1. Types Of Structures
1.1. Shell
1.1.1. A shell structure is the strongest structure that are hollow in side because shell structures have space inside of them. They also use very little materials to their construction
1.1.1.1. Examples
1.1.1.1.1. An egg
1.1.1.1.2. A desk
1.1.1.1.3. An Igloo
1.1.1.1.4. A box/ carton
1.2. Frame
1.2.1. Frame structures are made of a lot of parts fastened together, frames by them self are frame structures.
1.2.1.1. Examples
1.2.1.1.1. A tennis racket
1.2.1.1.2. Dish drying
1.2.1.1.3. spider web
1.3. Combination
1.3.1. A lot of structure are combination structure. Houses are build from solid structures. they also have a metal thats supports a shell of bricks.
1.3.1.1. Example
1.3.1.1.1. Houses
1.3.1.1.2. Buildings
1.4. Solid
1.4.1. A solid structure is a structure hollow all the way through. Relying on solid materials to support loads.
1.4.1.1. Example
1.4.1.1.1. A wooden telephone pole
1.4.1.1.2. Sand castle
1.4.1.1.3. Mountain
1.4.1.1.4. A dam
1.5. Loads
1.5.1. Dead Load
1.5.1.1. Dead loads are permanent or stationary. They are primarily due to its own weight of structural members and weight of different materials.
1.5.1.1.1. Examples
1.5.2. Live Load
1.5.2.1. Live loads are moving loads or movable loads with out acceleration or impact.
1.5.2.1.1. Examples
1.5.3. Dynamic Load
1.5.3.1. A Dynamic load is a load that can change or is load that is applied with motion.
1.5.3.1.1. Examples
2. Force
2.1. Internal Forces
2.1.1. Internal forces are forces exchanged by the objects in the system. They resist the effects of external forces. There are four types of internal forces: Compression, Tension, Torsion, and Shear.
2.1.1.1. Compression
2.1.1.1.1. Compression is the action of being squished down or being made smaller or pressed together.
2.1.1.2. Tension
2.1.1.2.1. Tension is the force of an object being pulled tight by opposite ends.
2.1.1.3. Torsion
2.1.1.3.1. Torsion is the act of twisting or the state of being twisted.
2.1.1.4. Shear
2.1.1.4.1. Shear is a strain made when layers of an object are subjected to opposing forces.
2.2. External Forces
2.2.1. External forces is pushing or pulling something or someone. Pressures that arise from outside a system. The most obvious external force being on structures is gravity.
2.2.1.1. Most common external forces
2.2.1.1.1. Gravity
2.2.1.1.2. Natural Diasters
2.2.1.1.3. Wind