COSC 421 Final Exam 167 questions all
answered.
COSC 421 Final Exam 167 questions all
answered.
The requirements for the building foundation will most likely be found on which sheet in
a drawing set? - ANSWER-S101
Construction Documents = Drawings + Construction Contract + ....... - ANSWER-
Specifications
The General Notes sheets are generally located at the beginning of the sheet set. -
ANSWER-True
All of the following effect the magnitude of wind loads on buildings except. - ANSWER-
Weight of the building
Earthquake induced forces is an example of gravity loading on a structure. - ANSWER-
False
Per the International Building Code, a fire station is required to be designed as what
Risk Category? - ANSWER-IV
The exposure category (wind design) for Francis Hall is most nearly.... - ANSWER-
Exposure B
A structure design to the minimum requirements of the building code should not
collapse when subjected to a minimum design earthquake or wind event. - ANSWER-
True
A structure designed and constructed to the minimum requirements of the building
should should not sustain structural damage during a design earthquake or wind event.
- ANSWER-False
Earthquake forces are a function of the building mass (weight) and stiffness, which
means that if a building is located in a high seismic region it is preferable for the building
to be heavy and stiff in order reduce earthquake loads on the structure. - ANSWER-
False
Assuming that the Authority Having Jurisdiction has not amended the wind criteria of
IBC 2015 (which incorporates ASCE 7-10) what is the minimum design wind speed for a
Risk Category II structure located in Miami, Florida? (Hint use the ATC online tool or the
wind maps in Ch. 16 of the IBC (Fig. 1609.3)) - ANSWER-170 MPH
, COSC 421 Final Exam 167 questions all
answered.
Wind loads increase the higher up from ground surface they are, since their is a
reduction is friction with the ground. - ANSWER-True
Un-reinforced concrete is a ductile material. - ANSWER-False
half moon depicts which type of free body diagram condition - ANSWER-simply-
supported beam with a uniformly distributed load
Given the same cross-section, loading condition and span....a steel beam will deflect
less than an aluminum beam. - ANSWER-True
Given the same cross-section, loading conditions and span....steel with a yield strength
of 36 ksi will deflect more than steel with a yield strength of 50 ksi. - ANSWER-False
(yield strength does not help for deflection)
The strength reduction factor for a concrete section controlled by flexure is 0.9 where for
compression it is 0.75, what is best explanation for the reason between the different
factors. - ANSWER-A concrete member that fails via flexure will provide greater warning
signs of the overload than if it fails by shear.
Per ACI 318, what is the thinnest section allowed for a cantilevering non-prestressed
beam that is spanning 10'? - ANSWER-15"
Reinforcement covers dictated by structural drawings are minimums and can be
increased at the contractor's options without detrimental effects? - ANSWER-False
The reason for ACI 318 specifying minimum tension reinforcement in concrete flexural
members can best be described as. - ANSWER-To guarantee that the flexural strength
of the reinforced member is larger than the uncracked concrete section, since if not,
when the beam approached it's failure load, there would not be warning signs of the
impending failure.
The reason for ACI 318 specifying maximum tension reinforcement ratios can best
described as. - ANSWER-To ensure that the members fails via tension in the
reinforcement, a ductile failure mode in lieu of crushing of the concrete which is not a
ductile failure mode.
On a simply-supported beam with uniformly distributed loading, the shear is greatest at -
ANSWER-at the supports
Steel shear reinforcement (stirrups) is required in all concrete flexural members
regardless of the member type, demand and shear capacity of the concrete. -
ANSWER-False
answered.
COSC 421 Final Exam 167 questions all
answered.
The requirements for the building foundation will most likely be found on which sheet in
a drawing set? - ANSWER-S101
Construction Documents = Drawings + Construction Contract + ....... - ANSWER-
Specifications
The General Notes sheets are generally located at the beginning of the sheet set. -
ANSWER-True
All of the following effect the magnitude of wind loads on buildings except. - ANSWER-
Weight of the building
Earthquake induced forces is an example of gravity loading on a structure. - ANSWER-
False
Per the International Building Code, a fire station is required to be designed as what
Risk Category? - ANSWER-IV
The exposure category (wind design) for Francis Hall is most nearly.... - ANSWER-
Exposure B
A structure design to the minimum requirements of the building code should not
collapse when subjected to a minimum design earthquake or wind event. - ANSWER-
True
A structure designed and constructed to the minimum requirements of the building
should should not sustain structural damage during a design earthquake or wind event.
- ANSWER-False
Earthquake forces are a function of the building mass (weight) and stiffness, which
means that if a building is located in a high seismic region it is preferable for the building
to be heavy and stiff in order reduce earthquake loads on the structure. - ANSWER-
False
Assuming that the Authority Having Jurisdiction has not amended the wind criteria of
IBC 2015 (which incorporates ASCE 7-10) what is the minimum design wind speed for a
Risk Category II structure located in Miami, Florida? (Hint use the ATC online tool or the
wind maps in Ch. 16 of the IBC (Fig. 1609.3)) - ANSWER-170 MPH
, COSC 421 Final Exam 167 questions all
answered.
Wind loads increase the higher up from ground surface they are, since their is a
reduction is friction with the ground. - ANSWER-True
Un-reinforced concrete is a ductile material. - ANSWER-False
half moon depicts which type of free body diagram condition - ANSWER-simply-
supported beam with a uniformly distributed load
Given the same cross-section, loading condition and span....a steel beam will deflect
less than an aluminum beam. - ANSWER-True
Given the same cross-section, loading conditions and span....steel with a yield strength
of 36 ksi will deflect more than steel with a yield strength of 50 ksi. - ANSWER-False
(yield strength does not help for deflection)
The strength reduction factor for a concrete section controlled by flexure is 0.9 where for
compression it is 0.75, what is best explanation for the reason between the different
factors. - ANSWER-A concrete member that fails via flexure will provide greater warning
signs of the overload than if it fails by shear.
Per ACI 318, what is the thinnest section allowed for a cantilevering non-prestressed
beam that is spanning 10'? - ANSWER-15"
Reinforcement covers dictated by structural drawings are minimums and can be
increased at the contractor's options without detrimental effects? - ANSWER-False
The reason for ACI 318 specifying minimum tension reinforcement in concrete flexural
members can best be described as. - ANSWER-To guarantee that the flexural strength
of the reinforced member is larger than the uncracked concrete section, since if not,
when the beam approached it's failure load, there would not be warning signs of the
impending failure.
The reason for ACI 318 specifying maximum tension reinforcement ratios can best
described as. - ANSWER-To ensure that the members fails via tension in the
reinforcement, a ductile failure mode in lieu of crushing of the concrete which is not a
ductile failure mode.
On a simply-supported beam with uniformly distributed loading, the shear is greatest at -
ANSWER-at the supports
Steel shear reinforcement (stirrups) is required in all concrete flexural members
regardless of the member type, demand and shear capacity of the concrete. -
ANSWER-False
