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220.127.116.11 Check of rebar diameter
Check of rebar diameter
The rebars' limit diameter max ds is checked according to EN 1992-1-1, Equation (7.6N) (see Equation 2.72).
At the top side of the plate, the program determines the maximum bar diameter d*s,-z,φ1 of the first reinforcement direction depending on the stress available in this direction. In the check for the limitation of the steel stress, this stress was calculated as σ*s,-z,φ1 = 208.18 N/mm2. Together with the selected crack width wk = 0.3 mm, the following maximum bar diameter d*s,-z,φ1 is obtained in Table 7.2N by interpolation:
The maximum bar diameter d*s,-z,φ2 for reinforcement direction 2 is analogously determined from the tension stress σ*s,-z,φ2 = 167.09 N/mm2 and the crack width wk = 0.3 mm:
With the limit diameters d*s for the two reinforcement directions and the respective steel stresses, the maximum bar diameters ds are determined.
For both reinforcement directions, rebar diameters ds = 12 mm are respectively provided. Thus, the check criterion for the governing reinforcement direction φ1 is obtained as: