The company also used Trimble FieldLink MR, which combines the context of the Trimble XR10 with Hololens 2 with the accuracy and precision of Trimble's layout instruments. This was a prototype for their self-perform operations (SPO) warehouse to develop training and education on robotic total stations and other construction technology. Using Trimble Access for surveying, Kettler keeps track of surfaces created on the fly and exports reports that show deviation from the theoretical space. "This workflow is more efficient than using CAD," he said. "The ability to manipulate how I export the data and stake surfaces and export deliverables quickly helps me collect data in the field accurately and efficiently." Cloud Connection Key to Sharing Data and Ensuring Accuracy All data transfer between the VDC and surveying teams goes through the field software, where models and project data are uploaded to the cloud for viewing and access in real time. Trimble software and 3D laser scanner have been beneficial to verify installed formwork matches the model utilizing the point cloud. With the forms milled to a specific shape, Gabe Kettler can scan the formwork and rebar at various stages of placement to ensure that the location is accurate, and that enough coverage of the reinforcing bar is achieved. "The surfaces inside survey equipment are limited to the Z-Axis, but in Trimble Connect, I can select a certain elevation and points on the interior face of the concrete model and compare that to the existing bar to quickly verify the clearance," said Kettler. "Anyone in the industry knows how critical it is to verify the clearance, and we can do this with confidence." Keeping an Eye on Sustainability In pursuit of net-zero emissions and net-positive energy for the Ocean Pavilion, Turner is analyzing embodied carbon and selecting building materials that are free of toxic chemicals and being deliberate in its construction material choices by minimizing plastics, vinyl, biocides and red-list materials. When it opens to the public in 2024, the Ocean Pavilion will feature 3,500 sustainably sourced plants and animals including sharks and rays, a variety of fish, up to 30 species of corals, anemones, sea stars, giant clams, and other marine life. Bryan Williams, Portfolio Manager at Trimble. Bryan has nearly 30 years of international experience working in the construction industry as a site engineer, construction surveyor, project supervisor and consultant. He has spent the last 15 years developing and marketing intelligent positioning solutions for the construction industry as part of Trimble’s Buildings. BRYAN WILLIAMS , Portfolio Manager at Trimble. Bryan has nearly 30 years of international experience working in the construction industry as a site engineer, construction surveyor, project supervisor and consultant. He has spent the last 15 years developing and marketing intelligent positioning solutions for the construction industry as part of Trimble’s Buildings.
tools enabled the creation of detailed installation sequence drawings specifically developed for the tank’s formwork and concrete lift drawings. Pour breaks and planning for the installation of the habitat's complex formwork and installation drawings for the field were carried out using BIM software. “To achieve the final geometry in this large monolithic self-consolidating pour without straight edges, we, along with our trade partners, created 229 custom padded formwork panels that were CNC milled, coated in fiberglass and supported by Peri formwork,” said Beatty. Taking the Model to the Field With no straight lines, the complex geometry of the habitats made it difficult to lay out in the field using traditional methods. To solve this, Turner imported the 3D model directly into field software and used a robotic total station for their model-based layout. The technology is designed specifically for contractors and enables people of various backgrounds to achieve the highest level of accuracy without needing a surveying degree. This enabled teams in the field to select lines, surfaces, and features directly from the model and lay them out without additional processes or point management. In addition, laser scan data of the installed rebar assemblies enabled the team to ensure proper placement of all the habitats reinforcing when compared to the model content. "With the data available in the cloud, the surveying and VDC groups can collaborate and work hand in hand," said Gabriel Kettler, the survey department manager at Turner Construction Company. "It enables them to track and monitor changes to the design quickly and easily and implement that data in the field where it needs to be used."
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csengineermag.com
Summer 2024
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