09-811-016EXISTING 24'-0"
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REMOVE EXISTING ROOF
SHINGLES W /IN TRUSS
1 I I LIMITS (FIELD COORD.)
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= FIELD VERIFY & MATCH 7, -6„
o EXISTING OVERHANG, PRIOR
N TO TRUSS FABRICATION
in excess of 19/32 Inches shall be fastened to the supporting
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three in each eighth -inch board at each support.
more than six inches on center over all supports, including
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the blocking. Nail spacing over gable ends shall not exceed
Wood based structural use panel roof sheathing shall be rated
four inches on center.
for Exposure 1, have a minimum nominal thickness of 19/32
Inches and shall be continuous over two or more spans with
Nails shall be hand driven 10d common nails (0.148" diameter
face grain perpendicular to supports. Panel roof sheathing
by 3" long with a 0.312" diameter full round head) or power
shall be provided with a minimum of 2" x 4" edgewise blocking
driven 8d nails of the same dimensions (0.148" diameter by 3"
at all horizontal panel joints with edge and end spacing in
long with a 0.312" diameter full round head).
accordance with manufacturer's specifications, for a distance
Diaphragm Boundaries
shall be clearly identified on the design drawings.
All roof sheathing acting as a diaphragm shall be attached to
Fastening of up to and including 19/32 inches roof sheathing
a minimum 2 inch thick nominal member with its depth equal to
panels shall be fastened to the su pp ortin g structural member
or one size greater than the intersecting top chord. This
with less than 8d common nails spacing six inches on center
shall be achieved with a continuous structural sub- fascia or
over all supports, including the blocking. Nail spacing over
blocking between framing members where a soffit is provided
gable ends shall not exceed four inches on center.
-
at 4 inches on center with nails as required for the
Nails shall be hand driven 8d common nails (0.131" diameter
appropriate thickness of sheathing.
by 2 -1/2" long with a 0.281" diameter full round head) or
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power driven 8d nails of the same dimensions (0.131" diameter
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by 2 -1/2" long with a 0.281' diameter full round head).
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STRAP "A "„ SEE
REMOVAL„ FIELD VERIFY LIMITS PRIOR NU1t5 �tLUw
TO DEMOLITION
SCALE: 1/4"=-0"
' -0"
ROOF FRAMING PLAN
PROVIDE 1/8 " ' �
SPACING AT V1
PANEL EDGES PREFABRICATED WOOD TRUSSES
24' ON CENTER SEE ROOF PLAN
4' x 8' CDX PLYWOOD
SHEATHING MIN. 19/32" THICK -
MAX. SPAN 24'
x!+11
PROVIDE 2 "x4" BLOCKING 0
ALL PLYWOOD SEAMS, 48' BACK
OF CABLE END. NAIL SEAM w/ 10d
0 4 "o.c. EA. SIDE OF SEAM.
11-V ... .
' LATERAL BRACING SEE DETAIL
2'x8" WOOD FASCIA SEE ON THIS SHEET.
TYPICAL WALL SECTION NAILED
W/ 2 -16d NNLS 0 EACH TRUSS
8d NAILS AT 6 "o,c. AT PANEL EDGE
AND INTERMEDIATE SUPPORT
1/16" SPACE AT PANEL ENDS 4'o.c. 9 GABLE ENDS
FIRST 48" BACK
ROOF SHEATHING DETAIL
N.T.S.
