RAM Load Combination

RE: RAM Load Combination

Nik — Fri, 30 Sep 2022 15:01:53 GMT

Seth,

Has there been any update on this? Is there a way we can generate custom load combinations in Steel beam and Steel column module?

Thank you!

RE: RAM Load Combination

Seth Guthrie — Wed, 10 Feb 2016 00:05:33 GMT

A bit off topic, but when using the RAM Structural System -> Ram Concept direct link from Ram Manager, load combinations are always regenerated as you noted.

If you use Ram Concept stand-alone and import the Ram SS model you can then revise the Concept model and your changes will stay in place so long as you don't import/update the file from the RAM SS model again.

The request has been made a couple of times and I have an enhancement request logged, but please help us to understand the reason why Ram Concept's generated load combinations are not right for you.

RE: RAM Load Combination

Greg Mercurio — Tue, 09 Feb 2016 23:10:04 GMT

I want to create a custom load combination in Ram Concept, but it gets erased every time i go back and forth to Ram SS. How do I get it to last?

Re: RAM Load Combination

Seth Guthrie — Wed, 18 Jul 2012 00:47:25 GMT

There are two basic approaches for RAM SS custom combinations that you might want to reuse.

One approach is to just copy a set of combinations to the clipboard, paste in Excel and then keep the Excel spreadsheet available to copy and paste from in your future models. This works well when there are no variables (like redundancy factors) and when the list of load cases is always the same.

The slightly more elaborate approach is to create your own load combinations template. Details instructions for that under Start – All Programs – Bentley Engineering – RAM Structural System – Manuals – Load Combination Generator.pdf

I recommend that you start with a program template that is close to what you want, make a copy and edit it rather than starting from scratch.

Re: RAM Load Combination

jtonneson2002 — Tue, 17 Jul 2012 22:37:07 GMT

I want to save a custom load combination I have to enter it manually every time I run ram frame...how do I do this?

Re: RAM Load Combination

albert1000 — Sat, 19 Mar 2011 00:54:56 GMT

Thanks seth for the link! really helps!

Re: RAM Load Combination

Seth Guthrie — Fri, 18 Mar 2011 23:36:49 GMT

At this point I think you should probably work the tutorial or read the program manuals.

communities.bentley.com/.../ram-structural-system-tutorial.aspx

Beams do not require templates; columns and shear walls do.

Re: RAM Load Combination

albert1000 — Fri, 18 Mar 2011 01:34:56 GMT

OK.you are right! beam should assign bar pattern also?

How about shearwall. Are shearwalls could be design in RAM? Thanks!

Re: RAM Load Combination

Seth Guthrie — Thu, 17 Mar 2011 21:52:10 GMT

You are probably missing Bar Pattern definitions. Use the Process - View/Update command on any blue column to get a warning for what is missing.

Re: RAM Load Combination

albert1000 — Thu, 17 Mar 2011 14:06:37 GMT

Hi Seth,

Could you help me to find out what's the problem in my exercise model? I couldn't run the concrete design.. but beam design works fine except for column.

Regards,

Albert

Re: RAM Load Combination

Seth Guthrie — Wed, 16 Mar 2011 20:45:10 GMT

In RAM Concrete, in addition to having lots of load combinations, there are also load patterns (aka skip loading) to consider. Consequently, the Beam design report won't report the specific load pattern and combo that controls the design. The Concrete column module does indicate the governing combo, but not the specific pattern that controls.

Re: RAM Load Combination

albert1000 — Wed, 16 Mar 2011 15:19:09 GMT

Hi Seth,

How will I know which particular load combinations governed in my concrete beam/column design? Are these combinations can be viewed in the report?

Re: RAM Load Combination

albert1000 — Wed, 16 Mar 2011 01:55:35 GMT

Thank you very much Mr. Seth!

Re: RAM Load Combination

Seth Guthrie — Wed, 16 Mar 2011 01:16:52 GMT

Because the different materials utilize different load factors each module has it's own complete set of combos which can be reported from those modules.

Slabs can be analyzed in RAM SS, but the design can only be done by exporting the data out, typically to RAM Concept.

Re: RAM Load Combination

albert1000 — Tue, 15 Mar 2011 23:33:49 GMT

OK. Got it. Are these load combinations are use same in concrete and beam design?

Suspended slab could not be designed in RAM SS, However, the slab model in RAM SS can be exported to RAM CONCEPT? Sorry for too many questions. Just want to know how to design using RAM.

Thanks again folks!

Re: RAM Load Combination

Seth Guthrie — Tue, 15 Mar 2011 22:31:27 GMT

The Report - Load Combinations is best (I access it from the RAM Frame - Steel Standard Provisions mode usually).

Re: RAM Load Combination

albert1000 — Tue, 15 Mar 2011 22:21:04 GMT

Hi Seth,

Thanks again for the info. Are these load combinations(code dependent) can be view in the report?

The said link for two-way slab is very informative!

Cheers!

Albert

Re: RAM Load Combination

Seth Guthrie — Tue, 15 Mar 2011 21:08:36 GMT

Indeed, within RAM Frame (and RAM Concrete and RAM Foundation), the program can be used to generate load combinations according to the selected building code, typically. Custom load combination templates can also be used. Refer to the program sub manual called “RAM Load Combination Generator.pdf” for details (access the manuals from the Start menu).

Two way slab analysis is also part of the program. In addition to the manual, there is a nice Wiki here:

communities.bentley.com/.../ramss-two-way-decks.aspx

Re: RAM Load Combination

albert1000 — Tue, 15 Mar 2011 03:55:23 GMT

Thank you Mr. Seth for your response.

How about in the RAM Frame Module? I know that RAM has automated lateral load generator. Are those combinations automatically sum up when designing the frame or do I need to combine those manually?(exmp. 1.2DL + 0.5LL +1.6 Wind_IBC03_1_X)

Another question Mr. Seth, Is there two-way slab in RAM SS?

Many thanks.

Re: RAM Load Combination

Seth Guthrie — Mon, 14 Mar 2011 21:25:10 GMT

Currently the combinations used for steel, gravity members are built into the RAM Steel Beam and Column design modules directly (based on the selected design code) and there is no user control.

There is no specific report for load combinations there, but you can see them on any design report or through the View - Diagrams window.

Note, we do have plans to improve the steel modules to incorporate user-generated load combinations which could vary by building code or user preferences, but for now, that is only available in the RAM Frame, Concrete and Foundation modules.