What is the best way to model a piping system with socket weld elbows and tees?

To model an elbow, I was going to use three nodes; 1 at each end (use intersection type 8 at the sockets) and one node at the elbow intersection. The bend radius will be 1. However, does Caesar II consider the added stiffness due to the fitting thickness?

To model a tee, I was going to use 4 nodes; 1 at each end of the tee (type 8 at the socket), and 1 at the intersection. What type of intersection do I use here? (Type 2?). As with the elbow, will the additional stiffness be considered by the program?