02808cam a22003493u 4500 77865 UtSlPG 20260610134814.0 m cr n 260607r20261885utu|||||o|||||||||||||| d UtSlPG fr iso639-1 TH Eiffel, Gustave, 1832-1923 Tour en fer de 300 mètres de hauteur Salt Lake City, UT : Project Gutenberg, 2026 1 online resource : multiple file formats text txt rdacontent computer c rdamedia online resource cr rdacarrier Release date is 2026-02-05 Claudine Corbasson and the Online Distributed Proofreading Team at https://www.pgdp.net (This file was produced from images generously made available by the Bibliothèque nationale de France (BnF/Gallica)) Tour en fer de 300 mètres de hauteur by Eiffel, Koechlin, Nouguier, and Sauvestre is an engineering proposal and technical report written in the late 19th century. It outlines the conception of a 300‑meter iron tower for a world exposition, explaining its structural logic, construction approach, and intended public and scientific uses. The likely topic is the design, feasibility, and purpose of a monumental iron tower. The text describes a new structural principle that curves the four iron corner uprights so wind forces are carried within them, avoiding heavy vertical lattice bracing. It details the form: four square-section legs set 100 meters apart, a grand entry arch, a first platform with large galleries for restaurants and gatherings, and a glazed summit with balconies and an electric beacon. It presents wind-load and stability calculations, total weight and foundation pressures, and predicts very small deflections under strong winds. It outlines elevators with controlled ascent, an electric lighting scheme, an erection schedule of about a year, and a total cost estimate including foundations and lifts, with smaller, cheaper variants possible. It argues iron or steel is practical while masonry is not, citing limits of mortar and the cautionary case of a very tall stone obelisk. Finally, it highlights scientific applications (astronomy, meteorology, physics, signaling) and proposes the tower as a lasting symbol of modern engineering. (This is an automatically generated summary.) Originally published: Paris: E. Capiomont & V. Renault, 1885 Tour Eiffel (Paris, France) Koechlin, Maurice, 1856-1946 Nouguier, É. (Émile), 1840-1897 Sauvestre, Stephen, 1847-1919 https://gallica.bnf.fr/ark:/12148/bpt6k854575s/f1.item https://www.gutenberg.org/ebooks/77865 118585 118585