Mathematical reconstruction of the rise of the Alexander Column
The article is devoted to the issues of mining and pretreatment of the column and the pedestal in the Piterlak quarry, loading the column on a barge and delivery to St. Petersburg. The basis for the article is an album of illustrations of the rise of the Alexander Column, made by A. Montferrand and a literary review. The admiration of many architectural structures of the 18th-19th centuries is caused by the question of how this could be done at that time, without the power of steam and electricity. There are no such questions about the constructions built after the middle of the 19th century -there were already many lifting mechanisms, photography documented the construction process, and the dug Suez Canal testified to the increased capabilities of humanity and strengthened engineering skills. No one doubts that the Eiffel Tower was built without the use of helicopters and the achievements of an antediluvian civilization, but in relation to the unique creation of A. Montferrand, i. e. the Alexander Column in St. Petersburg, there is a clear distrust in the reality of the achieved result — the column of more than 27 meters high, more than 3 meters in diameter and weighing more than 600 tons stands vertically on the end surface without additional supporting structures. This article, presented in three reports, is devoted to the attempt to mathematically justify the possibility of what was achieved at the level of knowledge, skills, mechanisms and technologies of the beginning of the 19th century.