The elastic properties of concrete under bi-axial loading . on the crossto that on the arm vzas after the first increment of loadbut, unlike the relation in the other t7;o similar pieces, itrose to , , , , and at stresses of 400,600, 800, 1000 and 1200 lb. per Failure occurred at thecenter of the test piece at a much lo?^er stress than the specimen may have been eccentrically loaded but the ileforma-tions on the gauge-lines on the arm (1, 2, S, 11, 12 and IZ)seem to show decidedly it was not eccentrically these curves on page 170. I
The elastic properties of concrete under bi-axial loading . on the crossto that on the arm vzas after the first increment of loadbut, unlike the relation in the other t7;o similar pieces, itrose to , , , , and at stresses of 400,600, 800, 1000 and 1200 lb. per Failure occurred at thecenter of the test piece at a much lo?^er stress than the specimen may have been eccentrically loaded but the ileforma-tions on the gauge-lines on the arm (1, 2, S, 11, 12 and IZ)seem to show decidedly it was not eccentrically these curves on page 170. It is felt that the concrete inthis specimen have been injured in some way before thetest and that the increased unit deformation at the centerwas abnormal. This opinion is strengthened by two facts: (1)that in all other specimens tested the ratio of the the cross to that on the arm was practically a constant forall stresses, while the variation in 2072 was over 60 per cent.,and (2) that in all other specimens tested, the deformation at. 100 Table vni. Compression >3pecimen5 2071, 2072 , V3 ^Ljnnmony of Ratios of Defornnat i on> om the,Cr-oas to Defornnot»on on the Arm. V-/ ri 1 T x5tre5s Defomnation on CrossDe-formation on Arm AV. la 073 Averoae I800 leoo I400 .79 .84 .6Z .5Z .84 .83 ).OI 1 ooo •81 .84 .63 .94 aoo .60 .84 .90 aoo .80 .64 .66 .79 .98 .84 .67 zoo .79 .86 .84 .8Z .64 Average .80 .64 .6Z .59
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1912
