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Directions `
. Fill in the blanks on pages 2 and 3 with dimensions 2 ('�
and materials which will be used to build the r F
structure. Please print legibly.
Indicate in the check box which- detail from page 3 will be used.
Size and Amount of
tip, WI -m -
(example: Two Wc 41/2")ags @16"O.c.)
Type of decking
(examole: 1 4 or 2 x 6-Trex)
Existing bldg. 36" high guard
with balusters
2x.' - joists
spaced _ '. 'apart
rspaced sothat a 'E
location of the deck allows the emergency escape
window to be fully opened and provides a path not
(example: 2x 10" spaced 24"apart)
3 4 Inch diameter
for walk out basements or patios.
sphere cannot
A roved passthrough
flashing CO
required Beam splices to occur over
x _ beam
posts with 1l/2"bearing
°
°,,•••
(example: (2) 2 x 10 - see detail B)
°:
Attach decking with non corrosive fasteners
B
2x rim j.oist'f
.' (example -2x -;i es eAlternate8l &B2)
°:
°•..,
i
`jKDetail B c
❑ Alternate Detail 131 a�
❑ Alternate Detail B2
Detail A (see page 3)
(seepage 3)
Conditions such as attachment to
cantilevers or veneers. may require
Engineer's approval _ CO
Detail C
(see page 3)
Finished grade
Note: Emergency escape windows are allowed to
be installed under decks and porches provided the
location of the deck allows the emergency escape
window to be fully opened and provides a path not
less than 36" in height to a yard or court. 68" required
'
for walk out basements or patios.
LI x "i posts
spaced apart
(example: 4 x 4 posts spaced 6' apart)
Span
(example: IT- 4") .
Type of siding (existing)
tNK
20e5SJ2e
Note: A plot plan (plan view) showing the dimensions of your project or additions and its relationships to existing buildings or
structures on the property must be included, In addition to project dimensions, your plot plan must also show other details such
as post locations and spacing, joist and beam spans, and any other pertinent Information not shown on the section drawing.
7-7
r Existing building
Approved flashing required
Attach to joists with non -corrosive fasteners
r.71 Attach ledger to existing bldg.
with non -corrosive lag bolts
spaced min. 16" apart. Locate
bolts to penetrate rim joist or
wall studs.
Non -corrosive metal joist hanger
Conditions such as attachment to cantilevers or
veneers may require Engineer's approval
Beam splices to
occur over posts
with 1 1/2" bearing
Non -corrosive
metal joist
hanger
Secure balusters
to beam
Non -corrosive
metal postlbeam
connector
I Secure balusters Full depth 2x solid blocking Secure
to beam balusters to
beam
> J
771
24" max. _I
Beamsplices to Beams lices for
occur ovr posts occur over posts
with 1 1/2" bearing Non -corrosive metal with 1 1/2" bearing Non -corrosive metal
post/beam connector post/beam connector
iff (min.) diameter anchor bolt embedded
7" min. into concrete pier or the equivalent
Finished
I r' �(*
(min.) diameter pier
�— Non -corrosive metal post anchor
8" min. If less than 8", post must be decay resistive
IWC rf�
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ME
New or existing Open guardrails on decks more than 30 inches above grade or a floor below shall
spaced so that a 4 inch diameter sphere cannot pass through.
light required have members
Stairway Notes:.
Stairways shall be not less than 36" in width.
Guardrail1.
Openings for required
2. Stairway rises shall be not greater than 7 314".
guards on the sides
of stair treads shall
3. Stairway treads shall have a minimum run of 10".
4. The length of Run and the height of Riser shall not
not allow a 4 318"
diameter sphere to
vary more than 318" in the entire run of the stair.
g. Stairs are required to be illuminated.
36" min. pass through.
6. Open risers permitted if opening is less than 4".
A not less than 314" but not more than 11/4"
height
7. nosing
shall be provided on stairways with solid risers, and
less than 11".
B. Composite materials (example:Trex) may require 4
stringers
Deck 34-38" above
Less than nosings
6 dia.
Handrail (see details below)
Guardrail required if 10" min. run
more than 30" from nosing
to nosing
Landing same
Open risers
36"Min. width as stairs
less than 4
7 314" max. rise
Finished grade
Handrail Notes:
1. Handralls shall be continuous �n at Icast oris silo of stairs with 4 or more risers.
2. Top of the handrails shall be placed not less than 34 inches nor more than 38 inches above stalr nosings.
3. The handgrip pdrtion of handrails shall be not less than 1-114 Inches nor more than 2114 inches in cross section for non circular handrails,
4. Handrails shall be placed not less than 1-112 Inches from any wall or other surface.
6. Handrails to be returned to wall, post or safety terminal (per 311.5.6.2 IRC)
Type II
I W' - 211W Max.
