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CM 3504 - Concept Questions > Concept Questions for Final > Flashcards

Concept Questions for Final Flashcards

1
Q

Wood has higher design values when the load being considered has a(n) _______ [something].

A

Shorter

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2
Q

The dividing line between sand and silts/clays is the No. ______ sieve

A

200

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3
Q

The dividing line between sand and gravel is the No. ______ sieve.

A

4

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4
Q

Soil that has a water content less than the plastic limit is described as behaving like ________.

A

Cheddar cheese

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5
Q

Soil that has a water content between the liquid limit and plastic limit is described as behaving like _________.

A

Silly putty

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6
Q

Stirrups in reinforced concrete beams help to resist __________.

A

Shear

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7
Q

Steel that has undergone permanent deformation, due to a load, has reached or entered its __________ of the stress and strain diagram.

A

Plastic range

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8
Q

For soils, the Atterberg Limits are stated in:

A

% Moisture Content

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9
Q

Which material is the stiffest according to typical values of Modulus of Elasticity (E)?

A

Steel

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10
Q

What is the acronym of the wood design standard published by the American Forest and Paper Association?

A

NDS

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11
Q

Name the organization that is the chief source of information for the design of steel structures in the U.S.A.

A

American Institute of Steel Construction

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12
Q

The organization that specifies minimum design loads for buildings and other structures, which are incorporated into a buildings codes?

A

American Society of Civil Engineers

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13
Q

What are the two load combinations to be calculated when using LRFD, if the only loads we are considering are dead loads and live loads?

A

1.2 (Dead Load) + 1.6(Live Load) and 1.4 (Dead Load)

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14
Q

A slightly _________ condition is the optimal design situation for reinforced concrete beams.

A

Under-reinforced

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15
Q

The distance between the reinforcing steel and the outer edge of a concrete member is called?

A

Clearance

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16
Q

Wood has higher design values when the load being considered has a ______________

A

Shorter

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17
Q

What material is the stiffest according to typical values of Modulus of Elasticity

A

Steel

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18
Q

Cheif source of information for the design of steel structures

A

AISC

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19
Q

acronym for wood design standard published by the American Forest and Paper Association

A

NSD

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20
Q
  • column buckling

- allowable stress based upon the slenderness ratio

A

Most important design consideration for steel columns

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21
Q

-Makes sure outside stresses (max bending stresses) do not exceed allowable stress. Theses maximum bending stresses are dependent on the maximum moment

A

Flexural design

22
Q

Twisting effect that occur when the beam is not loaded through the shear center

A

Torsional Buckling

23
Q

Publishes steel design manual

A

AISC

24
Q

Modulus of elasticity for steel

A

29,000,000 psi

25
Q

Beams resist bending by

A

their ability to develop tension and compression stresses that resist bending stress

26
Q
  • occurs in slender bar elements overloaded in compression

- caused by lateral deflection to relieve aial stress

A

Buckling

27
Q
  • occurs in stout bar elements that are overloaded in compression
  • caused by exceeding yield stress
A

Crushing

28
Q

Moment of inertia dictates

A

resistance to bending

29
Q

Timber columns Failure modes

A
  • yielding
  • crushing
  • buckling
30
Q

What is the stress caused by pulling wood fibers apart in longitudinal direction

A

Tension parallel to the grain

31
Q

Allowable Stress Design

Design procedure where actual stress and allowable are determined and compared. Factor of safety incorporated

A
32
Q

Applied stress always causes

A

deformation

33
Q

Deflection important for

A

important design consideration for timber beams

34
Q

Live Loads associated with

A

use and occupancy of buildings

35
Q

Code that requires critical facilities such as fire stations and hospitals to be build to a higher standard

A

ASCE-7

36
Q

Moment of inertia for a structural shape is…

A

the distribution of an object’s mass from the neutral axis

37
Q

Torsional Buckling

Twisting effect that occur when the beam is not loaded through the shear center

A
38
Q

Steel beams failure modes

  • lateral buckling
  • torsional buckling
  • bending
  • shear
A
39
Q

Meaning of C12X20.7 steel designation

A

C is steel shape, 12 is the nominal depth, and 20.7 is pounds per foot.

40
Q

Publishes steel design manual

A

AISC

41
Q

In allowable stress design for steel columns, how is the factor of safety accounted for

A

included in the value for allowable stress

42
Q

Modulus of elasticity for steel

A

29,000,000 psi

43
Q

Beams resist bending by

A

their ability to develop tension and compression stresses that resist bending stress

44
Q

Moment of inertia dictates

A

resistance to bending

45
Q

What is the stress caused by pulling wood fibers apart in longitudinal direction

A

Tension parallel to the grain

46
Q

Applied stress always causes

A

deformation

47
Q

Temporary loads associated with building structures and function.

A

Environmental loads

48
Q

Live Loads associated with

A

use and occupancy of buildings

49
Q

Code that requires critical facilities such as fire stations and hospitals to be build to a higher standard

A

ASCE-7

50
Q

To satisfy horizontal equilibrium;

A

resultant tension and compression forces must be equal

51
Q

Moment of inertia for a structural shape is…

A

the distribution of an object’s mass from the neutral axis

CM 3504 - Concept Questions (1 decks)

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