Structures - Types Slides Key Concepts 4 - 8 Structural Types 9 - 12 Functions of Structures 13 - 17 Familiar and Famous Structures 18 - 21 Structural Materials 22 Joining Materials 23 - 25 Strengthening Materials 26Symmetry 27 Structural Shapes 28 Structural Design 29 - 30 Mass, Force and Weight 31Forces 32 Types of Forces 33 - 34 Loads 35 - 37 Structural Stability 38 - 39 Structural Failure 40 - 42 Structural Safety