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Binishells are reinforced concrete thin-shell structures that are lifted and shaped by air pressure. The original technology was invented in the 1960s by Dante Bini , who built 1,600 of them in 23 countries.
He was able to design a unique pneumatic formwork using a huge low-pressure balloon. [3] This technique was patented in 1964. [6] An example of the shell-structure Dante Bini built for a public works initiative by the Australian government. In July 1965, he was able to lift his first concrete shell near Bologna. It was a sphere with a 12-meter ...
A concrete shell, also commonly called thin shell concrete structure, is a structure composed of a relatively thin shell of concrete, usually with no interior columns or exterior buttresses. The shells are most commonly monolithic domes, but may also take the form of hyperbolic paraboloids, ellipsoids, cylindrical sections, or some combination ...
A small "underground home" built in the style of Oehler, as only a simple, non-waterproofed hole in ground with simple planks and a plastic sheet to a wall, despite using free labour (ignoring the opportunity costs of not having time to go to work) and recycled materials, e.g. windows and planks for the wall, is estimated to be 30% cheaper to ...
A slurry wall is a civil engineering technique used to build reinforced concrete walls in areas of soft earth close to open water, or with a high groundwater table. [1] This technique is typically used to build diaphragm (water-blocking) walls surrounding tunnels and open cuts, and to lay foundations .
If the wall is a thick one, the holes should extend quite through it. The fire boxes with air-blast, already described, are then set to work on both sides of the wall, at the level of the bore-holes, until the brickwork is thoroughly heated and dried. In the Charlottenburg Palace this result has been attained with walls 1 metre (39 inches) thick.
A post-hole auger. An earth auger, earth drill, or post-hole auger is a drilling tool used for making holes in the ground. [1] It typically consists of a rotating vertical metal rod or pipe with one or more blades attached at the lower end, that cut or scrape the soil.
Other manufacturers were thus compelled to use other terminology to describe the process such as shotcrete, pneumatic concrete, guncrete, etc. Shotcrete is an all-inclusive term for spraying concrete or mortar with either a dry or wet mix process. However, shotcrete may also sometimes be used to distinguish wet-mix from the dry-mix method.