Desmond You Sheng TONG's Activities

Using OpenSTAAD methods in Python

Hilbert Garlando — Tue, 10 Aug 2021 23:56:28 GMT

Hello,

I have been using OpenSTAAD with Excel VBA for several years now.

However, I can't get my head around using certain OpenSTAAD functions in Python.

I tried following the simple example provided in:

https://docs.bentley.com/LiveContent/web/STAAD.Pro%20Help-v11/en/GUID-73F491D8-3F8F-4F0D-AF2A-E49D6C33FFB9.html

My code worked properly for the mentioned functions (GetNodeCount and GetMemberCount). But these ones don't need to pass any argument to the function.

In general, I don't encounter any problem with argument-less methods.

My question is: How can you actually use OpenSTAAD methods which pass the return variable as one of its argument?

Example of this is GetNodeList.

For instance, the OpenSTAAD manual uses the variable NodeNumberArray as the return variable and at the same time as an argument of the same method.

(e.g. objOpenSTAAD.Geometry.GetNodeList NodeNumberArray). I know this is easily achieved in other programs, like C or VB.

How do you accomplish this in Python?

Thanks.

STAAD Pro "steel design detail" no longer able to show specific selected beam

Desmond You Sheng TONG — Fri, 02 Sep 2022 07:38:32 GMT

I am using STAAD Pro CONNECT Edition v22. After the update, the "Steel Design Detail" in the Report no longer able to select to show specific selected beam. Instead, the report lump every single member design detail in one like below:

In previous version, we are able to specify the member to show in Ranges as shown below:

STAAD Pro: Why there is horizontal reaction in my model when there is no any horizontal loading input

Desmond You Sheng TONG — Mon, 04 Jan 2021 10:27:50 GMT

Hi there,

So as the subject of the discussion suggested, I have modelled my construction deck using plate element in STAAD Pro and assigned various vertical load (eg: construction load, selfweight, SDL etc.) and the deck is supported by diaphragm wall at the edge and kingpost/deckpost in the middle of the deck. For ease, I used pinned support for all the supports.

However, all my loadings assigned are vertical (in y-direction) and i have checked in the post processing "static check results", all my loadcases have zero Fx, which means i supposed to have zero reactions at all supports. But, when im extracting the reactions from the supports, some of them have reaction in Fx (horizontal) direction. Even when I am looking at single loadcase like Selfweight, some of the support have Fx reaction.

This has been bugging me for a while. Hereby attached the std. file, hopefully some of you can help me on this. Thanks.

communities.bentley.com/.../Construction-Deck_5F00_pin_5F00_1.0EI_5F00_v8.std

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