Keywords: Galerie des Machines (Engineering) 5.jpg en Erection of the great truss girders Method used by Cail Co one of two methods used to erect the trusses One of the upper platforms of the rolling scaffolding from Paris Universal Exposition Civil Engineering Public Works and Architecture 1892 1889-05-03 http //vrc-cbe-uw blogspot com es/2008/06/galerie-des-machines-paris-1889-iron-or html Engineering The Paris Exhibition May 3 1889 Vol XLVII Engineering Journal other versions PD-old-70-1923 Structural details Galerie des Machines |