Error on the load case combination

Hi dears

I want to combine some load case for getting max load on restraint and flage.I have used some hanger in my model.After combining load case when run to getting report, caesar will show an error.

I have attached my load case and and that Error.

What's that error? How can fix it?

Thank you

Why do you need load case 10? What are you trying to achieve with case 10? I think that might be your problem.

Also for your sustained load case you should just use design pressure (therefore only one sustained case, not two as above) and combine one sus case with the operating cases to get the exp cases. The load cases above are incorrect for sus, L9 should be L5-L7.

Use your normal operating cases for restraint loads, ie: L4 and L5. You should also check your loads in the sustained and hydro cases.

Thank you

But I khow my load case is't correct because of your reasons.

But I want to know that why I don't combine hanger case for getting max load?

The HGR load cases are not real load cases, they are used by the software to design/select the spring hangers. (See the section on hanger design in Chapter 6 of the Technical Reference Manual for details.)

For your "Max" case, use L3+L4+L5.