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<br />SECTION 2
<br />
<br />A TT ACHED & FREESTANDING COVERS AND .UTILlTY SHEDS
<br />
<br />Table 2.2.1: Allowable Attributable Roof Area per Post fo'r Carports,
<br />Patio Covers, and other Open Buildings - ALUMINUM POSTS
<br />
<br />Aiumimim 'Posf
<br />102Mpi-t-'--~110nMPH "120MPH 125MPH 140 MPH
<br />:"17_it{~.<i~'f,LL2.Q #/sq.~.T 2~ #/Sq. ~:~=-'~~6Ji[Sq.Ft. : 32 #/Sq, Ft.
<br />Allowable Roof Area in Square Feet for Various Loads on Post
<br />-'2"x 2" x 0.044" Hollow Extrusion or'--" - .
<br />2" x 2" x 0.04S" Sn.!E.Extrusion; - Aluminum Alloy 6063 T-6
<br />2,0641'21 -~--- '103--"- '9C)"---' -0' 79 65
<br />1,548 91 77 67 60 48
<br />1,204 71 60 52 46 38
<br />903 53' '45 'c' '-39'" 35 28
<br />- - ._~ ------_ ___.._________-1-____ __.__L-.....____________
<br />Load in Lbs i 2" x 3" x O.OSO" Hollow Extrusion or
<br />i 2" x 3" x 0.04S" Snap Extrusion; - Aluminum Allo}'6063 T-6
<br />n_~.___161,-----L-,-.J1L--L-J..19----_L- ,. ,!05n.~ 8,6
<br />. ____,147_._n,L__~_.____L.,--109_n,. ,~~_ 78
<br />, .n 94~____~Q_L~~u . ; 61 50
<br />. 70 . 60 I 52 ,46 37
<br />t -. .--" ------- -' -.. .."-. ----- -'-'-- _. ----~_"___.. _.___ .___ - ..... 'u_ _.~
<br />"_3.,,,)(~" x O~O!O'~.l:iollQ.'"'!'.f::x!!:LJ~j()I1.~.Alu".!inumAlloy 6063 T-6
<br />i n?'OO, _ t_EQ- -,L..,1~~ 1}1 107
<br />I 150 i 128 111 98 80
<br />+- -.-fl7~.--------I-n_'--99------- 86"'-" 76 62
<br />'88 ... i .. 75'65 57 47
<br />3" xl'-; x 0.o.40'-'.R:oJLForm:ed - Alu,l11i!1u'!' AII()Y,31OS H-14
<br />140 119 104 92
<br />105 8978 69
<br />8269 60' + 53
<br />61 '52 45 40
<br />.' 3" x3.i x b.06()'" RoirFormed - Aluminum AJloy3105 H-14
<br />... -212- "-'-- T8a-- --T57-'~ -~ 138
<br />159' '135 '117 104
<br />m -124----'.'-106--'." ------81- --'.,~ 81
<br />"9'3' '79' '--68--- ~6T
<br />
<br />Wind Load =
<br />Applied Load =
<br />Maximum
<br />Height Load in Lhs
<br />
<br />7'-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 />9'-6"
<br />10'-11"
<br />12'-3"
<br />Height
<br />10'-0"
<br />11' .8"
<br />13'-4"
<br />15'.0"
<br />Height
<br />11 '.0"
<br />12'.10"
<br />14'-8"
<br />16'-6"
<br />
<br />-~""'.'
<br />~l~
<br />13'-10" .
<br />15',10"
<br />1 7' -1 0"
<br />
<br />2,73Ern
<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 />3,600 -
<br />2,700
<br />2,100
<br />1
<br />
<br />74
<br />56
<br />43
<br />33
<br />
<br />113
<br />84
<br />66
<br />49
<br />
<br />
<br />, 200
<br />. .t-"-n"150'
<br />117-
<br />88
<br />
<br />131'"
<br />---- -98
<br />76
<br />57
<br />
<br />170
<br />-t=--~12~~' -~~~+..
<br />. 99
<br />.t"7S'"
<br />
<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 />F or a 10'-11" post and 120 m.p. h. wind load or 23 # 1 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 />avL EHt3IIEER - OEYELCAENT ca.aL T ANT
<br />P.O. BOX 4368, SOVTH DAYTONA. FL 32121
<br />Ta.EPHOfoE (9004) 7m -.. TT"
<br />FAX (9004) 787-8668
<br />
<br />SEAL
<br />
<br />PAOIE
<br />
<br />52
<br />
<br />@ COPYRIGHT 1997
<br />NOT TO BE REPROOUCED N WHOLE OR N PART WTTliOUT TIE WRTTEN PEfMSSlON OF LAWRENCE E. B81'ETT, P.E.
<br />
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