Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Fig. Faztons Girders ( Crystal Palace, London^ 1851). 3 feet ileep, and connected at top and bottom to thecolumns. Their great comparative depth enableilthe latter to resist great lateral thrust, and inqiartedextreme stiffness to the structure, with the least. possible weight. Z* is a form of wooden truss employed in the sannstructure. Girder-bridge. A br
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . Fig. Faztons Girders ( Crystal Palace, London^ 1851). 3 feet ileep, and connected at top and bottom to thecolumns. Their great comparative depth enableilthe latter to resist great lateral thrust, and inqiartedextreme stiffness to the structure, with the least. possible weight. Z* is a form of wooden truss employed in the sannstructure. Girder-bridge. A bridge supported by beamsresting ujion abutments at the ends. The beam isusually comjiound. A truss-bridjc. Girder-tester. A form of hydrostatic pressfor testing the strength of girders. The form shownis on wheels, and has a safety-valve. By boltingtwo girders together, and |ilacing this machine be-tween them, they may both be tested at one time. Girdle. {Dimnond-aitthuj.) Thejioint of greatestmarginal circumference of a brilliant-ciil diamond,at which it is gras]iod by the xrfiutg. The project-ing portion, rising about the xcltinq, is the bizil, andhas one tliinl of the depth of the stone. It hasthirty-two facets, and terminates in a flat f
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