13-1219R-005O !
1) WIND LOADS:
PRESSURES (C&C) ON
F.B.C. 2010
ON 10 SQUARE FEET
ASCE 7 -10
NAILING
ULTIMATE WIND SPEED
= 175 MPH
EXPOSURE = C
= -618 PSF
RISK CATEGORY = II
= -94.4 PSF
MEAN ROOF HEIGHT =
15 FT
BASE WIND PRESSURE
= 33.9 PSF
Kz = Kh = 0.85 Kd
= 0.85
+EImmt# m
ULTIMATE UPLIFT ROOF
PRESSURES (C&C) ON
ROOF COVERING BASED
ON 10 SQUARE FEET
EFFECTIVE AREA.
NAILING
ZONE: in
= -36.7 PSF
ZONE: 2
= -618 PSF
ZONE: 3
= -94.4 PSF
2) GRAVITY LOADS:
NAIL SIZE
A)
I=
B) LIVE LOAD:
30 PSF
DEAD LOAD:
V
• TRUSS TOP CHORD
15 PSF
• TRUSS BOTTOM CHORD 10 PSF
TOTAL LOAD
55 PSF
0
C.L.B. - 2 "x4" BOTTOM CONTINUOS LATERAL BRACING
D.B. - 2 "x4" BOTTOM DIAGONAL BRACING.
G•T- - GIRDER TRUSS
UM(3x- - MAX. NOMINAL NET DESIGN UPLIFT FORCE IN WOOD CONNECTOR.
Vz - DESIGN SHEAR FORCE PERPENDICULAR TO THE WALL IN WOOD CONNECTOR
- TERMINATE COLUMN /TIE COUMN TYPE
f ! Igol a g ml •
ALL WOOD IN DIRECT CONTACT • OR MASONRY
--.'E NATURALLY DURABLE SPECIES, OR PRESSURE TREATED WOOD PEr�
AMERICAN ••f PRESERVES ASSOCIATION -
WOOD TRUSSES @ CON11NUOUS
O.0 LATERAL BRACING
L20' -0" MAX.
PERMANENT BRACING IN THE PLANE OF THE WEBS,
CONTINUOS LATERAL BRACING
PLYWOOD ROOF SHEAR DIAPHRAGM SCHEDULE
<
FRAMING
MINIMUM
NAILING
COMMON
Ir
PANEL GRADE
TRUSS
PANEL
SCHEDULE
NAIL SIZE
REMARKS
I=
a
SPACING
THICKNESS
V
�
O
ROOF
APA RATED SHEATHING
2 " -O"
1932"
6" ® ZONE: 1
8d RING
GABLE ENDS
EXPA
L
NOM.
SHANK
(SEE NOTE: 5)
�
4" @ ZONE: 2 & 3
NAILS
FRAMING
NOTES: IF
1. INSTALL PLYWOOD PANELS AS SHOWN ON DETAIL ABOVE. DIAPHRAGM BOUNDARIES
2. OSB SHEATHING IS NOT ALLOWED IN THE HIGH VELOCITY HURRICANE ZONES "HVHZ ".
3. PLYWOOD ROOF SHEATHING CD GRADE, AND SHALL BE RATED FOR EXPOSURE 1, WITH A MINIMUM NOMINAL THICKNESS OF 1%2" AND
SHALL BE CONTINUOUS OVER (2) OR MORE SPANS WITH THE LONG DIMENSION OR STRENGTH AXIS OF THE PANEL PERPENDICULAR TO
SUPPORTS.
4. PANEL END JOINTS SHALL OCCUR OVER TRUSSES. JOINTS SHALL BE STAGGERED AND PARALLEL TO THE TRUSSES, AND ENDS AT
DIAPHRAGM BOUNDARIES SHALL BE ATTACHED TO A MINIMUM 2- INCH -THICK NOMINAL FASCIA BOARD.
5. ROOF SHEATHING PANELS SHALL BE PROVIDED WITH THE MINIMUM OF 2x4 EDGEWISE BLOCKING AT ALL HORIZONTAL PANEL JOINTS FOR A
DISTANCE AT LEAST 4 FEET FROM EACH GABLE END. UNLESS OTHERWISE NOTED.
