The elastic properties of concrete under bi-axial loading . Dyn CIm o nn efe r Pio 19 On i —¥ LJ k-- i 4 -JI I 4-I 1 *n 1 1 1 1 1 ^ 1 Oi ^ ? ^ 10 1] 0 H (Ml i. __L H ~7f i. 40 Dy rvannonnefer 47 directly to l/lOOO inch and by estimation to l/lOOOO inch, orin temic of load as measured by dynamoneter , to units ofabout 1500-lb. directly and by estimation to ICO-lb. was calibrated in a 200 000-lb. Olsen screw testin£; machineseveral , both with increasing and decreasing incrementsof load. Tlie effect of the end bolts on the load-deflectiondiagram .vas not great,
The elastic properties of concrete under bi-axial loading . Dyn CIm o nn efe r Pio 19 On i —¥ LJ k-- i 4 -JI I 4-I 1 *n 1 1 1 1 1 ^ 1 Oi ^ ? ^ 10 1] 0 H (Ml i. __L H ~7f i. 40 Dy rvannonnefer 47 directly to l/lOOO inch and by estimation to l/lOOOO inch, orin temic of load as measured by dynamoneter , to units ofabout 1500-lb. directly and by estimation to ICO-lb. was calibrated in a 200 000-lb. Olsen screw testin£; machineseveral , both with increasing and decreasing incrementsof load. Tlie effect of the end bolts on the load-deflectiondiagram .vas not great, but the curve was smoother and theinstrument gave bet-er results when these were quite firraiy calibration curve followed the same path during severalsuccessive trials. Tlie dynamometer proved to be quite sensitivein indicating a falling off of the load, and promptly returnedto a zero reading when the load was removed. The load-deflectioncurve used in the crossed beam tests is shown in Pig. 13 with thefull line. The dotted line is drawn from a calibration madeafter this series of tests was completed and. after the instrumentwas used in another series of tests and loaded to about 14
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
