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<br />SECTION 2 <br /> <br />A TT ACHED & FREEST ANDING COVERS AND UTILITY SHEDS <br /> <br />Table 2.2.1: Allowable Attributable Roof Area per Post for Carports, <br />Patio Covers, and other Open Buildings - ALUMINUM POSTS <br /> <br />-----------~~_.. ----- ------------ ------------~ ----- -- -.- . <br />Aluminum Post <br />Wind Load = 102 MPH 110 MPH I 120 MPH 125 MPH 140 MPH <br />- ------- -- . <br />Applied Load = 17 #/8 . Ft. 20 #/8 . Ft. 23 #18g:i!:n.2Ei #/Sq. Ft. 32 #/Sq. Ft. _ <br />__ ~_axi!!,~!'!.__ ______>-_ Allowable Roof Area In Squa~E~e! for Various Loads on Post <br />H~ht L~~_~1J."!.I:-_b_~--L 2" x 2" x 0.044" Hollow Extrusiqr1.or <br />7' -4" ~~Q?'!"" __ _~____~ 21 103 ____.;.. _ _ 90 <br />8'-7" 1,548 91 . ..77 67 <br />.-9'_10" .(2:64 m----u-71----~-___SO---+ 52 <br />11'-1" 903 5:r----- -45-- 39 <br />________...___._____..__-0-_._ ___________ ---________. .._____._____ ____.__ ._ <br />u_ .J:ieight Load in Lbs ' 2" x 3" x 0.050" Hollow Extrusion or <br />8'-2" ------2)3~_=_--:-=-__=_-_161 ~:==- )~1__- - 119 105 86 <br />9'-6" 2,5_01 _ 147 . 125 109 96 78 <br />10'-11" 1,596 -94--------80-- 69 61 50 <br />12'-3" (fEll --.---'70-------60- 52 46 37 <br />- .--Heigh.r:.. L.o.--a-din-it;st-r3.'-'-X2'~-X-O.070'-'-HO.-TIOW. EX!r:.lJ~ion - Aluminum Alloy 6063 T-6 <br />8'-2" ,3,408 200' 170 ; 148 131 107 <br />--- -9':~V--;--- --2~556---- , -. -150---1 ---128-- -- . ~ 111 98 80 <br />===lQ'~Il~--=L-:- -1~@~_==-::r--=-_-117==!=-:-=-99 :~n-=-l_n._ .?6 76 62 <br />_~11-'=-3~_j__.J. ,491 88 75 _~___.E~__ _ 57 47 <br />____Hel5L~___ Load in Lbs 3" x 3" x 0.040" Roll Formed - Al'::l~~Q..U!f1Alloy ~105H-14 <br />___1.Q'-.Q"__J___~d81__ 140 119 _---t-___104 92 <br />11'-8" . 1,786 . 105 89. 78 69 <br />- ---- ---- i--~--'-'---'-'-'--"'--+--- ---------- .-...-----. n.__-t-..---..--- -- + <br />13'-4" . 1,389 I 82 69 i 60 53 <br /> <br />=?:~t ~ ~o#\~2L"q :i"~631.X0060..R~IT~~~~d.~j~"'in"m A"O:~105 H-14 <br />112~~-1~'" :- t~~~.---:_---~-~~------t---~t~---=1. ~~; ~~~ <br /> <br />14'-8" --- --fioo----1--. -124u---r--105----., 91 81 <br />16'-6" . -1,5 -, . .-.. - . 68 61 <br />~...'. Load i <br />~ 3,408 <br />13'-10" 2,556 <br />15'-1 0"_1 ,_9~?_ _, ___ <br />17'-10" ___ _~ ~~l_n~______ ____ _______ <br /> <br />r- <br /> <br />79 <br />60 <br />46 <br />35 <br /> <br />65 <br />48 <br />38 <br />28 <br /> <br />74 <br />56 <br />43 <br />33 <br /> <br /> <br />86 <br />65 <br /> <br />113 <br />84 <br />66 <br />49 <br />6063 T-6 <br />107 <br />80 <br />62 <br />47 <br /> <br />Example: <br />Find Roof Area Needed; Area = 'A'; Post Spacing ='S'; Structure Projection = 'W' <br />A = S x (W/2 + O.H.); If'S' = 7', W = 12', and O.H. = 2' then: 'Area' = 56 Sq Ft <br />For a 10'-11" post and 120 m.p.h. wind load or 23 # / Sq. Ft. post choices are <br />1) 2" x 3" x 0.044" Hollow Extrusion <br />2) All post sizes listed below the 2" x 3" x 0.044" Hollow Section <br />Note: <br />Where job conditions dictate a post height of 10' in a 120 MPH wind zone, a 3" x 3" Roll Formed <br />COULD NOT BE used because when it is more than 10' tall it can only support 39 SF of roof. On the <br />other hand, a 3" x 3" Fluted Post with a post height of 10'- 7" can support an area of 128 square feet of <br />area. Thus, design must satisfy both height and area requirements. <br /> <br />Lawrence E. Bennett, P.E. <br />aYL ENG#EE1l - oevaCIAENT CONSI.L T ANr <br />P.o. BOX 4368. SOI.11li DAYTONA, FL 32121 <br />TE..EPt-tClN: (0004) 767 - ~ n 4 <br />FAX (0004) 767-6556 <br /> <br />SEAL <br /> <br />PAGE <br /> <br />62 <br /> <br />@ COPYRIGHT 199B <br />NOT TO BE REPRODUCED N WHOlE OR N PART WIDiOUT n-E WRITTEN PERMISSION Of LAWRENCE E. EleIETT, P.E. <br />