Roof Sheathing Notes
Board roof sheathing shall have a net thickness of not less
AUG., 2009
than three - fourths inch when the span is not more than 28
1/4"=V-0"
inches or 5/8 inch when the span is not more than 24 inches,
Fastening of roof sheathing panels with a nominal thickness
shall have staggered joints and shall be nailed with 8d
in excess of 19/32 Inches shall be fastened to the supporting
common nails not less than two in each six -inch board nor
structural member with less than 10d common nails spaced no
three in each eighth -inch board at each support.
more than six inches on center over all supports, including
`V
the blocking. Nail spacing over gable ends shall not exceed
Wood based structural use panel roof sheathing shall be rated
four inches on center.
for Exposure 1, have a minimum nominal thickness of 19/32
Inches and shall be continuous over two or more spans with
Nails shall be hand driven 10d common nails (0.148" diameter
face grain perpendicular to supports. Panel roof sheathing
by 3" long with a 0.312" diameter full round head) or power
shall be provided with a minimum of 2" x 4" edgewise blocking
driven 8d nails of the same dimensions (0.148" diameter by 3"
at all horizontal panel joints with edge and end spacing in
long with a 0.312" diameter full round head).
accordance with manufacturer's specifications, for a distance
at least four feet from each gable end. The allowable spans
Diaphragm Boundaries
shall be clearly identified on the design drawings.
All roof sheathing acting as a diaphragm shall be attached to
Fastening of up to and including 19/32 inches roof sheathing
a minimum 2 inch thick nominal member with its depth equal to
panels shall be fastened to the su pp ortin g structural member
or one size greater than the intersecting top chord. This
with less than 8d common nails spacing six inches on center
shall be achieved with a continuous structural sub- fascia or
over all supports, including the blocking. Nail spacing over
blocking between framing members where a soffit is provided
gable ends shall not exceed four inches on center.
and shall be effectively nailed to said structural sub - fascia
at 4 inches on center with nails as required for the
Nails shall be hand driven 8d common nails (0.131" diameter
appropriate thickness of sheathing.
by 2 -1/2" long with a 0.281" diameter full round head) or
0)
power driven 8d nails of the same dimensions (0.131" diameter
by 2 -1/2" long with a 0.281' diameter full round head).
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CONT. LATERAL
BRACING AS REGO
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SHEATHING DIAG BRACING
45•
COMPRESSION WEB
SLOPING DR VERT
DIAG BRACING
CONT LATERAL BRACE NAILED TO OPPOSITE SIDE
IF WEB TO PREVENT LATERAL
CEILING MOVEMENT - AT 20' D.C.
DIAGONALS
FORM BRACED
BAY AT 20 FT CONT LATERAL
INTERVALS BRACING LOCATED
REPEAT AT ON OR NEAR
BOTH ENDS PANEL POINT
(s' TO 10' D.C.)
BOTTOM CHORD
45' OF TRUSSES
(TYP)
WOOD TRUSSES SHALL BE BRACED AND ERECTED IN ACCORDANCE
WITH THE 'TRUSS PLATE INSTITUTE' BRACING WDDD TRUSSESI
COMMENTARY AND RECOMMENDATIONS, BWT -76, BRACING IN THE
PLAN OF THE WEB MEMBERS I
n, THE TRUSS FABRICATOR SHALL PROVIDE AND LOCATE
CONTINUOUS LATERAL BRACING FOR EACH TRUSS WEB
MEMBER AS REQUIRED.
IC. LATERAL BRACING SHALL BE RESTRAINED BY DIAGONAL
BRACING (MIN, 2' THICK NOMINAL LUMBER). THIS
BRACING IS TO BE CONTINUOUS,
c. A MINIMUM OF TWO ROWS OF DIAGONAL BRACING IS
REQUIRED, ONE AT EACH VERTICAL WEB MEMBER
CLOSEST TO BEARING LOCATIONS.
THE BOTTOM CHORDS SHALL BE BRACED BY CONTINUOUS
LATERAL BRACING SPACED AT B TO 10 FEET, NAILED TO
TOP OF THE BOTOM CHORD. DIAGONALS PLACES AT 45•
TO THE LATERAL BRACES SHALL BE LOCATED AT EACH END.
IF BUILDING EXCEEDS 60 FEET IN LENGTH, DIAGONAL BRACING
SHOULD BE REPEATED AT 20 FOOT INTERVALS.