6. ZONES 1, 2 & 3 ARE AS SHOWN ON UPLIFT DIAGRAM ABOVE.
WOOD TRUSSES BRACING NOTES:
A. PERMANENT WEB BRACING SHALL BE INSTALLED ACCORDING TO INDIVIDUAL TRUSS DRAWING. REFER TO SHOP DRAWINGS. (WEB
BRACING IS NOT SHOWN ON ROOF FRAMING PLAN). HOWEVER, THE PERMANENT WEB AND HORIZONTAL LATERAL BRACING SHALL
MEETS AT LEAST THE MINIMUM REQUIREMENTS SPECIFIED IN THIS SHEET. THE PERMANENT WEB AND HORIZONTAL LATERAL
BRACING SHALL BE RESTRAINED TO PREVENT LATERAL MOVEMENT BY SOLID ANCHORAGE TO END WALLS, OR BY PERMANENT
DIAGONAL BRACING IN THE PLANE OF THE WEB MEMBER AT INTERVALS NOT TO EXCEED TWENTY (20) FEET ALONG CONTINUOUS
WEB BRACE. (REFER TO HIB -91, SECTION 1323.1 AND DETAILS BELOW ON THIS SHEET. IN THE EVEN OF CONFLICT BETWEEN SHOP
DRAWINGS AND THE ENGINEER OF RECORD PERMANENT LATERAL BRACING REQUIREMENTS, THE PROVISIONS OF THE MORE STRINGENT SHALL GOVERN.
B. ALL TOP CHORDS ARE ASSEMBLED TO BE SHEATHED, AND ALL BOTTOM CHORDS SHALL BRACED BY A CONTINUOUS LATERAL
BRACING SPACED NOT MORE THAN 10 FEET. REFER TO INDIVIDUAL TRUSS DRAWINGS FOR ACTUAL BRACING REQUIREMENTS. THE
DRYWALL CEILING IS NOT TO BE CONSIDERED A CEILING DIAPHRAGM.
C. BRACING SHOWN ON PLANS DOES NOT INCLUDE TEMPORARY BRACING REQUIRED FOR THE ERECTION AND INSTALLA11ON OF
TRUSSES PRIOR TO THE INSTALLATION OF PERMANENT CROSS BRACING AND WEB LATERAL BRACING REQUIREMENTS. TEMPORARY
BRACING IS THE RESPONSIBILITY OF THE CONTRACTOR AND SHOULD REMAIN IN PLACE AS LONG AS NECESSARY FOR THE SAFE
AND ACCEPTABLE INSTALLATION OF THE ROOF OR FLOOR. (REF: HIB -91 SUMMARY SHEET).
D. REFER TO 'HIB -91 COMMENTARY AND RECOMMENDATIONS FOR HANDLING, INSTALLATION AND BRACING METAL PLATE CONNECTED
WOOD TRUSSES', APPENDIX C, FOR RECOMMENDED SEQUENCE OF INSTALLING BRACING COMPONENTS.
2 "x4" PERMANENT WEB DIAGONAL CROSS
BRACING WITH 2 -16d COMMON NAILS TO
AT EACH INTERSECTION. MAY
TRANSVERSE MORE THAN TWO TRUSSES
DEPENDING ON TRUSS HEIGHT. (TYP.)
10' -0" MAX. --1 10 " -0" MAX. 10' -0`" MAX.
DIAGONAL BRACING IN THE PLANE OF THE BOTTOM CHORD
2 "x4" CONT. LATERAL BRACING —
NAILED TO EACH TRUSS W/(2) -16d
NAILS. ALL SPLICES TO OCCUR
OVER TWO TRUSS SPANS.
2 "x4" DIAGONAL BRACING NAILED
TO BOTTOM CHORD PREVENTS
LATERAL MOVEMENT AND SHALL BE
REPEATED AT EACH END AND AT
THE SAME INTERVALS NOT MORE
THAN 20 FEET IN DIRECTION OF
HORIZONTAL BRACING.
NOTE:
WHERE A CEILING IS TO BE ATTACHED
DIRECTLY TO THE UNDERSIDE OF TRUSSES,
THE TRUSSES SHALL BE LATERALLY
BRACED W/ CONTINUOS 2X4 MEMBERS
NAILED W/ (2) 16D COMMON NAILS TO THE
UPPER SIDE OF THE BOTTOM CHORD AT
PANEL POINT BUT NOT TO EXCEED 10 FT
APART. THIS LATERAL BRACING SHALL BE
RESTRAINED AT EACH END AND AT 20 FT
INTERVALS. DRAYWALL MAY BE CONSIDERED
A RIGID CEILING IN ENCLOSED AREAS
WHERE IT IS PROTECTED FROM THE
ELEMENTS . THE DRYWALL CEILING IS NOT
TO BE CONSIDERED A CEILING DIAPHRAGM.
PLAII VIETT
.. ENGINEERED & APPROVED
WOOD ROOF TRUSS @ •
OVERLAP DETAIL
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CHECKED
DATE
10-29-13
SCALE
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