EXTERIOR
LIGHT
D
E
3
3
B
2
24" max
overhang
A
2
DECK JOIST SPAN 6'- 8" MIN
SEE TABLE "A" -
10' - 0" MAX HEADER SPAN
SEE TABLE "B"
C
2
TABLE “A” TABLE “B” TABLE “C” 1
(douglas fir #2 or better) (douglas fir #2 or better) (3/8 dia. X 6" lag bolts – see note 1)
2x6 12” o.c. 10’ – 6” 8'-0" OR LESS 8" O.C.
16” o.c. 9’ – 0” UPTO 8'-0" 4X8 8'-0" 8'-1" TO 10'-0" 6" O.C.
24” o.c. 7’ – 6” 4 X 10 10'-0" 10'-1" TO 12'-0" 5-1/2" O.C.
2x8 12” o.c. 14’ – 0” 4 X 12 11'-6"
12'-1" TO 14'-0" 4-1/2" O.C.
16” o.c. 12’ – 0” 6 X 12 14'-0"
14'-1" TO 15'-0" 4" O.C.
24” o.c. 9’ – 6” 8'-1" - 10'-0" 4X8 7'-6"
NOTES:
2 x 10 16” o.c. 15’ – 0” 4 X 10 9'-6"
24” o.c. 12’ – 0” 4 X 12 11'-0" 1. Ledger Bolts shall be 3/8" dia. x 6" long with
6 X 12 13'-0" 1/ 4" dia. pre drilled holes. Bolts are to be
2 x 12 24” o.c. 14’ – 0” placed staggered.
2. All metal hardware & screws to be galvanized
4x6 12” o.c. 14’ – 6” 10'-1" - 12'-0" 4X8 7'-0" or of otherwise approved corrosion
4 X 10 9'-0" resistance
16” o.c. 13’ – 6” 3. Maximum 5' joist span if 2nd floor is
24” o.c. 11’ – 6” 4 X 12 10'-0" cantilevered at ledger.
4. Shear walls may not be modified unless
4x8 24” o.c. 15’ – 0” 6 X 12 12'-0" structural calculations are submitted and
approved by the Building Department
4 x 10 32” o.c. 15’ – 0” 12'-1" - 15'-0" 4X8 6'-6" 5. Use of this Standard is limited to R-3
4 X 10 8'-0" occupancies (Single Family Dwellings and
Duplex) 1
4 X 12 9'-6"
6 X 12 11'-0"
Alternate deck designs may be
possible when provided with an
engineered analysis. Use of this )
conventional standard design is at
the user’s risk and carries no implied
or inferred guarantee against failure
or defects.
1
A
24" 24" 24"
½” DIA BOLTS
W/ NUTS AND 3"
3"
WASHERS
24"
TYPICAL ALL
BRACED
45° 45° 45°
CONNECTIONS
4x4 BRACE 4x4 BRACE
TYPICAL TYPICAL
3" 3"
4x4
POST
(MIN.)
1- ½”
MAX
1- ½”
MAX
NOTE:
1. End posts require single Knee
brace. All interior posts to have
double braces.
B C
Min 4 x 4 post
6" o.c. boundary Ledger: For Ledger bolt
nailing (or screws) (same depth as size & spacing machine bolts per
joists or deeper) manufacturer’s
from decking to
ledger specifications
COLUMN BASE -
USE SIMPSON
CBSQ, PBS OR
2- 5/8" MIN EQUAL
FLOOR
1" STANDOFF FROM
JOIST CONCRETE TO POST
1" MIN
3 - ½”
Important note:
Simpson SD #9 x 1-½” Screws (or screw
Joist Hanger 18" DEEP
indicated by the hanger manufacturer)
(sized to joist)
MUST be used at all joist hangers
(NO NAILS)
This deck connection detail is
based on the assumption that a minimum
1-1/2" thick wood member is adequately
installed at all edges of the floor )
diaphragm. If any other material is used,
such as TJI joists, a special engineered
design will be required. It is the
owner's responsibility to verify the
presence of the appropriate rim joist.
1 2
OPTION #1 OPTION #2
(2) #8 x 3" deck
36" Maximum 36" Maximum
screws @ ea. 4x4
(1) #8 x 3" deck
screw @ ea. 2x2
(2) #8 x 3" deck
screws @ ea. 2x2
(2) ½” Dia. (2) ½” Dia. Machine
bolts w/ nuts &
Machine bolts @ washers @ each 4x4
each post
see detail
24" max Post cap with machine bolts per
overhang manufacturer’s specifications
(2) 2x6 w/ (2) #8 x 3" deck
screws to 4x4 posts
4x4 posts @36" o.c.
2x2 verticals @ < 4" o.c.
1 1 42" min
42" min
2x6
Double end joists or use 4x member
Boundary nailing @ 6" o.c. Simpson “H3” or equal @ top and bottom
(see NOTES below for nail sizes)
2x blocking @ 32" o.c. w/
boundary nailing to block
@6" o.c.
Simpson “A35” or (2) ½” Dia. Machine bolts w/
equal at ea. block nuts & washers @ each post
Floor joists
Simpson “H3” or
equal @ 48" o.c. Simpson “A35” or equal at ea. side
Floor joists
24" max
overhang
:
1. 5/8" tongue and groove jointed plywood )
secured with 8d nails. All edge nailing at 6"
o.c. Must be covered with an approved
weather resistive material walking surface,
and sloped for drainage.
2. 2x6" decking secured w/ (2) 16d nails (or
approved deck screws 2 ) @ ea. joist. 1 2
1. the tolerance between the largest and smallest
tread depth or between the largest and smallest 1 2"x2" at 5 " o.c. max (or such that a 4"
sphere shall not pass thru the openings)
riser height shall not exceed 3/8" in the stairway. 1
2. stairway width 36" min – 48" max. 4x4 @ 48 “ o.c. max
3. treads must have approved slip resistant surface 6'-8" min
headroom
4. alternate stairway designs may be acceptable
pending building department approval.
Handrail/Guardrail
5. Lighting level at all stair treads to be a minimum of 1 to continue to deck
foot-candle. 1
#8 x 3"
long deck
screws
Handrail to be adequately
supported and returned to
guardrail ( see handrail Handrail/
details below). Guardrail to
continue to
grade 7"
4x4 POST
Handrail/Guardrail
34" - 38" from top
2x2 rail of tread 1
Height of 4X12 STRINGER @
handrail to EA. END OF TREADS
4X12 TREADS
be 34" to 38"
above treads (2) ¼” x 5" lag
4X12 STRINGER
bolts @ ea 2x2
(2) ½” dia. machine bolts w/
nuts & washers @ ea 4x4 post
4" min 1
7-3/4" max
2X8 SOLID RISERS 1
(closed risers required when tread
is more than 30" above grade)
Simpson
“A35” or 4X12 TREADS (minimum tread depth = 11") 1
equal 1 Approved Angle Bracket w/ lag bolts per manufacturer specs
1/2” air gap between concrete and wood.
2x4 treated wood plate
1/2" dia anchor bolt 1
(2) #4 rebar
: 18" wide X 12" Deep X stair width.
HANDRAIL DETAILS
1-1/4" min. 1-1/4" min.
1-1/2" min. 1-1/2" min.
2" max. 2" max.
Other shapes may be
acceptable if they provide
an equivalent gripping
surface.
