Nouvel Opéra : rapport à S.E. Monsieur le Maréchal de France, Ministre de la Maison de l'Empereur et des Beaux-Arts : marche des travaux pendant l'année 1866[-1869]
This is a French administrative report by architect Charles Garnier on construction progress at the Paris Opera house during 1866, presented to the Minister of the Emperor's Household and Fine Arts in 1867. The single picture is a technical line diagram of a bent beam under load, with forces P and T and dimensions f and l labelled, showing structural analysis rather than decoration. A designer could take from it a plain schematic style, with dashed reference lines, arrowed force vectors and italic letter labels for annotating a technical drawing.
![Picture 1 of 1 from Nouvel Opéra : rapport à S.E. Monsieur le Maréchal de France, Ministre de la Maison de l'Empereur et des Beaux-Arts : marche des travaux pendant l'année 1866[-1869] (1867), leaf 236](https://img.insideoutlibrary.com/img/200/ia-nouveloperarappo00garn-236-0.webp)