St Flashcards

1
Q

The equilibrium equations alone are sufficient for determining the support reactions and internal forces of indeterminate structures.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The compatibility conditions in structural analysis ensures that the deflections and rotation of all members meeting at a rigid joint are different.

A

False

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The maximum stresses in statically indeterminate structures are generally lower than those in comparable determinate structures.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Statically indeterminate structures, if properly designed, have the capacity for redistributing loads when certain structural portions become overstressed or collapse in cases of overloads due to earthquakes.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The force methods are preferred for the analysis of large and highly redundant structures.

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Im structural analysis, a ________ refers to an extra member or support that can-be removed without affecting the equilibrium of the structures.

A

Redundants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The ________ of a structure refers to its ability to resist overturning, sliding or collapsing under applied loads and forces

A

Structural stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The method of consistent deformation, also known as the ________, is a structural analysis technique.

A

Force Method

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

what is a measure of its resistance to deformation in structures

A

Stiffness

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

To solve statically indeterminate structures, additional _____ or deformation methods are employed.

A

Method

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

When all forces in a structure can be determined from the equilibrium equation

A

STATICALLY DETERMINATE STRUCTURES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Structures having more unknown forces than available equilibrium equations.

A

STATICALLY INDETERMINATE STRUCTURES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Additional equations needed to solve for the unknown reactions

A

SI STRUCTURES

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

The additional support reactions on the beam or shaft that are not needed to keep it in stable equilibrium are called

A

Redundants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Referred to as degree of indeterminacy

A

No of Redundants

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

The max stresses in SI structures are generally lower than those in comparable determinate structures

A

Smaller stresses

17
Q

SI structures generally have higher stiffnesses than those of comparable determinate structures.

A

Greater stiffnesses

18
Q

A system is said to be ____ if the support reactions and the internal forces cannot be determined using statics alone.

A

Indeterminate

19
Q

Consists of more members and more supports

A

Indeterminate structures

20
Q

Support settlements do not cause any stresses in determinate structures, they may, however, induce significant stresses in independence structures, which should be taken into account when designing IS.

A

Stresses due to support settlements

21
Q

Like support settlements, these effects do not cause stresses in determinate structures but may induce significant stresses in indeterminate ones.

A

Stresses due to temperature changes and fabrication errors

22
Q

Most of the structures designed today are SI.

A

True

23
Q

RC buildings are considered in most cases a statically indeterminate structures since the columns beams are considered as continuous member through the joints over the support.

A

True

24
Q

Are generally convenient for analyzing small structures with few redundant.

A

Force methods

25
Q

More systematic, can be easily implemented on computers, preferred for the analysis of large and highly redundant structures.

A

Displacement Methods

26
Q

If the support reactions are concurrent( intersect at a single point) thenthe truss is

A

Externally stable

27
Q

If the support reactions are paralled, then the truss is

A

Externally unstable

28
Q

Introduced by James C Maxwell

A

CDM

29
Q

In this methods, the unknowns are the redundant forces.

A

CDM

30
Q

Angle between deflected beam to the actual beam at the same point

A

Slope of the beam

31
Q

Is defined as the vertical displacement of a point on a loaded beam.

A

Deflection Of a beam