FAQ 004931 EN

Helpful Questions & Answers

  • Frequently Asked Questions (FAQs)

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?

Answer

The automatic increase of the reinforcement for the SLS is based on the assumption of a lever arm, as it is also used for the ULS design. However, increasing the lever arm may change it. This occurs especially if the required reinforcement is applied with a different diameter than for the ULS, or is placed in a different position.

At the end of the calculation, however, the add-on module performs another design with the automatically designed reinforcement. In this design, the actual position of the reinforcement is considered. This can usually lead to a slight exceeding.

Since the ratio is set to one decimal place according to the default setting, the exceeding may have a more dramatic effect than it is. In the add-on module, you can also set two decimal places under "Settings" → "Units and Decimal Places..."

Keywords

Serviceability SLS Longitudinal reinforcement

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  • Updated 5 April 2021

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RFEM Concrete Structures
RF-CONCRETE 5.xx

Add-on Module

Design of reinforced concrete members and surfaces (plates, walls, planar structures, shells)

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