August 2, 2011
|
RISAFloor,
New,
Boundary Conditions
Column
boundary
conditions
are
set
in
RISAFloor
per
the
Splice
Type
that
you
have
set
in
the
Columns
spreadsheet.
For
any
column
at
the
lowest
floor
level,
the
Splice
checkbox
will
automatically
be
checked,
indicating
that
a
boundary
condition
will
be
set
at
the
base.
You
may
set
the
boundary
condition
to
either
pinned
or
fixed.
This
is
controlled
through
the
Splice
Type.
Setting
the
Splice
Type
to
Moment
creates
a
fixed
boundary
condition;
setting
it
to
Shear
creates
a
pinned
boundary
condition.
After
solving
your
model
and
taking
it
into
RISA-3D
via
the
Director
tool,
you
will
be
able
to
verify
these
boundary
conditions.
Note:
After
the
initial
export
into
RISA-3D,
the
splice
type
is
no
longer
linked
to
the
model.
Therefore,
you
have
the
ability
to
modify
these
boundary
conditions
once
in
RISA-3D.
This
way,
you
have
the
freedom
to
release
any
restraint
(in
each
of
the
six
directions),
rather
than
selecting
just
perfectly
pinned
or
perfectly
fixed
for
your
lateral
analysis…