Types of Forces
Forces that are constant and do not change over time
type of bridge where the roadway is supported by a series of cables suspended from towers, which are anchored to the ground.
Suspension Bridge
Plants and trees
Natural Structures
Loads that do not move. The structure always has to support them.
Dead Loads
Forces that are variable and change over time
Dynamic Forces
A simple bridge type where a horizontal beam is supported at each end by piers or abutments.
Beam Bridge
Tall buildings that sway in the wind.
Flexible Structures
Loads are things that a structure supports through regular use. These loads can change at anytime
Live Loads
defined as the force transmitted through an object when pulled by forces acting from opposite sides
Tension
A type of bridge structure that utilizes an upward curved arch to support a roadway or other structure above it.
Arch Bridge
House foundations and Bridge supports
Rigid Structures
A type of forces within a structure that arises from interactions between different parts of the structure itself.
Internal Forces
occurs when a physical force presses inward on an object, causing it to become compacted
Compression Force
A type of bridge characterized by a framework of interconnected triangles, usually made of wood, iron, or steel.
Truss Bridge
Strong shapes that use a combination of tension and compression.They use the least material for the most space
Dome Structures
A type of force that act on the structure from outside
External Forces
refers to a force that causes an object to twist around its axis, creating shear stress along its cross-section.
Torsion/Twist Force
A type of bridge where the structure is supported by structures called cantilevers, which project horizontally into space and are anchored at only one end.
Cantilever Bridge
Structures that are not naturally made
Man Made Structures
This force is like a sliding action where one part of something pushes past another, causing it to deform or cut.
Shear force