Final answer:
The two main systems of structural support in architecture are the skeleton and skin system and the shell system. The skeleton and skin system involves an internal structure of one material and an exterior cladding of another material, while the shell system features an exterior cladding and load-bearing structure made of the same material.
Step-by-step explanation:
The two main systems of structural support in architecture are the skeleton and skin system and the shell system.
The skeleton and skin system is characterized by an internal structure made of one material and an exterior cladding of another material. An example of this system is a building with steel beams as the internal structure and glass panels as the cladding.
On the other hand, the shell system features an exterior cladding and load-bearing structure made of the same material. A log cabin is an example of a shell structural system, where the entire structure is made of logs.