1 Ila' - 2" Gripabl
Wall or other surface
1 �Iz" min.
Type I
1-412" min. W
126
PART 3:x * Building Planning and Construction
11502.2.20 7
and Table
8502.2.2.7
Deck Ledger
Connection
CHANGE TYPE:
CHANGE SUMMARY: Prescriptive methods for securely attaching a
wood deck to the dwelling structure are now included in the IRC.
2009 CODE: R502.2.2.1 Deck Ledger Connection to Band
oist. For decks supporting a total design load of 50 pounds per
square foot (2394 Pal (40 pounds per square foot (1915 Pal live load
plus 10 pounds per square foot (479 Pal dead load], the connection
between a deck ledger of pressure=preservative-treated Southern Pine,'
incised pressure -preservative -treated Hem -Fir or approved decav-
resistant species and a 2 -inch (51 mm) nominal lumber band foist
bearing on a sill plate or wall plate shall be constructed with 1/2 -inch
(12.7 ml lag screws or bolts with washers in accordance with Table
R502.2.2.1. Lag screws bolts and washers shall be hot -dipped galva-
nized or stainless steel.
Spacing per Table R 502.2.2.1
1/2 in. lag screw or bolt
Deck ledger connection
Changes to the IRC 2009 Edition 8502.2.2.1 AND TABLE R502.2.2.1 ■ Deck Ledger- Connection
= 4n nct. IlPr.k 1Jea(l Load =
Connection Details
127
6'-0" and 6'-1" to 8'-1" to 10'-1" to 12'-1" to 14'-1" to 16'-1" to
Less 8'-0" 10'-0" 12'-0" 14'-0" 16'-0" 1814"
ir's/V-diameter lag screw with 30 23 18 15 13 11 10
15/32" maximum sheathing"
1/z" -diameter bolt with 15/32" 36 36 34 29 24 21 19
?: maximum sheathing
,/z" -diameter bolt with 15/32" 36 36 29 24 21 18 16
maximum sheathing and 112'
s stacked washerPh
For SI.1 inch = 25.4 1 foot = 304.8 mm 1 pound per square foot = 0.0479 kPa.
a. The tip of the lag screw shall fully extend beyond the inside face of the band joist.
b. The maximum gap between the face of the ledger board and face of the wall sheathing shall be 1h." 1
e. Ledgers shall be flashed to prevent water from contacting the house band joist.
d. Lag screws and bolts shall be staggered in accordance with Section R502.2.2.1.1.
e. Deck ledger shallbe minimum 2 X 8 pressure -preservative-treated No 2 grade lumber or other approved materials as establishedbv standard
no;noorinonrartira_ '
h. Wood structural panel sheathing gvosumboard sheathing or foam sheathing not exceeamg 2 men m Tmemess snau oe Peruuueu. xne. Wax—L-
mum distance between the face of the ledger board and the face of the band joist shall be 1 inch.
The lag screws of bolts shall be placed 2 inches (51 mm) in
staggered from the top to the bottom along the horizontal run of the
deck ledger.
R502.2.2.2 Alternate Deck Ledger Connections.. Deck ledger
connections not conforming to Table R502.2.2.1 shall be. designed in
accordance with accepted engineering practice Girders -supporting
deck joists shall not be supported on deck ledgers or band joists. Deck
ledgers shall not be supported on stone or masonry veneer.
R502.2.2.3 Deck Lateral Load Connection. The lateral load
connection required by Section R502 2 2 shall be permitted to be in
accordance with Figure R502.2.2.3. Hold-down tension devices shall
be provided in not less than two locations per deck, and each de-
vice shall have an allowable stress design capacity of not less than
1500 pounds (6672 N).
CHANGE SIGNIFICANCE: In the 2006 IRC, floor construction must
be capable of accommodating all loads, and the deck provisions of
Section R502.2.2 require positive connection to the primary struc-
ture to resist both vertical and lateral loads. Other than those perfor-
mance requirements and the mention that nails subject to withdrawal
were not satisfactory for the connection, the 2006 IRC contained no
8502.2.2.1 and Table 11502.2.2.1 continues
46,
finish surface of ramp slope, shall be not less than 34
inches (864 mm) and not more than 38 inches (965 mm).
Exceptions:
1. The use of a volute, turnout or starting easing
shall be allowed over the lowest tread.
2. When handrail fittings or bendings are used to
provide continuous transition between flights,
the transition from handrail to guardrail, or
used at the start of a flight, the handrail height at
the fittings or bendings shall be permitted to
exceed the maximum height.
