COMPRESSION MEMBERS - Eds

Question 1

Aside from tables/charts and equations, k factors may be obtained using ——-

Answer 1

NOMOGRAPHS

Question 2

The limiting width to thickness ratio ƛr of a plate element subject to compression force is called —————–

Answer 2

NON-COMPACT LIMIT

Question 3

The point of load application at which no torsional behavior is induced in the member is called ————-

Answer 3

None of the Above or Shear Center?

Question 4

For local buckling failure on columns, the elements subject to local loads must experience ————-

Answer 4

Uniform Compression

Question 5

ƛc is a dimensionless parameter representing the LRFD parameter for ———–

Answer 5

Slenderness

Question 6

Flame cutting of steel plates introduces compressive stresses at the points of cutting —

Answer 6

T

Question 7

The local shape factor Qs is based on average stress developed in the plate element while the local shape factor Qa is based on —–

Answer 7

Effective Area

Question 8

Built up shapes are more stable than rolled shapes in terms of ———

Answer 8

Local Buckling F

Question 9

Flexural Torsional Buckling is more commonly known as ——- in beams.

Answer 9

Lateral Torsional Buckling

Question 10

TRUE OR FALSE

The more axis of symmetry for a section, the higher the risk of falling in torsion.

Answer 10

True

Question 11

Flexural buckling limit states includes elastic, inelastic, and ——–

Answer 11

Yielding

Question 12

The following are factors affecting the effective length factor k except for _______.

Answer 12

None of the above

Question 13

The part of the web cut from I shaped sections to produced T-shaped is called ——–

Answer 13

Stem

Question 14

Slenderness ratio is measured by dividing —– over radius of gyration

Answer 14

Effective Length

Question 15

Other name for a braced column is __________ column.

Answer 15

Non sway

Question 16

Other name for a sway column is ___________ column.

Answer 16

Unbraced

Question 17

The reason for a transition curve in between the elastic and plastic stage for a column behavior is mainly attributed to ——–

Answer 17

Residual Stress

Question 18

How many stiffened section does a HSS rectangular section has?

Answer 18

4

Question 19

When the actual element width-thickness ratio exceeds the limit, the element is tagged as ———

Answer 19

Slender Element

Question 20

Stiffened elements are those which has support at ——–

Answer 20

Both Ends

Question 21

Weak axis buckling is critical for columns under ———–

Answer 21

Axial compressive load only

Question 22

Flexural torsional buckling is partly attributed to a phenomenon known as ———-

Answer 22

Shear Flow

Question 23

For non sway frames, the value of k ranges from – to –

Answer 23

0 to 1

Question 24

The point where a shear force acts without producing a twist known as the ———-

Answer 24

Shear Center

Question 25

TRUE OR FALSE Cc is a dimensionless parameter for slenderness in ASD.

Answer 25

True

Question 26

A 2in x 2in x ¼ angle bar with a length of 24 inches has width-thickness ratio of ___

Answer 26

8

Question 27

TRUE OR FALSE Residual stress are compressive where the rate of cooling is fast

Answer 27

True

Question 28

How many number of support does an unstiffened elements has which makes it less stable than a stiffened element?

Answer 28

1

Question 29

The value of the shape factor Q decreases as the width-thickness ratio ____

Answer 29

Increases

Question 30

TRUE OR FALSE Residual stress are tensile at the joints but not at the free end

Answer 30

True

Question 31

TRUE OR FALSE Inelastic column buckling is common for long slender columns

Answer 31

False

Question 32

A pinned support resembles a beam with stiffness equivalent to ___

Answer 32

Zero (0)

Question 33

Projecting elements from FAP are unstiffened elements where Fap means ___

Answer 33

None of the Above (Flange, Angle, and Plates)

Question 34

How many unstiffened elements does a wide flange section has ___

Answer 34

4

Question 35

The effective area of a stiffened elements is computed by subtracting the ineffective area from the _____

Answer 35

Gross Area

Question 36

The shape factor Qa represents the ____

Answer 36

Ratio of effective area to gross area

Question 37

The shape factor Qs represent the _____

Answer 37

Ratio of effective stress to max stress

Question 38

When the actual width to thickness ratio is less than the limiting value set forth on the code, then the column will not experience ____

Answer 38

Local Buckling

Question 39

TRUE OR FALSE Shanley concept introduces the critical load at which buckling begins and this is less the critical load of Engesser.

Answer 39

False

Question 40

Which of the shapes is more vulnerable to pure torsion?

Answer 40

Pipe

Question 41

TRUE OR FALSE For sway frame the value of k ranges from 0 to infinity.

Answer 41

False

Question 42

TRUE OR FALSE Unstiffened elements absorbs higher stresses at rigid ends

Answer 42

True

Question 43

Which of the shapes is more vulnerable to lateral torsional buckling?

Answer 43

Unequal Angle

Question 44

A fixed support resembles a beam with stiffness equivalent to

Answer 44

Infinity

Question 45

TRUE OR FALSE The slender limit for stiffened elements local buckling is always greater than the slenderness limits for unstiffened local buckling.

Answer 45

True

Question 46

Shape factor Q for slender elements is less than 1 while shape factor Q for non slender elements is _____

Answer 46

Equal to 1