Revision of the Niagara Railway Arch Bridge (1920)
Charles Evan Fowler · [New York] : American Society of Civil Engineers · leaf 35
form. Spots about 1£ in. in diameter were cleaned of paint and rust andplaced either 8 in. or 20 in. apart as needed. The holes for theu points were drilled with a Yankee drill about -^ in. deep, andwith a No. 56 drill. The burr was removed by a flat-angle countersinkand finished by rubbing with a… … Heavy Lines indicate members on whichstress measurements were made. Fig. 11.—Members of Niagara Arch to Which Strain Gauges Were Applied. Permanent Gauge Points.—These were placed on members, as indi-cated in a list in the Company files, so that readings on such memberscould be checked up for…
Bridges
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