Complete guidelines for predicting crack widths in such cases do not exist, and the influence of large rebars and covers on the cracking behaviour of RC structures is still not clear. This is not the case for more complicated structural elements with large reinforcing bars (rebars) and covers, such as shear walls, two-way bearing slabs and shells typically occurring in large-scale concrete structures. ![]() Calculation methods for predicting crack widths in one-way bearing structural elements have been developed for several decades and are relatively straightforward in use for design of conventional RC ties, beams and slabs. ![]() Crack widths exceeding the requirements can impair the functionality of a structure, limit its use and even reduce the service life. Predicting crack widths in reinforced concrete (RC) structures is important for Serviceability Limit State (SLS) design.
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