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<br /> MAXIMUM ROOF BEAM SPANS
<br /> IN DECIMAL FEET EXAMPLE:
<br /> SCREEN ROOF I SCREEN WALLS POOL ENCLOSURE
<br /> WIND 110 MPH DEFLECTION l/60
<br /> < ---------t COLUMN USED 1----------- >
<br />I 10 'WALL
<br /> ROOF (F) (G) (H) (I) (J) (K) (L) (M) (N)
<br /> BEAM SPACING 2x3 2x3 2x4 2x4 2x4 2x6 2x7 2x8 2x9
<br /> USED PB SMS PB SMS 5MB 5MB 5MB 5MB 5MB
<br /> 4'-0" 18.42 19.08 19,25 19.25 19,25 19.25 19,25 19.25 19.25
<br /> (H) 5'-0" 17.08 17,58 17.75 17,75 17,75 17.75 17.75 17.75 17.75
<br />, 2x4 6'-0" 16,08 16,58 16.75 16,58 16.75 16.75 16.75 16.75 16,75
<br /> PB 7'.0" X 15.58 15.75 15.75 15,75 15.75 15.75 15.75 15.75
<br />,
<br />; 8'-0" X 14.92 15.08 15,08 15.08 15,08 15.08 15.08 15.08
<br />~ I 9'-0" X 14.42 14.42 14,42 14.42 14.42 14.42 14.42 14.42
<br /> 4'-0" 21.08 21.75 21,92 21.75 23.42 , 23.42 23,42 23.42 23.42
<br />, (J) 5' -0" 20.08 20.08 20.25 20.08 21,58 21.58 21.58 21.58 21.58
<br /> 2x4 6'-0" 18.42 18,75 18.92 18,92 20,25 20.25 20,25 20.25 20,25
<br />j 5MB 7'-0" X 17.92 17.92 17.92 19,08 19,08 19.08 19,08 19.08
<br />, 8'-0" X 17.08 17.08 17.08 18,25 18,25 18.25 18.25 18.25 ,
<br /> 9'-0" X 16,42 16,42 16,42 17.42 17.42 17,42 17.42 17.42
<br />.:
<br /> 4'-0" 28,08 28,58 28.75 28,58 29,92 31. 92 31,92 31.92 31,92
<br /> (K) 5' -0" 26,08 26.42 26,58 26,58 27.58 29.25 29.25 29,25 29.25
<br /> 2X6 6' -0" 24,58 24.92 24.92 24,92 25.92 27.42 27.42 27.42 27.42
<br /> 5MB 7'-0" X 23,!'i8 23,75 23,58 24,42 25.92 25,92 25,92 25.92
<br />, 8'-0" X 22.58 22,58 22.58 23.42 24.58 24.58 24.58
<br /> 24.58 .
<br /> 9'-0" X 21.58 21,75 21.75 22,42 23,58 23.58 23,58 23.58
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<br /> 4'-0" 31,58 32.08 32.08 32,08 33,08 34.92 35.92 35,92 35,92 .
<br /> (L) 5'-0" 29.42 29.58 29,75 29,75 30.58 32,25 33.08 33.08 33.08
<br /> 2x7 6'.0" 27.58 27.92 27.92 27,92 28,75 30,08 30.92 30,92 30,92
<br /> 5MB 7' -0' X 26,42 26.58 26.58 27.25 28,42 29,25 29,25 29.25 ,
<br /> 8'.0" X 25.25 25,42 25.42 26,08 27.08 27,75 27.75 27.75
<br /> 9'-0" X 24,25 24,25 24,25 24,92 26,08 26,58 26,58 26.58
<br /> 4'-0" 38,25 38,58 38.58 38,58 39.42 40,92 41. 75 44,25 44,25
<br /> (M) 5'-0" 35.42 35.75 35,75 35,75 36,58 37.75 38.58 40.75 40.75
<br /> 2x8 6'-0" 33.42 33,58 33.75 33,58 34,25 35,42 36,08 37.92 37,92
<br /> 5MB 7'-0" X 31. 92 31.92 31,92 32,58 33,58 34,08 35,92 35,92
<br /> 8'-0" X 30,58 30,58 30.58 31.08 32,08 32,58 34,08 34,08
<br /> 9'-0" X 29,25 29.42 29,42 29,92 30,75 31.25 32,75 32.75
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<br /> 4'-0" 41.92 42,25 42.25 42.25 43,08 44.42 45,08 47.42 48,42 i
<br />(N) 5'-0" 38.92 39.08 39,25 39,08 39,92 41.08 41,75 43.58 44,58
<br />2x9 6'-0" 36,58 36,75 36.92 36.75 37.42 38,42 39,08 40.75 41,58
<br />I 5MB 7'-0" X 34.92 34,92 34,92 35,58 36,42 36,92 38,58 39.25
<br /> 8'-0" X 33,42 33,42 33,42 33.92 34,75 35,25 36.75 37.42
<br /> 9'-0" X 32,08 32,08 32,08 32.58 33.42 33,92 35,08 35,75
<br /> INTERPOLATION BETWEEN VALUES IS PERMISSIBLE
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<br /> r ~ ALUMINUM STRUCTURES MASTER PLAN I
<br /> I ~ ENGI~ERING INC. @ COPYRIGHT AL. INC, 1994 53
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