The Notebooks of Leonardo Da Vinci

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Author: Leonardo da Vinci

781.
ON THE REMEDY FOR EARTHQUAKES.

The arch which throws its pressure perpendicularly on the abutments will fulfil its function whatever be its direction, upside down, sideways or upright.

The arch will not break if the chord of the outer arch does not touch the inner arch. This is manifest by experience, because whenever the chord a o n of the outer arch n r a approaches the inner arch x b y the arch will be weak, and it will be weaker in proportion as the inner arch passes beyond that chord. When an arch is loaded only on one side the thrust will press on the top of the other side and be transmitted to the spring of the arch on that side; and it will break at a point half way between its two extremes, where it is farthest from the chord.

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Chicago: Leonardo da Vinci, "781. On the Remedy for Earthquakes.," The Notebooks of Leonardo Da Vinci, trans. Richter, Jean Paul, 1847-1937 in The Notebooks of Leonardo Da Vinci (New York: Dover Publications, Inc., 1970), Original Sources, accessed September 24, 2022, http://www.originalsources.com/Document.aspx?DocID=5AZFUCVJY9HUACP.

MLA: Vinci, Leonardo da. "781. On the Remedy for Earthquakes." The Notebooks of Leonardo Da Vinci, translted by Richter, Jean Paul, 1847-1937, in The Notebooks of Leonardo Da Vinci, New York, Dover Publications, Inc., 1970, Original Sources. 24 Sep. 2022. http://www.originalsources.com/Document.aspx?DocID=5AZFUCVJY9HUACP.

Harvard: Vinci, LD, '781. On the Remedy for Earthquakes.' in The Notebooks of Leonardo Da Vinci, trans. . cited in 1970, The Notebooks of Leonardo Da Vinci, Dover Publications, Inc., New York. Original Sources, retrieved 24 September 2022, from http://www.originalsources.com/Document.aspx?DocID=5AZFUCVJY9HUACP.