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Attic Ventilation <br />Attic Ventilation to be in compliance with the Florida Building Code 5th Edition <br />(2014) Residential R806. <br />VENTED SOFFIT 48 SQ. FT. <br />The Minimum net free ventilating area shall be 1/150 of the area of the vented <br />space. The ventilating area may be reduced to 1/300 provided that at least 40% <br />but no more than 50% of the required ventilation is provided in the upper portion of <br />the space to be ventilated.Upper ventilators shall be located no more than 3 feet <br />................:........... <br />.......................................:.:.........:..........::.............................:.:................::................ ' <br />(measured vertically) below the ridge or highest point of the space, with the <br />........................... ...................... 0 d1&W ... 4~ 41 1AW"........................................................................................ <br />• • • Yid Yid Yir Yi► Yi,• Yir Yid Yif Yir Yid aii� Yid Yi► Yid Yid Yi/ Yid Yi► Yid Yir Yii' Yif YY Yi► ewr Yii �ii. �ii� Yi• rii� Yid Yid Yi► Y�� �irY► Yi► �iii� iii� <br />balance of the required ventilation provided by save or cornice vents. <br />•, ;•, <br />ZONE-V^^SS <br />'; ; • <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN - <br />(Values to be verified with Manufacturer Specifications) <br />�.'.' <br />• RIDGE VENTS 15 SO. IN, OF NET FREE AREA / LINEAR FT. <br />ATT I C SPACE 275 SQ. <br />• • • <br />FT. �"' <br />• OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />•SOFFIT VENTS - 7 SQ. IN. OF NET FREE AREA / S0. FT. <br />• allAGIN WEATHERMASTER (Shingle Roof) - 72 SO. IN. OF NET FREE AREA/ FT. <br />(Sq. Ft Sofnt Needed) x 7 = (Sq. In. Needed) / 72 = Amount of allagin Vera Needed <br />;.� ;� <br />�:.•: <br />• LOMANCO DECK -AIR (Shingle Roof) - 9 SO. IN. OF NET FREE AREA / FT. <br />... <br />-Formula: (Sq. Ft. Soffit Needed) x 7 = (Sq. In. Needed) 19 = Linear Ft of Desk -Air Needed) <br />• O'HAGIN (Tile Roof) - 86.25 $0. IN. OF NET FREE AREA / VENT <br />... <br />... <br />... .... <br />. Ft Needed x . In. Needed)188.25 = AmouM of O' Vers N "Fomwla• Soffil 7 =in ceded <br />• (Sq ) (Sq ►� <br />... .... ... .... ... ..... <br />............ ...... <br />•' <br />VENTED SOFFIT 50 SQ. FT. <br />" <br />00 <br />00 <br />0 <br />W <br />::;� <br />'• <br />Io <br />• <br />(;: ' <br />w <br />z <br />•• <br />w <br />ZONE-4 <br />• �:� <br />.� <br />ATTIC SPACE <br />2090 SQ. FT. <br />• <br />rat <br />: <br />.• <br />cYi <br />� <br />�•' •' <br />IL.L_ <br />:.� <br />::. <br />CO <br />::.• <br />W <br />LLj <br />1.7. <br />c1 <br />�:•;� <br />VENTED SOFFIT 7 SQ. FT. <br />� <br />•.;;� <br />• '• <br />OCD <br />.. <br />I <br />W <br />• <br />Z....... <br />:;;� <br />.................. <br />................................................. <br />......... <br />'.:::. <br />' <br />...... ..... <br />'...... ' <br />w <br />� <br />'::.� <br />O <br />.• <br />t.A <br />• <br />'• ..� <br />'. . <br />.:. <br />L L_ <br />u- <br />ZONE-2 <br />VENTED SOFFIT 12 SQ. FT. <br />�•' <br />..Cn -o ....:... <br />'��•� •"'•"��••••��••• <br />ATTIC SPACE <br />VX. <br />W <br />;j <br />VENTED SOFFIT <br />30 SQ. FT. <br />::• <br />:. <br />.• <br />'•'• •l <br />:.•;;� <br />•' :.� <br />• <br />':.� <br />•,;l� <br />..: <br />:.. <br />•' •;� <br />:.. <br />� <br />........................"............ :..:.; . ... ;. <br />o <br />�o7 <br />ZONE-1 <br />.::•� <br />o. <br />L <br />w <br />:,::� <br />'• <br />ATTIC SPACE <br />Z <br />U.j210 <br />.•.� <br />SQ. FT. <br />•.::;� <br />: <br />.. <br />:: <br />..: <br />. <br />. <br />...o ............... ..... ...... <br />.... . ..... .. <br />. ... ... .... ...... <br />....... ........... ... ........ <br />.............. ....... .... <br />........ .... .. . . <br />.... .................. ....... <br />... ... ....... .......... <br />... ......... ... <br />.... ..... ......... <br />VENTED SOFFIT 32 SQ. FT. <br />ROOF PLAN B <br />SCALE: %4"=V-0" <br />ATTIC VENTILATION <br />CALCULATIONS <br />- B <br />����' <br />ATTIC VENTILATION <br />REQUIRED <br />UPPERVENTIlATIONPROVIDED <br />RidpeVerltAmt <br />1/150 Rule <br />(No Upper Ventilators <br />1/300 Rule <br />(Must Provide Upper Ventilators) <br />(FL) <br />Total Ventilation <br />ATTIC <br />Provided by <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ. FT. <br />SQ. IN. of <br />Upper <br />Ventllatas <br />SQ. IN. of <br />ventilation <br />of vented <br />IN. of <br />of <br />vented <br />ventilation to <br />be provided <br />SQ. IN. of <br />SO. IN. of <br />(� Env) <br />required <br />soffit <br />ventilation <br />soffit <br />by upper <br />Ventilation <br />Ventilation <br />needed <br />required <br />needed <br />ventilators <br />0.0 <br />Main <br />0.0 <br />Floor <br />210 <br />202 <br />29 <br />101 <br />7 <br />50 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Main Floc <br />0.0 <br />0.0 <br />(Zane2) <br />30 <br />29 <br />4 <br />14 <br />1 <br />7 <br />-----..- <br />0.0 <br />- <br />o.o <br />o.o <br />- <br />Upper Floor <br />---- <br />-- <br />0.0 <br />0.0 <br />Clone s) <br />165 <br />158 <br />23 <br />79 <br />6 <br />40 <br />- <br />0.0 <br />0.0 <br />0.0 <br />� Floor <br />38.0 <br />0.0 <br />- <br />(Zone 4) <br />2090 <br />2006 <br />287 <br />1003 <br />72 <br />502 <br />570.0 <br />-- <br />- <br />570.0 <br />0.0 <br />'"NOTE*" <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT Fr4VES/SOFFITS AS <br />REQUIRED BY FBC 5th ED. RESIDENTIAL. <br />VENTED SOFFIT LEGEND <br />IF SOFFIT IS LABELED AS "NON -VENTING" FIRE PROTECTION WILL BE INSTALLED <br />AS REQUIRED BY SECTION R302 OF THE FBC 5th EDITION (2014) RESIDENTIAL. IF <br />LABELED AS "VENTED", NO FIRE PROTECTION WILL BE REQUIRED. <br />���•�� VENTED SOFFIT <br />C <br />