From: A Unified Formula for Calculation of Crack Width and Spacing in Reinforced Concrete Beams
Data sources | No.of data /n | hte = 0.4 h | hte = 0.5 h | hte = 4as | hte = 2as | hte = 5.9d + c + d | hte = 5.5d + c + d | ||||||
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μ | δ | μ | δ | μ | δ | μ | δ | μ | δ | μ | δ | ||
C30-1-1 | 7 | 0.80 | 0.08 | 0.77 | 0.13 | 0.78 | 0.10 | 0.80 | 0.05 | 0.78 | 0.10 | 0.79 | 0.09 |
C30-1-2 | 7 | 1.16 | 0.08 | 1.11 | 0.09 | 1.13 | 0.08 | 1.16 | 0.11 | 1.13 | 0.08 | 1.15 | 0.08 |
C30-2-1 | 4 | 0.80 | 0.07 | 0.79 | 0.12 | 0.79 | 0.08 | 0.79 | 0.02 | 0.82 | 0.05 | 0.83 | 0.05 |
C30-2-2 | 6 | 1.22 | 0.07 | 1.25 | 0.09 | 1.22 | 0.07 | 1.15 | 0.11 | 1.24 | 0.07 | 1.26 | 0.08 |
C40-1-1 | 9 | 1.01 | 0.16 | 0.99 | 0.23 | 0.99 | 0.19 | 0.99 | 0.09 | 0.99 | 0.19 | 1.00 | 0.17 |
C40-1-2 | 10 | 0.88 | 0.07 | 0.86 | 0.11 | 0.86 | 0.08 | 0.87 | 0.07 | 0.87 | 0.08 | 0.88 | 0.07 |
C40-2-1 | 7 | 0.98 | 0.12 | 0.99 | 0.16 | 0.97 | 0.13 | 0.93 | 0.07 | 1.00 | 0.10 | 1.01 | 0.10 |
C40-2-2 | 7 | 0.86 | 0.07 | 0.87 | 0.09 | 0.86 | 0.07 | 0.85 | 0.13 | 0.88 | 0.09 | 0.89 | 0.10 |
C50-1-1 | 10 | 0.86 | 0.23 | 0.83 | 0.22 | 0.85 | 0.22 | 0.87 | 0.25 | 0.85 | 0.22 | 0.86 | 0.23 |
C50-1-2 | 10 | 1.07 | 0.08 | 1.06 | 0.10 | 1.06 | 0.08 | 1.05 | 0.12 | 1.06 | 0.08 | 1.07 | 0.08 |
C50-2-1 | 5 | 1.20 | 0.04 | 1.25 | 0.06 | 1.20 | 0.04 | 1.10 | 0.05 | 1.22 | 0.04 | 1.22 | 0.04 |
C50-2-2 | 7 | 1.02 | 0.09 | 1.12 | 0.18 | 1.03 | 0.10 | 0.90 | 0.08 | 1.02 | 0.07 | 1.02 | 0.07 |
C60-1-1 | 8 | 1.06 | 0.13 | 1.03 | 0.17 | 1.04 | 0.15 | 1.03 | 0.09 | 1.04 | 0.15 | 1.05 | 0.14 |
C60-1-2 | 7 | 0.87 | 0.17 | 0.93 | 0.29 | 0.89 | 0.22 | 0.80 | 0.06 | 0.89 | 0.21 | 0.88 | 0.19 |
C60-2-1 | 6 | 0.86 | 0.13 | 0.96 | 0.22 | 0.87 | 0.14 | 0.74 | 0.04 | 0.86 | 0.10 | 0.86 | 0.09 |
C60-2-2 | 5 | 0.88 | 0.14 | 0.95 | 0.20 | 0.89 | 0.15 | 0.79 | 0.10 | 0.89 | 0.13 | 0.89 | 0.12 |
Sum | 115 | 0.97 | 0.17 | 0.98 | 0.21 | 0.96 | 0.18 | 0.93 | 0.17 | 0.97 | 0.18 | 0.98 | 0.17 |