Laserfiche WebLink
ATTIC VENTILATION CALCULATIONS - Al (TRA) <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 />of vented <br />IN. ofSQ. <br />of <br />ventilationt <br />o <br />IN. of <br />SQ. IN. of <br />Ventilators <br />ventilation <br />soffit <br />ventilation <br />vented <br />be provided <br />Ventilation <br />Ventilation <br />(See Elev) <br />required <br />needed <br />required <br />soffit <br />by upper <br />needed <br />ventilators <br />Main <br />29.00000 <br />1.000000 <br />Floor <br />2373 <br />2278 <br />325 <br />1139 <br />81 <br />570 <br />0 <br />573.0 <br />435.0 <br />138.0 <br />(Zone 1) <br />**NOTE** <br />GENERAL CONTRACTOR MUST ENSURE THAT PROPER VENTILATION IS PROVIDED AT EAVES/SOFFITS AS <br />REQUIRED BY FBC 6th ED. RESIDENTIAL. <br />ROOF PLAN - ELEV-Al <br />SCALE: %4"=1'-0" <br />Attic Ventilation <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 11300 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 eave or cornice vents. <br />**CALCULATIONS BASED ON THE FOLLOWING VALUES, SEE ROOF PLAN** <br />(Values to be verified with Manufacturer Specifications) <br />• RIDGE VENTS 15 SQ. IN, OF NET FREE AREA / LINEAR FT. <br />• OFF -RIDGE VENTS 138 SQ. IN. OF NET FREE AREA / UNIT <br />• SOFFIT VENTS 7 SQ. IN. OF NET FREE AREA / SO. FT. <br />filly/ /j <br />r <br />"�011111I <br />nw <br />0- <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 />N <br />Q <br />aa pp <br />00 o U <br />pipp <br />— N it <br />w N m <br />U. <br />M <br />cc <br />� � R <br />M M <br />J'* W <br />u_ J a <br />.�f <br />13 <br />N <br />MALL <br />—rvN <br />° W W <br />a 4 <br />O� <br />Z <br />w@o�W <br />m�¢Zzoo <br />�¢o2"n <br />J 0 a <br />Z <br />I IL <br />L <br />co 0 <br />N thZ <br />OF <br />= <br />OU <br />❑❑❑ <br />W <br />v M � <br />Z N 0 <br />O O <br />Z � <br />QQN <br />Z O Q <br />Q <br />J _ <br />Nn <br />N <br />M <br />'Zr� �O <br />1 <br />�1 <br />V O <br />N v <br />w <br />� <br />L <br />U <br />OLLj <br />s <br />w� <br />Ln <br />wRigJ <br />= L <br />�I <br />U o <br />W I <br />Y <br />• <br />0 <br />N O� <br />t` <br />O <br />O <br />w <br />M <br />M <br />z � <br />o <br />z <br />Z <br />LL <br />Q O <br />z� <br />W O <br />Z�N <br />Q <br />CU <br />O <br />s <br />UO <br />~ � <br />oa <br />o <br />O <br />O <br />CV <br />L <br />ap <br />Q z <br />wo <br />6 <br />�� <br />w w <br />rx� <br />ro <br />C <br />C <br />o <br />Y <br />m 0 <br />z r <br />oz <br />T z <br />Z <br />N J <br />m <br />c� <br />g rwn <br />CtZ <br />02 <br />4a <br />5 <br />a z <br />ao <br />�� <br />r=-k <br />=3 <br />O <br />z <br />¢ <br />7r <br />K O <br />O <br />cfl <br />w <br />o it <br />z¢ <br />a t <br />o - <br />U?i <br />m <br />r` <br />(0 <br />.> <br />; <br />r <br />.0- <br />n <br />O <br />1.L <br />m <br />W <br />T <br />� <br />0 O <br />� <br />J <br />N <br />T <br />Ln <br />E <br />c <br />z <br />E 0 <br />� , <br />a <br />E <br />0 � <br />'0�? <br />a o <br />4) <br />JOB <br />NO: <br />20-4941 <br />SCALE : <br />AS NOTED <br />SHEET NO. <br />5 <br />