Bridge

How ancient Roman bridges were built https://twitter.com/Rainmaker1973/status/1628806023317188610

Bridge building has been one of the tests for second year University of Canterbury civil engineering students in Christchurch for nearly 30 years. Graduates have to build a bridge that supports 2 people, but collapses with 3 https://x.com/Rainmaker1973/status/1719268443990491615