CSA S832 Seismic Risk Reduction of Operational
Buildings Exam Practice Questions And Correct
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The detail shown below is to be used in an area of seismic
risk to (1) transfer vertical load from the framing to the wall
and (2) anchor the wall to the diaphragm for seismic load.
Which of the following statements is correct? - Answer-
The detail is acceptable for transferring vertical load but
unacceptable for anchoring the wall. The anchorage must
be positive and direct, such as by means of metal straps.
In the detail shown, there is no joist anchor metal straps.
A membrane inflated by air pressure encloses an occupied
space and is anchored to a reinforced concrete ring at its
perimeter. Which of the following statements is correct? -
Answer-The ring is in compression. And The membrane
tends to lift off the ring. A membrane can only resist
tension. The vertical component of the tension in the
membrane is an uplift force, while the horizontal
component compresses the perimeter ring.
The earthquake regulations in the International Building
Code are intended to make buildings resistant to which of
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the following? - Answer-Ground shaking. The purpose of
the earthquake regulations in the International Building
Code is to make buildings resistant to ground shaking
only, not to earth slides, subsidence, settlement, faulting in
the vicinity of the structure, or soil liquefaction.
An existing storage facility, designed and constructed in
accordance with the latest edition of the IBC, is to be
converted to a restaurant seating 200 people. The
building's lateral force resisting system must be adequate
to resist how much more seismic force than in the original
design. - Answer-No additional seismic force. In this case,
both the original storage occupancy and the restaurant
occupancy have an importance factor of 1.0. Therefore, no
additional design seismic force is required
The roof of a convention hall has a column-free space that
is 150 feet square. Two systems being considered are a
space frame and a system of one-way parallel trusses.
What are the advantages of the space frame over the
parallel trusses? - Answer-The space frame tends to
deflect less. The space frame can be made shallower.
Loads are resisted by all the members of the space frame.
The space frame spans in two directions.
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The deflection of a reinforced concrete beam is affected by
which of the following? - Answer-Deflection is the
movement that a beam undergoes when subject to load
The immediate deflection is determined by 4 factors: the
load supported & duration of the load, the span of the
beam, the stiffness of the concrete, measured by its
modulus of elasticity & the moment of inertia of the beam
section
Which of the following statements about long-span open
web steel joists is correct? - Answer-Long-span joists
should be provided with sufficient camber or pitch to
prevent the accumulation of rainwater.
A parking structure is to have a clear span of 62 feet.
Which of the following systems are likely to be practical
and economical? - Answer-Posttensioned concrete girders
with pretensioned concrete planking over. Another system
is Prestressed concrete tees.
In a typical bay size 20 by 50 ft for a bldg. The floor
system consists of a concrete slab connected by studs to
composite structural steel beams and girders. The beam
spacing is 10 feet. Pick correct schemes: 1st 50 ft beams
and 20 ft girders. 2nd 20 ft beams and 50 ft girders. -
Answer-Scheme 1 usually requires more weight of
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structural steel and less depth of construction. when one
dimension of a typical bay is much greater than the other,
the system generally requiring the least amount of material
in the floor framing has short beams and long girders
In the design of long-span buildings, the process that
provides an additional safeguard against design
deficiencies is called - Answer-Peer review. Because long-
span structures are more vulnerable to failure than
conventional structures, their designs are sometimes
checked by independent third party architects or engineers
so called peer review. It provide an additional safeguard
against design deficiencies.
What is the purpose of stirrups in reinforced concrete
beams? - Answer-To resist shear stresses. Concrete has a
certain amount of shear strength. However, if that shear
strength is insufficient to resist the shear stress, web
reinforcement in the form of stirrups must be added.
Complete the following statement. A rigid frame is a -
Answer-frame with rigid joints that is able to resist vertical
and lateral loads. A rigid frame can be made of structural
steel with welded joints, but it can also have bolted joints,