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SCREEN. ACRYLIC & VINYL ROOMS SECTION 3A Table 3A.2.1 Allowable Upright Heights, Chair Rail Spans or Header Spans for Screen, Acrylic or Vinyl Rooms Aluminum Alloy 6063 T-6 For 3 second wind gust at 110 MPH velocity; using design load of 13.0 #/SF Tributary Load Width 'W' = Purlin Spacing Sections 3'-0" I 3'-6" I 4'-0" I 4'-6" I 5'-0" I 5'-6" I 6'-0" I 6'-6" I 7'-0" I 7'-6" Allowable Height 'H' / bending 'b' or deflection 'd' 2'" x 2" x 0.044" Hollow 7'-{'J b 6'-11" b 6'-6" b 6'-2" b 5'-10" b 5'-7" b 5'-4" b 5'-1" b 4'-11" b 4'-9" b 2" x 2" x 0.055" Hollow 8'.10" b 8'-2" b 7'-8" b 7'-2" b 6'-10" b 6'-6" b 6'-3" b 5'-11" b 5'-9" b 5'-7" b 3" x 2" x 0.045" Hollow 8'-4" b 7'-8" b 7'-2" b 6'-9" b 6'-5" b 6'-2" b 5'-10" b 5'-8" b 5'-5" b 5'-3" b 3" x 2" x 0.070" Hollow 11'-1" b 10'-3" b g'-7" b 9'.1" b 8'-7" b 8'-2" b 7'-10" b 7'-7" b 7'-3" b 7'-0' b 2" x 3" x 0.045" Hollow 10'-2" b 9'-5" b 8'-9" b 8'-3" b 7'-10" b 7'-6" b 7'-2" b 6'-11" b 6'.8" b 6'-5" b 2" x 4" x 0.050" Hollow 10'-8" b 9'.11" b 9'-3" b 8'.9" b 8'-3" b 7'-11" b 7'-7" b 7'-3" b 6'-11" b 6'-9" b 2" x 5" x 0.062" Hollow 13'-9" b 12'-9" b 11'.11" b 11'-3" b 10'-8" b 10'-2" b g'-g" b g'-4" b g'-O" b 8'-9" b 2" x 4" x 0.046" S.M.B. 15'-6" b 14'-4" b 13'-5" b 12'-8" b 12'-0" b 11'-5" b 10'-11" b 10'-6" b 10'-2" b 9'-10" b 2" x 5" x 0.050" S.M,B. 18'-6" b 17'-1" b 16'-0" b 15'-1" b 14'-4" b 13'-8" b 13'-1" b 12'-7" b 12'-1" b 11'.8" b 2" x 6" x 0.050" S.M.B. 19'-3" b 17'-10" b 16'-8" b 15'-9" b 14'-11" b 14'-3" b 13'-8" b 13'-1" b 12'-7" b 12'-2" b 2" x 2" x 0.044" Snap 9'-2" b 8'-6" b 7'-11" b 7'-6" b 7'-1" b 6'-9" b 6'-6" b 6'-3" b 5'-11" b 5'-9" b 2" x 3" x 0.045" Snap 10'-5" b g'-7" b 8'-11' b 8'-6" b 8'-1' b 7'.8" b 7'-4" b 7'-1" b 6'-10" b 6'-7" b 2" x 4" x 0.045" Snap 11'-3" b 10'-5" b g'-g" b 9'-2" b 8'-8" b 8'-3" b 7'.11" b 7'-7" b 7'-4" b 7'-1" b 3" x J" x 0.045" Fluted 9'-1" b 8'-5" b 7'-10' b 7'-5" b 7'-0" b 6'-8" b 6'-5" b 6'-2" b 5'-11" b 5'-9" b J" x 3" x 0.060" Square 11'-2" b 10'-4" b 9'-8" b 9'-1" b 8'-8" b 8'-3" b 7'-11" b 7'-7" b 7'-4" b 7'-1" b 3" x J" x 0.093" Square 16'-0" b 14'-10" b 13'-11" b 13'-1" b 12'-5" b 11'-10" b 11'-4" b 10'-11" b 10'-6" b 10'-2" b 3" x 3" x 0.125" Square 19'-1" b 17'-8" b 16'-7" b 15'-7" b 14'.10" b 14'-1" b 13'-6" b 12'-11" b 12'-6" b 12'-1" b 4" x 4" x 0.125" Square 24'.9" b 22'-11" b 21'-5" b 20'-2" b 19'-2" b 18'-3" b 17'-6" b 16'-9" b 16'.2" b 15'-8" b For 3 second wind gust