...
Regular
...
vs.
...
projected
...
loading
...
Loading
...
differs
...
when
...
applied
...
to
...
either
...
Global
...
Axes
...
or
...
Projected
...
Global
...
Axes
...
in
...
that
...
projected
...
loading
...
is
...
distributed
...
along
...
the
...
horizontal
...
projection
...
of
...
an
...
inclined
...
member.
...
In
...
this
...
case,
...
loading
...
is
...
scaled
...
by
...
the
...
cosine
...
of
...
the
...
incline
...
angle
...
such
...
that
...
the
...
gravity
...
component
...
is
...
applied.
...
For
...
example,
...
take
...
an
...
inclined
...
member
...
which
...
is
...
subjected
...
to
...
ice
...
and
...
snow
...
loads.
...
Here,
...
a
...
1kN/m
...
ice
...
load
...
is
...
applied
...
to
...
Global
...
Axes
...
such
...
that
...
it
...
acts
...
along
...
the
...
member,
...
and
...
a
...
1kN/m
...
snow
...
load
...
is
...
applied
...
to
...
Projected
...
Global
...
Axes
...
such
...
that
...
its
...
gravity
...
component
...
is
...
present.
...
This
...
is
...
realistic
...
in
...
that
...
snow
...
loads,
...
dependent
...
only
...
upon
...
the
...
horizontal
...
span,
...
align
...
with
...
the
...
gravity
...
direction
...
regardless
...
of
...
incline.
...
The
...
left
...
side
...
of
...
Figures
...
1
...
and
...
2
...
(Global
...
Axes)
...
show
...
the
...
load
...
and
...
reaction
...
of
...
this
...
ice
...
load
...
on
...
an
...
inclined
...
member
...
which
...
is
...
released
...
from
...
flexure.
...
The
...
right
...
side
...
(Projected
...
Global
...
Axes)
...
shows
...
that
...
of
...
the
...
snow
...
load.
...
Differences
...
are
...
apparent.
