When I run start the design process I get the following in a small popup window called "Design messages":
Member 29: Tension reinforcement could not be designed in span 1Member 29: Insufficient tension reinforcement at 0.000 mMember 29: Insufficient tension reinforcement at 0.250 mMember 29: Insufficient tension reinforcement at 0.550 mMember 29: Insufficient tension reinforcement at 1.100 mMember 29: Insufficient tension reinforcement at 1.587 mMember 29: Insufficient tension reinforcement at 1.619 mMember 29: Insufficient tension reinforcement at 2.138 mMember 29: Insufficient tension reinforcement at 2.656 mMember 29: Insufficient tension reinforcement at 3.175 mMember 29: Insufficient tension reinforcement at 3.694 mMember 29: Insufficient tension reinforcement at 4.213 mMember 29: Insufficient tension reinforcement at 4.731 mMember 29: Insufficient tension reinforcement at 4.762 mMember 29: Insufficient tension reinforcement at 5.250 mMember 29: Insufficient tension reinforcement at 5.800 mMember 29: Insufficient tension reinforcement at 6.100 mMember 29: Insufficient tension reinforcement at 6.350 m
...and the list goes on for ALL beams in my model along their complete span. No matter what parameters I change in the beam design brief nothing changes. I'm using ACI 318M-05.
This almost happens in any model I have ever used in STAAD, so I'm basicly using STAAD now just for analysis, I then do my design calculations on excel sheets...I'm trying to get more professional and efficient than using excel here so what am I missing?
I would so much appreciate if there is a database of these error messages that Bentley can collect in one place in the help explaining how to overcome these errors, perhaps a set of tutorials too in the Bentley institute that will cover these various error messages.
Since you mentioned that you encounter this error with any model you run, we did a test using the simplest of models - a simply supported beam with a uniform load with all data being in metric units. The RC designer mode produces a design that seems reasonable and consistent with the results obtained by designing the same member in the batch mode of design. And the message you reported did not appear.
If you can ZIP all the files for that project and upload it, I can look into it. I would also suggest you check the units of the input, such as strength of concrete an steel, clear cover, beam cross section size, etc.
I am attaching the model that I tried. Can you check if this produces the messages you described?
I will in the meanwhile try with more robust models and see if I encounter the same problem as you did.
6735.RC designer test.std