Support articles

What values do I input for the Bearing Capacities A1 and A2 soil parameters for a pad base?

Question What values do I input for the Bearing Capacities A1 and A2 soil parameters for a pad base?   Answer Principles for pad base design in Tekla Structural Designer Some of the principles on which the current pad base design in Tekla Structural Designer is based on are as follows: GEO combinations are only used for the bearing capacity design; - This is because EC7 2.4.7.1 (1)P states that this a ULS for “- failure or excessive deformation of the ground (…​)". All pad base checks are ​performed to STR combinations. The designer ​has ​control​ over​ the bearing capacity resistance values
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • Bearing capacity
  • A1
  • A2
  • STR
  • GEO
  • Soil Parameters
  • pad
  • Pad base

What does the Edit ribbon tab > Rationalize command do?

Question We note that Tekla Structural Designer Service Pack 1 (17.0.1.41) has added a new Rationalize command. What does it do?   Answer See the example below for details of how the Rationalize command works Example From the two screenshots below; Is an unused construction line Is an unused gridline Are three gridlines that are longer than necessary Is a frame that exists on an unused gridline and hence the frame is not being utilised.     By running the Edit ribbon tab > Rationalize command you can remove some of these unused items and tidy up the arrangement of grid lines/
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • Rationalize
  • Delete
  • unused
  • remove
  • shrink
  • extend
  • tidy

How do I change a single span beam into a multi-span beam?

When you model a beam in Tekla Structural Designer you need to keep in mind that you are defining the beam and its physical support points. You therefore need to place the beam and also assign any support locations at the same time. 1. Is this beam correctly modelled as a continuous beam?   You can use Scene Content to show the element Direction arrow on the Members   Notice that this beam only has one element direction arrow displayed at the centre point of the beam (drawn from End 1 - start to End 2 - finish). This tells us that the beam has only one span and therefore is supported at
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by Trimble Solutions UK
4
  • single
  • multiple
  • joining
  • splitting
  • combining
  • separating

Why are there no lateral deflections after running a gravity design?

Within the Home ribbon tab > Settings> Design options - General page, there is a check box entitled "Fix column nodes horizontally".    This settingis also found in Model settings via the Design ribbon tab > Options - General > Gravity Design.  The setting must be changed here for existing models. If this option is checked then column nodes will be restrained from moving laterally when a Design (Gravity) command is run. The reason for this option is that the Engineer may wish to obtain preliminary sizing of elements under gravity loadings but is not yet ready to add a lateral
Requires Tekla Maintenance
by Trimble Solutions UK
5
  • no lateral deflection
  • deflection
  • fix column nodes horizontally
  • fix

Why can I not see results for lateral loadcases after running a design?

If Non-linear elements (i.e. tension only bracing) exist in your model, then lateral loadcases will not be solved in isolation as part of the design process by default. This is because it can be difficult for the solver to find a solution since there are no other loads to counteract them. You can change the default behaviour and elect to run the lateral loadcases as part of the design if you wish, by going to theDesign ribbon tab > Options> Analysis page and checking the "Solve lateral loadcases in isolation......" box.   
Requires Tekla Maintenance
by Trimble Solutions UK
2
  • lateral
  • load case
  • loadcase
  • no results

Why are there limits for 1D element length and 2D element quality?

A member, such as a beam, may be composed of a number of analysis (or solver) elements .  These are termed 1D elements in TSD.  For example, if you have a primary beam which supports, say, two secondary beams, then it will be formed from three 1D analysis elements; each analysis element being between the start/end of the member and the secondary beam connection points.  The connection points and the ends of the primary beam will be ‘nodes’ or ‘joints’ in the analysis model. Essentially this is true of any commercial analysis program, not just Tekla’s. If you are not familiar with this concept
Requires Tekla Maintenance
by Trimble Solutions UK
5
  • Analysis element too short
  • limit
  • ill-conditioning
  • very short
  • poor quality
  • distorted

Tekla Structural Designer 2016i Service Pack 4

This release will upgrade your Tekla Structural Designer 2016i installation to Tekla Structural Designer 2016i Service Pack 4 version number 16.1.4.94 and should be installed to ensure optimum function of the program.   It includes a number of enhancements and issue resolutions as detailed below (a number of more minor fixes are not listed). If you are updating from a version earlier than Tekla Structural Designer 2016i SP3 (version 16.1.3.91) you can find details of enhancements and fixes included in all previous releases in Tekla User Assistance (TUA) and Tekla Downloads.  You will find all
by Tekla Structural Designer Development Team
0

Where has the Steel + command gone?

