3D printing of a building something that was still a pipe dream just a few years ago has become reality IoT and cyber physical systems including ma chine control sensors and real time monitoring In spite of all the digitization and connectivity it features BIM cannot and should not replace per sonal dialog and the shared understanding of a standardized organizational structure and work flow The hardware and software as well as the databases here merely supply the requisite infra structure and provide all the parties involved in a construction project with direct access to the rel evant information at any planning stage Plumb ers and tilers are able to match their data and also share them with painters and electricians as needed And if a crane for installing an eleva tor fails all the technical crews affected by the equipment downtime will receive an alert in real time Ideally a plan B that minimizes the loss will be sent along with the alert From planning to teardown BIM supports the entire lifecycle of a building or fa cility from initial planning to construction and use to potential dismantling including environmentally compliant disposal The latter aspect can be taken into account as early as in the planning stage and therefore closes the loop In the construction stage the machines involved can be controlled using so called BIM2Field appli cations This is an increasingly important factor because just like factories construction sites are using more and more advanced technologies Even at this juncture self driving machines exist that distribute materials at the site just in time Drones assist with surveying work and inspec tions The successor of the bricklaying robot Hadri an X is said to be able to join 1 000 bricks together per hour instead of the previous 200 Plus a huge 3D printer produced the first three story 12 5 by 17 5 by 7 5 meter 41 by 57 by 25 foot residential building on site in Germany this fall at a breath taking speed of processing 10 metric tons 11 short tons of a special cement per hour At the end of October 2020 construction equip ment manufacturer Hilti unveiled its semi auto mated mobile construction robot for overhead drilling jobs The so called Jaibot is able to inde pendently and accurately position itself in interior spaces drill holes and subsequently mark them for the various construction crews The autono mous system is easy to use without expert know ledge Hilti has no doubts that digitally planned construction projects and their implementation using BIM capable robotic solutions promise to deliver a significant productivity gain In addi tion robotic solutions can mitigate the shortage of skilled labor Perfect planning saving resources The digital twin can supply not only the control data for such high tech machines Even tradition al construction machines like excavators dozers and road pavers have long begun to feature 3D ma chine control units that are fed with digital BIM and 78

Vorschau Schaeffler tomorrow 02-2020 EN Seite 78
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