When using Strength Reduction Factors, what is the probability the structure will fail in
a given year?
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1/100,000
Concrete is __________ in compression and ___________ in tension
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strong, weak
True/False: It is conservative (i.e., safer) to ignore strength reduction factors in
reinforced concrete design.
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False. Do not ignore strength reduction factors.
True/False: The size of a reinforcing bar (e.g., #6) is approximately equal to its
diameter in inches divided by 8.
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False. The diameter of the bar is equal to the size (e.g., #6) divided by 8.
True/False: A "limit state" is a condition for which a structure is unsatisfactory.
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True. The limit state is when the structure starts failing.
List the typical values for the following terms for steel reinforcement
1) Specified Yield Stress
, 2) Tested Yield Stress
3) Tested tensile strength
4) Modulus of Elasticity
5) Creep
6) Thermal Expansion
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1) fy=60 ksi
2) Higher than specified yield stress
3) Higher than tested yield stress
4) 29,000 ksi
5) None
6) Same as concrete
True/False: The tensile strength and compressive strength of concrete are
approximately equal.
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False. Concrete's compressive strength is much greater than its tensile
strength.
Compare/contrast the tested and minimum specified concrete compressive strength.
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Minimum specified concrete compressive strength will always be less than
the tested strength for safety reasons, want to play it safe
a given year?
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1/100,000
Concrete is __________ in compression and ___________ in tension
,Give this one a try later!
strong, weak
True/False: It is conservative (i.e., safer) to ignore strength reduction factors in
reinforced concrete design.
Give this one a try later!
False. Do not ignore strength reduction factors.
True/False: The size of a reinforcing bar (e.g., #6) is approximately equal to its
diameter in inches divided by 8.
Give this one a try later!
False. The diameter of the bar is equal to the size (e.g., #6) divided by 8.
True/False: A "limit state" is a condition for which a structure is unsatisfactory.
Give this one a try later!
True. The limit state is when the structure starts failing.
List the typical values for the following terms for steel reinforcement
1) Specified Yield Stress
, 2) Tested Yield Stress
3) Tested tensile strength
4) Modulus of Elasticity
5) Creep
6) Thermal Expansion
Give this one a try later!
1) fy=60 ksi
2) Higher than specified yield stress
3) Higher than tested yield stress
4) 29,000 ksi
5) None
6) Same as concrete
True/False: The tensile strength and compressive strength of concrete are
approximately equal.
Give this one a try later!
False. Concrete's compressive strength is much greater than its tensile
strength.
Compare/contrast the tested and minimum specified concrete compressive strength.
Give this one a try later!
Minimum specified concrete compressive strength will always be less than
the tested strength for safety reasons, want to play it safe
