I wrote this macro to get started with OpenSTAAD through Excel VBA:
Sub OpenSTAADExample()
Dim OpenSTAADObject As Object
Dim OSFileName As String
OSFileName = "C:\SProV8i\OpenSTAAD\SampleFile.std"
Set OpenSTAADObject = GetObject(, "StaadPro.OpenSTAAD")
OpenSTAADObject.OpenSTAADFile OSFileName
OpenSTAADObject.CloseSTAADFile
OpenSTAADObject.Quit
Set OpenSTAADObject = Nothing
End Sub
I get this error: "License information for this component not found. You do not have an appropriate license to use this functionality in design environment."
How can I fix this?
Thanks.
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OpenSTAAD - Getting Started
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RAM Concept Integration into RAM SS
It appears that when you update beam sizes in RAM Concept, they will not transfer back into RAM Structural System. So the only reason for the integrated link in RAM SS for RAM Concept is to import initial geometry and ladings.
Ideally this internal link would go both ways, so that if I updated beam sizes in RAM Concept it would update them in RAM SS. Please let me know if I am missing something in this approach.
Our current approach would be to have a separate floor model of each floor and then I would just make sure to import the ladings each time I opened the file.
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RE: RAM Concept Integration into RAM SS
Both RAM Structural System and Ram Concept are ISM enabled, so in theory you could use the ISM link to synchronize changes that are not in the direct link, but the direct link would still be required for transferring loads/reactions between the two applications so I hesitate to even mention this added complexity or workflow.
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RE: Forum Feature Requests
I've had a few requests, mostly from internal support colleagues, to split the forum by brand but it did not seem there was enough traffic to warrant a separate RAM Forum. If we get to the point where there are more than a couple of questions a day I would consider it again. I also find that a fair number of the questions about finite element analysis apply equally well to either brand.
The new search engine in our Telligent upgrade does allow filtering by tags and by post type as well as post date, so you could use the search to quickly isolate all the Ram posts.
You could also just search the term "ram" to catch those posts that are not tagged at all. Here's a reusable link, for example, for all Forum posts in the Structural Analysis and Design community in the past week with "ram" in the text:
When it comes to tagging, I usually start typing the TAG and then the site should offer suggestions. It's faster than using Select Tags.. in cases where lots of TAGs have been used already.
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Forum Feature Requests
I would like to request 2 items in the forum:
- Either separate STAAD and RAM forums, or the ability to filter out keywords. I use the RAM suite and not STAAD, so If I don't come here frequently it is difficult to find discussions pertinent to what I use.
-When using tags to search, have the default list be chronological (newest-oldest) as opposed to entirely random. Or, at least, have the results be sortable by title/date, etc.
I think this forum is a valuable tool, but sometimes it is onerous to navigate. If there is a better place to post this, please let me know.
Thanks
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RE: Doubt in defining Rigid Floor Diaphragm
Dear Sir,
Is there any advantage of Floor Diaphragm command over specifying Master Slave command other than being able to get CM?
Also, is there any way I can define the Mass Model Reference Load by referring to separately defined reference loads for DL and LL? Otherwise, I end up with the earlier problem of having to define the loads twice (one for the mass model and once for the primary load cases). This may seem insignificant in small projects. However, in large projects which undergo multiple changes in the design phase itself, it leads to likelihood of error due to inconsistency between dead/live loads defined and the seismic weight specification.
Thanks in advance
Arunkumar
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STATIC AND DYNAMIC ANALYSIS OF STRUCTURE
Please share a realistic example of seismic analysis using STATIC and DYNAMIC inputs in a single run and explain why the said model is now ready for design (like the mass participation ratio in dynamic analysis is now accepted and show also how to scale the result of static and dynamic if possible).
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RE: STATIC AND DYNAMIC ANALYSIS OF STRUCTURE
In the model posted in post number 3 (where the text of the staad file is posted), I note the following doubts
1. If I remember correctly, I was told during an eSeminar that defining the Mass Model reference load would enable it to be considered for the seismic weight calculation directly. However, you have defined the earthquake load seismic weights first, and then the mass model and finally the primary loads. Do we need to define the loads three times?
2. If Live load is 2 kN/sqm per floor, why is 50% live load taken instead of 25% when calculating seismic weight
3. In load combinations 9 to 16, 1.2 (DL+LL+/-EL) are defined. As per IS1893 Part 1 - 2002 Clause 7.3.3, we can take reduced live load as used in defining seismic weight instead of full live load. This is also noted in IS 875 Part 5 under load combinations. This has not been implemented.
