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3D printing, or additive manufacturing, is the construction of a three-dimensional object from a CAD model or a digital 3D model. [1] [2] [3] It can be done in a variety of processes in which material is deposited, joined or solidified under computer control, [4] with the material being added together (such as plastics, liquids or powder grains being fused), typically layer by layer.
A 3D printing company, MX3D based in the Netherlands is planning to print a 3D bridge over a canal in the center of Amsterdam. The inventors created a robotic structure that can fully rotate to ...
In a matter of months, many new companies began to emerge. This led to many new endeavors that reached the media, such as, in 2017, the first pedestrian 3d printed bridge [114] and the first cyclist 3d printed bridge, [115] plus an early structural element made with 3d printing in 2016, [116] among many others.
A portcullis (from Old French porte coleice 'sliding gate') is a heavy, vertically closing gate typically found in medieval fortifications. [1] A portcullis gate is constructed of a latticed grille , made of wood or metal or both, which slides down grooves inset within each jamb of the gateway.
An example of how 3D printing can be included in the design process is automotive design. [19] There, it is necessary to quickly test and verify a prototype to get the design approved for production. The reduced post-processing steps induced by the multi-material 3D printing technology result in a shorter fabrication time.
The bridge connects the two parts of the city of Mostar, spanning the Neretva River. It consists of a single humpbacked arch with a 27-meter span, 4 meters in width, and 30 meters in length. The bridge was constructed using advanced architectural techniques and materials, enabling it to withstand centuries of conflict, except for the most ...
Advances in technology such as 3D Printing, drones and robotics, GPS, building information modelling and pre-fabrication increased the efficiency of construction. The United States was the first adopter of 3D printing technology in construction where huge machines would "print-out" cement in layers to form the walls of buildings. [27]
Current 3D printed projects have been limited to model prototyping and low-rise, large-area buildings as opposed to high-rise commercial buildings because of restrictions in 3D printer technology. [8] Printers need to be compatible with the height of the building, so additional research in 3D printer stability and design is required.
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