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<br />...---.-.- --;- <br /> SCREEN, VINYL, GLASS & MODULAR ROOMS SECTION 3 <br /> Table 3.1.3 Allowable Edge Beam Spans - Hollow Extrusions <br /> For Glass I Enclosed Rooms <br /> Aluminum Alloy 6063 T ~ <br /> For 3 second wind gust at velocity of 120 MPH or an applied load of 28 # Isq. ft." <br /> Trlbutarv Load Width W = Purlln Spaclna <br /> Hollow Sections 5-0"' I 6'-0" 7'-0" I 8'-0" 9'-0" I 10'-0" 11' -0" 12'-0" <br /> Allowable Span 'L' I bend In a 'b' or deflection 'd' <br /> 2" x 2" x 0.044" 4'-4" b 3'.11" b 3'-8" b 3'.5" b 3'-3" b 3'.1" b 2'-11" b 2'-10" b <br /> 2" x 2" x 0.055" 4'-9" b 4'-4" b 4'-0" b 3'.9" b 3'-7" b 3'-4" b 3'-3" b 3'.1" b <br /> 3" x 2" l( 0.045" 5'.1" b 4'.7" b 4'-3" b 3'-11" b 3'-9" b 3'-7" b 3'-5" b 3'-3" b <br /> 1" x 2" x 0.044" 5'.9" b 5'.3" b 4'-11" b 4'.7" b 4'-4" b 4'-1" b 3'-11" b 3'.9" b <br /> to 2" x 2" x Existing .. <br /> :r x 3" x 0.0"5" 6'-5" b 5'.11" b 5'-5" b 5'.1" b 4'-10" b 4'-7" b 4'-4" b 4'-2" b <br /> .-.----...--- <br /> :r x :r I( 0.044" 6'-8" b 6'-1" b 5'.8" b 5'-3" b 4'-11" b 4'.9" b 4'-6" b 4'-4" b <br /> to 2" I( 2" I( EI( Istlng .. <br /> -------------- <br /> 2" I( 2" I( 0.044" 7'-1" d 6'-7" b 6'-1" b 5'.9" b 5'.5" b 5'.1" b 4'-11" b 4'.8" b <br /> with 1" x 2" x 0.040" <br /> Snap Cap Attached .. <br /> 2" x .... l( 0.050" 7'-11" b 7'.2" b 6'-8" b 6'.3" b 5'.11" b 5'.7" b 5'-4" b 5'.1" b <br /> ' For Maximum Spans at wind velocities other than 120 MPH, see Conversion Table 3A on the specification page for tables <br /> at the beginning of this section and example below. <br /> .. See page 3-6 for connection details for 1 x 2 and 2 x 2 to existing 2 x 2. Snap Cap 'snaps' into screw bosses. Therefore, <br /> no fastllners am required for connection of Snap Cap to existing 2 x 2 <br /> Note <br /> Tah""; aSSWTlP. extrusion oriented with longer extrusion dimenSion parallel to applied load <br /> I 'ample rn calcualate maximum span 'L' at 140 MPH wind velOCity for <br /> 2" x ;>" x 0.044" Hollow Extrusion with Load Width = 8' <br /> 1 Find 'L' at 120 MPH: L = 3'-5" <br /> 2. Convert 'L' to decimal feet: L = 3'.5" = 3.42' <br /> 3. Select the appropriate multiplier from the conversion table 3B found on <br /> the specification sheet at the beginning of this section. <br /> . if the span is followed by 'b' use Bending multiplier <br /> - if the span is followed by 'd' use Deflection Multiplier <br /> 4. Multiply 'L' in decimal feet by appropriate multiplier. <br /> 'L' at 140 MPH is 3.42' x 0.87 = 2.98' = 2'-11" <br /> Lawrence E. Bennett, P.E. <br /> CIVIL ENGINEER. DEVELOPMENT CONSUL TANT <br /> P.O. BOX 4368, SOUTH DAYTONA. FL 32121 <br /> TELEPHONE (386) 767-4774 <br /> FAX (386) 767-6556 <br /> SEAL <br /> PAGE <br />@ COPYRIGHT 20U1 <br /> NOT TO BE REPRODUCED IN WHOLE OR IN PART WITHOUT THE WRITTEN PERMISSION OF LAWRENCE E. BENNETT. P.E 3-27 <br />