抄録
A historical sketch of railway truss girders constructed in Meiji era (1858-1912) is described. This is the first part dealing with the 200ft double Warren truss girders which is believed to be a representative of the British school of design. A total of 112 girders were imported from England and erected in 1886-1898, 22 of which were made of wrought iron and remainings were wrought iron and steel combined girders. In April 1985, 18 girders are still stand, most of them are in use, though 9 of them are shortened.
