1. Forms& functions
1.1. Form is what the structure looks like and what materials it is made of.
1.1.1. form: frame of house and function: people inside a house because it is a shelter
1.2. Functions is the purpose of the structures
2. External forces
2.1. External forces is when a force is applied from outside of a object.
2.1.1. Magnitude-is measure how strong the external forces is
2.1.1.1. earthquake
2.1.2. Direction of force- direction of the force being applied
2.1.2.1. a house in a tornado: represents
2.1.2.2. door open
2.1.2.2.1. tree falling on a structure show an external force affecting outside of structure
2.1.3. Point of application - the area where the force is being applied
2.1.3.1. SOMEONE ON A BOX
2.1.4. Plane of application - a flat surface in which a force passes through
2.1.4.1. box
3. Center of gravity
3.1. center of mass/where the weight is evenly spread and all sides must be even
3.1.1. example: a pyramid. the center of gravity is near the bottom. it is near the bottom because it has a very wide base.
3.2. cneter of gravity:
4. Internal forces
4.1. Internal forces are when something cause a object to move.
4.1.1. Compression
4.1.2. Torsion
4.1.2.1. house in tornado shows compression- being pushed together, tension- it is pulling it apart, torsion- it is twisting the house, shear- it could break in half.
4.1.3. Tension
4.1.4. Shear
5. Types of structures
5.1. solid structure: an object that uses solid construction to support loads
5.2. solid structure: brick wall
5.3. frame structure: an open structure that uses shape to support something
5.4. frame structure: frame of a house
5.4.1. structure: a house. it's a frame structure because of the frame they build before they build the house. it is a shell structure because of the bricks used to build it. it is a shell structure because it is hollow but can still support load
5.5. shell structure: a hollow structure with a curved shape that can support a load
5.6. shell structure: bicycle helmet
5.7. combination structure: a combination of shell, frame, and solid structures
5.8. combination structure:
6. loads
6.1. live load: a moving weight added to a dead load
6.1.1. live load
6.2. dead load: constant load on a structure caused by its own weight
6.2.1. dynamic load: wind pushing on the structure, live load: the people inside house, dead load: the house itself
6.2.2. dead load
6.3. dynamic load: a live load on a structure
6.3.1. dynamic load: