Structural Theory Analysis: Idealized Structures

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Why can an exact analysis of a structure never be carried out?

Because the loadings and material strengths can only be estimated. (correct)

Because the structural engineer lacks the ability to model or idealize a structure.

Because the points of application for the loadings cannot be estimated.

Because the strength of the materials composing the structure cannot be estimated.

What is the purpose of developing the ability to model or idealize a structure?

To perform a practical force analysis of the members. (correct)

To make the structure more visually appealing.

To reduce the cost of fabricating joints.

To allow for slight rotation in the support connections.

In what ways are pin connections, roller connections, and fixed joints different?

In their cost of fabrication.

In their aesthetic appeal.

In their ability to support different materials.

In the degree of rotation they allow. (correct)

Why are most timber structures assumed to be pin connected?

Because bolting or nailing them will not sufficiently restrain them from rotating with respect to each other. Signup and view all the answers

What are fixed joints also known as?

Rigid connections Signup and view all the answers

Why is a fixed joint more expensive to fabricate compared to pin or roller connections?

Because it does not allow any relative rotation between the connected members. Signup and view all the answers

What is the effect of a smooth surface on a member in contact with it?

It exerts a normal force but does not prevent rotation of the member Signup and view all the answers

What will a fixed support exert on a member at the point of connection?

Three force components and a moment Signup and view all the answers

How does a smooth surface affect the rotation of a member?

It allows rotation and prevents translation of the member Signup and view all the answers

What happens when a member is in contact with a smooth surface?

It exerts a normal force but allows rotation of the member Signup and view all the answers

What kind of support develops only one unknown at the point of connection?

A roller support Signup and view all the answers

How many force components and moments does a fixed support exert on a member?

Three force components and a moment Signup and view all the answers

What does a pin support idealize as?

A typical pin support Signup and view all the answers

What is the effect of a smooth surface on a member in contact with it?

It allows rotation but prevents translation of the member Signup and view all the answers

What does a pin support idealize as?

A typical pin support Signup and view all the answers

What kind of support develops only one unknown at the point of connection?

A pin support Signup and view all the answers

Structural Theory Analysis: Idealized Structures

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Questions and Answers

Why can an exact analysis of a structure never be carried out?

What is the purpose of developing the ability to model or idealize a structure?

In what ways are pin connections, roller connections, and fixed joints different?

Why are most timber structures assumed to be pin connected?

What are fixed joints also known as?

Why is a fixed joint more expensive to fabricate compared to pin or roller connections?

What is the effect of a smooth surface on a member in contact with it?

What will a fixed support exert on a member at the point of connection?

How does a smooth surface affect the rotation of a member?

What happens when a member is in contact with a smooth surface?

What kind of support develops only one unknown at the point of connection?

How many force components and moments does a fixed support exert on a member?

What does a pin support idealize as?

What is the effect of a smooth surface on a member in contact with it?

What does a pin support idealize as?

What kind of support develops only one unknown at the point of connection?

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