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SEAL PAGE SECTION 2 A TT ACHED & FREEST ANDING COVERS AND UTILITY SHEDS Table 2.2.1: Allowable Attributable Roof Area per Post for Carports, Patio Covers, and other Open Buildings. ALUMINUM POSTS I Aluminum Post ~_~~___~~'!d_L()act= u102-'1J1f11-1~_110 MPH! _1~~_MP_H -I 125 MPH ! 140 MPH -. __~.PIi.e..~. . Load = 17..#/8.. q. ~ Ft J 20 #/Sq.. '. Ft. ~. I... 23.. .#.'8g. Ft. .: 26 #/Sq. Ft. . 32 #/8q. Ft. . Maximum Allowabl~ Roof Area in Square Feet for Various Loads on Post -. Height - .. Load in Lbs 2" x 2" x 0.044" Hollow Extrusion or 7'-4" 2,064 121 103 90 79 65 8'-7" 1,548 91 77 67 60 48 9'-10" 1,204 71 60 52 46 38 11'-1" 903 53 45 39 35 28 ,--.- HEligh.t Load in Lbs 2" x 3" x 0.050" Hollow Extrusion or '8'-2" 2,736 161 137 119 105 86 9'-6" 2,502 147 125 109 96 78 10'-11" 1,596 94 80 69 61 50 ; 12'-3" 1,197 70 60 52 46 37 1- --Hei9.~L. . I.h<>.~~Jn_L~ J. 3" x 2" x 0.070" Hollow Extrusion - Aluminum Alloy 6063 T-6 r----=- 8'-2" ; 3,408 I 200 170 148 131 107 ['';l~''j~~li+- -W~ t~~~i- ~~.!~. ~~ ~_~~~~t --.1~~1~+~'i:~J( 0.040" R~~~Fonni" ''':&tnUj AIIO~;'05 H~. 14 74 r- 11'-8" 1,786 I 105 89 78' 69 . 56 C-1i..~_-~~ I -i~389~-.r --82- 69, ; 60 ; 53 ' 43 r- 15'-0" i1 1,042 i 61 52 I 45 i 40 33 ~- ~i!~t : LO;~~U>S i 3" ~ f? 0.060" ~o~~ Form:", .. ~1~7'num AllOr 3~' 05 H.14 113 I 12'-10" 2,700' 159 135! 117 '104 84 14'-8" 2,100 124 105 91 81 66 16'-6" 1,575 93 79 68 61 49 Hei{lht Load in Lbs 3" x 3" x 0.060" Fluted Hollow Extrusion - Aluminum 6063 T-6 11'-10" 3,408 200 170 148- 131 107 ,13'-10" 2,556 150 128 111 98 80 ,- 15'-10" 1,988 117 99 86 76 62 t_~_~J7'-10" 1 ,491 88 75 65 57 47 Example: Find Roof Area Needed; Area = 'A'; Post Spacing ='S'; Structure Projection = 'W': A = S x CNI2 + O.H,); If'S' = 7', W = 12', and O.H, = 2' then: 'Area' = 56 Sq. Ft. For a 10'-11" post and 120 m,p.h. wind load or 23 # I Sq, Ft. post choices are: 1) 2" x 3" x 0,044" Hollow Extrusion 2) All post sizes listed below the 2" x ~" x 0.044" Hollow Section Note: Where job conditions dictate a post height of 10' in a 120 MPH wind zone, a 3" x 3" Roll Formed COULD NOT BE used because when it is more than 10' tall it can only support 39 SF of roof. On the other hand, a 3" x 3" Fluted Post with a post height of 10'- 7" can support an area of 128 square feet of area. Thus, design must satisfy both height and area requirements. Lawrence E. Bennett, P.E. aw. 8GII\EI!Jt - OE\/B.GRBIT CONl!IlL TNIT' P.O. BOX 4388, 80UTH DA VTONA, FL 32121 TE1..EPttON: (1104) 787-4'774 FAX (1104) 787-8558 62 @ COPYRIGHT 1898 NOT TO BE FlEPRalUCED III WHOLE OR III PART WITHOUT ~ WRITTEN PEJUSSlON OF LAWRENCE E. BENETT, P.E.