Table 13 Comparison results of \(w_{{{\text{max}}}}^{{\text{t}}}\) from RC beams with 335 MPa–600 MPa steel bars with \(w_{{{\text{max}}}}^{{{\text{c1}}}}\) by the proposed methods.
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 | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
μ | δ | μ | δ | μ | δ | μ | δ | μ | δ | μ | δ | ||
335 MPa | 141 | 1.02 | 0.22 | 1.08 | 0.24 | 1.04 | 0.22 | 0.96 | 0.23 | 1.05 | 0.25 | 1.03 | 0.21 |
400 MPa | 85 | 0.94 | 0.20 | 0.91 | 0.22 | 0.95 | 0.21 | 1.01 | 0.21 | 0.92 | 0.20 | 0.94 | 0.20 |
500 MPa | 113 | 1.09 | 0.29 | 1.08 | 0.33 | 1.13 | 0.28 | 1.18 | 0.28 | 1.08 | 0.27 | 1.10 | 0.27 |
600 MPa | 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 |
Sum | 454 | 1.01 | 0.23 | 1.02 | 0.27 | 1.02 | 0.24 | 1.02 | 0.25 | 1.01 | 0.24 | 1.02 | 0.23 |