an igloo is a shell structure since it is not filled it is only a shell
shell because it is hollow and therefore represents the form of a shell which is also recognized as a shell structure
An igloo is considered a mass structure. It is a dome-shaped shelter made entirely of compressed snow blocks, providing thermal insulation due to the insulating properties of snow.
advantages of a frame structure: cheap strong disadvantages of a frame structure: expensive advantages of a shell structure: unique strong disadvantages of a shell structure: expensive
A shell structure supports its self and a frame structure does not support it self.
A tent is a frame structure
frame structure
It is a shell structure so that it can hold stuff.
frame structure
frame
my toes
solid structure