I have a gnarly spreadsheet that does dig into RISA and pulls out the specific loads and load combos I want, but if I want to quickly grab the maximum reactions out of that same model, I need to disable 1.0W and 1.0E so they don't accidentally control, as they are not "real" load cases in ASD...
Oh yes, you can turn off any load combo you don't want run, but I do want all load cases run, otherwise I wouldn't have included then, what I don't want is to see all of the results from all load cases included in the envelope results.
Thanks everyone for the suggestions, but I've come to the...
I meant to state in my OP that I always use the Batch Solution, which is explicitly not a solution to my request.
Batch includes all calc'd LC's as well as an enveloped solution. So if I want to run all of my 1.0D, 1.0L, 1.0S, 1.0W, 1.0E, 1.0Ice, etc load cases, those are always included as...
The graphical symbols used in RISA are not great. End-offsets seems to mostly be clear and distinct, but as you note, the releases are impossible to see when multiple come into a node, as well as it being impossible to tell what releases are released from the graphics alone, so you need to check...
In Bluebeam, after deleting a markup it auto-selects the next markup (or it mostly seems to be the next one), so if you hit delete a few times, you start deleting markups in whatever seemingly random order BB thinks you wanted. I wish it would just NOT select another markup so I could hit delete...
Simple question, I know I can disable some load cases for design operations, this is good, but I also don't want to see those same load cases in my envelope results. Unfortunately, I have found no way to do this.
There is an option when running the analysis to "Envelope (only) of Marked...
You should be able to dig into the calcs ("Detail Report") and see exactly what numbers it used for the capacity calcs. I'm not familiar with CFS calcs in general nor how RISA handles them, but it should tell you exactly what it's doing, and you can see where your numbers diverge. My initial...
These are just some thoughts on snow drifts in general, as I'm not familiar with the Canadian codes, however:
Per ASCE, you check both the windward and leeward drifts. Both drifts are calculated exactly the same, based on the upwind snow fetch area (the length of roof leading up to the...
@jayro12
If you only ever model everything CL-CL then you're missing some real internal moment effects. Nothing major, but could be the difference between passing and failing on some members. It basically just saves you the effort of having to manually model every rigid link between all member...
Josh,
I have members coming into it, and it's supported on another member. Most of my members have analysis offsets and end offsets, including the supported and supporting members.
There are no diaphragms, walls, plates, or other meshing-type elements anywhere near this frame. I do some area...
Its a standard member definition, with typical values in agreement with the AISC manual. I also tried another channel and an angle, just to see if the centroid theory held, and it mostly did, see my original post. And while I do have a strong suspicion what is causing the problem (adjusting...
I would say that RISA is a perfectly fine general analysis software, and when I used RISAFoundation years ago, that worked really well, too. Never seen Adapt used. I did spend a long time in RAMSteel, as well, but none of the other Bentley products. I know my coworkers made extensive use of...
I am getting what seems to be a bug, but maybe there is something I'm just not thinking of, and you guys might have some ideas.
Firstly, all I'm doing between the 3 test runs is updating the ANALYSIS OFFSET for 1 member (C8x13.75), and I get the following results:
With +z-0.54, the analysis...
Any floor plate will naturally be broken up into rectangular/triangular sections (In your case, all rectangles), unless it's curved, which is a whole other problem (and even then, structurally, it's probably just triangles).
You don't need 1 area load for the whole floor, any sub-set of area...
It's always bugged me that RISA prints everything as raster graphics. It would probably be even easier to program it if they just did vector graphics instead. This format wastes file size (and with lots of images, it adds up quickly) as well as removes the ability to select/copy text and to zoom...
Well hopefully someone over there (German, or whoever else), can see this and takes note. It would be a very simple fix, even in a program with the working complexity of RISA.
The strut and tie is necessarily a simplifying assumption regarding concrete behavior. If you build a full solid model of the beam with sufficient granularity, you should achieve more accurate results.
Having never done anything with solid elements or reinforced concrete in RISA, I'm well out...
The program forum that we're in, RISA-3D. I'm not using FLOOR, or CONNECTIONS, or any other related programs.
And all tools. That's the problem. Every tool has an annoyingly unique KTS option. As stated above, if they all linked it wouldn't be as annoying, but you have to select it for each and...
I'm constantly annoyed by having to re-select a tool and subsequently reselecting Keep Tool Selected (KTS) every time I reopen the software. And it's not like it's just a single click, every single tool you open has it's own KTS option that you have to click for each and every tool you want to...
The BLC window is the best location to view all of your applied loads. There is a column for Nodal, Point, Distributed, Area. Click any of those cells and it'll open up the corresponding load type with the selected BLC (gravity, railing, etc.) open.
