October - 2019CONSTRUCTIONTECHREVIEW.COM 19operate two scanners simultaneously, typically on tripods. The cameras can also be attached to drones or robots to capture difficult to reach or dangerous spaces. The data can be collected live using Wi-Fi connections from the scanner to a laptop, or it can be collected on an SD card located in the camera. Typically, when a building or site is completely mapped, the data is then uploaded to a computer running various types of Building Information Modelling (BIM) software. Over the past 25 years, BIM has become a standard tool for engineers and architects because it allows them to manipulate elements of a design on a computer screen before the first shovelful of dirt is moved. With 3-D reality capture scanning, the data is collected and uploaded so engineers can use BIM software to work with a detailed and accurate electronic rendering of an existing building or construction site.While the technology is typically used to map older brown field sites and buildings where detailed drawings and blueprints may no longer exist, 3-D mapping can be useful for other types of projects, such as green field sites and modular development. In the case of modular construction, the technology would be used to map the site on which the project is being developed. The first step would be to use 3-D scanners to capture the entire site, not just the area where the building is likely to go. Then, once the data is uploaded to a BIM design program, engineers can use desktop, virtual reality glasses, and augmented reality systems to see how various modules would fit into different parts of the site. Sometimes, design teams find that the module placement they'd planned for isn't optimal and that the building or complex would work better in a different location on the site or in a different configuration. The program also allows developers to see where infrastructure, such as electric and plumbing, and other resources would best fit into the design.It's not just buildings that can be moved around and manipulated. Project managers can also experiment with different placements of various pieces of construction equipment to see how they should be deployed, making the technology very useful for construction management. For instance, the best strategy for lifting modules into a site can be determined by planning crane layouts virtually. In essence, the technology allows project managers and their design teams to complete a virtual run-through of the design, planning, and construction processes to make sure that there are no surprises when it's time to deliver and assemble the modules.3-D reality capture scanning is a valuable tool that can provide enormous benefits when it comes to modular construction. It's imperative that when modules come out of the factory, they will fit seamlessly onto the site for which they are intended. As the cliché goes, "time is money." Time spent making adjustments and site improvements during the installation process can lead to large unplanned expenses, as well as construction complications. 3-D reality capture scanning can assure that the process goes smoothly, eliminating these unnecessary time and financial headaches. 3-D reality capture scanning is a valuable tool that can provide enormous benefits when it comes to modular constructionMark Franklin
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