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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 />Aluminum Post <br />102MPH "110MPH u 120 MPH 125 MpH 140 MPH <br />: 11~7~q.ft. ~2Q:~1.S-q._~t~~_23.-t#ISjiFt.~~It#1~q.Ft. : 32 #/Sq. Ft. <br />AII()~able_Roof Are.aJn Squ~!~f~~tforVarious Loads on Post <br />2" x 2" x 0.044" Hollow Extrusion or <br />2" x 2" x 0.045" Sn~ Extrusion;- Aluminum Alloy 6063 T-6 <br />2,064 121' u103-_u.. 90 -. 19 . 65 <br />1,548 91 11 61 60 48 <br />1,204 71 60 52 46 38 <br />903 53 45 39 35 28 <br />Load in Lbs 2" x 3" x O,050w Rollow ExtrUSion or <br />.. +2"x 3n!...o..045~~Snap Extrusion; - Aluminum Alloy 6063 T-6 . <br />, 1/?_! .1_~~,_. .--l.-..-1~. ..l1 05 86 <br />147 125 I 109 . 96 78 <br />. _ 94" -, ---ao~---;uu u_sg-__ ..-t 61- 50 <br />7060 '52 46 37 <br />3"x 2" x a,OlO" Hollow Extrusion - Aluminum Afloy 6663 T-6 <br />u-20b hf7o----.,-- 148 13-1 107 <br />150 f28 - . 1 11 98 80 <br />,I. , <br />117 -99 . 86 76 62 <br />88 75 9S 57 47 <br />3" x j-" x 0.040" Roll Formed - Aluminum Allo}'3105 H-14 <br />140 119' 104 92 <br />105 89 78 69 <br />82 69 60 53 <br />61 52 45 40 <br />'.3"xjn x O.060"RolIFormed -Aluminum Alloy 3105 H-14 <br />+ u212 u-----180uu-u--157 -- 138 <br />159 135 1 f1 104 <br />124 1bs 91 - 81 <br />- - -- <br /> <br />Wind Load = <br />Applied Load = <br />Maximum <br />Height Load in Lbs <br /> <br />1'-4" <br />8'-7" <br />9'-10" <br />11'-1" <br />Height <br /> <br />8'-2" <br />9'-6" <br />10'-11" <br />12'-3" <br />Height <br />8'-2" <br /> <br />9'-6" <br /> <br />1 0' -11" <br />12'-3" <br />Height <br />1 0'-0" <br />11'-8" <br />13'-4" <br />15'-0" <br />Heia~t <br />11'-0" <br />12'-10" <br />14'-8" <br />16'-6" <br /> <br />:~ <br /> <br />15'-10" <br />11'-10" <br /> <br />2,136 <br />2~502 <br />1,596 <br />1,197 <br />Load in Lbs <br />3,408 - <br />2-,556 <br />1,988 <br />1,491 <br />Load In Lbs <br />2,381 <br />1,786 <br />1,389 <br />1,042 <br />Load in Lbs <br />-3,60b <br />2,700 <br />2,10b <br />1,515 <br />Load I <br />3,408 <br />2,556 <br />1;988-- <br />1,491 <br /> <br />74 <br />56 <br />43 <br />33 <br /> <br />113 <br />84 <br />66 <br /> <br /> <br /> <br />3i.'X j" xO.060"-Flute'dHollow Extr- sion---Ali.imlnum 6063 - <br /> <br /> 170 131 107 <br />150 12S' 98 80 <br />m --99-u--+ 76 62 <br />88 --15- - 57 47 <br /> <br />Example: <br />Find Roof Area Needed; Area = 'A'; Post Spacing ='S'; Structure Projection = 'W': <br />A = S x (W/2 + OH); If'S' = 1', 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" Snap Section <br />2) All post sizes listed below the 2" x 3" Snap Section <br /> <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 />ava. EHf3HI!ER - OE\/ELClflNHT CONl!lU.. T ANT' <br />P.O. BOX -4388, SOUTH DAYTONA. FL 32121 <br />TEl..EPHClf-E (904) 787-4T74 <br />FAX (904) 787-8668 <br /> <br />8EAl. <br /> <br />PAGE <br /> <br />52 <br /> <br />@ COPYRIGHT 1997 <br />NOT TO BE REPRODUCED N WHOLE OR N PART wmtOUT TlE WRTTEN PERMSSION OF LAWRENCE E. BE/>IIETT, P.E. <br />