Gizmodo has a great post on 2 inspirational women who paved the way for female engineers and architects. Above is Margaret Ingels, the first woman to receive a graduate degree in mechanical engineering in the US.

Because there was no architecture school at the University of Kentucky, Margaret Ingels studied engineering at the suggestion of professor, and became the first woman to receive a graduate degree in mechanical engineering in the country. She worked across a wide range of emerging technologies at the time, including at the Chicago Telephone Company and the United States Bureau of Mines.

But an early fascination with air conditioning—not a prevalent technology in the early 1900s!—led her to Carrier Lyle Heating and Ventilation Corporation, where she helped develop the Anderson-Armspach dust determinator, which became the industry standard for air filtration, as well as the sling psychrometer, which measures air humidity and is still used today. She was well-known for her lectures and traveled across the country to deliver them, including one entitled “Petticoats and Slide Rules.”

This is Emily Warren Roebling, a chief engineer on the project to use caissons on the Brooklyn Bridge.

Marrying into a family of engineers was fortuitous for Emily Warren: Her husband was Washington Roebling, a civil engineer, and father-in-law was John A. Roebling, who developed the revolutionary design for the Brooklyn Bridge. Emily and Washington traveled together to Paris to study the possibility of using caissons on the Brooklyn Bridge, a new technology that used pressurized chambers to allow workers to install bridge pilings underwater. John contracted tetanus after he crushed his foot during construction, and Washington took over as chief engineer—but Washington, sadly, succumbed to the very technology he championed, getting decompression sickness and staying bedridden during the final phase of construction.

For 14 years, Emily acted as chief engineer on the project while fighting to ensure that Washington did not lose credit for his work. In 1883, she was the first person to cross the finished Brooklyn Bridge in a carriage.

Above is Aine Brazil.

As vice chairman of the engineering firm Thornton Tomasetti, Aine Brazil has been responsible for overseeing groundbreaking methods that have allowed some of the world’s tallest and most unique buildings and infrastructure projects to be constructed.

The Irish native worked at engineering firm Arup before starting at Thornton Tomasetti, where she was the lead structural engineer for 11 Times Square, a game-changing skyscraper for the Midtown neighborhood. Brazil is currently working on the Hudson Yards development, which will use a concrete “apron” to float six city blocks over a train yard.

Head over to Gizmodo to see the rest of the list.