G - Physics – 01 – M
Patent
G - Physics
01
M
340/133, 73/90
G01M 5/00 (2006.01) G01N 3/10 (2006.01)
Patent
CA 1067719
ABSTRACT OF THE DISCLOSURE A truss to be tested is laid on its side on a table having an upstanding flange along one side. A load cell is interposed between one end of the bottom chord of the truss and the table flange and a block is interposed between the opposite end of the bottom chord and the table flange. A flattened flexible tube is disposed on edge along a similar flange on the opposite side of the table. Blocks are inserted between the flexible tube and the top chord of the truss to simulate a uniform snow load when the tube is inflated. One-half the total load is measured directly by the load cell and the deflection of the center of the bottom chord is measured by a scale on the table. If the deflection remains within an allowable amount so as to not close a limit switch within a prescribed loading interval, a timer actuates a rubber stamp to mark the truss as having passed the test.
247030
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