Sleeper
part · 1800 · Industrial Revolution
A crosspiece that holds the rails.
Principles and materials it uses
- Reinforced concrete — is made of. Reinforced concrete sleepers.
- Wood — is made of. The first sleepers were wooden.
- Concrete — is made of. Today sleepers are more often concrete than wood.
Where it is used
- Railway track — is part of. Sleepers.