In Objective 2.2_Practical Application #2, An IBC table #503 is shown with Allowable building height And areas for different groups. I don’t have that table in my IBC 2018 book version! The first table in chapter 5 is 504.3! Why? did it change? Is it not important anymore? AND: how come this treatment plant project is not in the hazardous group but rather considered an F? It mentioned having chemicals?