I am trying to model a large pump tower that is supported by a composite pipe section as shown in the attached image. One 24" OD pipe inside a 42" OD pipe with concrete grout between. Can I model this in RAM Elements CONNECT Edition?

Hello, I am wondering how RAM Steel computes the I_{tr} for composite beams. For example, I have a composite beam with the following properties as computed by RAM: But by hand, I am computing I_{tr} = 941.86, slightly less than RAM. I am guessing…