The story
Invented in 1844 by Thomas and Caleb Pratt.
Etymology from Wiktionary, CC BY-SA 4.0.
Pratt truss
Today it means: A bridge truss with vertical members and diagonals that slope down toward the centre. Full definition →
Today it means: A bridge truss with vertical members and diagonals that slope down toward the centre. Full definition →
Invented in 1844 by Thomas and Caleb Pratt.
Etymology from Wiktionary, CC BY-SA 4.0.