#### Further Information

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• ### Is it possible to evaluate deformations and internal forces of hinges?

New FAQ 003224 EN-US

For the RFEM Version 5.17, there is a graphical output (only for line hinges and line releases) and a table output. The latter can be found in the following tables:

• 4.45 Line Hinges - Deformations
• 4.46 Line Hinges - Forces
• 4.47 Member Hinges - Deformations
• 4.48 Member Hinges - Forces
• 4.49 Nodal Releases - Deformations
• 4.50 Nodal Releases - Forces
• 4.51 Line releases - deformations
• 4.52 Line Releases - Forces

• ### By which length is the boundary line compensation distributed in the surface?

New FAQ 003223 EN-US

The program does not define a fixed length for distributing the boundary line compensation. Rather, the compensation is defined at the boundary line nodes and reacts in conjunction with the integral flattening depending on the geometry and stiffness.

In the calculation, the integral flattening considers all compensatory strains on the surface and on the edges with the strains of flattening itself.

Deformation Process

• ### Is it possible to read values from the table in order to use them for parametric input?

New FAQ 003222 EN-US

With the entry "& refcell" with the syntax "$table number (cell description)", you can select values from the table. Figure 4.01 shows a member with a length of 4.20 m. The length is shown in Table "1.17 Members" in cell L1. This value can now be used in the parameter list or the formula editor. For this, use the following formula for the system shown in Figure 01:$1.17 (L1)

Reading cells from the results table is not possible because of the circularity.

• ### How can I find a shape found with RF form-finding?

New FAQ 003221 EN-US

This requires the RF-CUTTING-PATTERN RFEM add-on module. This calculates and organizes cutting patterns for membrane structures. The boundary conditions of the cutting patterns on the curved geometry are determined by the boundary lines and independent plane or geodesic cutting lines. For detailed information, see the links below and the videos.

• ### I get the error message HASP_UPDATE_TOO_OLD when trying to import an update for our network dongle. What can I do?

New FAQ 003220 EN-US

This error is displayed when you try to import an update which is older than the last imported update.

First, check in the Admin Control Center at http://localhost:1947 in Features if the modules you have purchased are already available.
Provided that not all of the purchased modules are available, please follow the instructions below:

Network dongle (hardware dongle):

Please send us the c2v file, which you can create with the RUS tool, see:

https://www.dlubal.com/en-US/support-and-learning/support/faq/001479

Network dongle (softlock):

Please send us the c2v file, which you can create directly in the Admin Control Center, see:

https://www.dlubal.com/en-US/support-and-learning/support/faq/002726

• ### What is meant by the Brickwork Class in the material library for masonry according to EN 1996-1-1?

New FAQ 003219 EN-US

Depending on the geometric requirements of the bricks, these are integrated into classes 1 - 4. All geometric requirements for the brick classes are listed in Table 3.1 of the EN 1996-1-1. An example of assigning the classes according to the total percentage of the brick holes (% of the gross volume) is as follows:

Class 1 (all stones)
≤ 25

Class 2
vertical hole ratio> 25; ≤ 55

Class 3
vertical hole ratio ≥ 25; ≤ 70

Class 4
horizontal hole ratio> 25; ≤ 70

• ### Where is it possible to define the reference height for the reduction factors of the snow load according to SIA 260?

New FAQ 003218 EN-US

The reference height can be defined in the factors for the standard SIA 260. They are set in the general data (see Figure 01). The desired reference height is available in the "Combination Factors" tab.

• ### How is the Yielding Process taking compensation into account in the determination of the cutting patterns?

New FAQ 003216 EN-US

The planarization process in the RF-CUTTING-PATTERN module is an iterative process that levels the respective cutting regions by minimizing the distortion energy assuming an assigned material behavior.

Simplified, the method compresses the initial geometry in a press under the assumption of a friction-free contact until the stresses from the flattening are in equilibrium with each other.

→ See Video

As this process covers the complete mechanical system of the curved structural component, you can additionally consider the compensation directly as a applied strain load.

Since the strains from the compensation specification interact with the strains from the planarization in the RF-CUTTING-PATTERN Algorithm, this type of compensation consideration is not to be compared with the usual, planar scaling of uncompensated blanks. The consideration of the complete "cutting mechanism" with all strain terms promises a very high-quality geometry.

Before the flattening, the integral flattening process defines a coordinate system (warp and weft direction) from the mean orientation of the FE elements and uses the initially defined coordinate system to describe the compensation strain and stiffness, independent of the respective position of the FE elements in the coordinate system orientation. Thus, the comparison shown in the video is only valid for an isotropic linear elastic membrane model.

• ### What does "Mortar Joint" mean if using "Masonry"as material with the standard 1996-1-1?

New FAQ 003215 EN-US

Edge-strand bonding is applied when the bricks of a wall are not laid on one mortar strip but on two. Apply the mortar to the outer edges of the bearing surfaces of the bricks.

The application of the National Annex is governed by the question whether you can apply boundary strip bonding in a European country. The construction of masonry by edge strip cementing is excluded in the German National Annex. For this reason, the foundation joints in Germany must always be mortared over the entire surface.

• ### How do I edit an image in the printout report to make the color or profile scale text readable while not covering the image?

New FAQ 003213 EN-US

You can edit the text size in Image Properties → Color Scale → with Text Factor. Frame size can be adjusted relatively or absolutely. If the frame is larger and covers part of the image, adjust the edges to move the image.

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