In RF-PUNCH Pro, you can perform the punching shear design on wall corners and wall ends. The basis for the design is the punching load, which is automatically determined from the RFEM internal forces in the connected surface. Since the surface internal forces from the RFEM calculation may be subject to the influence of singularity locations, this can also have a negative influence on the determined punching load at the wall corner or end. This article describes possible optimization options that you can use to minimize this unfavorable influence.
KB 001640 | Dealing with Singularities When Determining Loads in RF-PUNCH Pro
![Distribution of Principal Internal Force v_max, b in Floor Slab](/en/webimage/008616/2457095/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
![Input Table 1.5 Nodes of Punching Shear](/en/webimage/008809/814898/01-en.png?mw=512&hash=65e98cfe859ce35a3e3e9da47a0ef9335401520e)
![Design Level 1 - Ultimate Configuration](/en/webimage/044297/3619892/1_EN_-_Tragkonfig_lvl1.png?mw=512&hash=f430d843e4bdd5485ad13ab83926ac08ecee268b)
![Steel Fiber-Reinforced Concrete Slab](/en/webimage/041372/3534262/Modellbild_Stahlfaserbetonplatte_2.png?mw=512&hash=6ea606fd7627bc9cb2c12bf354831b59d98fe4b8)
![Feature 002828 | Fire Design of Slabs and Walls According to Simplified Table Method](/en/webimage/050837/3925042/50837.png?mw=512&hash=b06639a36ab8b62ab6d08e08552a5ec274469a37)
In the Concrete Design add-on for RFEM 6, you can perform the fire design of reinforced concrete slabs and walls according to the simplified table method (EN 1992‑1‑2, Section 5.4.2 and Table 5.8 and 5.9).
![Feature 002826 | Punching Shear Reinforcement](/en/webimage/050658/3936123/50658.png?mw=512&hash=ae20d4ca78cdf203a2c2d3ccbb7daa0f324da77a)
In the Concrete Design add-on, you have the option to define an existing vertically oriented punching shear reinforcement. This is then taken into account in the punching shear design.
![Feature 002801 | Punching Shear Design for All Section Shapes](/en/webimage/048276/3861250/2024-05-01_15-05-25.png?mw=512&hash=7732dd7fd2a19d53a9f6f77a35896a7c3676cff2)
Do you have individual column sections and angled wall geometries, and need punching shear design for them?
No problem. In RFEM 6, you can perform punching shear design not only for rectangular and circular sections, but for any cross-section shape.
![Feature 002691 | Simplified Fire Resistance Design for Columns and Beams According to EN 1992-1-2, Sections 5.3.2 and 5.6](/en/webimage/044608/3639258/44608_EN.png?mw=512&hash=11fe02254090f730dd1ed077d6012d8b839e5b1f)
In the Concrete Design add-on, you can perform the simplified fire resistance design according to Sections 5.3.2 and 5.6 of EN 1992‑1‑2 for columns and beams.
The following design checks are available for the simplified fire resistance design:
- Columns: Minimum cross-sectional dimensions for rectangular and circular sections according to Table 5.2a as well as Equation 5.7 for calculating time of fire exposure
- Beams: Minimum dimensions and center distances according to Table 5.5 and Table 5.6
You can determine the internal forces for the fire resistance design according to two methods.
- 1 Here, the internal forces of the accidental design situation are included directly into the design.
- 2 The internal forces of the design at normal temperature are reduced by the factor Eta,fi (ηfi), then used in the fire resistance design.
Furthermore, it is possible to modify the axis distance according to Eq. 5.5.