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�i <br />luaYd �IabliYiYl�lt n <br />ATTIC VENTILATION CALCULATIONS - Al <br />ATTIC VENTILATION REQUIRED <br />UPPER VENTILATION PROVIDED <br />1/150 Rule <br />1/300 Rule <br />Ridge <br />Off -Ridge <br />(No Upper Ventilators <br />(Must Provide Upper Ventilators) <br />Vent Amt <br />Amt. <br />Req.) <br />(Ft.) <br />Total <br />Ventilation <br />ATTIC <br />Provided <br />SPACE <br />SQ. FT. <br />Total SQ. <br />SQ. FT. <br />SQ. IN. of <br />by Upper <br />SQ. IN. of <br />ventilation of vented <br />of <br />of <br />vented <br />ventilation to <br />be provided <br />IN. oftilation <br />IN. of <br />SQ.lation <br />Ventilators <br />Ventilators <br />(See Elev) <br />required soffit <br />ti <br />ventilation <br />lation <br />soffit <br />by upper <br />Ventilation <br />Venti <br />needed <br />required <br />needed <br />ventilators <br />Main <br />0.000000 <br />0.000000 <br />Floor <br />33 <br />32 <br />5 <br />16 <br />1 <br />8 <br />0.0 <br />0.0 <br />0.0 <br />(Zone 1) <br />Upper <br />7 <br />2.000000 <br />Floor <br />1535 <br />1474 <br />211 <br />737 <br />53 <br />368 <br />381.0 <br />105.0 <br />276.0 <br />(Zone 2) <br />*'NOTE" <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ZONE-1 <br />ATTIC SPACE <br />33 SQ. FT. <br />ROOF PLAN <br />SCALE: Y4=l'-0" <br />Attic Ventilation I <br />Attic Ventilation to be in compliance with the Florida Building Code 6th Edition <br />(2017) Residential R806. <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 />(measured vertically) below the ridge or highest point of the space, with the <br />balance of the required ventilation provided by save or comice vents. <br />-CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN" <br />(Values to be verged with Manufacturer Specifications) <br />• RIDGE VENTS 15 SQ. IN. OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SO. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ, IN. OF NET FREE AREA / SQ. FT. <br />i <br />���erarr�ertrr��,.011 ��s <br />ti <br />.. ;•U Cb <br />�O <br />L <br />� Uj <br />• <br />Ro"� <br />To the best of the Engineer's knowledge, information and belief, <br />the structural plans and specifications contained within these <br />drawings comply with the 2017 <br />Florida Building Code - <br />Residential 6th Edition. Engineer's signature and seal is only for <br />the structural engineering portions of the drawing pages bearing <br />Engineer's signature and seal. <br />F' <br />e� a <br />CO E cc <br />oQ C f71 �p N 9• <br />CSN N C elf LL <br />W <br />fyi <br />=LL LLLLa <br />M <br />a <br />N W h <br />W <br />ej fA LL 0 ujCL <br />> .0 <br />0=O <br />Z <br />�V� <br />p '4)' m m <br />W <br />ILN <br />rn 0) CL <br />N C G <br />m <br />a M < U <br />Z <br />00013 <br />W <br />C9 <br />Z� <br />zo <br />Q� <br />-� <br />13 <br />U <br />� a <br />Opro <br />W � <br />N <br />�� <br />_U <br />£ <br />Q 9 A <br />• <br />�Q <br />M <br />J <br />' <br />o <br />H <br />Z. <br />o g <br />yppy.� <br />F <br />Q <br />f6 O <br />C <br />E V <br />r0O <br />~ <br />�z <br />z 0 <br />$yay� <br />Up <br />ZQao�� <br />C <br />O <br />a 0 <br />az <br />w� <br />w <br />ado <br />�s <br />rq <br />,_ <br />O <br />i <br />z <br />z <br />�z <br />a <br />g� <br />O <br />w <br />W <br />Q 3 <br />� <br />o <br />� <br />aLLu <br />N <br />lllllllll� <br />Y <br />UIF- <br />ar <br />Ov <br />`S <br />0 CV <br />= <br />�L <br />W <br />� <br />C0 <br />U <br />00 <br />y <br />T <br />c <br />O <br />O <br />ra <br />(7 <br />O <br />LO <br />-0 <br />M <br />I� <br />._ <br />= 04 <br />T <br />N <br />= <br />N CD <br />r <br />c0 <br />' N <br />E <br />c <br />c� <br />o <br />Z <br />O <br />E <br />L <br />c <br />a <br />rJ <br />Q p <br />JOB <br />NO: <br />20-3574 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5.0 <br />