July 2, 2013
|
Loads,
RISAFloor,
New
In
RISAFloor,
there
are
several
different
Load
Categories
that
define
Live
Load.
The
IBC
and
the
ASCE7
both
have
provisions
that
allow
you
to
reduce
the
tributary
area
of
the
Live
Loads.
These
codes
have
equations
that
adjust
the
Live
load
based
on
the
tributary
area
and
usage
(KLL*AT).
In
RISAFloor,
the
Live
Load
Reducible
(LL-Reduce)
calculates
the
reduced
live
load
based
on
the
tributary
area.
Live
Load
Special
(LLS)
should
be
used
when
the
loads
exceed
100
lb/ft2,
there
is
no
live
load
reduction
except
when
there
are
multiple
stories.
This
designation
should
be
used
for
the
following
cases:
Heavy
Live
Loads:
Live
Load
is
considered
a
Heavy
Live
Loads
when
it
exceeds
100
lb/ft2.
Passenger
Vehicle
Garages
There
is
live
loading
associated
with
Assembly
loading
(or
previously
named
Special
Occupancy
Live
Loads).
Assembly
loads
should
be
considered
as
Live
Loads
not
Live
Loads
Special.
In
the
ASCE7-10,
you
cannot
reduce
assembly
live
loads
so
they
would
be
LLS-
Non.
In
IBC
2012,
the
assembly
load
is
not
specified,
and
the
Load
Combination
(f1=1),
so
you
would
need
to
use
LLS-Non.
In
the
previous
years,
you
could
not
reduce
any
loads
under
100psf
and
they
could
not
get
the…
