Traité des ponts, ou il est parlé de ceux des Romains & de ceux des Modernes [Ensemble] Dissertation sur l'épaisseur des culées de ponts, sur la largeur des piles, sur la portée des voussoirs, sur l'effort et la pesanteur des arches...

First edition, published without the author's name, and illustrated with a frontispiece by Guérard and 26 folding plates by the same artist. The second work is also in its first edition and is illustrated with a frontispiece and 4 plates by Guérard.
Contemporary full brown calf binding. Richly decorated spine with raised bands. Red morocco title-label. Headcaps worn. Upper joint cracked at head and foot. Lower joint cracked at head. Corners bumped and trimmed. Overall rubbed.
A great classic on bridge construction and regulation. The second work is a technical analysis of bridge construction and the knowledge and calculations necessary for their realization. It includes measurement tables.