FAQ 004892 EN-US

Helpful Questions & Answers

  • Frequently Asked Questions (FAQs)

Why do I get such a small amount of reinforcement for the upstand beam? The amount of reinforcement for the downstand beams is significantly larger.

Answer

While Member 1 is an upstand beam, Member 2 is a downstand beam. This results in a compression axial force for Member 1, and a tensile force for Member 2.

For the concrete design, a compressed cross-section is more favorable than a tensioned cross-section. For comparison purposes, here are the axial forces of the members:

Image 01 - Results of Axial Force

Now, if you deactivate the axial forces for the design in RF‑CONCRETE Members, the result is a required reinforcement that is affine to the moment distribution:

Image 02 - Deactivating Axial Force

With this setting, you are on the safe side for Member 1, but on the unsafe side for Member 2.

Keywords

Upstand beam Downstand beam Design Amount of reinforcement

Downloads

Write Comment...

Write Comment...

  • Views 348x
  • Updated 02/26/2021

Contact us

Contact Dlubal

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

(267) 702-2815

info-us@dlubal.com

Online training | English

Eurocode 2 | Concrete structures according to DIN EN 1992-1-1

Online Training 07/29/2021 8:30 AM - 12:30 PM CEST

Online Training | English

RFEM for Students | USA

Online Training 08/11/2021 1:00 PM - 4:00 PM EDT

Blast Time History Analysis in RFEM

Blast Time History Analysis in RFEM

Webinar 05/13/2021 2:00 PM - 3:00 PM EDT

Dlubal Info Day

Dlubal Info Day Online | December 15, 2020

Webinar 12/15/2020 9:00 AM - 4:00 PM BST

FEA Troubleshooting and Optimization in RFEM

FEA Troubleshooting and Optimization in RFEM

Webinar 11/11/2020 2:00 PM - 3:00 PM EDT

Soil-Structure Interaction in RFEM

Soil-Structure Interaction in RFEM

Webinar 10/27/2020 2:00 PM - 2:45 PM BST

ACI 318-19 Concrete Design in RFEM

ACI 318-19 Concrete Design in RFEM

Webinar 08/20/2020 2:00 PM - 3:00 PM EDT

How to Be More Productive Using RFEM

How to Be More Productive Using RFEM

Webinar 07/07/2020 3:00 PM - 4:00 PM CEST

Introduction to Solid Modeling \n in RFEM

Introduction to Solid Modeling in RFEM

Webinar 06/30/2020 2:00 PM - 3:00 PM EDT

Modeling with Solids in RFEM

Modeling with Solids in RFEM

Webinar 06/09/2020 3:00 PM - 3:45 PM CEST

CSA A23.3 Concrete Design in RFEM

CSA A23.3:19 Concrete Design in RFEM

Webinar 05/14/2020 2:00 PM - 3:00 PM EDT

Plate and Shell Modeling \n in RFEM - Part 2

Plate and Shell Modeling in RFEM - Part 2

Webinar 02/26/2020 3:00 PM - 4:00 PM

Plate and Shell Modeling in RFEM - Part 1

Plate and Shell Modeling in RFEM - Part 1

Webinar 01/29/2020 3:00 PM - 4:00 PM

CSA O86:14 CLT Design in RFEM

CSA O86:14 CLT Design in RFEM

Webinar 11/06/2019 3:00 PM - 4:00 PM

ADM 2015 Aluminum Structure Design in RFEM

ADM 2015 Aluminum Structure Design in RFEM

Webinar 09/24/2019 3:00 PM - 4:00 PM

Webinar 3: BIM Integration \n and RFEM

Webinar 3: BIM Integration and RFEM

Webinar 08/20/2019 3:00 PM - 4:00 PM

Advanced Modeling Features in RFEM

Webinar 2: Advanced Modeling Features in RFEM

Webinar 07/31/2019 3:00 PM - 4:00 PM

Webinar 1: Introduction to the FEA Program RFEM

Webinar 1: Introduction to the FEA Program RFEM

Webinar 06/18/2019 3:00 PM - 4:00 PM

ASCE 7-16 Response Spectrum Analysis in RFEM

ASCE 7-16 Response Spectrum Analysis in RFEM

Webinar 05/22/2019 3:00 PM - 4:00 PM

Tensile Membrane Structure Design in RFEM

Tensile Membrane Structure Design in RFEM

Webinar 02/20/2019 3:00 PM - 4:00 PM

}
RFEM
EC2 for RFEM

Module Extension for RFEM

Extension of the modules for reinforced concrete design by the Eurocode 2 design

Price of First License
360.00 USD
RFEM
RF-CONCRETE

Add-on Module

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

Price of First License
810.00 USD
RFEM
RF-CONCRETE Deflect

Add-on Module

Analytical deformation analysis of plate structures consisting of reinforced concrete

Price of First License
400.00 USD
RFEM
RF-CONCRETE NL

Add-on Module

Physical and geometrical nonlinear calculation of beam and plate structures consisting of reinforced concrete

Price of First License
1,300.00 USD