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,'1t':r7 t:a =- MAXIMUM ROOF BEAM SPANS ~ IN DECIMAL FEET EXAMPLE: SCREEN ROOF I SCREEN WALLS POOL ENCLOSURE ~ WIND 110 MPH DEFLECTION LJ60 ~ < ---------0001 COLUMN USED l----------- > 10 'WALL ROOF (F) (G) (H) (I) (J) (K) (L) (M) (N) ::::m BEAM SPACING 2x3 2x3 2x4 2x4 2x4 2x6 2x7 2x8 2x9 USED PB SMS PB SMS 5MB 5MB 5MB 5MB 5MB :::::::I 4'-0' 18.42 19.08 19.25 19,25 19.25 19.25 19.25 19.25 19,25 ::3 (H) 5'-0' 17.08 17.58 17.75 17.75 17.75 17.75 17.75 17.75 17.75 2x4 6'-0' 16.08 16.58 16.75 16.58 16,75 16,75 16.75 16.75 16,75 ~ PB 7'-0" X 15.58 15.75 15.75 15.75 15.75 15.75 15.75 15.75 8'-0" X 14.92 15.08 15.08 15.08 15.08 15.08 15.08 15.08 9'-0" X 14.42 14.42 14.42 14.42 14.42 14.42 14.42 14.42 ::::m 23.42 4'-0' 21.08 21.75 21.92 21.75 23.42 23.42 23.42 23.42 ::::I (J) 5'-0" 20.08 20.08 20.25 20.08 21.58 21.58 21,58 21.58 21.58 2x4 6'-0" 18.42 18.75 18.92 18.92 20.25 20.25 20.25 20.25 20.25 :::I 5MB 7' -0' X 17.92 17.92 17.92 19.08 19,08 19.08 19.08 19.08 8'-0' X 17.08 17.08 17.08 18.25 18.25 18.25 18.25 18.25 :::J 9'-0' X 16.42 16.42 16.42 17.42 17.42 17.42 17.42 17.42 :::D 4'-0' 28.08 28.58 28.75 28.58 29,92 31,92 31.92 31.92 31.92 (K) 5'-0" 26.08 26.42 26,58 26.58 27.58 29.25 29.25 29.25 29.25 2X6 6'-0" 24.58 24.92 24.92 24.92 25.92 27.42 27.42 27.42 27.42 :::::t 5MB 7'-0' X 23,S8 23.75 23,58 24.42 25.92 25.92 25.92 25.92 8'-0' X 22.58 22.58 22,58 23.42 24.58 24,58 24.58 24.58 . :::I 9'-0' X 21.58 21.75 21.75 22.42 23.58 23,58 23.58 23.58 " ~ 4'-0" 31,58 32.08 32.08 32.08 33,08 34.92 35.92 35.92 35.92 " (L) 5'-0" 29.42 29.58 29,75 29.75 30.58 32.25 33.08 33.08 33,08 ~ 2x7 6'-0" 27.58 27,92 27.92 27.92 28.75 30.08 30.92 30.92 30.92 5MB 7' -0" X 26.42 26,58 26.58 27.25 28.42 29.25 29,25 29.25 8'-0' X 25,25 25.42 25.42 26.08 27.08 27.75 27.75 27.75 ~ 9'-0" X 24.25 24.25 24,25 24.92 26.08 26.58 26.58 26.58 = 4'-0' 38,25 38.58 38.58 38.58 39.42 40.92 41,75 44.25 44.25 (M) 5'-0' 35.42 35.75 35.75 35.75 36.58 37.75 38.58 40.75 40.75 Q 2x8 6'-0' 33.42 33,58 33,75 33.58 34,25 35.42 36.08 37.92 37.92 5MB 7'-0" X 31.92 31.92 31.92 32.58 33.58 34,08 35.92 35.92 :::I 8'-0' X 30.58 30,58 30.58 31.08 32,08 32.58 34.08 34.08 9'-0" X 29.25 29.42 29.42 29.92 30.75 31.25 32.75 32.75 :3 4'-0" 41.92 42,25 ,. 42.25 42.25 43.08 44.42 45,08 47.42 48.42 (N) 5'-0' 38.92 39.08 39.25 39,08 39.92 41.08 41.75 43.58 44.58 :::J 2x9 6'-0" 36.58 36.75 36.92 36.75 37.42 38.42 39,08 40.75 41.58 5MB 7' -0' X 34.92 34.92 34.92 35.58 36.42 36.92 38.58 39.25 :::I S'-O" X 33.42 33.42 33.42 33.92 34.75 35,25 36.75 37.42 9'-0' X 32.08 32.08 32.08 32.58 33.42 33.92 35.08 35.75 ::;I, INTERPOLATION BETWEEN VALUES IS PERMISSIBLE :::I, =, , =11 ~ ALUMINUM STRUCTURES MASTER PLAN ~ ENGI~ERING.INC. @ COPYRIGHT AL, INC, 1994 53 "Y-r 1=1