The Etruscans used _____ columns on their temples

Which of the following is a structural system in which an overhanging beam or floor is supported at one end?

a. Post-­??and-­??lintel b. Cantilever c. Arch d. Suspension

What innovation was made possible by the development of steel for a skeletal structure?

a)  the skyscraper b)  the elevator c)  the cantilever d)  the suspension bridge