5 LENNArr
2103 NE I2eth STREET
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VANCOUVER,WASHINGTON S8686
OFFICE PI-IONE: (3(o0)258-1S00
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L1'Ø S.F.UPPER ATTIC
42S.6 scik REQ.HIGH = (S VENTS)
42Sb Sci.ln REQ.LOW I ri
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VENT,SEE VENTING CALCULATION'
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NIS SWEET TO FIGURE NUMBER OF
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ATTIC VENTILATION PER IRC (R806.2) -„,_
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NOTE:ATTIC VENTILATION IS FIGURED WITH 50%OF THE VENTS HIGH AND 50%LOW.
(PACIFIC LUMBER ROOF TRUSS COMPANY SUPPLIES(LOW VENT)VENT BLOCKS WITH
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A 2x10 SLOT OR 20 INCHES OF VENTING PER BLOCK).
1/4.....
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CALCULATION:
(SQ. FOOTAGE OF PARTICULAR ATTIC AREA(300 x 144=TOTAL REQUIRED VENTING -- -.
AREA IN SQ. INCHES.THEN DIVIDE THAT NUMBER BY 2.THAT WILL GIVE THE
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REQUIRED AREA BETWEEN HIGH AND LOW VENTS.TO BREAK IT DOWN FURTHER TO L.
DETERMINE HOW MANY VENTS ARE REQUIRED ON THE HIGH SIDE OF ROOF,TAKE
7--- ------THE NUMBER NUMBER(AFTER BEING DIVIDED BY 2)AND DIVIDE BY 50(ASSUMING THE ROOF T-7- -------"'''':
VENTS ARE 50 SQ. IN.)THAT IS THE TOTAL NUMBER OF VENTS REQUIRED. I ------ ---------,---:
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12'RAKE AMERICAls
GARAGE RICH-1
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MAIN LEVEL: 1,138 SQ F
UPPER LEVEL: 1,694 SQ F
TOTAL: 2,832 SQ F
ROOF FRAMING PLAN NOTES : GARAGE: z!&4 ea P
FRONT COVERED PORCH: 62 SQ I
• PROVIDE MANUFACTURED ROOF TRUSSES AT 24' 0.C_TRUSS MANUFACTURER TO SUPPLY DESIGNER AND REAR COVERED PORCH!: Ill SQ I
BUILDING DEPARTMENT WITI4 TRUSS LAYOUT INCLUDING REQUIRED I4ANGERS AND ENGINEERED TRUSS
DIAGRAMS PRIOR TO FABRICATION.SUPPORT TRUSSES LATERALLY IN ACCORDANCE WITI-4 TRUSS
MANUFACTURERS REQUIREMENTS. INSTALL A SEISMIC ANCI-IOR AT EACI4 TRUSS PER ENGINEER
INDICATES ROOF BEARING ON WALLS BELOW. sr
U • MI IIII In INDICATES ROOF BEARING ON BEAMS BELOW.
, : •..• INDICATES ROOF STRUCTURE FRAMED OVER ROOF STRUCTURE BELOW WITH CONT.
SHEATHING OVER LOWER STRUCTURE, PROVIDE VALLEY RAFTERS LAID FLAT OVER 2 X -.
!BLOCKING BETWEEN RAFTERS OR TRUSSES BELOW.
o INDICATES 2x3 G.I.DOWN SPOUT TO ROOF BELOW. I. ....
• INDICATES 2x3 GA.DOWN SPOUT TO RAIN DRAIN BELOW.
a INDICATES 1' DIAMETER ROOF MOUNTED ATTIC VENTS. NOTE :
421) INDICATES ROOF SLOPE .11
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FOR ALL STRUCTMAL
IROOF FAM IN FLAN 1/4' = I'-0' INFORMATION REFER
TO THE (S) SHEETS
1IIIIIIISINI 111111MIIIIIIIIIIMINNIIIII
. 11111111111111111111.1111.11P
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