Strength and Behavior of Thick Walled Reinforced Concrete Conduits.
Final rept. 1 Jul 70-31 Mar 76,
ILLINOIS UNIV AT URBANA-CHAMPAIGN DEPT OF CIVIL ENGINEERING
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The results of tests of 8 three-opening reinforced concrete conduits designed for soil loadings of 30 ksquare feet are presented and discussed. The test specimens were 38 scale models of prototype designs, and were constructed with conventional deformed bars and concrete with 1-in. aggregate. The clear span-depth ratios in critical members ranged from 2.5 to 5.6. External loads were applied in both vertical and horizontal directions simultaneously, so that significant thrusts were acting in all members in addition to the bending and shear forces. Failure loads ranged from 82.5 to 150 ksquare feet vertical load for members with span-depth ratios of 4.0 or less. Horizontal loads of 60 to 75 ksquare feet produced failures in members with span-depth ratios of 5.6. All members failed in shear.
- Civil Engineering
- Construction Equipment, Materials and Supplies