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Self-levelling may refer to: Self-levelling suspension; Self-leveling paint; Self compacting concrete; Self-leveling compound This page was last edited on ...
The Mapei Group has been publishing a two-monthly magazine in Italian and English since 1991. Adriana Spazzoli was the editor-in-chief of the magazine called Realtà Mapei for 28 years until 2019. 160,000 copies of the magazine are distributed all over Italy and 22,000 copies of Realtà Mapei International are published worldwide.
Self-leveling concrete was invented in 1952 by Axel Karlsson from Sweden. The first product was a combination of wood glue, fine sand and cement with additives. [1] It was called flytspackel, which directly translates to "floating putty". The term self-leveling can be traced back to a patent applied by the company Lafarge in 1997. [2]
[8] [9] This early attempt was an important step on the road to self-leveling, even if a full load would cause the whole car to lower evenly, rather than maintain height. In 1957, Cadillac introduced the Eldorado Brougham, a Rolls-Royce Silver Cloud competitor, featuring a new Air suspension with a self leveling feature. [10]
The other standard method of levelling in construction and surveying is called trigonometric levelling, which is preferred when levelling "out" to a number of points from one stationary point. This is done by using a total station , or any other instrument to read the vertical, or zenith angle to the rod, and the change in elevation is ...
A distinct sub-family was the Commonwealth inch-dimensioned versions that were manufactured in the United Kingdom and Australia (as the L1A1 Self Loading Rifle or SLR), and in Canada as the C1. The standard metric-dimensioned FAL was manufactured in South Africa (where it was known as the R1 ), Brazil, Israel, Austria and Argentina.