March 31, 2016
|
Seismic,
New,
RISAConnection,
Brace Connection
RISAConnection
v6
has
introduced
the
ability
to
design
vertical
brace
connections
per
the
seismic
design
provisions
of
the
AISC
341-10
Seismic
Design
Manual.
Now
you
can
designate
Vertical
Diagonal
Brace
Connections
and
Vertical
Chevron
Brace
Connections
as
either
Ordinary
Concentric
Braced
Frames
(OCBF)
or
Special
Concentric
Braced
Frames
(SCBF).
To
create
the
model:
1.
First,
select
the
type
of
vertical
brace
connection
that
you
want
to
use.
2.
On
the
General
tab
of
Connection
Properties,
select
your
type
of
Seismic
System.
3.
Enter
in
the
other
applicable
variables
for
seismic
design.
OCBF:
Brace
Length,
Brace
Length
Effective
Length
Factor,
K,
and
the
Ca
Beam
Ratio
which
is
used
to
calculate
the
beam
width
to
thickness
ratio
per
AISC
341-10
Table
D1.1.
SCBF:
Gusset
Plate
Clearance
method,
Brace
Length
Effective
Length
Factor,
K,
and
the
Ca
Beam
Ratio
which
is
used
to
calculate
the
beam
width
to
thickness
ratio
per
AISC
341-10
Table
D1.1.
4.
Once
you
have
designated
the
connection
as
seismic,
you
will
also
see
that
you
have
inputs
for
Brace
Tensile
Axial
force
and
Brace
Compressive
Axial
RISAConnection
will
design
braces
for
both
tension
and
compression
forces
at
the
same
time.
5.
The
results
report
will
reflect
the…