Autonomous excavator constructs a 6-meter-high dry-stone wall
The Menzi Muck picks and scans each boulder to be placed in the correct position, Circularity Park in Oberglatt, Eberhard AG, 2021-2022
Credit: © Gramazio Kohler Research, ETH Zurich, Eberhard AG. Photo: Marc Schneider
ETH Zurich researchers deployed an autonomous excavator, called HEAP, to build a six metre-high and sixty-five-metre-long dry-stone wall. The wall is embedded in a digitally planned and autonomously excavated landscape and park.
The team of researchers included: Gramazio Kohler Research, the Robotics Systems Lab, Vision for Robotics Lab, and the Chair of Landscape Architecture. They developed this innovative design application as part of the National Centre of Competence in Research for Digital Fabrication (NCCR dfab).
Using sensors, the excavator can autonomously draw a 3D map of the construction site and localise existing building blocks and stones for the wall’s construction. Specifically designed tools and machine vision approaches enable the excavator to scan and grab large stones in its immediate environment. It can also register their approximate weight as well as their centre of gravity. An algorithm determines the best position for each stone, and the excavator then conducts the task itself by placing the stones in the desired location. The autonomous machine can place 20 to 30 stones in a single consignment – about as many as one delivery could supply.
Reference
Johns RL, Wermelinger M, Mascaro R, Jud D, Hurkxkens I, Vasey L, Chli M, Gramazio F, Kohler M, Hutter M: A framework for robotic excavation and dry stone construction using on-site materials, Science Robotics, 22 November 2023, DOI: 10.1126/scirobotics.abp9758
Further information
https://gramaziokohler.arch.ethz.ch/web/d/forschung/382.html
https://rsl.ethz.ch/robots-media/heap.html
https://girot.arch.ethz.ch/events-conferences/robotic-embankment-prototype
Journal: Science Robotics
DOI: 10.1126/9758
Method of Research: Experimental study
Subject of Research: Not applicable
Article Title: A framework for robotic excavation and dry stone construction using on-site materials
Article Publication Date: 22-Nov-2023
Media Contact
All latest news from the category: Architecture and Construction
Newest articles
Faster, more energy-efficient way to manufacture an industrially important chemical
Zirconium combined with silicon nitride enhances the conversion of propane — present in natural gas — needed to create in-demand plastic, polypropylene. Polypropylene is a common type of plastic found…
Energy planning in Ghana as a role model for the world
Improving the resilience of energy systems in the Global South. What criteria should we use to better plan for resilient energy systems? How do socio-economic, technical and climate change related…
Artificial blood vessels could improve heart bypass outcomes
Artificial blood vessels could improve heart bypass outcomes. 3D-printed blood vessels, which closely mimic the properties of human veins, could transform the treatment of cardiovascular diseases. Strong, flexible, gel-like tubes…