1. TWO 2X MEMBERS MAY BE SUBSTITUTED FOR ONE 4X HORIZONTAL FRAMING
MEMBER.
Alternate patio 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.
2. LAG BOLTS MUST FULLY ENGAGE A WOOD STUD OR RIM JOIST AND BE PROVIDED
WITH APPROPRIATE WASHERS. LAG BOLTS SHALL BE LOCATED A MINIMUM OF 1-½”
FROM THE TOP OR BOTTOM OF THE LEDGER.
4. SEE PAGE 2 OF 2 FOR CONSTRUCTION DETAILS.
RAFTER SPACING:
SEE TABLE “A”
TABLE "B"
HEADER SIZE & SPANS
(DOUGLAS FIR #2 OR BETTER)
TABLE "A"
RAFTER SPANS
(DOUGLAS FIR #2 OR BETTER)
TABLE "C"
FOOTING SIZE
TABLE "D"
LEDGER
BOLTING
18" SQ. X 12" DEEP
18" SQ. X 12" DEEP
18" SQ. X 12" DEEP
18" SQ. X 12" DEEP
12" O.C. 9' -10"
16" O.C. 8' - 11"
24" O.C. 7' - 8"
32" O.C.
*6' - 3"
1/2" DIA. X 5"
LONG AT 16"
O.C. STAGGERED
(2) 3/8" DIA X 5"
LONG AT 16"
O.C.
8'-0" MAX 4 x 6
10'-0" MAX 4 x 8
12'-0" MAX 4 x 10
14'-0" MAX 4 x 12
8'-0" MAX 4 x 8
10'-0" MAX 4 x 10
12'-0" MAX 4 x 12
14'-0" MAX 4 x 14
24" SQ. X 12" DEEP
24" SQ. X 12" DEEP
24" SQ. X 12" DEEP
24" SQ. X 12" DEEP
12" O.C. 15' - 4"
16" O.C. 13' - 9"
24" O.C. 11' - 3"
32" O.C.
*9' - 7"
12" O.C. 20' - 0"
16" O.C. 18' - 2"
24" O.C. 14' - 10"
32" O.C.
*12' - 8"
12" O.C. 20' - 0"
16" O.C. 20' - 0"
24" O.C. 18' - 11"
32" O.C. *16' - 2"
24" O.C. 10' - 0"
32" O.C.
*9' - 3"
48" O.C.
*7' - 8"
24" O.C. 15' - 11"
32" O.C.
*13' - 9"
48" O.C.
*11' - 3"
24" O.C. 20' - 0"
32" O.C.
*18' - 2"
48" O.C.
*14' - 10"
2X2 OR 2X4 @3" O.C. MIN. SPACING
LATTICE OR
½” nominal PLYWOOD
WITH BUILT-UP OR ROLL ROOFING
SIMPSON (OR EQUAL)
POST CAPS OR
"T" STRAP EACH SIDE
½” DIA. THRU BOLTS
OR 16d NAILS
2X SOLID BLOCKING REQUIRED FOR
ALL SOLID PATIO COVERS W/ MIN (3)
16d TOENAILS TO HEADER, OR A-34
OR EQUAL FRAMING ANGLES
24"
MAX.
OVERHANG
KNEE BRACE:
SEE FRAMING
DETAILS (PG. 2)
HEADER SPAN & SIZE:
SEE TABLE “B”
CLEARANCE:
6' - 8" MIN.
8' - 0" MAX.
RAFTER SPAN & SIZE SEE TABLE "A"
EXISTING WOOD
STUD WALL
ROOF SLOPE: ¼" PER FOOT MIN.
3 ½" CONCRETE
SLAB TYPICAL
24"
MAX.
OVERHANG
SLOPE
SIMPSON H2 (OR EQUAL)
HURRICANE CLIPS @ 48" O.C.
EDGE NAIL PLYWOOD W/ 8d
NAILS @ 6" O.C. (Standard 6" /
12" nailing elsewhere)
Typical
4x4 Posts
min
4X4 POST
1" STANDOFF BETWEEN
CONCRETE AND WOOD
POST
COLUMN BASE -USE
SIMPSON CBSQ, PBS
OR EQUAL W/BOLTS/
SCREWS/NAILS PER
MFG. SPECS.
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5. ARTIFICIAL LIGHTING IS REQUIRED IN ROOMS THAT HAVE WINDOW OPENINGS INTO
THE COVERED PATIO AREA IF THE TOTAL WINDOW AREA IN THAT ROOM IS LESS
THAN 10% OR THE FLOOR AREA OF THE ROOM OR 20 SQUARE FEET, WHICHEVER
IS GREATER.
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3. NOT DESIGNED TO BE ENCLOSED OR FREESTANDING - ADDITIONAL ENGINEERING
ANALYSIS WILL BE REQUIRED.
City of San Dimas
Building & Safety
(909) 394-6260
SD Patio Standard
(Header Span)
(Rafter Span)
DESIGNATED FIRE ZONE
YES
NO
PROPERTY IS WITHIN A
245 E Bonita Avenue
San Dimas, CA 91773
TWO ½" DIA. THRU-BOLTS
(W/ WASHERS), PER
CONNECTION AS SHOWN
FOR HEADERS OR RAFTERS-
TWO 2X MEMBERS MAY BE
SUBSTITUTED FOR ONE 4X
MEMBER. SEE TABLES “A” &
“B” FOR SPAN LIMITS
1. USE A CONTINUOUS 2X LEDGER – SAME DEPTH
AS RAFTER OR LARGER
2. SEE TABLE “D” FOR BOLTING REQUIREMENTS
KNEE BRACING REQUIRED
WHEN RAFTER SPAN
EXCEEDS 12 FEET
RAFTER
APPROVED JOIST
HANGER
EXISTING
STUDS
EXISTING
ROOF
LAG BOLTS
(see table d)
4x4
POST
(MIN.)
24"
3"
4x4 BRACE
45°
24"
24"
(2) 2X4 BRACES
24"
A A
4x4 POST
HEADER
½” DIA BOLTS W/NUTS &
WASHERS TYPICAL ALL
BRACED CONNECTIONS
EDGE NAIL
PLYWOOD AT 6"
O.C. AT LEDGER
SIMPSON A-35 OR
EQUAL ANCHOR
2X6 OR LARGER RAFTERS
PATIO RAFTERS
SEE TABLE “A”
30" MAX
OVERHANG
PATIO RAFTERS
SEE TABLE “A”
2X4 RAFTERS OR PRE-FAB. ROOF TRUSSES
2X4 LEDGER W/ 20d NAILS OR ¼" DIA. X 4"
LONG LAG BOLTS @32" O.C.
2X4 STRUT W/(3) 8d TOENAILS
FROM STRUT TO LEDGER
(2) 16d NAILS
30" MAX
OVERHANG
3"
2x LEDGER
SECTION A-A
APPROVED JOIST HANGER
A-35 OR EQUAL ANCHOR
1- ½”
2X FASCIA
2X2 OR 2X4
2X FASCIA
APPROVED
JOIST HANGER
)
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City of San Dimas
Building and Safety
SDPatioStandard
Verify structural soundness of roof rafters for decay or termite damage,and replace
with like materials as needed, After consultation with the building department.
NOTE:
THE SIZE OF THE PATIO RAFTERS SHALL BE THE ROOF RAFTERS.
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NOT APPROVED CONNECTION
building@sandimasca.gov
245 E Bonita Avenue
San Dimas, CA 91773
(909) 394-6260