Compression Members

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 (Shear center)(not sure)

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 S

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 Local buckling

Answer 8

F

Question 9

Flexural Torsional Buckling is more commonly known as _______in beams

Answer 9

LATERAL TORSIONAL BUCKLING

Question 10

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

NOTA

Question 13

The part of the web cut from I shaped sections to produced Tshaped 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 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 an HSS rectangular section has

Answer 18

4

Question 19

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

Answer 19

SLENDER ELEMENT

Question 20

Stiffened elements are those which has

Answer 20

SUPPORT AT 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

Answer 23

0 to 1 (not sure)

Question 24

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

Answer 24

SHEAR CENTER

Question 25

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

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

Residual stress are tensile at the joints but not at the free end

Answer 30

TRUE

Question 31

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

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 eneffective 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

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

Cruciform

Question 41

For sway frame the value of k ranges from 0 to infinity

Answer 41

FALSE

Question 42

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

The slender limit for stiffened elements local buckling is always greater than the slenderness limits for unstiffined 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

Question 47

Given: Fy=100ksi Determine the slenderness ratio kl/r when Fcr=(2/3)Fy at the end of pure elastic stage.

Answer 47

65.5

Question 48

Given: See Figure Question 11. Fy=100ksi Determine the slenderness ratio kl/r when all the fibers become plastic.

Answer 48

18.9

Question 49

Given: See Figure Question 11. Fy=100ksi What is the value of tangent modulus at the transition stage.

Answer 49

(1/8)E

Question 50

Given: See Figure Question 11. Fy=100ksi Determine the slenderness ratio kl/r if there where no residual stress.

Answer 50

53.5

Question 51

elasto plastic stage

Answer 51

23.2