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Category: Civil Engineering

Deploying IPv6 in Dropbox Edge Network

IPv6 request percentage across all Dropbox services In the past few months, we have gradually enabled IPv6 for all user-facing services in Dropbox edge network. We are serving about 15% of daily user requests in IPv6 globally. In this article, we share our experiences and lessons from enabling IPv6 in the edge network. We will cover the IPv6 design in the edge, the changes we made to support IPv6, how IPv6 was tested and rolled out to users, and issues…

Drones become crime-fighting tool, but perfection is elusive

In this Oct. 16, 2017 photo, Streetsboro Officer Scott Hermon prepares to pilot the department’s first drone in Streetsboro, Ohio. Streetsboro Police became one of hundreds of agencies across the country adopting drone technology when Hermon became the first Streetsboro officer certified to fly drones in October. Streetsboro Police say they can’t afford a helicopter, but a drone provides many of the same capabilities at a fraction of the price. (AP Photo/Dake Kang) The armed robbery suspect hiding out in…

Constructing buildings with re-useable components

The Institute for Civil Engineering and Environment (INCEEN) at the University of Luxembourg have signed a “memorandum of understanding” with the Suisse Federal Laboratories of Materials Science and Technology (Empa) of the domain of ETH Zürich to collaborate on research on energy efficiency in the construction sector. As the building sector is generating a large amount of CO2 emissions, resource consumption and waste production, new eco-construction approaches are needed. Therefore, the first collaboration project entitled “Eco-Construction for Sustainable Development” (ECON4SD)…

Blockchain for Enterprise: Foundation, Key Modules & Structure

The hottest topic of this season is Blockchain and a mission to seek functional solution design to scale enterprise requirements. There are numerous designs for private blockchain, but all look for one single cryptographic mathematical solution to furnish all the key requirements. Solutions to the different applications may vary but they all share same infrastructural design, hence, this blog will list down a systematic approach to an enterprise blockchain solution. It will address foundation pillars involved and key modules for…

How virtual reality can defuse conflicts over building projects

The Immersive Engineering Lab is a modern working and presentation environment that allows immersive 3D displays for realistic, detailed, accurately rendered real-time visualization. Furthermore, the laboratory’s large media wall means it is ideally equipped for collaborative, multimedia work sessions. Credit: Uwe Voelkner / Fotoagentur FOX Fun, effective and easy to understand: New digital visualization technologies offer an excellent opportunity to improve communication with citizens on large building projects. Titled “Visualizing Building Projects,” the practical guidelines give planners, architects and public…

Construction material-based methodology for contingency base selection

In an era of global responsiveness, there is a continuing need for agencies and organizations to set up temporary contingency bases (CB) of operations in foreign nations. Examples of such CBs include epidemic hospitals, refugee camps, natural disaster response headquarters, and temporary military installations. The decision whether to import all construction material, to build entirely of local materials, or to purchase a combination of imported and local materials is a strategic decision. The outcome of such a decision will affect…

Sleek and Fast: Speeding Up your Fat Web Client

Once our RUM measurements and Session-weighted p90 were established so that we would know when we were at least as good as our existing site, we were almost ready to start the hard work of becoming sleek and fast. Knowing that RUM metrics and Session-weighted p90 were only going to be available once a daily Hadoop job completed, and that data from our beta group of internal employees was a bit noisy due to lower volume, we decided to set…

Dutch open ‘world’s first 3D-printed bridge’

A 3D printer laid some 800 layers of concrete to create the eight-metre bicycle bridge in the Dutch town of Gemert Dutch officials toasted on Tuesday the opening of what is being called the world’s first 3D-printed concrete bridge, which is primarily meant to be used by cyclists. There was applause as officials wearing hard hats and workmen’s jackets rode over the bridge on their bikes at the inauguration in the southeastern town of Gemert. “The bridge is not…

Construction prototype for ultra-thin concrete roof

Credit: Block Research Group / ETH Zürich Researchers from ETH Zurich have built a prototype of an ultra-thin, curved concrete roof using innovative digital design and fabrication methods. The tested novel formwork system will be used in an actual construction project for the first time next year. A prototype for an ultra-thin, sinuous concrete roof using innovative design and fabrication methods has been designed and built by researchers from the ETH Zürich. The shell is part of a roof-top apartment…

Timber bridges viable option for local roads

Fifteen fully loaded trucks per day typically cross a low-traffic county road bridge. To simulate this, the researchers applied a 32-kip, or 32,000 pounds-force, load to the middle of the bridge at a rate of one load per second. Credit: South Dakota State University Glulam timber bridges are viable and cost-effective options for replacing bridges on low-traffic county and township roads. That’s what researchers at the J. Lohr Structures Lab concluded after testing a full-scale glulam timber girder bridge. Glulam,…