I'm working on a two-span prestressed PCEF bulb tee bridge for a state DOT in LEAP Bridge Concrete v19. I'm new to LEAP Bridge Concrete, but I've used other LEAP products. We're at the TS&L stage, and I'm trying to get the preliminary design of the superstructure, an abutment, and the pier done, but I'm having a very unusual problem where LEAP Bridge will crash and completely wipe my model.
The crash seems to happen most often when I'm trying to use the Help menu (F1), though it has occured at other times as well. When it crashes, I re-start the program and am presented with a dialogue asking if I would like to restore using a backup file, save the backup file, or just continue as-is. I've tried all three options, and none work. I will get an error about a program exception, then I'm left with a blank LEAP Bridge file. Even the option to save the backup file does not work. Saving periodically doesn't do anything, because the program literally wipes out the file entirely...regardless of how many times you save it. The only potential work-around I see is to periodically copy the file within the directory, but that's not really a practical solution to this problem.
I had our IT department reinstall the program, but it does not appear this has resolved the issue. I have tried running LEAP Bridge Concrete v18, and I did not get any crashes. However, I am not able to run the AASHTO 8th edition code in v18, so that will not work for our project.
Has anyone else encountered this crashing/wiping problem in v19 or have any suggestions about how to resolve it?
UPDATE (1/22/20): I've also confirmed what Seth noted in the comments, that LEAP Bridge Concrete v19 will also crash when using the cap auto-design feature in the RC-PIER module. In my case it doesn't simply wipe my model, it completely deletes the file from our server. LEAP created a backup .RCP file which I was able to restore with; however, that file also crashes upon running auto-design.
I also tried manually defining cap reinforcement, but RC-PIER crashes when running that as well. This is a very critical error, as there is currently no way to design a cap in Leap Bridge Concrete v19.
Not sure if there's any relation to the crashing/wiping, but I also receive the message "Properties for default combinations are different than the one in the library: FATIGUE I" every time I open my RC-PIER model. LEAP never saves my analysis results, and I'm left re-developing load combos and re-analyzing each time I open it. FYI, I did not make any modifications to load factors from the default in Leap Bridge Concrete v19.
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I submitted a service request and have been communicating with Alexandru Oancea (Sr. Support Engineer, LEAP Products). There really hasn't been any solution, and my communication with Alexandru has mostly stalled. It doesn't seem like there is much of a desire to address or even acknowledge these issues on the development side. Alexandru keep repeatedly emphasizing the use of the ABC Wizard for a full bridge design. This is impractical for us at our stage of design, and I imagine it is for many people who use the software. But getting confirmation or getting answers about creating models using the individual Super/Sub modules has been very difficult.
What has worked for me so far:
1) Separate Fatigue I load combination for the others. For some reason, the Fatigue I combo causes my models to force-close and delete the file; however, if I run the same model with Fat I removed they run perfectly fine. Interestingly, running Fat I by itself or even with a couple other combos presents no problems either. I'm not sure what to make of this, but that appears to be my biggest issue.
2) If creating an individual super/sub model and not a full bridge model, make sure you ONLY enter info in the respective Super or Sub tab in the main LEAP Bridge interface. Do not enter any other information in other tabs or menus, including the Info tab (Super/Sub modules have their own Info tab).
Doing #1 has worked for all of my models so far, but #2 doesn't necessarily always work without #1. In my working models, the only oddity I've noticed is the results from auto-design runs do not display properly. The tabulated bar design seems reasonable, but the tabulated bar spacing from the design does not match the bar spacing displayed in the view. For stirrup design, you'd expect tighter spacing near supports, which the tabulated design bar lists reflects...but the stirrup spacing shown in the views is inconsistent with the bar list and illogical. I have not investigated this beyond this or ran any kind of checks yet FYI.
Hope this helps.
Ryan,
I could duplicate the crash while designing the cap with your original model.
Earlier I did miss checking the cap design and just checked completion of analysis and using the help.
The problem does not appear to be caused by using the Fatigue combination but rather using the option of “Concurrent shear and torsion” under A/D parameters.
In the meantime the workaround would be not to use concurrent shear and torsion or to split the combinations in two batches (and find the controlling one) as we did try earlier.
I will file a defect item regarding this problem.