Question I have just updated to Tekla Structural Designer Service Pack 1 and notice that the Steel + command has disappeared from the ribbon. How can I get it back? Answer We have rationised the Show\Alter State group and placed common commands under a single command called the Show/Alter State command at the end of the ribbon group Old Location The Steel + command up to and including Tekla Structural Designer v17.0.0.37 was accessible directly from the Review ribbon tab > Show\Alter State group. You could then define the Characteristic to work with, the Material type and the Parameter (
Requires Tekla Maintenance
by Trimble Solutions UK
5
  • Steel plus
  • steel
  • Steel +
  • dissapeared
  • Show\Alter
  • Grade

How do the Property Window options work when using the Review view > Show/Alter State command?

In this article we will look at how the Show\Alter State command - Property Window options work, by running through an example using the [A]ttribute "Autodesign".   Options [M]ode You now have three modes of operation, Toggle, On and Off. Toggle, switches the state between the available options i.e. On or Off when selecting an item  i.e. each time you select the item it will change to the next state. In the case of Autodesign this would toggle between On and Off. Set On, allows you to only define the state as being On. This allows box selections etc. to be applied more easily. Any item
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by Trimble Solutions UK
0
  • [M]ode
  • [A]ttribute
  • Filter
  • Scene
  • Show/Alter State
  • Show \ Alter State

I have updated to Tekla Structural Designer 2017 SP1 (v17.0.1.41) and many of the commands on the Review ribbon tab, Show\Alter State group have disappeared. How do I get them back?

Issue Show\Alter State Group PRIOR to Tekla Structural Designer 2017 SP1   Show\Alter State Group AFTER updating to Tekla Structural Designer 2017 SP1 There are a few commands that have disappeared from the Show\Alter State group. Restrained\Unrestrained Braced\Bracing Fixed\Pinned Steel Punch Check Position Gravity Only   There is a new command Show/Alter State   Resolution The Show/Alter State Command The new Show/Alter State command has combined the functionality of all the individual missing commands. Once the Show/Alter State command is invoked the Properties Window > General [A]
Requires Tekla Maintenance
by Trimble Solutions UK
5
  • Show\Alter State
  • missing
  • restrained\unrestrained
  • Braced\Bracing
  • Fixed\Pinned
  • steel
  • Punch Check Position
  • Gravity Only
  • missing icon
  • missing command

What is the Property Wet weight per area and Dry weight per area reported when using profiled metal decking?

Question When defining a slab, the Properties window provides a Wet weight per area and Dry weight per area property value. When using a profiled metal deck these values do not match the value in published tables. Why is this?   Answer The slab weight per area and the dry weight per area property values are not used for profiled metal decking where the true profile shape is considered. They are included to consider solid slabs such as precast.   Calculation of wet/dry weight per area The wet and dry weight per area is calculated using a simple cubiod using Density x slab depth x
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • wet weight per unit area
  • dry weight per unit area
  • composite slab
  • profiled metal deck

Why do I get duplicate modes warning after running a buckling analysis?

Duplicate modes are possible in a buckling analysis due to the way this analysis is performed.   Since you are really only interested in the first (simplest and lowest) modes you are not really concerned with the higher ones up near the boundary.  Therefore, you do not really need to worry about the warning, however here is an explanation of what goes on internally (applicable to Subspace only): You request N modes The Eigen solver runs. It searches for 2N modes, and iterates until the bottom N have converged (lower modes converge quicker) Finally a check is run – how many modes SHOULD have
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • similar modes
  • subspace iteration
  • duplicate/similar
  • second-order buckling

Can I apply a patch load that is a different value to part of the same roof panel?

Question I have an overhang on my roof where I would like to apply a patch load that is different to the rest of the roof. Is there a way to apply a patch load without modelling a separate roof panel, which would affect my roof wind load zones? Answer In the screenshot below, an Area load has been applied over the entire roof panel. To apply a load to part of a roof panel you need to use the Patch load command. If you review the Load ribbon > Panel Loads group, you will only see a few of the panel commands are available to you. This is because the other panel load types need to be applied
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by Trimble Solutions UK
1
  • panel load
  • roof
  • patch load

How do I resolve meshing and mesh quality errors or warnings?

