...
How
...
is
...
an
...
accelerogram
...
reading
...
applied
...
to
...
specific
...
structural
...
joints?
...
ANSWER:
...
An
...
acceleration
...
record
...
may
...
be
...
applied
...
to
...
individual
...
nodes
...
by
...
first
...
converting
...
the
...
reading
...
into
...
its
...
equivalent
...
displacement
...
record.
...
This
...
process
...
is
...
described
...
in
...
the
...
...
...
...
article.
...
As
...
described
...
in
...
the
...
...
...
...
article,
...
support
...
...
are
...
then
...
applied
...
to
...
the
...
DOF
...
which
...
correlate
...
with
...
applied
...
displacement.
...
Results
...
are
...
generated
...
through
...
...
...
analysis
...
.
How is an AISC beam analysis performed for a noncomposite truss which supports a composite floor slab and beam system?
ANSWER: AISC beam vibration analysis is available for composite beams by using the composite-design post processor. To study the entire floor system or local systems, such as with a supporting truss assembly, uncheck the Include Lateral Mass Only option through Define > Mass Source, then generate out-of-plane vibration modes. Design may then proceed such that resultant behavior meets the guidelines or requirements of relevant publications or code.