years later if or when a renovation takes place.
Florida International University to be the first arts and design college to launch a Makerbot Innovation Lab
With 3D printing becoming a major impetus in cultivating startup culture, Florida International University (FIU) is launching a MakerBot Innovation Lab, a 3,000-square-foot makerspace for students and community members to develop product ideas and conduct research. Set to be equipped with 30 state-of-the-art 3D printers and four 3D scanners, the space can serve up to 60 students at a time, with one 3D printer between every two work stations. The school bagged a $185,000 grant from the John S. and James L. Knight Foundation to build the facility. “Miami’s entrepreneurial ecosystem has seen enormous growth over the last few years—adding co-working spaces, mentor and funder networks, educational offerings and a host of events,” Matt Haggman, program director of the Knight Foundation, said in a statement. “But there are few established makerspaces where entrepreneurs can experiment and build. The MakerBot Innovation Lab will help to fill this gap, providing the next generation of Miami talent with a space to realize their ideas and inviting the community to connect toward building a stronger startup culture in our city.” FIU’s College of Architecture + The Arts will be the only arts/design college in the nation to house a MakerBot Innovation Lab, according to John Stuart, associate dean for cultural and community engagement and executive director of Miami Beach Urban Studios. The lab’s launch creates abundant educational opportunities as well as a space for public programs. The makerspace will support workshops for elementary and middle school students, dual enrollment programs for high school students, for-credit classes for FIU students and startup programs for recent graduates. FIU’s Urban Studios, a creative space for the performing and fine arts, will work with FIU colleagues and students in hospitality, medicine, and other disciplines to conceive projects to fulfill a community need, such as outfitting homes to be safer for the disabled. The school will also collaborate with Miami Beach–based Rokk3r Labs, a company "co-builder," to hold workshops, seminars and other programming within the Makerbot Innovation Lab.
Beneath this 200 year old monument to George Washington, a time capsule filled with 3D printed scans will send messages to the future
What do you put in a 21st century time capsule inside the cornerstone of a 19th century landmark that’s undergoing restoration? If the landmark is the nation’s first monument to George Washington, you put in a 3D printed likeness of the first president, hot off the 3D printer, of course. That’s the idea behind the four shiny objects that will be sealed within an 1815-era cornerstone and placed below the base of the Washington Monument in Baltimore, Maryland, home of the aforementioned first monument to Washington. The city-owned monument, designed by Robert Mills as a centerpiece for Mount Vernon Place, is undergoing a $5.5 million restoration that’s nearing completion. Planners say this is one of the first instances, to their knowledge, of 3D-printed objects being placed in the cornerstone of a restored monument for future generations to discover—and the objects actually mirror elements of the monument itself. “It’s a twist on history,” said Lance Humphries, an architectural historian who serves as chairman of the monument restoration committee of the Mount Vernon Place Conservancy, a nonprofit group that’s working with the city to restore Baltimore’s Washington Monument and improve the public squares around it. “We like the idea of using this 3D technology as a way of leaving a record for the future… It’s incredible technology.” The restoration work will be complete and the monument will reopen to the public on July 4, 2015, exactly 200 years after the cornerstone was laid to signal the start of construction. It has been closed for repairs since 2010. The four objects, displayed publicly for the first time during a media event Sunday, April 12, include a mini bust of Washington, a mini statue, a mask-like reproduction of the face on Washington’s statue, and a life sized replica of one of his hands, holding a scroll. All four objects were made with 3D scanning and printing technology by Maryland based companies whose principals specialize in the process and wanted to apply it to historic preservation. Noting that time capsules and cornerstones often contain newspapers from the day they were sealed, Humphries said 3D printing is essentially a 21st century way to impart information that was previously conveyed in print form. He said the conservancy’s goal, in placing miniature replicas depicting pieces of the statue inside the cornerstone, was to leave behind information that could tell future preservationists about the statue’s condition after 200 years. “These 3D images will show the future the condition of the statue in 2015,” he explained. “We don’t know when they will be found, but when they are, they will help future generations understand how the statue appeared during the monument’s bicentennial year.” Unlike Robert Mills’ Washington Monument in the nation’s Capitol, which is a marble clad obelisk, Baltimore’s 178-foot-tall monument is a classical Doric column atop a stone base, with a larger-than-life statue of Washington at the top. The standing