Load rating problem

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Mustafa Al-shammary
Load rating problem

I have problem running the Load rating report. PGSUPER crashes each time I try yo run the report.
Please help!
I can send the bridge file to any one may provide me help.
thank you

Rick Brice
Load Rating problem

There is a known problem when creating the WSDOT Load Rating Summary Report and the Load Rating Report when the Longitudinal Reinforcement For Shear Load Rating Checks chapter is selected. We are planning to release an update on Monday.

If you run the Load Rating Report without the problem chapter selected, you should be able to get a report and all the rating factors.

In the meantime, if you could please send me your PGSuper file and the exact report and chapter selection, I can confirm that you haven't stumbled upon a new issue. Thanks.

Rick

Richard Brice, PE
Software Applications Engineer
WSDOT Bridge and Structures Office

Rick Brice
Load Rating Problem

Thanks for sending me your PGSuper project file. You did in fact uncover a previously unknown problem. I'll get this fixed for Monday's release of version 2.8.2.

The program is crashing because you are doing the legal load ratings with the HL-93 loading. According to the MBE, the legal load rating for routine commercial vehicles should be for the AASHTO Legal Loads (Type 3, 3S2, and 3-3) and the legal load rating for specialized hauling vehicles should be for the NRL.

If you make these changes to your input, your load rating will run properly.

Thanks again for pointing out a problem. This kind of feedback makes PGSuper a better program for everyone.

Rick

Richard Brice, PE
Software Applications Engineer
WSDOT Bridge and Structures Office

Mustafa Al-shammary
Load rating results

for some reason I have my load rating cells are dashed (-) for the shear and some time for the stress as well. I have tried to lower the user defined load but I still have the same problem.

thank you

Mustafa Al-shammary
Bridges Structural Engineer @ AECOM

Rick Brice
Load Rating Results

The red (-) in the load rating output indicates an error. The software was unable to compute a meaningful rating factor. This typically occurs when the dead load effects are larger than the capacity resulting in a rating factor that is less than zero.

You can review the load rating details to see exactly what parameters are being used in the load rating formula. If any of the values do not make sense, that is where the problem is. If you have user defined loads, check the magnitude of those loads. I recently saw a file where the user input 0.89 k/ft for a load on one girder and 0.089 k/ft on all the other girders.

Pickings
I took a look at your input

I took a look at your input file and there appears to be very little transverse reinforcement defined in comparison with TxDOT's standard stirrup layouts. This could be the cause of the problems?

Richard Pickings, P.E.
BridgeSight Inc.

Mustafa Al-shammary
Yes, that was the reason. I

Yes, that was the reason. I have to use the library default beams data.
thank you so much

Mustafa Al-shammary
Bridges Structural Engineer @ AECOM

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