RF-CONCRETE Members – Online Manual Version 5

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RF-CONCRETE Members – Online Manual Version 5

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4.1.2 Serviceability


Figure 4.2 Details dialog box, Serviceability tab
Design Situation Settings for Serviceability Limit State Checks

By selecting the check boxes in the table, you can decide which serviceability limit state designs are performed in the individual design situations. Thus, it is possible to calculate different limit values per design situation directly in a concrete case. For example, with the settings shown in Figure 4.2, the program will analyze the crack widths wk only with loads of the Frequent and Quasi-Permanent design situations.

Click the [Info] button to display information describing the requirements the limit values of the serviceability limit state designs are based on.

Figure 4.3 Information dialog box

Use the [Select or Clear All for Selected Line] button to quickly activate or suppress all checks for a particular design situation.

Design of Crack Width Control

After selecting the Crack width control for σc,I.Ed < fct,eff,wk check box, the crack width analysis will also be performed on the locations where the concrete's effective tensile strength fct,eff,wk is not reached.

Deformation relative to

The two options control whether the maximum deformations are related to the Shifted members ends or set of members end (connection line between start and end nodes of deformed system) or to the Undeformed system. Generally, the deformations have to be designed relative to the displacements in the entire structural system.

An example of the relation of member deformations can be found in the following article: