March 26, 2021
|
Seismic,
RISA-3D,
New
With
the
release
of
RISA-3D
v19.0.2,
you
can
now
design
special
concentrically
braced
frames
(SCBF)
as
well
as
buckling
restrained
braced
frames
(BRBF)
according
to
the
capacity-limited
design.
The
objective
of
capacity-limited
design
is
to
ensure
columns
and
beams
in
braced
frames
are
designed
to
resist
the
capacity-limited
seismic
load
effect
based
on
brace
expected
strengths.
The
steps
below
illustrate
the
workflow
for
SCBF
capacity-limited
design
in
RISA-3D.
For
more
information
regarding
design
of
BRBF
in
RISAFloor
and
RISA-3D,
please
refer
to
the
following
article:
Available
codes
for
the
capacity-limited
design
of
members
include:
AISC
360-10
(AISC
341-10)
AISC
360-16
(AISC
341-16)
If
AISC
341-10
is
selected,
the
members
will
be
designed
for
the
lesser
of
the
capacity-limited
and
overstrength
load
combinations.
If
AISC
341-16
is
selected,
the
envelope
load
combination
will
be
used
for
design.
Whether
you’re
integrating
your
model
from
RISAFloor
or
if
you’re
creating
your
model
natively
in
RISA-3D,
you
will
need
to
be
sure
to
assign
the
proper
seismic
design
rules
to
your
members
for
capacity-limited
load
combinations
to
be
considered.
You
can
define
your
seismic
design
rules
in
the
Seismic
Design
Rules
spreadsheet,
and
assign
the
defined
rules
to
members
within
the
Properties
Panel
under…