Your comments on the above are requested
Thanking you
Yours sincerely
Arunkumar
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RE: Doubt in defining Rigid Floor Diaphragm
There are many advantages of defining Rigid Diaphragm commands in the model. You can find out Center of Rigidity of the floor by using PRINT DIA CR command. You can also find out the actual story stiffness using PRINT STORY STIFFNESS command. Soft story checking gets the effect the stiffness of the rigid floor diaphragm.
However, you can use the above mentioned process to get the actual CM of a floor.
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Doubt in defining Rigid Floor Diaphragm
Dear Sirs,
While defining the Rigid Floor Diaphragms, there are two methods - using Master Slave ZX command and the second (newer method) is to use Floor Diaphragm command
Couple of days back in an eSeminar, I was informed (Mr. Kris Sathia was the presenter) that the Rigid Floor Diaphragm specification is superior to using Master Slave command for the following reasons
1. We can get Center of Rigidity and Center of Mass calculated with this
2. Master Slave ZX commands are automatically created internally
3. A master node is created internally at center of mass (not added if master node is specified or node already exists at center of mass)
However, I am told that in order to use the Floor Diaphragm command, we need to create a Mass Model in a Reference load to add Joint, Member and Floor Weights (similar to older method of creating seismic weight). Does this have to be created with full live load, or with partial live load? Theoretically, I would assume that full live load (including roof live load) has to be applied to estimate diaphragm rigidity. However, the same mass model is used for seismic weight calculation (you can only add to the weights). Hence, I want to know how exactly this is to be used
Thanks in advance
Arunkumar
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Documents for Staad Pro Examples
In the Staad pro app folder, there is a folder called "Examp", e.g. C:\SProV8i SS5\STAAD\Examp\,
which contains lots of std files in this folders, but I can't find descriptive documents for these examples,
Does the documents exist? if the answer is yes, then where it is located?
if not, does Bentely plan to make a document for these examples?
Other commercial softwares, like Sap2000, ETabs, Midas Gen, Midas Civil, Ram, Risa, Autodesk Robot Structural Analysis, all have detailed documents for their examples.
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RE: Documents for Staad Pro Examples
Hi,
Open STAAD.Pro and go to the following location for the documentation of the example problems:
Help > Contents > Application Examples > American Examples > Example Problems.
Click on any example problem to view documentation.
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RE: Documents for Staad Pro Examples
Along with the example problem, you can find verification problems in the folder.
The verification manual can be downloaded from the following link.
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RE: Documents for Staad Pro Examples
Thank you guys for the quick reply.
I notice those Example Problems in the Help manual and the verification manual in PDF format,
but I still couldn't find the corresponding document for the example files:
such as
C:\SProV8i SS5\STAAD\Examp\Advanced Cable Analysis\
and
C:\SProV8i SS5\STAAD\Examp\Geometric Nonlinear Analysis\
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RE: Documents for Staad Pro Examples
Please refer to the following section of Help Section. You can go to Help> Contents.
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RE: OpenSTAAD - Getting Started
Hi,
I have run your macro in my machine and it works fine. Make sure that the file path that you have provided in the macro is correct. Also open STAAD.Pro first and then run the macro. I have attached the modified macro for your reference. Specify the file path in cell B2 and run the macro.
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RE: Ram Connection - Solution only when Compatibility is Checked
Is the analysis without strain compatibility able to perform calculations with a custom HSS section? Is this the source of the error or possibly something else?
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Ram Connection - Solution only when Compatibility is Checked
Why might I only find a solution when "consider strain compatibility" is checked?
In this case I have a large (24" diameter) custom HSS shape. The program only "finds" a solution when "consider strain compatibility" is checked. Also all the design checks are "OK".
Where can I find more documentation on this module?
Thanks!
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RE: Documents for Staad Pro Examples
Only some of the examples that are in the folder C:\SProV8i SS5\STAAD\Examp\ are explained in the Application Examples manual.
If there are any specific examples for which you want the explanation, please let us know and we will post the explanation on this site.
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RE: Documents for Staad Pro Examples
I want to see the explanations of examples under:
C:\SProV8i SS5\STAAD\Examp\Advanced Cable Analysis
and
C:\SProV8i SS5\STAAD\Examp\Geometric Nonlinear Analysis
Thank you guys for the replies.
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