| David Cushman Coyle | |
| Birth Date: | 1887 |
| Death Date: | 1969 |
| Death Place: | Washington, D.C., U.S. |
| Occupation: | Structural engineer, economist, author |
| Spouse: | Doris Coyle |
| Children: | 2 sons, 1 daughter |
| Parents: | John Patterson Coyle Mary Cushman |
David Cushman Coyle (1887–1969) was an American structural engineer, economist, and writer. Coyle was the structural engineer of the Washington State Capitol and a prominent economic thinker during the New Deal.[1]
David Cushman Coyle was born in 1887. His parents were John Patterson Coyle, a Congregational minister, and Mary Cushman Coyle. His sister was Grace Coyle (1892–1962).
Coyle was a structural engineer, economist and writer.[2] He also wrote several books on economic theory and policy, including Brass Tacks (1935) and Uncommon Sense (1945).
He engineered the concrete dome that spans the building's rotunda using a cantilevered truss system. At 287 feet in diameter, it remains the largest free-standing masonry dome in North America.[3]
Coyle had two sons, and a daughter by his first wife. He was married to Doris Porter Coyle upon his death.[4] He resided in Washington, D.C. and Cliff Island, Portland, Maine, and vacationed in Cape Porpoise, Maine.[4] He was a member of the Cosmos Club in Washington, D.C. He died in 1969 in Washington, D.C.[4]