figure, by Italian sculptor Enrico Causici, depicts Washington resigning his commission as Commander in Chief of the Continental Army in 1783. For years, visitors could climb to the top of the Baltimore monument and enjoy unobstructed views in all directions. But the monument was closed to the public after Humphries, from an outdoor café a block away, noticed imperfections in the stonework near the top of the monument and reported what he saw to city officials. That triggered a chain of events that led to the current repair effort. During the restoration, workers discovered the 1815 cornerstone, with contents from that year, and a second time capsule from 1915. The 1915 time capsule has not been opened but will be soon. The 1815 cornerstone was opened in February. Its contents included newspapers from 1815, glass jars, coins, and a likeness of Washington. As part of activities leading up to the 200th anniversary of the cornerstone laying in July, conservancy members wanted to re-bury the 1815 cornerstone, again with objects that might send a message to future generations. Museum conservators recommended that they not re-bury the fragile artifacts from 1815, to ensure their preservation. That’s when Humphries came up with the idea of turning the 1815 cornerstone into a time capsule containing miniature versions of parts of the Washington statue, made with 3D printing technology. Humphries said he thought it would make sense to include another likeness of Washington, since the cornerstone originally had one, and he thought it would be reflective of the changing times to have the 2015 likeness made with 3D printing. In the early 1800s, he said, “printing was about reading. Now it’s about making something in three dimensions, which is a big change over 200 years.” Humphries said he doesn’t know if any other time capsules or cornerstones have been sealed containing 3D-printed objects, but he isn’t aware of any and hopes this is one of the first cases. He said he thought it would be a good way to give people in the future an idea of the technology available to Americans in 2015. “I’m sure in 3015, they are going to say, ‘That was a really primitive thing they used,’ but that is what we use today. “ While scaffolding was still up around the monument, Washington’s statue was documented with 3D scanning technology by Direct Dimensions of Owings Mills, Maryland. A digital scan was taken to create a record of the statue’s condition in 2015. The same scan was used to print the miniature 3D images of the statue that are going in the cornerstone. The four objects were printed in nylon by NextLine Manufacturing of Gaithersburg, Maryland. Then, to ensure that they would last, the 3D models were electroplated for durability, first in copper and then in nickel, by a Halethorpe company called RePliForm. Although the coatings give the objects a metallic appearance, the figures are relatively light, as if they were made with plastic. Michael Raphael, the founder and chief executive officer of Direct Dimensions, said Baltimore’s collection of objects may be the first of its kind, “a set of miniature replicas of an historical monument enshrined back into the cornerstone for future generations to see.” Raphael said 3D scanning can be a valuable tool in preserving statues and other works of art that are kept outdoors. “We strongly believe that cultural artifacts, especially those exposed to the elements... are among the most important treasures requiring 3-D digital documentation,” he said. “Three dimensional scanning provides a fast, accurate means for permanent documentation and future restoration of cultural artifacts under constant risk of destruction by weather, pollution, or other disasters.” One of the four objects, the hand, is hollow in the middle and will contain a handwritten letter, like a message in a bottle. The letter, written in English, will describe the restoration project and the statue’s condition at the 200-year mark. Whoever finds the four objects, Humphries said, will be able to compare the condition of the statue in 2015 and the condition whenever they next open the cornerstone, showing how much the statue has eroded or otherwise changed over time. In that sense, he said, the 3D images will provide useful information to conservationists of the future. This week, the 1815 cornerstone is scheduled to be placed back in its original underground position with the new objects inside, so work can continue on the restoration. Humphries said the cornerstone might be reopened in 100 years or 1,000 years. “It’s just when the next guy finds it and wants to dig it up again. It was a lot of work.” Humphries added that conservators advised his group not to include newspapers this time because most newspapers printed today are “so acidic” that they might damage other objects stored with them. The monument will reopen during a daylong “Monumental Bicentennial Celebration” that will include a Naturalization Ceremony, a formal ribbon cutting, and a “family friendly” fair. Admission is free. As exhibited Sunday, the mini-statue of Washington is reminiscent of similarly sized replicas of the Statue of Liberty that are sold to tourists in New York City. Conservancy representatives say their organization may eventually fabricate and sell copies of the cornerstone objects as souvenirs, to raise funds for additional phases of restoration work around Mount Vernon Place.