at 120 MPH velocity; using design load of 15.0 #/SF Tributary Load Width 'W' = Purlin Spacing Sections 3'-0" I 3'-6" I 4'-0" I 4'-6" I 5'-0" I 5'.6" I 6'-0" 6'-6" I 7'-0" I 7'-6" Allowable Height 'H' / bending 'b' or deflection 'd' 2" x 2" x 0.044" Hollow 6'.11" b 6'-6" b 6'-1" b 5'-9" b 5'-5" b 5'-2" b 4'-11" b 4'-9" b 4'-7" b 4'-5" b 2" x 2" x 0.055" Hollow 8'-2" b 7'-7" b 7'-1" b 6'-8" b 6'-4" b 6'-1" b 5'-10" b 5'-7" b 5'-4" b 5'.2' b 3" x 2" x 0.045" Hollow 7'-9" b 7'-2" b 6'-8" b 6'-4" b 5'-11" b 5'-8" b 5'-6" b 5'-3" b 5'-1" b 4'-11" b 3" x 2" x 0.070" Hollow 10'-4" b g'.7" b 8'-11" b 8'-5" b 8'-0" b 7'-8" b 7'-4" b 7'-0" b 6'-9" b 6'-6" b 2" x 3" x 0.045" Hollow 9'-5" b 8'-9" b 8'-2" b 7'.g" b 7'-4" b 6'-11" b 6'-8" b 6'-5" b 6'-2" b 5'-11" b 2" x 4" x 0.050" Hollow 9'.11" b 9'-2" b 8'-7" b 8'-1" b 7'-8" b 7'-4" b 7'-0" b 6'-9" b 6'-6" b 6'.3" b 2" x 5" x 0.062" Hollow 12'-10" b 11'-11" b 11'-1" b 10'-6" b 9'.11" b g'-6" b 9'-1" b 8'-9" b 8'-5" b 8'-1" b 2" x 4" x 0.046" S.M.B. 14'-5" b 13'-4" b 12'-6" b 11'.10" b 11'-2" b 10'-8" b 10'.3" b 9'-10" b 9'-5" b 9'-2" b 2" x 5" x 0.050" S.M.B. 17'-3" b 15'-11" b 14'-11" b 14'.1" b 13'-4" b 12'-9" b 12'-2" b 11'-8" b 11'-3" b 10'-11" b 2" x 6" x 0.050" S.M.B. 17'-11" b 16'-7" b 15'-6" b 14'.8" b 13'-11' b 13'-3" b 12'-8" b 12'-2" b 11'-9" b 11'-4" b 2" x 2" x 0.044" Snap 8'-6" b 7'-11" b 7'-5" b 6'-11" b 6'-7" b 6'-4" b 6'-0" b 5'.9" b 5'-7" b 5'-5" b 2" x 3" x 0.045" Snap g'-8" b 8'-11" b 8'-5" b 7'-11" b 7'-6" b 7'-2" b 6'-10" b 6'-7" b 6'-4" b 6'-1" b 2" x 4" x 0.045" Snap 10'-5" b 9'-8" b 9'-1" b 8'-6" b 8'-1" b 7'.g" b 7'-5" b 7'-1" b 6'-10" b 6'.7" b 3" x 3" x 0.045" Fluted 8'.5" b 7'-10" b 7'-4" b 6'-11" b 6'-6" b 6'.3" b 5'.11" b 5'-9" b 5'-6" b 5'-4" b 3" x 3" x 0.060" Square 10'-5" b 9'-7" b 8'-11" b 8'-6" b 8'-0" b 7'.8" b 7'-4" b 7'-1' b 6'-10" b 6'.7" b 3" x 3" x 0.093" Square 14'.11" b 13'.10" b 12'-11" b 12'-2" b 11'-7" b 11'-0" b 10'-7" b 10'-2" b g'-g" b 9'-5" b 3" x 3" x 0.125" Square 17'-9" b 16'-6" b 15'-5" b 14'-6" b 13'-9" b 13'.2" b 12'-7" b 12'-1" b 11'-8" b 11'-3" b 4" x 4" x 0.125" Square 23'-0" b 21'-4" b 19'-11" b 18'.9" b 17'-10" b 16'-11" b 16'-3" b 15'-8" b 15'-1" b 14'-7" b 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. REVISED APRIL 2007 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 Emaa: lebpe@bellsouth.net @ COPYRIGHT 2006 NOT TO BE REPRODUCED IN WHOLE OR IN PART WITHOUT THE WRITTEN PERMISSION OF LAWRENCE E. BENNETT, P.E. PAGE 3A-25