1004x

2019-04-08

Question

Q: Why is the cut-to-grain angle not taken into account when designing a tapered beam?

You have probably carried out the design in RF&#8209;/TIMBER Pro according to DIN 1052:2008 and used a cut-to-grain angle of less than 3° (see Image 01). According to Section 10.4.1 (1) of DIN 1052, such a cut-to-grain angle should not be considered. If you switch the design to the current DIN EN 1995 (see Image 02), the design will also be carried out for an angle of less than 3°.Furthermore, the module allows you to analyze transversal tension stress in the apex, and so on, according to Section 6.4.3 ff. of the Eurocode. This procedure is explained in detail in this webinar.

Why is the cut-to-grain angle not taken into account when designing a tapered beam?

Answer:

You have probably carried out the design in RF‑/TIMBER Pro according to DIN 1052:2008 and used a cut-to-grain angle of less than 3° (see Image 01). According to Section 10.4.1 (1) of DIN 1052, such a cut-to-grain angle should not be considered. If you switch the design to the current DIN EN 1995 (see Image 02), the design will also be carried out for an angle of less than 3°.

Furthermore, the module allows you to analyze transversal tension stress in the apex, and so on, according to Section 6.4.3 ff. of the Eurocode. This procedure is explained in detail in this webinar.

Cut-to-Grain Angle alpha

Selecting Standard

Do you have any questions?

Events

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

2024-06-20

Webinar

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

Videos

Product Feature

Fire Resistance Design of Surfaces for EN 1995, SIA 265, NDS, and CSA O86

Length: 00:00:56 min

Event

Webinar | Timber Floor Calculations in RFEM 6

Length: 00:55:27 min

Event

RFEM 6 for Students | Introduction to Timber Design | November 29, 2023

Length: 01:10:03 min

Product Feature

Cross‑Section Optimization

Length: 00:00:56 min

FAQ

FAQ 005410 | How is the equivalent dimension calculated for round section in the Timber Design ad...

Length: 00:00:28 min

Event

Webinar | Introduction to RFEM 6 and RSTAB 9 | Part 2: Combinatorics, Design, Documentation

Length: 01:01:40 min

Event

Webinar | Member and Surface Design of Timber Components in RFEM 6

Length: 01:10:01 min

Knowledge Base

KB 001819 | Deflection Analysis of Member Elements

Length: 00:04:18 min

Product Feature

Design of Laminated Veneer Lumber (LVL) Members According to EN 1995-1-1

Length: 00:00:45 min

Playlist

Models to Download

340x

80x

Timber Frame Building

Model 004809 | Cross-Laminated Timber Building

351x

53x

Cross-Laminated Timber Building

194x

23x

Timber Slab

Model 004717 | Ceiling with Line Releases

242x

26x

Ceiling with Line Releases

Model 004707 | Office Building of Municipal Works in Kirchheim unter Teck, Germany

266x

Office Building Timber Structure with Reinforced Concrete Elements

465x

Timber Industrial Hall Siegrist Igor Carpenteria

450x

50x

Trussed Roof

469x

58x

Timber-Concrete Building

634x

51x

Timber Column Base

Knowledge Base Articles

Influence of Duration of Action on Design Value of Strength

In addition to determining loads, some particularities concerning the load combinatorics in timber design have to be considered. Contrary to steel structures, where the largest loading results from all unfavorable actions, in timber construction, the strength values depend on the load duration and timber humidity. Special characteristics have to be considered as well for the serviceability limit state design. The following article discusses the effects on the design of wooden elements and how this is possible with RSTAB and RFEM.

KB 001848 | Timber Column Design as per the 2018 NDS Standard in RFEM 6

Using the Timber Design add-on, timber column design is possible according to the 2018 NDS standard ASD method. Accurately calculating timber member compressive capacity and adjustment factors is important for safety considerations and design. The following article will verify the maximum critical buckling strength calculated by the Timber Design add-on using step-by-step analytical equations as per the NDS 2018 standard including the compressive adjustment factors, adjusted compressive design value, and final design ratio.

KB 001825 | WebService & API for Analysis of Construction Stages

When calculating regular structures, data input is often not complicated but time-consuming. Input automation can save valuable time. The task described in the present article is to consider the stories of a house as single construction stages. Data is entered using a C# program so that the user does not have to enter the elements of the individual floors manually.

Our webservice offers users the opportunity to communicate with RFEM 6 and RSTAB 9 using various programming languages. Dlubal's high-level functions (HLFs) allow you to expand and simplify the WebService's functionality. In line with RFEM 6 and RSTAB 9, using our WebService makes the engineer's work easier and faster. Check it out now! This tutorial shows you how to use the C# library by means of a simple example.

Screenshots

Cut-to-Grain Angle alpha

Selecting Standard

Selection of Creep Coefficient

RFEM Model of Palazzo Meridia Office and Retail Building in Nice, France | © Architecture-Studio

Tower Structure with Wind Load Generation in RFEM 6

Timber Structure with Wind Load Generation in RFEM 6 | © STATIC Solution s.r.o

Exterior View of Gym | © KL-Architectes

The construction of a gym in Metz | © KL-Architectes

Definition of Timber Panel Element

Deformations of Gym Structure

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)

Why is the cut-to-grain angle not taken into account when designing a tapered beam?

How can I generate an area load on members via cells in RFEM 6 or RSTAB 9?

Which programs do I need for laminate and sandwich structures, or cross-laminated timber (CLT)?

Which Dlubal Software programs can I use to calculate and design timber structures?

How can I connect surfaces to other surfaces or members in a hinged/semi-rigid way?
What are Line Hinges and Line Releases?

How is the dimension for an equivalent round section calculated in the Timber Design add-on?

Recommended Products for You

RFEM 6 | Main Program RFEM 6

RFEM 6

Main Program

The new generation of 3D FEA software is used for the structural analysis of members, surfaces, and solids.

Price of First License 4,170.00 USD

RFEM 6 | Design

Timber Design for RFEM 6

Add-On

The Timber Design add-on performs the ultimate, serviceability, and fire resistance limit state design checks of timber members according to various standards.

Price of First License 1,930.00 USD

RFEM 6 | Additional Analysis

Structure Stability for RFEM 6

Add-On

The Structure Stability add-on performs stability analysis of structures. It determines critical load factors and the corresponding stability modes.

Price of First License 1,300.00 USD

RSTAB 9 | Main Program RSTAB 9

RSTAB 9

Structural Frame and Truss Analysis Software

Main Program

The modern 3D structural analysis and design program is suitable for the structural and dynamic analysis of beam structures as well as the design of concrete, steel, timber, and other materials.

Price of First License 2,910.00 USD

RSTAB 9 | Design

Timber Design for RSTAB 9

Add-On

The Timber Design add-on performs the ultimate, serviceability, and fire resistance limit state design checks of timber members according to various standards.

Price of First License 1,930.00 USD

RX-TIMBER 2 | Timber Structures

RX-TIMBER Glued-Laminated Beam 2