Developers use cutting-edge technology to restore Ralph Walker crown.When JDS Development Group and Property Markets Group purchased the 1927 Ralph Walker high-rise in Manhattan’s Hell's Kitchen neighborhood in order to transform it into the Stella Tower condominiums, they realized that something was not quite right about the roofline. "The building had a very odd, plain parapet of mismatched brick," recalled JDS founder Michael Stern. "We were curious about why it had this funny detail that didn't belong to the building." The developers tracked down old photographs of the property and were pleasantly surprised by what they saw: an intricate Art Deco thin dome crown. "We were very intrigued by putting the glory back on top of the building," said Stern. They proceeded to do just that, deploying a combination of archival research and modern-day technology to recreate a remarkable early-twentieth-century ornament. The developers, who had previously worked together on 111 West 57th Street and Walker Tower, another Ralph Walker renovation, began with what Stern calls "archeology" or "surgical demolition" of the crown area. The excavation revealed that the entire base of the crown remained behind the bricks added by Verizon, the building's previous owner. They also tracked down original drawings of the building, which showed the shape of the crown and some of its dimensions. "We didn't have shop drawings—we didn't have a road map," said Stern. "My team had to basically reverse engineer the crown using the drawings as a guide." They also leaned on 3D scans of the base to fill in the missing dimensions, and constructed a 3D model of the crown in SolidWorks. The SolidWorks model helped the developers answer important questions, like how many new pieces should be cast, how they would be installed, and what support would be required. JDS Construction, who led the reconstruction effort working with CetraRuddy architects, called on Corinthian Cast Stone to fabricate the new pieces. Corinthian cast a total of 48 pieces for the upper half of the crown in colored concrete. To support the new work, JDS designed a complex steel structure for the inside of the crown. They assembled the entire structure offsite before disassembling it and lifting it to the top of Stella Tower using a custom pulley and lever system. Eight craftsmen installed the precast pieces one at a time over the course of approximately five weeks. Each precast piece was clipped to the steel structure, then mortared to its mates. The design and fabrication process, which began with the decision three years ago to reproduce the crown, culminated this September. "The crown is so spectacular," said Stern. "It's better than the invention of the wheel." Besides his pride in the crown in and of itself, Stern sees the Stella Tower project as a chance to restore Ralph Walker's place in the architectural canon. In addition to recreating the crown, JDS and Property Markets Group recast every piece of cast stone and replaced every window and every mismatched brick on the building's exterior. "We've fixed some of the wrongs history has done to the building," he noted. "This was a great telecom building by one of the fathers of New York architecture, but over the years his buildings have been lost in the landscape. With Walker Tower and Stella Tower, we're trying to bring attention back to his legacy."
Boston Valley Terra Cotta restored the Alberta Legislature Building's century-old dome using a combination of digital and traditional techniques.Restoring a century-old terra cotta dome without blueprints would be a painstaking process in any conditions. Add long snowy winters and an aggressive freeze/thaw cycle, and things start to get really interesting. For their reconstruction of the Alberta Legislature Building dome, the craftsmen at Boston Valley Terra Cotta had a lot to think about, from developing a formula for a clay that would stand up to Edmonton’s swings in temperatures, to organizing just-in-time delivery of 18,841 components. Their answer? Technology. Thanks to an ongoing partnership with Omar Khan at the University at Buffalo’s School of Architecture and Planning, the Orchard Park, New York, firm’s employees are as comfortable with computers as they are with hand tools. On site in Edmonton, technicians took a 3D laser scan of the dome prior to disassembly. They also tagged specific terra cotta pieces to send to New York as samples. These pieces, which ranged from simple blocks to gargoyles and capitals, went straight to the in-house lab for scanning into Rhino. The drafting department combined the overall scan with the individual scans to create a total picture of the dome’s surface geometry and depth. The individual scans, in addition, were critical to making the approximately 508 unique molds employed on the project. To compensate for the eight percent shrinkage clay goes through during drying and firing, the craftsmen at Boston Valley used to have to perform a series of calculations before building a mold. “[Now we] take the scan data and increase by eight percent by simply doing a mouse click,” said Boston Valley national sales manager Bill Pottle. In some cases, the craftsmen converted the scan data into a tool path for the five-axis CNC machine used to make the molds. “We’re doing that more and more in some of our mold making. It also allows us to ensure that we’re recreating them to the most exacting tolerance and dimensions that we can,” said Pottle. The data from the 3D scans also helped the craftsmen replicate the dome’s complicated curvature. “Between the scanned pieces and the scan of the dome itself, we were able to figure out some very complex geometry where each of these individual pieces had the correct shape to them,” said Pottle. For sustainability and durability, the designers at Boston Valley reconfigured the dome as a rain screen system, with terra cotta components attached to a stainless steel frame. But while the rain screen boosts environmental performance, it also demands incredible precision. Again, the 3D models proved invaluable. “The models allowed these tight tolerances. [We] could explode it and make sure everything was connected. It would have been impossible without that level of sophisticated software,” said president John Krouse. The Alberta Legislature Building dome restoration is the first major project on which Boston Valley has unleashed its full array of digital design tools. Krouse hopes its success—he estimates that the digital tools speeded fabrication by 200 percent—will send a message to designers interested in experimenting with terra cotta: “What we’re trying to say to the architecture and design community globally is don’t be afraid to start designing domes with complex geometry, because we’re equipped with all this technology. It doesn’t have to be a square box.”