Unformatted text preview: Whitneys stress block as defined in the ACI Code. Compare your results with that obtained in part 1d). 3) If compression reinforcement with area equal to 25% of that of the tension steel is added to the section, what is the ultimate curvature capacity of the section based on the model used in Part 1? Use d = distance from extreme compression fiber to centroid of compression reinforcement = 2.5 in. Material properties: Concrete: f c = 4500 psi; co = 0.002; cu = 0.006 (ultimate strain capacity of concrete), w = 145 lb/ft 3 Steel: f y = 63 ksi; f su = 105 ksi; E = 29000 ksi; E sh = 1500 ksi; sh = 0.008; su = 0.12. 14 24 4 #8 21.5 Note: Compression reinforcement only for Part 3....
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- Winter '09
- Compression Reinforcement, University of Michigan Department of Civil and Environmental Engineering, concrete compression response, linear descending tail