![]() ![]() This is also the reason that both designs are active by default. This may result in the required reinforcement determined in the course of the direct calculation not being the most economical reinforcement. ![]() This means that not all parts of the indirect calculation have to be fulfilled if it is ensured at the same time that the minimum reinforcement is met. The steel stresses are usually determined on the basis of cracked cross-sections under the governing action combination. The conditions according to Table 7.2N or Table 7.3N are met for cracks due to predominantly direct actions. In this case, you have to use the value immediately after cracking for the steel stress (for example, use σ s in Equation ). The reason for this option is as follows.Īccording to DIN EN 1992 7.3.3 (2), exceeding the crack widths is unlikely if the minimum reinforcement according to 7.3.2 is met, and at the same time,įor cracks due to predominant restraint, the member diameter according to Table 7.2N is observed. The "Find the most economical reinforcement for crack width design" option is available in RF-CONCRETE Members and RF-CONCRETE Surfaces. ![]() Find an Economical Reinforcement for Crack Width Design ![]()
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