 Awnings
Patio Covers engineered
Patio
Covers
conform
to National
Building
Codes
in
37 States.
Below
you
will
find
a
list
that gives you specifications that the patio needs to slope
for
a
given
span
and
maximum
spanable
distance
per
Live
Load
to
pass
inspection
for
most
parts
of
the
United
States.
Your
local Building
Department
can
and
will
inform
you
as
to
the
Snow
and
Wind
rating
codes
for
your
area. You want to tell them it is an Open Aluminum Patio
Cover. These
will
be
the
same
as
for
your
local
company.
They
should
have
this
information
close
at
hand.
Remember
this
information
is for
your
benefit.
A
local
non-direct
third
party
is
your
best
attempt
as
to
what
is
required
in
your
area, ie;
if
possible
your
local
building
dept.---you
and
your
families
safety
is
a
concern
of
ours
also.
Span
in
general
is
the
unsupported
distance
between
the
structure
and
the
raingutter - header
or
an
intermediate
positioned
"C" or "I"
beam.)
Slope,
that
is
required
minimum
in
inches
of
drop
( .40"
per
foot
of
projection
[allow
½"
per
foot
of
projection
as
a
safe
margin
)
An
intermediate
positioned
"C"
or
"I"
beam
with
posts
can
be
placed
at
mid-span
of
projection.
By
doing
this
you
will
reduce
the
span
between
supports
and
this
will
allow
for
thinner
pans
to
establish
your
projection.
This sometimes will
require
you
to
install concrete footings
for
the
patio
cover
posts.
Our Patio
and
Carports
can
be
designed
for
Snow
Loads
of
up
to
60
lbs.
per
square
foot
and
Wind
Factor
of
up
to
90mph.
Snow
weights
approximately
5.25 to 5.5 pounds
per
cubic
foot
of
snow
(
12"
x
12"
x
12"
)
which
is
+/-
=
1"
in
depth
of
water
on
a
12"
x
12"
area.
Some
areas
may
have
a
slightly
higher
water
content
than
1".
The
Patios
and
Carports
Designed
slopes
below
are
based
on
the 2 1/2"
Super 6 Pan ( Alumwood Patio Covers).
Minimum
Inches
of
Slope
required
for a projection ( the distance you want your awning to
extend from your home )
=
3 -1/4 ",
9'
=
3
-
5/8",
10'
=
4"
,
11'
=
4
-
7/16
"
,
12'
=
4
-
7/8"
,
13'
=
5
-1/4",
14'
=
5-
5/8
"
,
15'
=
6"
,
16'
=
6-
7/16
". Remember your concrete patio slopes also.
Examples are
for a 10 pound per square foot and 90 mph wind factor design:
Patio pan
thickness for the following projections .018
will
span
up
to 13 '- 3",
.024
up
to 16' - 3",
.032
up
to 18'- 8" and .036
up
to 19' - 4". The .036 pans are available in smooth only. We
can
engineer
up
to
90
MPH
Wind
Factor.
This
may
seem
quite
an
extreme
for
wind
but
this
is
designed
to
protect
against
the
Blustery
umbrella
effect
of
the
wind.
Note:
Exposure "B" has terrain which has
buildings, forest or surface irregularities covering at least 20 percent of
the ground level area extending one mile or more from the site.
Exposure "C" has terrain which
is flat and generally open. Extending one-half mile or more from the
site, in any full quadrant.
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