We provide hints and tips to help you get started with the basic program RFEM.
KB 000565 | Consideration of the net cross-section for tensile stress according to EN 1993-1-1
Video
First Steps with RFEM
Description
When connecting tensile stresses structural components with bolted connections, it is necessary to consider the cross-section reduction due to the bolt holes in the ultimate limit state design. The following article describes how is it possible to perform the tension resistance design according to EN 1993‑1‑1 with the net cross-section area of a tension member in the RF‑/STEEL EC3 add-on module.
Keywords
Dlubal Knowledge Base tension design Net cross -section Outcrossing Hole weakening Dlubal KB Knowledge Base Technical Contribution
Links
Write Comment...
Write Comment...
Contact us
Do you have any questions about our products or need advice on selecting the products needed for your projects?
Contact us via our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.
![[ZH] CP 001195 | Escalator trusses for commercial complexes in China](/-/media/Images/netgenium/thumbnails/2/9/6/9/0/2969057/2969057.png?la=en&mw=348&mlid=778F6A831FED4D2FA656FFF961A20361&hash=9EBB4DACB9DBE807C4A4A63A03C40211819DA585)
![[CS] CP 001192 | Spiral Staircase with Glass Steps, Zlín, Czech Republic](/-/media/Images/netgenium/thumbnails/2/9/6/6/5/2966590/2966590.png?la=en&mw=348&mlid=A3AF70BD148D40BC871A91395A99FC76&hash=A0371D9F4C5E5E1B1AC08733FFB0860C74010AD1)
![[DE] CP 001193 | Hobro Arrest Prison Scaffolding, Denmark](/-/media/Images/netgenium/thumbnails/2/9/6/6/6/2966608/2966608.png?la=en&mw=348&mlid=009873CC759B413CAB8A477C624F3044&hash=9826E281910961C92AA70555B9AF5B125FAC9FB8)
![[CS] CP 001194 | Renovation of an Existing Water Tower into an Office Building](/-/media/Images/netgenium/thumbnails/2/9/6/6/6/2966620/2966620.png?la=en&mw=348&mlid=2D4F0809D4D4457F82F841389157725E&hash=4F5308A0503F5C81B836C2A45F8DE998081E698C)
![[DE] CP 001189 | Look-out Tower in Schömberg](/-/media/Images/netgenium/thumbnails/2/9/6/5/0/2965002/2965002.png?la=en&mw=348&mlid=62B05CD6235E41289EA19C2D3FD285E3&hash=A996237267508581E081D67AC7D56DAF046A677A)
![[FR] CP 001178 | Marie Curie School’s Timber and Steel Structures Preliminary Design in Fontoy, F...](/-/media/Images/netgenium/thumbnails/2/9/6/4/5/2964550/2964550.png?la=en&mw=348&mlid=FCDA24F16FEA4C37B9C54EC1BE1CC0F0&hash=CD71136B40880208526D95E99B420ADD074FFB17)
New
Consideration of the net cross-section for tensile stress according to EN 1993-1-1
When connecting tension -loaded components with bolted connections, the cross -section weakening due to the bolt holes must be considered in the ultimate limit state design. The following article describes how the design of the tension resistance according to DIN EN 1993-1-1 can be performed with the net cross-section area of the tension member in the RF-/STEEL EC3 add-on module.
![Distribution of Forces and Moments in Column Base According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009638.png?la=en&mlid=7D34CEAAE7354583A29169095622B515&hash=D5A1CD829CEAC6F92DF0C68F3F0F37A7E0C0E89B)
![System and Loading According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009634.png?la=en&mlid=F0F0A23924B8424CA1C2905961DF676B&hash=6AC023A421BDDF6BFE2AC5D69132D2F81A0C365A)
SHAPE-THIN | Cold-Formed Sections
SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.
The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.
As an option, you can perform an iterative calculation to optimize the effective cross-section.
You can display the effective cross-sections graphically.
Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.
- I have just noticed that the STEEL EC3 add-on module also calculates with γM0 = 1.0 when designing a tension member, although it should actually be γM2 = 1.25. How can I perform the design correctly?
-
How can I perform the stability analysis for an edgewise supported flat steel, for example 100/5, in RF-/STEEL EC3?
Although the cross-section is rotated by 90 ° in RFEM/RSTAB, it is displayed lying flat in RF-/STEEL EC3. - How are the signs to be interpreted for the releases, results of line releases and line hinges?
- How can I create a curved or curved section?
- How is the rotational stiffness of a buckling stiffener determined in FE-BUCKLING?
- How are hot -dip galvanized components considered for fire protection in the Steel EC 3 add -on module?
- In RF-/STEEL EC3, is the "Elastic design (also for cross-section class 1 and 2)" option under "Details → Ultimate Limit State" considered for the stability analysis when activated?
- How can I get the member end forces to design the connections?
- I would like to calculate and design "temporary structures." What do I need for this?
- How can I create a drilled beam in RFEM?
