For design with CONCRETE NL, is the creep applied to the entire cross-section, or to the concrete compression zone only?
Answer
In the case of a calculating in RF‑CONCRETE NL, the creep is applied as a reduction of the elastic modulus of of the concrete in the compression zone of the cross-section.
For more information about the differences between the analytical and nonlinear deformation analysis in RF‑CONCRETE Members and RF‑CONCRETE Surfaces, see the technical articles under the links below.
Keywords
Creep Concrete compression Compression zone Compression Compression depth
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If I do not specify any basic reinforcement in RF-CONCRETE Surfaces, I get the value X as additionally required reinforcement. If I enter this value X as the existing basic reinforcement, I correctly do not get any additional required reinforcement.
However, if I enter a lower value than the determined required total reinforcement as the basic reinforcement, the additionally required reinforcement is increased in such a way that the originally required reinforcement content is exceeded. Why? - Why does the RF-CONCRETE Surfaces add-on module not increase the amount of reinforcement until the SLS designs have a design ratio of 1.0?
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