What is a post-and-lintel system of construction? What problem can occur with a post-and-lintel system? Provide an example of an ancient structure that used a post-and-lintel system.

1.)post and lintel (also called prop and lintel or a trabeated system) is a building system where strong horizontal elements are held up by strong vertical elements with large spaces between them

2.)A post-and-lintel system uses vertical posts which are separated to support a horizontal beam. The main problem that can occur with a post-and-lintel system is cause by the weight is unevenly distributed and the center is unsupported, which can cause sagging over time

3.)Stonehenge is an example of an ancient structure that used a post-and-lintel system.