R311.7.7.2 Continuity. Handrails for stairways shall be
continuous for the full length of the flight, from a point
directly above the top riser of the flight to a point directly
above the lowest riser of the flight. Handrail ends shall be
returned or shall terminate in newel posts or safety termi-
nals. Handrails adjacentto a wall shall have a space of not
less than 11/z inch (38 mm) between the wall and the
handrails.
Exceptions:
1. Handrails shall be permitted to be interrupted
by a newel post at the turn.
2. The use of a volute, turnout, starting easing or
starting newel shall be allowed over the lowest
tread.
R311.7.7.3 Grip -size. All required handrails shall be of
one of the following types or provide equivalent
graspability.
1. Type I. Handrails with a circular cross section
shall have an outside diameter of at least 11/4 inches
(32 mm) and not greater than 2 inches (51 mm). If
the handrail is not circular, it shall have aperimeter
dimension of at least 4 inches (102 mm) and not
greater than 61/4 inches (160 mm) with amaximum
cross section of dimension of 2 1/4 inches (57 mm).
Edges shall have a minimum radius of 0.01 inch
(0.25 mm).
2. Type H. Handrails with a perimeter greater than
61/4 inches (160 mm) shall have a graspable fine)
recess area on both sides of the profile. The finger
recess shall begin within a distance of 3/4 inch (19
mm) measured vertically from the tallest portion
of the profile and achieve a depth of at least s/16
inch (8 mm) within 7/8 inch (22 mm) below the
widest portion of the profile. This required depth
shall continue for at least 3/8 inch (10 mm) to a level
that is not less than 13/4 inches (45 mm) below the
tallest portion of the profile. The minimum width
of the handrail above the recess shall be 11/4 inches
(32 mm) to a maximum of 23/4 inches (70 mm).
Edges shall have a minimum radius of 0.01 inch
(0.25 mm).
R311.7.7.4 Exterior wood/plastic composite hand-
rails. Wood/plastic composite handrails shall comply
with the provisions of Section R317.4.
BUILDING PLANNING
R311.7.8 Illumination. All stairs shall be provided with
illumination in accordance with Section R3O3.6.
R311.7.9 Special stairways. Spiral stairways and bulkhead
enclosure stairways shall comply with all requirements of
Section R311.7 except as specified below.
R311.7.9.1 Spiral stairways. Spiral stairways are per-
mitted, provided the minimum clear width at and below
the handrail shall be 26 inches (660 mm) with each tread
having a 71/2 -inch (190 mm) minimum tread depth at 12
inches (914 mm) from the narrower edge. All treads shall
be identical, and the rise shall be no more than 91/z inches
(241 mm). A minimum headroom of 6 feet 6 inches
(1982 mm) shall be provided.
8311.7.9.2 Bulkhead enclosure stairways. Stairways
serving bulkhead enclosures, not part of the required
building egress, providing access from the outside grade
level to the basement shall be exempt from the require-
ments of Sections R311.3 and R311.7 where the maxi-
mum height from the basement finished floor level to
grade adjacent to the stairway does not exceed 8 feet
(2438 mm) and the grade level opening to the stairway is
covered by a bulkhead enclosure with hinged doors or
other approved means.
8311.8 Ramps.
8311.8.1 Maximum slope. Ramps shall have a maximum
slope of 1 unit vertical in 12 units horizontal (8.3 percent
slope).
Exception: Where it is technically infeasible to comply
because of site constraints, ramps may have a maximum
slope of one unit vertical in eight horizontal (12.5 percent
slope).
R311.8.2 Landings required. A minimum 3 -foot -by -3 -foot
(914 mm by 914 mm) landing shall be provided:
1. At the top and bottom of ramps.
2. Where doors open onto ramps.
3. Where ramps change direction.
' Rf11.8.3 Handrails required. Handrails shall be provided
on at least one side of all ramps exceeding a slope of one unit
vertical in 12 units horizontal (8.33 -percent slope).
R311.8.3.1 Height. Handrail height, measured above the
finished surface of the ramp slope, shall be not less than 34
inches (864 mm) and not more than 38 inches (965 mm).
R311.8.3.2 Grip size. Handrails on ramps shall comply
with Section R311.7.7.3.
R311.8.3.3 Continuity. Handrails where required on
ramps shall be continuous for the full length of the ramp.
Handrail ends shall be returned or shall terminate in
newel posts or safety terminals. Handrails adjacent to a
wall shall have a space of not less than 11/2 inches (38
mm) between the wall and the handrails.
2009 INTERNATIONAL RESIDENTIAL CODE® 61