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SECTION 3A SCREEN, ACRYLIC & VINYL ROOMS Table 3A.1.1-120 Allowable Edge Beam Spans - Hollow Extrusions for Screen, Acrylic or Vinyl Rooms For 3 second wind gust at 120 MPH velocity; using design load of 13.0 #/SF (48.3 #/SF for Max. Cantilever) Aluminum Alloy 6063 T-6 2" x 2" x 0.044" 2" x 2" x 0.055" Load Max. Span 'L' / (bending 'b' or deflection 'd') Load Max. Span 'L' / (bending 'b' or deflection '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'.1" d 6'-3" d 6'-4" d 0'.11" d 5 5'-4" d 6'.7" d 6'.9" d 1'-0" d 6 4'-9" d 5'-10" d 5'-11" b 0'-11" d 6 5'-0" d 6'-3" d 6'-4" d 0'-11" d 7 4'.6" d 5'.7" d 5'-6" b 0'.10" d 7 4'.9" d 5'.11" d 5'-11" b 0'.11" d 8 4'-4" d 5'-4" b 5'.1" b 0'.10" d 8 4'.7" d 5'.8" d 5'-7" b 0'-10" d 9 4'.2" d 5'-0" b 4'.10" b 0'-10" d 9 4'-5" d 5'.5" d 5'.3" b 0'-10" d 10 4'-0" d 4'-9" b 4'.7" b 0'-9" d 10 4'-3" d 5'.2" b 5'-0" b 0'-10" d 11 3'-11" d 4'-6" b 4'-4" b 0'-9" d 11 4'.1" d 4'.11" b 4'-9" b 0'-9" d 12 3'.9" d 4'-4" b 4'-2" b 0'-9" d 12 3'-11" d 4'-9" b 4'-7" b 0'.9" d 3" x 2" x 0.045" 3" x 2" x 0.070" Load Max. Span 'L' / (bending 'b' or deflection 'd') Load Max. Span 'L' / (bending 'b' or deflection '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'.8" d 7'-1" d 7'-2" d 1'-1" d 5 6'-5" d 7'-11" d 8'.1" d 1'-3" d 6 5'-4" d 6'-8" d 6'-9" d 1'.0" d 6 6'-0" d 7'-5" d 7'-7" d 1'-2" d 7 5'-1" d 6'-4" d 6'-4" b 0'-11" d 7 5'-9" d 7'.1" d 7'-3" d 1'-1" d 8 4'-11" d 6'-0" d 5'-11" b 0'-11" d 8 5'-6" d 6'-9" d 6'.11" d 1'-1" d 9 4'-8" d 5'-9" b 5'.7" b 0'-11" d 9 5'-3" d 6'-6" d 6'-6" b 1'-0" d 10 4'.6" d 5'-6" b 5'.3" b 0'-10" d 10 5'-1" d 6'.3" d 6'.2" b 0'.11" d 11 4'-5" d 5'-2" b 5'-0" b 0'-10" d 11 4'-11" d 6'-1" d 5'-11" b 0'.11" d 12 4'-3" d 4'.11" b 4'-10" b 0'.10" d 12 4'-9" d 5'.10" b 5'.8" b 0'-11" d 2" x 3" x 0.045" 2" x 4" x 0.050" Load Max. Span 'L'/ (bending 'b' or deflection 'd') Load Max. Span 'L' / (bending 'b' or deflection 'd') Width (ft.) 1 & 2 Span 3 Span 4 Span Max. Width (ft.) 1 & 2 Span 3 Span 4 Span Max. Cantilever Cantilever 5 7'-1" d 8'-9" d 8'-9" b 1'-4" d 5 9'-2" d 11'-4" d 11'-2" b 1'-9" d 6 6'.8" d 8'-3" d 7'.11" b 1'-3" d 6 8'-8" d 10'-7" b 10'.3" b 1'-8" d 7 6'-4" d 7'-8" b 7'.5" b 1'-3" d 7 8'-2" d 9'-9" b 9'-5" b 1'-7" d 8 6'-1" d 7'-2" b 6'-11" b 1'-2" d 8 7'-10" d 9'-2" b 8'.10" b 1'-6" d 9 5'-10" d 6'-9" b 6'-6" b 1'.1" d 9 7'-6" d 8'.8" b 8'-4" b 1'-5" d 10 5'-7" d 6'-5" b 6'-2" b 1'-1" d 10 7'-3" d 8'-2" b 7'-11" b 1'-5" d 11 5'.5" d 6'.1" b 5'-11" b 1'.0" d 11 6'-11" b 7'-10" b 7'.7" b 1'-4" d 12 5'.3" b 5'-10" b 5'-8" b 1'-0" d 12 6'-8" b 7'-6" b 7'-3" b 1'-4" d Notes: 1. Above spans do not include length of knee brace. Add horizontal distance from upright to center of brace to beam connection to the above spans for total beam spans. 2. Spans may be interpolated. Lawrence E. Bennett, P.E. FL # 16644 CIVIL & STRUCTURAL ENGINEERING P.O. Box 214368, South Daytona, FI32121 Telephone #: (386) 767-4774 Fax #: (386) 767-6556 Email: lebpe@beIlsoulh.nel PAGE 3A-12 @ COPYRIGHT 2006 NOT TO BE REPRODUCED IN WHOLE OR IN PART WITHOUT THE WRITTEN PERMISSION OF LAWRENCE E. BENNETT, P.E.