Works in Iron: Bridge and Roof Structures

abutments adopted arch arched bridge asphalte bolts bottom flange bracing building caissoon carried cast iron catenary Centimetre centre chains cofferdam compression concrete considerable construction corrugated corrugated galvanised iron cost cross girders curved cylinders deep depth derrick diagonal diameter engineers English engraving erected Example excavated feet ferro flanges galvanised guy ropes Handyside hierro holes horizontal iron girders iron roofs ironwork kind laid lattice girders length longitudinal main girders masonry material metal moving load necessary ordinary paint pieces piers pig iron placed plate girders platform ponte Portland cement purlines rafters rails railway bridges ribs riveted road roadway rolled roof covering roof principals ropes sash bars screw piles shape sheets shown in Fig side span spandrels square foot steel stone strength structure struts superstructure surface suspension bridges thick timber tons top flange trave trussed vertical weight wide width wrought iron zinc