Taken from blueprints supplied by the Florida East Coast Railway Company. My thanks to them for their generous cooperation. These figures are for the instruction of fine-scale modelers. Stresses are given in 1000 #.
Pluses indicate compression; minuses indicate tension.
Dead Load Dead Load 20% Live Impact Total Load Unit Member Tower Counterweight Impact Load Load + - Stress ------------------------------------------------------------------------------------- 18-17 +550 +2470 +361.0 +276 3657 12.5 17-27 +320 +2359 +472 +208.0 +154 3151 +12.5 27-21 +420.0 +1248 +272.0 +201.0 2141.0 +10.8 ------------------------------------------------------------------------------------- 21-26 +475.0 +1248 +360.0 +250.0 2333.0 +10.8 18-20 -360.0 -1627 -238.0 -182.0 2407 -16.0 20-22 -360.0 -704.0 -238 -182.0 1484 -16.0 ------------------------------------------------------------------------------------- 22-26 -240.0 -630 -182 -126.0 1178.0 -16.0 19-27 -350.0 -1795 -390.0 -288.0 2825.0 -16.0 19-22 -350.0 -84.0 -390.0 -288.0 1112.0 -16.0
Dead Load Dead Load 20% Live Impact Total Load Unit Member Tower Counterweight Impact Load Load + - Stress ------------------------------------------------------------------------------------- 21-22 +70.0 117.0 +108.0 295.0 +10.8 17-22 +230.0 +111.0 174.0 +148.0 663.0 +11.4 21-24 -50.0 -201.0 -187.0 438.0 -16.0 ------------------------------------------------------------------------------------- 17-20 -100.0 -167.0 -262.0 -223.0 752.0 -16.0 15-16 -400.0 +618.0 +242.0 660.0 600.0 12.8 16.0 15-20 +940 +188.0 1128.0 12.5
Dead, live, impact and total loads on the floors. First image is of main truss; second of bottom laterals. Note: Numbers 18, 20, 22, 24 and 26 in the two illustrations below correspond; no others do. Drawing of bottom laterals is not to scale.
Member Shears in 1000 # Moments in 1000 ft. lbs. D.L. L.L. Imp. Total D.L. L.L. Imp. Total -------------------------------------------------------------------------------------- Panel 1: Stringer span 36' 10.0 108.0 103.0 221.0 93.0 868.0 832.0 1793.0 -------------------------------------------------------------------------------------- Panel 2: Stringer span 36' 10.0 108.0 103.0 221.0 93.0 868.0 832.0 1793.0 Floor beam at 20 48.5 262.0 233.0 533.5 473.0 2528.0 2150.0 5151.0 -------------------------------------------------------------------------------------- Panel 3: Stringer span 24' 6.0 84.0 82.0 172.0 35.0 431.0 423.0 889.0 Floor beam at 22 39.7 232.0 208.0 479.7 388.0 2235.0 1990.0 4613.0 -------------------------------------------------------------------------------------- Panel 4: Stringer span 24' 6.0 84.0 82.0 172.0 35.0 431.0 423.0 889.0 Floor beam at 24 30.7 202.0 184.0 416.7 301.0 1949.0 1810.0 4060.0 Floor beam at 26 24.0 178.0 176.0 378.0 232.0 1722.0 1702.0 3656.0