02-1261 - Laserfiche WebLink

Browse Search

SECTION 2 A IT ACHED & FREE-ST ANDING COVERS AND UTILITY SHEDS T8ble 2.1.1 Allowable Roof Be8m SP8ns for C8rporta, PBtlo Covers, Screen Rooms 8nd Other Open or P8rtl811y Enclosed Buildings with Solid Roofs For 3 second wind gust at velocity of 120 M,PH or an applied load of 21" 'sq. ft. . Aluminum Alloy 1083 T ~ 2- x 3- x 0.045"' Hollow 2- x 3- x 0.045"' Hollow nit Load Max. SDlln 'L' , (bendl na 'b' or deflection 'en Load Max. SDlln 'L' , (bendlllG 'b' or detlectIon 'd') Width (ft.) 1 & 2 Span 3 Span 4 Span Max. Width (ft.) 1 &2 Span 3 Span 4 Span Max. Cantilever Cantilever 5 ~ 5'-9" b s'-r b 1'-S" d 5 S'-S" d 6'-S" b 6'-3" b 1'..e" d 1 5'-3" b 5'-1" b 1'~" d 1 5'-3" b 5'.11" b 5'..e" b 1'-S" d 7 4'--4" b 4'-10" b 4'-S" b 1'-3" d 7 4'.10" b S'-S" b -5'-3" b 1'--4" d a 4'.1" b 4'.r b 4'-5" b 1'-2" d a 4'-7" b 5'.1" b 4'-11" b 1'-3" d 9 3'.10" b 4'--4" b 4'.2" b 1'-2" d 9 4'-3" b 4'-10" b 4'-S" b 1'-3" d 10 3'-S" b 4'.1" b 3'-11" b 1'-1" d 10 4'-1" b 4'-r b 4'-5" b 1'-2" d 11 3'..e" b 3'.11" b 3'-9" b 1'-1" d 11 3'-11" b ..~" b 4'-2" b 1'-2" d 12 3'~" b 3'-9" b 3'-r b 1'-1" d 12 3'-9" b 4'-2" b 4'0{)" b 1'-2" d T x 4- x 0,045" HoUow nit 2- x 4- x 0.044- x 0.100- Self Matlna Beam Load Max. Span 'L" (bending 'b' or cIetIectIon 'eI') Load Max. Span 'L" I 'b' or detlectlon 'eI') Width (ft.) 1 &2 Span 3 Span 4 Span Max. Width eft.) 1 & 2 Span 3 Span 4 Span Max. Cantilever Cantilever 5 S'-S" d 1'-11- d 7'-1" d 1'-6" d 5 7'-S" d 8'-11" b w-r b 2'.1" d 1 5'--4" d w-r d W-S" d 1'-S" d 1 7'-3" d 8'.1" b 7'-10" b 1'-11" d 7 5'0{)" d W-3" d 6'~" d 1'~" d 7 6'-9" b 7' ..e" b 7'-3" b 1'-10" d a 4'-10" d 5'-11" d 6'-1" d 1'-3" d a 6'~" b 7'0{)" b 6'-10" b 1'.9" d 9 4'-S" d 5'-9" d 5'-10" d 1'-3" d I 5'-11" b 6'-S" b 6'-5" b 1'-S" d 10 4'-S" d s'..e" d 5'-S" d 1'-2" d 10 S'-S" b 6'~" b 6'.1" b 1'-S" d 11 4'--4" d S'~" d S'-S" d 1'-2" d 11 5'--4" b 5'-11" b 5'.10" b 1'-r d 12 4'-3" d 5'-2" d 5'~" d 1'-2" d 12 5'-2" b 5'-9" b 5'-r b 1'-6" d T x 5" x O.OSO- x O.1or Sew Matlna Beam r x I- x 0,050" x 0.120- Self Matlna Bellm Load Max. SPIln 'L' , """"1 - 'b' or cIetIectIon 'en Load Max. SDIII 'L" (bendl III 'b' or cIetIectIon 'eI') WIdth eft.) 1 &2 Span 3 Span 4Spen Max. Width eft.) 1 & 2 Span 3Splln 4 Splln Max. Cantilever Csntllever 5 9'-r d 10'-11" b 1O'-r b 2'-r d 5 11'-2" d 12'-S" b 12'-3" b 2'-11" d 1 8'-11" b 10'0{)" b 9' -S" b 2'-S" d 1 1O'~" b 11'-r b 11'.2" b 2'-10" d 7 8'-3" b 9'-3" b 8'-11" b 2'-3" d 7 9'-r b 10'-S" b 1O'~" b 2' -S" d 1 7'-9" b 8'-S" b 8'~" b 2'-2" d 1 8'-11" b 10'-0" b 9' -S" b 2'-r d I 7'--4" b 8'-2" b 7'-11" b 2'-1" d I 8'-S" b 9'-S" b 9'-1" b 2'-5" d 10 6'-11" b 7' .g" b 7' ..e" b 2'0{)" d 10 8'-0" b 8'-11" b 6' -S" b 2'~" d 11 6'-r b 7'-5" b 7'-2" b 1'-11" d 11 7'-S" b 8'..e" b 6'-3" b 2'~" d 12 6'~" b 7'-1" b 6'-10" b 1'-11" d 12 7'~" b 8'-2" b 7'-11" b 2'-3" d · For Maximum Spllns at wind velocltlu other than 120 MPH, ... conversion tables on the specification page for tables at the beginning of this section and example below. NotH: 1_ For high velocity zones, convert to 130 MPH apanl. 2. Above lpans do not Include length of knee bnIce, Add horizontal length of knee brace to above spans for total beam spanl. Example: To calcualate maximum splln 'L' at 140 MPH wind velocity for: 2" x 4" x 0.045" Hollow TIlt section with load WIdth '" 5' and 3 lpan Overhang Condition 1. Find 'L' at 120 MPH: L. 6'-11" 2. Convert 1..' to decimal feet: L . 6'-11" '" 6.92' 3. SeIec:t the eppropriate multiplier from the conversion t8bIe found on the lpecltlcatlon sheet at the beginning of thl8 section, - If the height Is foIIa.ved by 'b' use Bending multiplier. - If the height II foIIa.ved by 'r! use DefIec:tlon multiplier. 4_ Multiply 1..' In decimal feet by appropriate multiplier. 'L' at 140 MPH Is 6.92' x 0,91 '" 6.29' '" 6'.3" Lawrence E. Bennett, P.E. CIVIL ENGlIEER. OEVElOPMENr COHSUl. rANT P.O. BOX 43ll8, SOUTH DAYTONA. Fl32121 TREPHONE (3lI8) 187....n4 FAX (388) 187.e558 SEAl. PAGE 2-26 C COPYRIGHT 2001 NOT TO ae REPRODUCED IN WHOlE OR IN PART WITHOUT THE WRITTEN PERMISSION OF LAWRENCE E_ BENNETT, P_E.