Summary Structural design and analysis

Reaction Forces and Moments

Definitions


● Reaction force: a force that occurs as a reaction to an external force applied
to a body or structure.
● Moment: a measure of the turning effect of a force. It is calculated by
multiplying the force by the perpendicular distance from the force's line of
action to the point of rotation.

Importance


● Understanding reaction forces and moments is crucial in the design and
analysis of structures, as they help ensure that the structure can withstand the
loads applied to it.


Joints and Connections in Civil Engineering

Definitions


● Joint: a connection between two or more members in a structure, which
allows for controlled movement or deformation.
● Connection: a method of attaching two or more members in a structure,
which may or may not allow for movement or deformation.

Types of Joints


● Pinned joint: a joint that allows for rotation but prevents translation.
● Fixed joint: a joint that prevents both rotation and translation.
● Partial fixed joint: a joint that restricts but does not prevent rotation or
translation.

Importance