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10 7'-6" <br />o <br />JERKINHEALp <br />NOR 7iH <br />1/4" = 1'-0" <br />1� <br />ROOF NOTES <br />1. ROOF MATERIAL SHALL BE ASPHALT SHINGLES (MATCH EXISTING) OVER ONE <br />LAYER 30 # ASPHALT FELT PAPER AND SOLID ROOF SHEATHING. (REFERENCE <br />STRUCT. FOR SHEATHING INFORMATION) THE ROOF SHALL CONFORM TO THE <br />REQUIREMENTS OF A CLASS "C" OR BETTER ROOFING ASSEMBLY. <br />2. ROOF PITCH SHALL BE 4:12, OR UNLESS NOTED OTHERWISE ON ROOF PLAN. <br />3. ROOF OVERHANGS SHALL BE AS DIMENSIONED ON ROOF PLAN. <br />4. ALL VENT PIPES AND CAPS SHALL BE PAINTED TO MATCH COLOR OF ROOF <br />MATERIAL AND SHALL BE HIDDEN BEHIND RIDGES WHERE POSSIBLE. <br />5. PROVIDE ATTIC VENTILATION @ 1 SQ. FT. PER 150 SQ, FT. OF ATTIC AREA BY <br />MEANS OF RIDGE VENT, PREFABRICATED GABLE VENTS (AS INDICATED ON <br />EXTERIOR ELEVATIONS), AND 3 x 2.5" DIAM. HOLES IN BLOCKING W/ 1/4" X 1/4" <br />GALVANIZED MESH SCREEN/CONTINUOUS SOFFIT VENTS PER ROOF <br />VENTILATION CALCS. PROVIDE BAFFLE IF NEC. FOR AIRFLOW FOR GABLE <br />VENTS. <br />� x <br />�r <br />_ y����JERKINHEAD <br />VENT CALCS <br />VENTING REQUIRED: 1/150 <br />1. NEW ROOF A <br />NO VENTING REQUIRED (PORCH ROOF) <br />2. NEW ROOF B <br />ATTIC AREA = 900 S.F. <br />REQ'D VENTING = 900 S.F. / 150 = 6 S.F. <br />A. RIDGE VENT (COR-A-VENT V600 OR EQ.) <br />21'-6" @ 0.14 S.F. N.F.A. PER LINEAL FT. = 3.01 S.F. <br />PROVIDED <br />B. SOFFIT/EAVE (3 x 2.5" DIAM. HOLES IN <br />BLOCKING W/ 2" CONTINUOUS SOFFIT VENT) <br />3 x 2.5" DIAM. HOLES IN BLOCKING: 28 BLOCKS @ <br />0A 0 S.F. N.F.A. EA. = 2.8 S.F. <br />SOFFIT VENT: 58'-0" @ 0.06 S.F. N.F.A. PER LINEAL <br />FT. = 3.48 S.F. <br />2.8 < 3.48 = 2.8 S.F. PROVIDED <br />C. GABLE VENT (12x12" OR EQ.) <br />2 @ 0.44 S.F. N.F.A. EA. = 0.88 S.F. PROVIDED <br />TOTAL VENTING PROVIDED: <br />6.69 S.F. > 6 S.F., OKAY <br />3. NEW ROOF C <br />NO VENTING REQUIRED (OVERFRAMING) <br />I. <br />cr <br />W <br />m <br />2 <br />U 0 <br />W <br />❑m <br />o= <br />❑O <br />z w <br />w C- <br />QU) <br />Q H <br />U Z <br />w <br />ujw <br />ra <br />U� <br />¢ Lu <br />to <br />00 <br />w <br />a0 <br />O Of <br />O <br />=S - <br />H <br />u- <br />00 <br />_o <br />Z <br />0 ❑ <br />V U) <br />W Lu <br />U) = <br />00 <br />zz <br />o <br />Y 1— <br />cr- U <br />J0 <br />¢of <br /><a <br />=w <br />�ry <br />w0 <br />�= w <br />U D <br />w❑ <br />_`t uJ <br />¢� <br />w0 <br />¢_ <br />0Q <br />�z <br />U � <br />Wo <br />H <br />00-5 <br />aw <br />I- 0 <br />O U <br />o: <br />Z <br />a0 <br />O F- <br />U U <br />oW <br />0E- <br />�0 <br />ft <br />w� <br />m= <br />:D cD <br />V.0w <br />wa <br />¢O <br />CO <br />Z cn <br />¢Y� <br />= J <br />00 <br />U w <br />Lu <br />Q U <br />0 ¢ <br />Z U) <br />Qz <br />w O <br />❑ W Z z <br />W ❑ <br />F— <br />U <br />J <br />J <br />W <br />ry <br />U <br />w <br />U <br />< <br />z <br />o <br />a <br />W <br />It <br />w <br />U <br />Z <br />O <br />U <br />m <br />O <br />N <br />W <br />CN N <br />� n <br />V! <br />� <br />( )) <br />W <br />0— <br />d' <br />0 <br />N <br />Ot in <br />In <br />301 <br />co <br />HZ <br />Ill Zm <br />WAW <br />f\ <br />in <br />FwN <br />Hw <br />tn�r` <br />N <br />W <br />oQz <br />u <br />a3M <br />of <br />2 <br />n <br />Q <br />U tr1 <br />0 <br />3PN <br />m <br />Q <br />NIn <br />r3 <br />�IN <br />z w w <br />❑ U) <br />9 <br />2 <br />V" <br />U <br />CD <br />N <br />cM <br />N <br />N I <br />o C%� <br />V <br />