AutoCAD LT is the lower-cost version of AutoCAD, with reduced capabilities, first released in November 1993. Autodesk developed AutoCAD LT to have an entry-level CAD package to compete in the lower price level. Priced at $495, it became the first AutoCAD product priced below $1000. It was sold directly by Autodesk and in computer stores unlike the full version of AutoCAD, which must be purchased from official Autodesk dealers. AutoCAD LT 2015 introduced Desktop Subscription service from $360 per year; as of 2018, three subscription plans were available, from $50 a month to a 3-year, $1170 license.
New AutoCAD 2018 Portable
AutoCAD is licensed, for free, to students, educators, and educational institutions, with a 12-month renewable license available. Licenses acquired before March 25, 2020 were a 36-month license, with its last renovation on March 24, 2020.[27] The student version of AutoCAD is functionally identical to the full commercial version, with one exception: DWG files created or edited by a student version have an internal bit-flag set (the "educational flag"). When such a DWG file is printed by any version of AutoCAD (commercial or student) older than AutoCAD 2014 SP1 or AutoCAD 2019 and newer, the output includes a plot stamp/banner on all four sides. Objects created in the Student Version cannot be used for commercial use. Student Version objects "infect" a commercial version DWG file if they are imported in versions older than AutoCAD 2015 or newer than AutoCAD 2018.[28]
CadTools, free 3Dand surfaceutility for AutoCad, ZWCAD 2018-2021 and BricsCADDesign your civil work in real 3D with this handy tool!Latest update: 2023-01-06Build 758
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M. Kokorus, F. Pizarro, W. Eyrich and S. Heuser, "From Optical Symbol Recognition (OSR) of Point Clouds to the Substation Information Model," 2018 IEEE/PES Transmission and Distribution Conference and Exposition (T&D), Denver, CO, USA, pp. 1-4., 16-19 April, 2018
In 2018 two technical advancements in detection were reported that bring the cost-effective mapping of underground infrastructure at the municipal, regional, and national level closer to reality. T2 Utility Engineers, based in Whitby, Ontario commercially use a IDS GeoRadar Stream EM multi-channel ground penetrating radar (GPR) array towed routinely at 10-12 km/hr to capture subsurface data. In a separate initiative a successful proof of concept has been reported by DGT Associates in Mississauga, Ontario in which data collected by a Siteco rig combining a Faro mobile laser scanner and Sensors and Software GPR arrays collected data simultaneously above and below ground at roadway speeds of 80 to 90 km/hr. In both cases the data was collected in soil conditions that were less than optimum for GPR. Being able to capture data at or near roadway speeds addresses an important obstacle to efficiently creating 3D maps of the underground. In both cases significant time was required to post-process the collected sc 3D models. However, advances in software are making this process more reliable and faster.
But perhaps the initiative that everyone interested in improving knowledge of the underground should be following is a national program in the Netherlands which is supported by legislation and standards. In 2015 a new law was passed by the States General which created the Basisregistratie Ondergrond (BRO) or Key Registry for the Subsurface. This database is open and accessible to all citizens of the Netherlands. This went live in 2018 and requires that if you excavate or drill you have to share your data relating to geotechnics with the BRO registry. In addition if when using the data in the registry you find something is incorrect you are required to report it.
Traditionally when a new pipeline is put in the ground, either its location and depth is only approximately known or it has to be surveyed by a registered surveyor. Now there is another alternative. At GeoAlberta 2018 is Edmonton Joseph Hlady of Lux Modus described how his company has developed a rig and software running in the cloud that allows this information to be captured in "near real-time" as the pipeline is constructed. The rig includes LiDAR and photo cameras which capture the trench and the pipeline by driving along each section before the trench is filled to record a point cloud and photos. The point cloud and images are uploaded for cloud processing and within minutes to hours a digital twin of the pipeline can be viewed by anyone with a browser that supports HTML5 including mobile devices.
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