An investigation of hooped concrete columns . I] / 2 J + J Penr^/7/ spiral. 35 fs 1. There p = 1-1-2 mix. A = + | 1-2-4 mix. X= * (fj^ X= + (—[ 1C 1—3—6 mix. 100000 ioc:o - l) - l) - l] 2. ?or 1—2—4 mix where p_ varies, p = $, X= + (tv^ - l) ! p = $ A= + /—£ss_ _ i) \ 10000 p = , A= | / -la- - i l o ( 1000C / • 0027 10000 Combining the last two equations, we have: A= .0C089p + .00043 fp - ) 10000 Ak - 1 )? C0062p Effect of On page 35A are plotted the averagevalues of the ultimate loads for the
An investigation of hooped concrete columns . I] / 2 J + J Penr^/7/ spiral. 35 fs 1. There p = 1-1-2 mix. A = + | 1-2-4 mix. X= * (fj^ X= + (—[ 1C 1—3—6 mix. 100000 ioc:o - l) - l) - l] 2. ?or 1—2—4 mix where p_ varies, p = $, X= + (tv^ - l) ! p = $ A= + /—£ss_ _ i) \ 10000 p = , A= | / -la- - i l o ( 1000C / • 0027 10000 Combining the last two equations, we have: A= .0C089p + .00043 fp - ) 10000 Ak - 1 )? C0062p Effect of On page 35A are plotted the averagevalues of the ultimate loads for the columns of the three a study of the average curves for the 5-ft. columns,we find that the average value of the modulus of elasticity fasdetermined by taking a tangent to the longitudinal load-defor-mation curve at a point where the stress in the spiral isbecoming large) for the columns having the three percents ofspiral is about 72,000 lb. per Eulers formula for long columns is where E has the value for round ended columns an3
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