Construction Executive - September 2016 - 52

SPECIAL SECTION: CONSTRUCTION TECHNOLOGY and troughs. SAM could be the beginning of restructuring the way contractors automate manual tasks when technologies like prefabrication are deemed unsuitable. CONSTRUCTION EXECUTIVE | SEPTEMBER 2016 3-D printing is one part of a much larger ecosystem of technolgies that need to work in unison to be effective. 52 3-D Printing As with automation and prefabrication, technologies that have been the traditional domain of factories are now being brought into the construction domain. Dubai is placing an enormous emphasis on 3-D printing and has set an ambitious goal that 25 percent of buildings in the country will be 3-D printed by 2030. This goal is part of a much wider strategy, including targeting the medical, product manufacturing and construction sectors. According to the Ruler of Dubai, Sheikh Mohammed bin Rashid Al Maktoum, 3-D printing in construction could be worth more than $800 million by 2025. Statements such as these from governments send a message to the engineering and construction industry that construction reform is imminent. 3-D printing is one part of a much larger ecosystem of technolgies that need to work in unison to be effective. Materials science is one of those technologies. 3-D printing has extended beyond plastics to more advanced material such as metal and concrete. In particular, work being done by Behrokh Khoshnevis in developing a system that he terms "contour crafting" is essentially a robotically controlled nozzle that "squeezes" concrete into the shape of a building. Contour crafting can create a 2,500-square-foot house in 20 hours. The applications for this process are far reaching; however, the obvious one is rapid affordable housing, helping to overcome one of the world's biggest challenges of mass urbanization. Generative Design 3-D printing allows the industry to fabricate structures and objects that couldn't be created using traditional construction technologies. The model-to-construction workflow removes the need for large-scale documentation and introduces a radical new way of thinking called generative design. Imagine a designer or engineer is tasked with designing a building project, feeding into a piece of software all of the goals that he or she has for the project, including the vision of the client, the goals for the urban design and so on. Couple that with the constraints in terms of materials limits, maximum height of the building, the allowable scale for the floor plates and the local legislative framework. Generative design will process this information using the enormous horsepower of the cloud and generate not one, not five, but potentially thousands of interations all meeting the requirements, and the designer or engineer may choose the design that best suits the needs of the project. Typically, generative designs look complex, organic and almost impossible to document, let alone construct. Airbus is currently using this technology to redesign the rear cabin partitions on the A320 aircraft. Because generative design produces the most optimal design for the object, Airbus has been able to halve the weight of the partition but maintain the structural rigidity. In aerospace, weight equals fuel, which equals cost. Any savings to be made in terms of weight will be a welcome gain for the industry. This is where 3-D printing will come into its own with the ability to form those complex shapes-something that existing construction techniques could never achieve. In Amsterdam, research and development company MX3D is realizing the fusion of generative design, robotics and 3-D printing. For several years, the team has been researching the feasibility of 3-D printing a fully functioning bridge over a canal, and it has developed a system where the construction robots will print material in midair. Additionally, extensive use of generative design has been used to design the supporting structure. The coming together of all of these technologies will set the bar for the entire industry. Brett Casson is Autodesk's digital infrastructure leader in APAC. For more information, visit autodesk.com. http://www.mx3d.com/ http://www.autodesk.com

Table of Contents for the Digital Edition of Construction Executive - September 2016

Industry Insider
In Brief
Washington Update
Construction Markets
Risk
Safety
Workforce
No Bounds to Success
Special Section: Construction Technology
Business Development
Community Outreach
Viewpoints
Construction Executive - September 2016 - Cover1
Construction Executive - September 2016 - Cover2
Construction Executive - September 2016 - 1
Construction Executive - September 2016 - 2
Construction Executive - September 2016 - 3
Construction Executive - September 2016 - 4
Construction Executive - September 2016 - 5
Construction Executive - September 2016 - Industry Insider
Construction Executive - September 2016 - 7
Construction Executive - September 2016 - In Brief
Construction Executive - September 2016 - 9
Construction Executive - September 2016 - Washington Update
Construction Executive - September 2016 - 11
Construction Executive - September 2016 - Construction Markets
Construction Executive - September 2016 - 13
Construction Executive - September 2016 - 14
Construction Executive - September 2016 - 15
Construction Executive - September 2016 - Risk
Construction Executive - September 2016 - 17
Construction Executive - September 2016 - 18
Construction Executive - September 2016 - 19
Construction Executive - September 2016 - Safety
Construction Executive - September 2016 - 21
Construction Executive - September 2016 - Workforce
Construction Executive - September 2016 - 23
Construction Executive - September 2016 - 24
Construction Executive - September 2016 - 25
Construction Executive - September 2016 - No Bounds to Success
Construction Executive - September 2016 - 27
Construction Executive - September 2016 - 28
Construction Executive - September 2016 - 29
Construction Executive - September 2016 - 30
Construction Executive - September 2016 - 31
Construction Executive - September 2016 - 32
Construction Executive - September 2016 - 33
Construction Executive - September 2016 - 34
Construction Executive - September 2016 - 35
Construction Executive - September 2016 - 36
Construction Executive - September 2016 - 37
Construction Executive - September 2016 - 38
Construction Executive - September 2016 - Special Section: Construction Technology
Construction Executive - September 2016 - 40
Construction Executive - September 2016 - 41
Construction Executive - September 2016 - 42
Construction Executive - September 2016 - 43
Construction Executive - September 2016 - 44
Construction Executive - September 2016 - 45
Construction Executive - September 2016 - 46
Construction Executive - September 2016 - 47
Construction Executive - September 2016 - 48
Construction Executive - September 2016 - 49
Construction Executive - September 2016 - 50
Construction Executive - September 2016 - 51
Construction Executive - September 2016 - 52
Construction Executive - September 2016 - 53
Construction Executive - September 2016 - 54
Construction Executive - September 2016 - 55
Construction Executive - September 2016 - 56
Construction Executive - September 2016 - 57
Construction Executive - September 2016 - 58
Construction Executive - September 2016 - 59
Construction Executive - September 2016 - 60
Construction Executive - September 2016 - 61
Construction Executive - September 2016 - 62
Construction Executive - September 2016 - 63
Construction Executive - September 2016 - 64
Construction Executive - September 2016 - 65
Construction Executive - September 2016 - 66
Construction Executive - September 2016 - 67
Construction Executive - September 2016 - Business Development
Construction Executive - September 2016 - 69
Construction Executive - September 2016 - 70
Construction Executive - September 2016 - 71
Construction Executive - September 2016 - Community Outreach
Construction Executive - September 2016 - 73
Construction Executive - September 2016 - Viewpoints
Construction Executive - September 2016 - 75
Construction Executive - September 2016 - 76
Construction Executive - September 2016 - Cover3
Construction Executive - September 2016 - Cover4
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