Element Quality The element quality refers the shape of the element. Low quality elements may come from a number of sources including but not limited to: Gaps between slabs, Small spaces between columns, Columns very close to the edge of a slab but not quite on the edge, etc.   In some instances, the quality may be at a level that could be ignored e.g. 4.99% (only 0.01% lower than the 5% limit). In other instances, the question of whether to ignore the warning or not is less obvious and engineering judgement should be applied (e.g. 4.80%, 3.85%, etc.).   How to adjust the user limit? You
Requires Tekla Maintenance
by Trimble Solutions UK
4.25
  • Mesh
  • quality
  • error
  • warning
  • 2D element quality

Why are the interactive design moments different to the graphical results and why can I not find them in the Design/Check dialog?

When designing a concrete column (or wall, since concrete wall design uses the same method) using the interactive design, you may find that the design moment shown in the interactive dialog is different from those found in the graphical results and in the design/check dialog.  It is important to note that the moments shown in the results view are analysis moments. These moments are then used to further calculate design moments to design the column. The analysis moments can be found in the designed summary and thus this can be verified.          This begs the question "Why can I not find the
Requires Tekla Maintenance
by Trimble Solutions UK
5
  • design moment
  • interactive design
  • analysis moment
  • top moment
  • design summary

How do I show the analysis contour results for 2-way flat slabs?

In this article you will learn how to display the analysis (Moment, shear, deflection) results for 2-way slabs.   Ensure a design has been undertaken so we have analysis results to look at. Either run; Analyse ribbon > Analyse group > Analyse All (Static) command Design ribbon > Analysis & Design Concrete group > Design Concrete (Gravity) or (Static) command Design ribbon > Analysis & Design group > Design All (Gravity) or (Static) command   This ensures we have results to review.   Results View Switch to the Results view   Set the load case or combination you wish
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by Trimble Solutions UK
5
  • contour
  • analysis
  • results
  • slab
  • 2-way
  • flat slab

How do I modify the wind drift limits for Portal Frames?

It is possible to turn off or alter the wind drift limit for portal frame columns. Currently however, it needs to be done on an individual portal frame column by column basis. To do this. Hover over the column of the portal frame and ensure the Select Entity tooltip highlights just the column. (Use the Up/Down cursors or Tab to toggle until only the column is highlighted).   Once the column of the Portal Frame is highlighted, right click the column and Edit Span X XX Column.On the Design parameters page Set the Wind drift check limit or uncheck Wind drift check to turn it off for this
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by Trimble Solutions UK
0
  • Wind Drift
  • portal frame

How do I view construction or gridlines in the 3D Structure scene view above the Base level?

Question How do I view construction/gridlines in the 3D Structure scene view above the Base level?   Answer Scene content The scene content controls what is to be displayed in the active scene view.   Properties window - Show grids in 3D view The Project Workspace > Structure tree - Levels branch allows you to decide via the Properties window if a specific levels construction lines/grid is to be visible in the 3D Structure view. You can select an individual Level (i.e. St.2 etc.) to turn on or off the display of the gridlines on that specific level. You can select the Level branch to turn
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by Trimble Solutions UK
0
  • grid line
  • Construction Line
  • view
  • level

How do I place an Architectural DXF drawing as a transparent layer on each level to help with modelling?

Tekla Structural Designer allows you to place a DXF drawing on separate levels in the model. In this article you will learn how to import a DXF and show or hide it as necessary. Open the Level you wish to bring in an Architectural DXF on From the Project Workspace > Structure tree, expand Levels and open a Levels scene view you want the DXF placed on. To open the level scene view either double left click the level or right click and choose Open view from the context menu.   Import the Architectural DXF as a shadow  To import the DXF as a shadow, use the Model ribbon > Grid &
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • DXF
  • shadow
  • on
  • Off
  • import
  • Architectural
  • visible

I have imported a DXF drawing as a shadow and cannot see it in the scene view?

You can import separate DXF shadows on different levels. With the required level scene view open, import via the Model ribbon > Grid line down arrow and select the Import DXF command     Whether the DXF shadow is visible or not in the scene view is controlled via the Levels Properties window. Switch to the Project Workspace > Structure tree Select the individual Level item under the Levels branch In the Properties window ensure Shadow Visible is checked in the Properties window  
Requires Tekla Maintenance
by Trimble Solutions UK
0
  • shadow
  • visible
  • on
  • DXF
  • import

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