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Thread: Tekla Structural Designer

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    Member Knitro87's Avatar
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    Question Tekla Structural Designer

    We've recently started using TSD for analysis on steel structures. One of the major hurdles we’re currently dealing with is “round-tripping” from the Revit model into TSD, and then back to Revit. When including positional data from TSD in the transfer, all of the framing in Revit essentially gets “replaced”. As a result, beam systems, associated work planes, and other geometric constraints/information gets lost in Revit. In some cases, this makes the structural Revit model unusable, or at the very least, requires some rework.

    We’re still in the process of learning the tool, so if a solution for this already exists, we haven’t found it yet. Is there something we're missing? Has anyone else had a similar experience? Any insight would be greatly appreciated!

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    Can you outline what you mean by 'positional data'? Do you mean all the members? (Columns, beams etc.) Normally, no elements should be replaced when linking the models. If you move an element in one model it should move that element in the other model. If you create a new element in one model, it should create an element in the other. We would normally make any geometric changes (Adding/moving members) in Revit. Then export the model to TSD, run an autodesign and import the new section sizes into the Revit model.

    We've been using TSD for over a year now. We have had issues with it but not too many linking the Revit and analysis models. What do you think of the software so far? There doesn't seem to be a large network of users yet.

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    Member Knitro87's Avatar
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    Quote Originally Posted by Oisin78 View Post
    Can you outline what you mean by 'positional data'? Do you mean all the members? (Columns, beams etc.)
    I haven't seen it happen with my own eyes, but I've been told it's sometimes all the members.

    Quote Originally Posted by Oisin78 View Post
    We would normally make any geometric changes (Adding/moving members) in Revit.
    We've made geometric changes in TSD, and then linked it back to Revit. But if a beam is part of a beam system in Revit, when the link from TSD occurs, that beam system gets removed. We've also seen framing lose it's association to a work plane or reference plane due to geometric changes that were made in TSD.

    Have you had any issues with analytical node connectivity? I've had design engineers tell me that just because they're "connected" in Revit, doesn't mean they are connected in TSD. It was explained to me that the dimensional tolerances in TSD are many times more precise than Revit.

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    If you added or moved members in TSD, these members should be created or moved in Revit when the model is linked again. As fair as I know, TSD doesn't understand what a beam system is. You must copy and paste the members, creating individual members. This allows a link to be formed for each item rather then a link between a group of items. If the elements were associated with a workplane in revit, it shouldn't lose it's association when you link the TSD model back to revit. I' not sure why that is happening.

    We have had issues with connectivity, but mainly due to Revit Technicians not having experience using Revits analytical model. Once the nodes were connected correctly in Revit, they were brought into TSD fine.

    Tekla are quite good for responding to queries when you have any issues. If you have several users of the package, it might be worthwhile getting a maintenance contract with them

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    Member uaifestival's Avatar
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    My understanding is that also Revit had problems with group, they are not reliable as they should.
    It is annoying but a beam system could be also splitted into single beams, it might be an option to try.

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    Can I ask what your thoughts are on TSD as a whole? Are people in your company learning to use it quickly? Are many people using it? Do you find alternative packages like GSA, ETABS, STAAD, SAP 2000, RAM, StruSoft, Prokon, Sofistik etc. to be better. Do you think the link to Revit is much better in TSD than other packages?

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    Hi,
    We have also been approached by a reseller for TSD and have considered this program.
    Before signing up for it I trying to understand the difference btw TSD and Robot. As we use Revit I would have though Robot might have been more suitable.
    How do you find TSD? Do you have any experience with Robot and can compare the 2?


    Thanks
    JH

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    Hi,
    We have also been approached by a reseller for TSD and have considered this program.
    Before signing up for it I trying to understand the difference btw TSD and Robot. As we use Revit I would have though Robot might have been more suitable.
    How do you find TSD? Do you have any experience with Robot and can compare the 2?


    Thanks
    JH

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    Quote Originally Posted by jh75 View Post
    Hi,
    We have also been approached by a reseller for TSD and have considered this program.
    Before signing up for it I trying to understand the difference btw TSD and Robot. As we use Revit I would have though Robot might have been more suitable.
    How do you find TSD? Do you have any experience with Robot and can compare the 2?


    Thanks
    JH

    I have very limited experience using Robot but I have used TSD quite regularly over the past year. The first major differences between the packages is the user interface. TSD has a much newer look and feel compared to Robot.

    The link between the two softwares to Revit is quite similar. TSD have developed there own plugin for Revit which you can download. This will link the grids, levels, members, slabs w/openings, walls w/openings, & analysis results. You cannot link loads / loadcases.

    TSD is able to auto design steel and concrete members. It has a design wizard for trusses and portal frames. It can do the design of flat slabs, precast slabs, two way spanning. It cannot design one way spanning. It can design pad & pile foundation, pile caps, & ground bearing slabs.

    TSD completes design to BS, EC, & American codes primarily. It can do design for some other countries such as the Indian & Malaysian codes, but there many focus would be the big 3.

    If you are considering purchasing TSD, I would strongly recommended also purchasing a maintenance contract. This will allow you to contact Tekla directly when you have any queries or questions. There is a very poor on line community for TSD, so being able to ask Tekla support is a must. They normally reply to an email in about 90mins.

    Hope this helps
    Ois

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