TOP CHORD BRACING I
a. IF PLYWOOD DECKING IS APPLIED DIRECTLY TO TOP
CHORD, PROPERLY LAPPED AND NAILED TO DEVELOP
DIAPRAGHM ACTION, BRACING IS NOT REQUIRED,
b. IF PURLINS ARE USED, DIAGONAL TOP CHORD BRACING
IS REQUIRED AT EACH END, IF BUILDING EXCEEDS 60 FEET
IN LENGTH, DIAGONAL BRACING SHOULD BE REPEATED AT
20 FOOT INTERVALS.
WOOD TRUSS BRACING DETAIL
SCALE NT.S.
TRUSS DESIGN STANDARDS : (AS PER TRUSS MANUF.)
ASCE 7 -05 MUST BE UTILIZED FOR WIND LOADS,
DESIGN WIND VELOCITY= 146 MPH., 1 =1.0, EXP. =C
DESIGN LOADS /TRUSSES , LIVE /DEAD LOADS = 55
2" X 4" S.P. #2 VERTICAL STRUT
FASTENED TO TRUSS TOP AND 19/32" THICK PLYWOOD
BOTTOM CHORD WITH THREE- 16D-7 r ROOF SHEATHING
NAILS, CLINCHED +
FASTEN CROSS- BRACING
TO WOOD STRUT WITH
THREE - 16D NAILS
2" X 4" S.P. 12 _
CROSS- BRACING
FASTEN CROSS- BRACING
TO TRUSS WEB MEMBER
WITH THREE - 16D NAILS
2" X 4" S.P. #2
CROSS- BRACING
FASTEN CROSS- BRACING
TO WOOD STRUT WiTH
THREE - 16D NAILS
1 "X4"S.P.#2
LATERAL BRACING
WOOD TRUSSES
AT 24" O.C.
CROSS BRACING DETAIL
N.T.S.
(2) 16d DUPLEX NAILS EACH MEMBER
2 x 4 CONT. LATERAL WOOD BRACING
NAILED TO BOTTOM CHORD MAXIMUM
8' SPACING AND AS REQUIRED BY TRUSS
MANUFACTURER
®'I SPLICES PRE- FABIWOOD ENGINEERED
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WOOD TRUSSES 24' ON CENTER
LATERAL BRACING DETAIL
N.T.S.
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GENERAL NOTES &SPECIFICATIONS
GENERAL ROOFING NOTES:
* 5/8" CDX PLYWOOD USED FOR ROOF DECKING (APA RATED, 40/20 — 19/32" SIZED FOR SPACING)
FOLLOWED W/ TAR PAPER & DECORATIVE ASPHALT SHINGLES
* PRE — FABRICATED ROOF TRUSSES SET @ 24" O.C. (SUPPLY MANUF. DRAWINGS)
* DECORATIVE ASPHALT SHINGLES — STYLE & COLOR PER OWNER'S SPEC'S., VERIFY PRIOR TO INSTALLATION
* PROVIDE OVERHANGS AS PLAN INDICATED, AROUND PERIMETER, VENT W/ 4" CONT. VENT
STUCCO SOFFIT AREAS, FINISH TO MATCH EXT. FINISH OF RESIDENCE
* OWNER / CONTRACTOR SHALL SUBMIT 3 COPIES OF ALL DETAILED SHOP DRAWINGS
FOR TRUSS FRAMING & ROOF CONSTRUCTION BEFORE PROCEEDING W/ INSTALLATION
* CONTRACTOR TO FIELD VERIFY ALL BLDG. DIMENSIONS, MASONRY OPENINGS & ELEVATIONS,
PRIOR TO CONSTRUCTION OR FORM —WORK, ANY CONFLICTS SHALL BE BROUGHT TO THE
ATTENTION OF THE ENGINEER.
* ALL EXIST. CONDITIONS HAVE BEEN PREPARED FROM THE MOST RELIABLE INFORMATION
AVAILABLE TO THE ENGINEER, CONTRACTOR SHALL VERIFY ALL EXIST. CONDITIONS PRIOR
TO CONSTRUCTION.
