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Movement Joints in Buildings

Movement Joints in Buildings

Movement joints in buildings are essential design elements that accommodate inevitable motions caused by various factors such as temperature changes, moisture content variations, and structural deflections. These motions, if not considered in design and construction, can lead to unsightly or dangerous damage. Movement joints are incorporated in different forms to manage these stresses and allow materials to move without causing distress.
The simplest type of movement joints, working joints, are...

Introduction to Joints

Introduction to Joints

The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no movement.

Structural Classification of Joints

Structural Classification of Joints

Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
A fibrous joint is where the adjacent bones are united by fibrous connective...

Method of Joints: Problem Solving II

Method of Joints: Problem Solving II

Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.

Structural Joints: Synovial Joints

Structural Joints: Synovial Joints

Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...

Method of Joints: Problem Solving I

Method of Joints: Problem Solving I

The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint. Consider a truss structure with two forces of 20 N and 10 N acting at joints C and D, respectively. The method of joints can be used to determine the forces FCB, FDC,...

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Related Experiment Video

Updated: Jun 11, 2026

Creation of a Knee Joint-on-a-Chip for Modeling Joint Diseases and Testing Drugs

Creation of a Knee Joint-on-a-Chip for Modeling Joint Diseases and Testing Drugs

Published on: January 27, 2023

A minimal architecture for joint action.

Cordula Vesper¹, Stephen Butterfill, Günther Knoblich

¹Centre for Cognition, Donders Institute for Brain, Cognition, & Behaviour, Radboud University Nijmegen, The Netherlands. c.vesper@donders.ru.nl

Neural Networks : the Official Journal of the International Neural Network Society

|July 6, 2010

Summary

This summary is machine-generated.

This study proposes a minimal architecture for joint action, detailing essential representations and processes like action monitoring and prediction. It explores how this framework aids coordination and has implications for human-machine interaction and understanding collective behavior.

Related Experiment Videos

Last Updated: Jun 11, 2026

Creation of a Knee Joint-on-a-Chip for Modeling Joint Diseases and Testing Drugs

Creation of a Knee Joint-on-a-Chip for Modeling Joint Diseases and Testing Drugs

Published on: January 27, 2023

Area of Science:

Cognitive Science
Social Psychology
Human-Computer Interaction

Background:

Joint action, or the coordination of actions between individuals, is fundamental to social interaction.
Understanding the cognitive underpinnings of joint action is crucial for fields ranging from psychology to robotics.
Existing models often lack a unified, minimal framework for analyzing the core requirements of collaborative behavior.

Purpose of the Study:

To propose a minimal cognitive architecture for enabling joint action in individual agents.
To identify key processes (representations, action monitoring, action prediction) and coordination strategies.
To explore the implications of this architecture for understanding emergent joint action and facilitating human-machine interaction.

Main Methods:

Theoretical modeling: Proposing a minimal cognitive architecture.
Literature review: Synthesizing existing evidence supporting the proposed architecture.
Conceptual analysis: Discussing open empirical questions and interfaces with other approaches.

Main Results:

A minimal architecture for joint action is defined, outlining necessary cognitive processes.
The architecture emphasizes representations, action monitoring, and action prediction for coordination.
Evidence supporting the architecture is discussed, alongside areas for future empirical investigation.

Conclusions:

The proposed minimal architecture provides a foundational framework for understanding joint action.
This framework has significant implications for human-machine interaction and the study of emergent coordination.
Further empirical research is needed to fully validate and refine the proposed cognitive architecture.