All 14 elements produced on a spin-off frame printer by 3Deposition, founded by experts from the Faculty of Mechanical Engineering of the Technical University. The printer applies a 50 millimeter wide layer of special concrete mix at a speed of 155 millimeters per second. It can print up to three-meter objects. It is possible to disassemble it, take it to another place and reassemble it.

The elements will be connected by steel pipes. “To increase the strength, the individual walls are cast with recycled concrete and reinforced shaped steel reinforcement. They are then anchored to the concrete foundations at a non-freezing depth, “said 3Deposition founder David Škaroupka.

3D printing of a parkour playground|photo:Jan Prokopius, VUT in Brno

For printing elements use a special mixture that contains cement, aggregates, water, polypropylene fibers and other additives. “The mixture must be easy to pump, but it must not run off and must solidify quickly. We managed to achieve this thanks to additives such as stabilizers, setting accelerators and plasticizers, “described Michal Zámečník from Master Builders Solutions CZ.

Printing a permanent ten hours of pure time. The printed elements are poured with recycled rebetong concrete for reinforcement. Instead of natural stone, it contains recycled brick crumb, so it uses construction waste, which ends up in landfills in large volumes in the Czech Republic.

The printed playground is dedicated to the city district of Prague 11 by Stavební spořitelna Česká spořitelna, which is one of the founding members of the Association of Innovative Technologies and 3D Printing in Construction. Earlier, the savings bank supported the first 3D printed house in the Czech Republic called Prvok.