ROOF DECKING & FINISH:
i
5/8" CDX PLYWOOD TO BE USED AS ROOF DECKING, FOLLOWED W/ TAR
PAPER & DECORATIVE ASPHALT SHINGLES, BASE ANCHOR SHT. TO BE #30 FELT
LAPPED 2" & TURNED UP, VERT. SECTIONS A MIN. OF 4 ".
DECKING NAILED 4" O.C. ALONG EDGES & 4" O.C. ON INTERMEDIATE LINES
W/ 8d. RING —SHANK NAILS.
BASE COURSE SHALL BE NAILED W/ NON— CORROSIVE SMOOTH SHANK NAILS
SHANK DIA. OF 0.118" OR LESS. NAILS SHALL BE APPLIED THRU TIN —CAPS,
2" DIA. & 32GA. SHT. MTL., NAILS SHALL BE SPACED ® 6" O.C. IN DIRECTIONS
OF ROLL & 12" O.C. ACROSS WIDTH OF ROLL.
MAIN BLDG. ROOF AREA : (STRAP "A ")
MAIN ROOF = 1954.80
OVERHANG = 150.60
REQ'D. OVERALL= 2405.40#
HURR. STRAP WRAP OVER TOP OF ECH. TRUSS & CAST
INTO CONC. TIE —BEAM, USE (1) SIMPSON STRONG —TIE
DETAL20 STRAP, EMBEDDED TRUSS ANCHOR W/ TRUSS SEAT,
NAILED W/18 -10d. NAILS PER TRUSS (OR APPROVED EQUAL)
ALLOWABLE = 2480#
TRUSS SPECIFICATIONS & BRACING:
1. WHERE THE CLG. IS ATTACHED TO THE UNDERSIDE OF THE
TRUSS BTM. CHORD, THE TRUSSES SHALL BE LATERALLY
BRACED W/ 2 "x4" P.T. WD. MEMBERS NAILED TO THE UPPER
SIDE OF THE TRUSS BTM. CHORD, SPACE AT 6' -0" O.C. &
NAILED W/ (2) 16d. COMMON NAILS AT ECH. INTERSECTION.
THIS BRACING SHALL BE NAILED AT ECH. END & AT 20' O.C.
2. ERECTION OF TRUSSES LONGER THAN 35' (OVERALL LENGTH),
OR TALLER THAN 6' (OVERALL HGT.) SHALL BE SUPERVISED
BY A BLDG. CONTRACTOR. A LETTER FROM THE SPECIAL INSP.
SHALL BE SUPPLIED TO THE CITY BLDG. DEPT.
3. ROOF TRUSSES SHALL BE DESIGNED BY A CERTIFIED TRUSS
MANUF., PLANS FOR TRUSSES AND /OR SHOP DWGS. SHALL BE
SUBMITTED TO THE CITY & ENGINEER FOR REVIEW AND APPROVAL.
PLANS ONCE APPROVED SHALL TAKE PRECEDENCE OVER ROOF
FRAMING PLAN INCLUDED. TRUSS DWGS. SHALL INCLUDE ALL
PERTANENT INFORMATION RELATING TO TRUSS FABRICATION,
BRACING, ANCHORAGE, ETC...
EXIST. ROOF AREA (WD. TO WD.) : (STRAP "B ")
HURR. STRAP NAILED TO UPPER TRUSS, THRU EXIST.
WD. DECKING ATTACHED TO EXISTING TRUSS BELOW„
USE (1) SIMPSON STRONG TIE HTS -16 STRAP AT ECH.
EXISTING TRUSS CROSSING BELOW„ NAILED W/16 -10d.
NAILS PER STRAP (OR APPROVED EQUAL)
ALLOWABLE = 1260#
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DING DEPT.
STRUCTURAL SECTiON
aPPROVED BY:,______��F
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REVISIONS BY
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AUG., 2009
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BY
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