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MAXIMUM ROOF BEAM SPANS IN DECIMAL FEET SCREEN ROOF I SCREEN WALLS WINO 110 MPH DEFLECTION U60 ~ 1\ . ' ~ \ 1- ii~ \\ \ ~ 'I: EXAMPLE. P"OOlENClOSURE <_______-[ COLUMN USED. )---> 8 . WALL /"'\ F.:):);:: I (G) (H) (I) (J) (K) (L) 1M) iN) SEAM SPACING r:11. 2x3 2X4 2x4 2x4 2x6 2x7 2xB 2,,9 I PB SMS PB SMS 5MB 5MB 5MB 5MB 5MB USED i . '-.:./ ! 4'.0. 18.42 19.08 19.25 19.25 .19,25 19.25 19.25 19.25 19.25 ;'Hf r 5'.0' 17.0B 17.58 17.75 17.75 17.75 17.75 \1.75 1775 1775 2,..4 , 6'-0' 16.08 16.58 16.75 16.58 16.15 16.75 16.75 16.75 1575 "B I 7'-0' 15.25 15.58 15.75 15.75 15.75 15.75 35.75 15.75 1575 r 8'-0' 14.58 14.92 15.08 15.08 15.08 15.08 15.08 15.08 1508 f r 9'.0' 13.92 14.42 .14.42 14.42 14.42 14.42 14.42 14.42 \4.42 , I I 4'.0' 2\08 21.75 21.92 21. 75 23.42 23.42 2342 2342 I 2342 ! ~~ :' r 5'.0' 20.08 20.08 20.25 20.08 21.58 21.58 21.58 21 58 21.5il I , ., . i 6'.0' 18.42 18.75 18.92 18.92 20.25 20.25 20.25 20.25 2025\ -'~ s~.~a i 1'-0' 17.42 .17.92 17.92 17.92 19.08 19.08 19.08 1905 19.08 i I 8'-0' 16.75 17.08 17.08 17.08 18.25 18.25 18.25 16 ::5 tS ~5 I I ~'.O' 16.08 16.42 16.42 16.42 17.42 17.42 17.42 17,-12 \ 1742 ! ! 4'.0' 28.08 28.58 28.75 28.58 29.92 31.92 31.92 3192 31921 \") 5'.0' ~ 26.42 26.58 26.58 27.58 29.25 29.25 2925 '2925 \ , 2X5> 6'.0'(' 24.5~ 24.92 24.92 24.92 25.92 27.42 27.42 2742 27 ~2 I I SI.~8 7'.0' --"CJ.25 23.58 23.75 23.58 24.42 25.92 25.92 2592 2592 I I 8'-0' 22.25 22.58 22:58 22.58 23.42 24.58 24.58 2458 I ~4 58 g'.O- 2 \.42 21.58 21.75 2U5 22.42 23.58 23.58 23Se \ ~3 SS I 4'.0' 31.58 32.08 32.08 32.08 33.08 3492 35.92 3592 I 3: ~"2 (ll 5'.0' 29.42 29.58 29.75 29.75 30.58 32.25 33.08 3305 I 3303 I 2"#.7 6'.0' 27.5(5 27.92 27.92 .27.92 28.75 30.08 30.92 3092 I 30 g: sr.i9 7'-0' .26.25 26.42 26.58 26.58 27.25 26.42 29.25 29.25 T 292: i 8'.0' 25.06 25.25 25.42 25.42 26.06 27.08 2775 21 75 T ....~ '":": .... ...; : 9'.0' 23.92 24.25 24.25 24.25 24.92 '26.06 26 58 . 2658 I ~ ~~ , - ~ ",.. 4'.0' 38.25 38.58 38.58 38.58 39.42 40,92 41 75 44.25 1 .:.: 25 (r_~) 5'-0- 35.42 35.15 35.75 35.75 36,58 37.75 38.58 40.75 4:):'5 ' : 2A8 6'.0' 33.42 33.58 33.75 33058 34.25 35.42 36.08 37.92 37 ~~ . 1 5MB 7'.0' 31.7' . 31.92 31.92 31.92 32.58 33.58 34.08 3592 3S 9::: \ ; I 8'.0' 30.25 30.58 30.58 30.58 31.08 32.08 32.56 3408 3': :s ; g'.O' 29.06 29.25 29.42 29.42 29.92 30.75 31.'25 32.75 3275 : 4'.0' 41.92 42.25 42.25 42.25 43.06 4442 4508 47.:2 ! ~e ~:? (N) 5'-0- 38.92 39.08 39.25 39.08 39.92 41.08 41. 75 4356 I ~~ 55 ! 2xg 6'.0' 36.56 36.75 36.92 36.75 37.42 36.42 39.08 .:0751 4 \ S6 ' , 5MB 1'-0' 34.92 34.92 34.92 34.92 35.58 36.42 36.92 38.56 I 3925 I 8'.0' 33.25 33.42 33.42. 33.42 33.92 34.75 35.25 36.75 ! 37A2 . 9'.0' 31.92 32.08 32.08 32.08 32.58 33.42 33.92 '35.08 ~ .,- .,.- .....: ,~ INTERPOLATION BETWEEN VALUES IS PERMISSIBLE -,' , ~ ALUNINUN S,"UCTURES .JASTER PU.' ENGIEBIING. INC.@ COPYRIGHT At. ItlC 19~o\ "rT :I' . ...