Concrete creep depends on the following properties:
- Size and duration of the load (deformation increases with the duration)
- Water-cement ratio, w/c ratio (deformation increases with the higher w/c ratio)
- Type of aggregate (deformation decreases with the stiffness of an aggregate)
- Degree of hardening at the loading start
When designing reinforced concrete components according to EN 1992‑1‑1 , nonlinear methods of determining internal forces for the ultimate and serviceability limit states are possible. The internal forces and deformations are determined by considering the nonlinear internal forces-deformation behavior. The calculation of stresses and strains in the cracked state usually results in deflections that are significantly higher than the values determined linearly.
Distribution of Vertical Soil Stresses and Related Settlement under Uniformly Distributed Load from 
Window '1.1 General Data' for Serviceability Limit State with Settings for Nonlinear Calculation According to 
The material model Orthotropic Masonry 2D is an elastoplastic model that additionally allows softening of the material, which can be different in the local x- and y-direction of a surface. The material model is suitable for (unreinforced) masonry walls with in-plane loads.
- How are the signs for the release results of a line release and line hinges interpreted?
- How can I create a curved or arched section?
- Is it possible to manually specify a longitudinal reinforcement for design in RF‑PUNCH Pro?
- Can I simulate the cracked state of a concrete cross-section for a bending beam with the "Isotropic Nonlinear Elastic 1D" material model?
- Why is the deflection of the reinforced concrete floor sometimes greater when selecting a larger basic reinforcement?
- How can I view the depth of the concrete compression zone in RF‑/CONCRETE?
- I have a question about the message No. 47 in RFEM. What is the exact meaning of the word "integrate"? What is the resulting effect?
If I do not specify any basic reinforcement in RF‑CONCRETE Surfaces, I obtain the value X as an additionally required reinforcement. If I enter this value X as the provided 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?
- How can I get the member end forces to design the connections?
Design of reinforced concrete members and surfaces (plates, walls, planar structures, shells)
Analytical deformation analysis of plate structures consisting of reinforced concrete
Physical and geometrical nonlinear calculation of beam and plate structures consisting of reinforced concrete
Linear and nonlinear analysis of reinforced concrete members with reinforcement concept
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions