3. Bar Stress Near Tension Face of Member Equal to 0.5 fy, (fs = - 0.5 fy)
Figure 4 - Strains, Forces, and Moment Arms (fs = - 0.5 fy)
3.1. c, a, and strains in the reinforcement
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| CSA A23.3-19 (8.4.2) |
| CSA A23.3-19 (8.4.3(a)) |
| CSA A23.3-19 (10.1.3) |
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Where c is depth of the neutral axis measured from the compression edge of the column section. | CSA A23.3-19 (3.2) |
| CSA A23.3-19 (10.1.7) |
Where: | |
a = Depth of equivalent rectangular stress block | CSA A23.3-19 (3.2) |
| CSA A23.3-19 (Equation 10.2) |
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3.2. Forces in the concrete and steel
| CSA A23.3-19 (10.1.7) |
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The area of the reinforcement in this layer has been included in the area (ab) used to compute Crc. As a result, it is necessary to subtract α1ϕcfc’ from ϕsfs’ before computing Crs: | |
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