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002438

2021-03-12

[EN] FAQ 004971 | I have selected all members available for design in RF‑/TIMBER Pro. Why…

Name: [EN] FAQ 004971 | I have selected all members available for design in RF‑/TIMBER Pro. Why…
Uploaded: 2021-03-12T00:00:00.000+01:00

Question:
I have selected all members available for design in RF‑/TIMBER Pro. Why are the tapered members not designed?

Answer:
Presumably, the "Stress point design also for rectangular and circular cross-sections" option in Details is activated.

Since the stress point design is not allowed for tapered members, this function must be deactivated, see the image.

If this option is to be considered despite the existing tapered cross-sections, the tapered members have to be designed in a separate design case.

Do you have any questions?

Events

2024-04-24

Online Training

RFEM 6 | Students | Introduction to FEM

2024-04-25

Stiffening Design in RFEM 6 Using Building Model

Webinar

Stiffening Design in RFEM 6 Using Building Model

2024-04-25

AISC 360-22 Steel Connection Design in RFEM 6

Webinar

AISC 360-22 Steel Connection Design in RFEM 6 (USA)

2024-04-30

Online Training

RFEM 6 | Students | Introduction to Timber Design

2024-05-02

Construction Stages in Membrane Structures with RFEM 6

Webinar

Construction Stages in Membrane Structures with RFEM 6

2024-05-08

Online Training

RFEM 6 | Students | Introduction to Reinforced Concrete Design

2024-05-08

$Cross-Section Modeling and \n Stress Analysis in RSECTION 1$

Webinar

Cross-Section Modeling and Stress Analysis in RSECTION 1

2024-05-15

Online Training

RFEM 6 | Students | Introduction to Steel Design

2024-05-16

Consideration of Construction Stages in RFEM 6

Webinar

Consideration of Construction Stages in RFEM 6

2024-05-23

Most Frequently Asked Questions Answered by Dlubal Support Team

Webinar

Most Frequently Asked Questions Answered by Dlubal Support Team | May 2024

2024-05-29

$Steel Structures in RFEM 6 \n Part 1: Modeling, Load Input$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 1: Modeling, Load Input

2024-06-06

$Steel Structures in RFEM 6 \n Part 2: Combinations, Design, Documentation$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 2: Combinations, Design, Documentation

Videos

Knowledge Base

KB 000694 | "Simplified" Vibration Design for EC 5

Length: 00:01:17 min

FAQ

FAQ 004977 | Can I consider a reduction of the stiffness according to the German regulation NCI ...

Length: 00:00:22 min

FAQ

[EN] FAQ 004971 | I have selected all members available for design in RF‑/TIMBER Pro. Why…

Length: 00:00:42 min

FAQ

[EN] FAQ 004969 | When performing the fire resistance design with TIMBER Pro, I get the error…

Length: 00:01:03 min

FAQ

[EN] FAQ 004942 | After the design was performed using RF‑/TIMBER Pro, I optimized a cross-section ...

Length: 00:00:44 min

Knowledge Base

KB 001669 | Lateral-Torsional Buckling in Timber Construction | Examples 2

Length: 00:02:15 min

FAQ

[EN] FAQ 004863 | Where can I adjust the effective length l-ef according to Table 6.1 of Eurocode 5 ...

Length: 00:00:24 min

FAQ

FAQ 004813 | How can I perform a stability analysis for a tapered member?

Length: 00:00:52 min

FAQ

FAQ 004626 | Can I design laminated veneer lumber with RFEM/RSTAB?

Length: 00:01:58 min

Playlist

Models to Download

Single-Span Beam with Lateral and Torsional Restraint and Without Intermediate Lateral Restraints

1911x

53x

Single-Span Timber Beam with Lateral and Torsional Restraint

3144x

114x

Timber Truss

5926x

185x

Building Made of Cross-Laminated Timber and Reinforced Concrete

7510x

123x

Truss Girders

281x

66x

Timber Frame Building

Model 004809 | Cross-Laminated Timber Building

330x

47x

Cross-Laminated Timber Building

361x

21x

Column-Beam Connection HEB 300

179x

19x

Timber Slab

Model 004717 | Ceiling with Line Releases

232x

26x

Ceiling with Line Releases

Knowledge Base Articles

With the RF-/TIMBER Pro add-on module, you can perform the vibration design known from DIN 1052 for the design according to EN 1995-1-1. In this design, the deflection under permanent and quasi-permanent action at the ideal one‑span beam may not exceed the limit value (6 mm according to DIN 1052). If you consider the relation between the natural frequency and the deflection for a hinged single-span beam subjected to a constant distributed load, the 6 mm limit value results in a minimum natural frequency of about 7.2 Hz.

The previous article, titled Lateral-Torsional Buckling in Timber Construction | Examples 1, explains the practical application for determining the critical bending moment M_crit or the critical bending stress σ_crit for a bending beam's lateral buckling using simple examples. In this article, the critical bending moment is determined by considering an elastic foundation resulting from a stiffening bracing.

The calculation of timber panels is carried out on simplified member or surface structures. This article describes how to determine the required stiffness.

The fundamental requirements of a structural system are (according to the basis of structural design) sufficient ultimate limit state, serviceability, and resistance. Structures must be designed in such a way that no damage occurs due to events such as the impact of a vehicle.

Product Features

Using the "Beam Panel" thickness type, you can model timber panel elements in 3D space. You just specify the surface geometry and the timber panel elements are generated using an internal member-surface construct, including the simulation of the connection flexibility.

Go to Explanatory Video

Feature 002585 | Fire Resistance Design of Surfaces for EN 1995 and SIA 265

You have the option to perform the fire resistance design of surfaces using the reduced cross-section method. The reduction is applied over the surface thickness. It is possible to perform the design checks for all timber materials allowed for the design.

For cross-laminated timber, depending on the type of adhesive, you can select whether it is possible for individual carbonized layer parts to fall off, and whether you can expect increased charring in certain layer areas.

Feature 002615 | Cross-Laminated Timber Manufacturer Library for USA, Canada, and Switzerland

Among others, the following cross-laminated timber manufacturers are available in the layer structure library:

Binderholz (USA)
KLH (USA, CAN)
Kalesnikoff (USA, CAN)
Nordic Structures (USA, CAN)
Mercer Mass Timber
SmartLam
Sterling Structural
Superstructures listed in Lignatec Edition 32 "Cross-Laminated Timber of Swiss Production"

By importing a structure from the layer structure library, all relevant parameters are adopted automatically. The library is continually updated.

The Timber Design add-on for RFEM 6 / RSTAB 9 is multi-purpose and combines a large number of additional elements. [*S16332764*] Timber Design Add-on for RFEM 6

Frequently Asked Questions (FAQ)

Can I use RFEM to calculate a log house three-dimensionally?

I would like to carry out the flexural buckling design for timber components with imperfections and internal forces according to the second-order analysis. Is it sufficient to activate this in Details of the RF‑/TIMBER Pro add-on module or is it necessary to make additional settings?

Can I design laminated veneer lumber with RFEM 5 or RSTAB 8?

When performing the fire resistance design with TIMBER Pro, I get Error 10001. How can I fix the error?

I have selected all the members available for design in RF‑/TIMBER Pro. Why are the tapered members not designed?

Can I consider a reduction of the stiffness according to the German regulation NCI NA.5.9 in TIMBER Pro?

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