Hello colleagues,
I'm trying to model a concrete box section with shells in sap2000. I must do this with shells elements and this section has variation of thickness.
The thickness of the slab increases of 10 cm to 15 cm and then to 40 cm in the joint with the vertical element.
My problem is...
I've never used this manual before, and now I'm using it to do a study to my university (I'm not from USA).
I can't find any response to my question in the AREMA manual, or in other books.
What's the difference between load combination I and IA of AREMA RAILWAY MANUAL for Concrete Structures...