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STEEL DESIGN > FLEXURAL MEMBERS - Marry > Flashcards

FLEXURAL MEMBERS - Marry Flashcards

1
Q

TRUE OR FALSE

A plastic moment is the largest moment which could be developed by the section.

A

TRUE

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2
Q

TRUE OR FALSE

Moment magnification may not be required if first order analysis is used.

A

TRUE

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3
Q

For a simply supported beam (pin ended) with no transverse loads with equal end moments in single curvature, the value of Cb is ______.

A

1.0

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4
Q

The limit for the plastic moment Mp is _____

A

1.5My

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5
Q

The AISC Value for Cm shown below is a modification which must always be ______.
Cm = 0.60 + 0.40 (M1/m2)

A

Less than or equal to 1

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6
Q

When a section behaves in the plastic mode, the neutral axis divides the section into two ________

A

Equal Areas

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7
Q

The interaction equation below is a ______.
PQ/PR + MQ/MR ≤ 1.0

A

Linear

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8
Q

Shape factor is simply a ratio of

A

Either of the two:
Mp/My or Z/S

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9
Q

In a beam-column, a primary moment is caused by the _______

A

Primary loads

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10
Q

What is the relative stiffness of a roller joint (Note: Roller free to move laterally)?

A

Infinity (ꝏ)

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11
Q

The yield strength of a material is based on the ______

A

Upper yield point

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12
Q

A compact section satisfied the condition that the width to thickness ratio of a plate element shall not exceed the limit for width to thickness ratio to ensure that __________

A

The element is capable of large plastic strains prior to local buckling

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13
Q

TRUE OR FALSE

Uniformly compressed elements have no compact limits.

A

FALSE

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14
Q

The value of Fr (residual stress) for welded built-up shapes in the old AISC Code is ______

A

16.5 Ksi

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15
Q

A column is a part of an MRF. Determine the moment magnification factor B1 if the column is braced against side sway. Note: The column is pinned at both ends and the end moments produces reverse curvature.

M1=10 kN-m, M2=20 kN, Pu/Pe=0.55

A

0.89

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16
Q

In the LRFD criteria for strength of flexural members, the main objective is to determine ____

A

Moment Capacity

17
Q

A member or structure is safe if the ratio of the load P with the resistance R is less than or equal to ______.

A

1

18
Q

A moment resisting frame or a beam-column frame is said to be braced if there is no ______.

A

Side sway of lateral translation

19
Q

For a simply supported beam (pin ended) with no transverse loads with equal end moments in reverse curvature, the value of Cb is ______.

A

Cb = 1.32

20
Q

Perfectly plastic behavior means that the material will not rupture at a specified ________.

A

Strain

21
Q

In a beam-column, a secondary moment is caused by the ________

A

Primary deflection

22
Q

A member subjected to some degree of bending and/or flexure is called a ________

A

Beam

23
Q

TRUE OR FALSE

Flexurally compressed elements have non-compact limits.

A

False

24
Q

The number of plastic hinge is determined by the degree of indeterminacy plus ______

A

1

25
Q

TRUE OR FALSE

Moment magnification may not be required if second order analysis is used.

A

True

26
Q

What is the effective length factor K of a column fixed at one end and roller (Free to move laterally) at the other end?

A

2

27
Q

A frame without lateral loads will have no side sway for sure.

A

False

28
Q

The factor that takes into account the non-uniform bending moment distribution over an unbraced length Lb is _____

A

Cb

29
Q

A column is a part of an MRF. Determine the moment magnification factor B2 if the column is not braced against side sway. Note: The column is pinned at both ends and the end moments produces reverse curvature.

M1= 10 kN-m, M2=20 kN, Pu/Pe=0.55

A

2.22

30
Q

What is the relative stiffness of a fixed joint?

A

0

31
Q

TRUE OR FALSE

A stiffened element is more critical than unstiffened element in terms of local buckling.

A

True

32
Q

The range of values of the effective length factor K for sway frame is ______.

A

1 ≤ 𝑘 ≤ 20

33
Q

TRUE OR FALSE

Cm=1 is a conservative value for braced and unbraced frame.

A

True

STEEL DESIGN (10 decks)

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