French-British engineer Marc Isambard Brunel is best known for constructing the Thames Tunnel and had been the chief engineer of New York City. He had also spent time in a debtor’s prison for his association with loss-making projects. He was the father of renowned engineer Isambard Kingdom Brunel.
French engineer Henry Darcy had a difficult childhood, having lost his father at 14. Raised by his mother, he later joined the École Polytechnique. He proposed Darcy’s law, which explains the flow of fluids in porous media. He also designed the water supply system of Dijon, his native city.
Jean-Baptiste Biot was a French physicist, mathematician, and astronomer. He was a co-discoverer of what became known as the Biot-Savart law of magnetostatics. He is also credited with establishing the reality of meteorites. He made major contributions to the fields of optics and magnetism as well. Cape Biot in eastern Greenland is named in his honor.
Remembered for designing numerous reinforced-concrete bridges across France, Eugène Freyssinet, an early twentieth century structural and civil engineer, was also one of the pioneers in the use of prestressed concrete. Among his most prestigious projects was the Plougastel Bridge over the Elorn River. With a total length of 888 meter, this was the largest reinforced-concrete bridge constructed till that time.
Nineteenth-century French civil engineer and economist Jules Dupuit ascertained the economic issues associated with public works. He pioneered the use of the diminishing marginal utility curve, while finding out the optimum cost for using a bridge, and also explained what later came to be known as consumer surplus.
Jean-Rodolphe Perronet was a French structural engineer and architect best remembered for designing several stone arch bridges, including the Pont de la Concorde which is widely regarded as his best-known work. Such was his popularity that Jean-Rodolphe Perronet was appointed as the director of the Royal office of designers in 1747.
French architect Émiland Gauthey was the man behind the creation of many civic buildings, bridges, and theaters. He began his career as a deputy engineer at Chalon-sur-Saône and later took over as the Chief Engineer of the États de Bourgogne. He received the Légion d'honneur for his achievements.