June 30, 2011
|
New,
RISASection
In
order
to
model
built-up
or
composite
sections,
RISASection
includes
the
Property
Multiplier,
an
input
value
which
specifies
the
relative
weight
of
the
shape’s
modulus
of
elasticity
to
that
of
the
overall
section.
This
value
can
also
be
used
to
model
a
void
or
a
hole
in
the
shape.
For
instance,
the
section
below
can
be
difficult
to
model
using
only
built
up
shapes.
But
if
you
utilize
the
void
option,
it
becomes
easy
to
model.
Using
concrete
quarter
circle
shapes
to
model
the
voided
areas,
place
these
shapes
at
the
corner
locations
of
the
original
concrete
square
shape.
Access
the
Shape
Layout
Editor
by
selecting
Shape
Layout
from
the
Section
menu.
In
this
menu,
you
can
manually
change
the
Multiplier
value
to
1
for
the
rectangle
and
to
-1
for
all
four
of
the
quarter
circle
shapes.
Making
these
shapes
negative
will
void
out
the
corners
of
the
original
concrete
square
and
thereby
update
the
Properties
results
to
reflect
the
reduced
section…