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PHEASANT RUN FLAT CAR <br />PORTABLE BRIDGE SPECIFICATIONS <br />LOCATION : HAUL ROAD ON SITE OVER THE ROCKY FORD HIGH LINE CANAL <br />STRUCTURE TYPE : RAILROAD FLAT CAR <br />SPAN LENGTH : MAXIMUM SPAN 40 FEET PLUS OR MINUS <br />SKEW : HAUL ROAD AND BRIDGE ARE PERPENDICULAR TO THE ABUTMENTS <br />STRUCTURE WIDTH: 14 FT. OUT TO OUT OF TIMBER DECK, FLATCAR IS APPROXIMATELY $ FT. WIDE <br />BEAM TYPES : TYPICAL FLAT CAR CONSISTS OF LARGE MAIN GIRDERS ALONG THE CENTERLINE OF <br />THE CAR WITH LIGHTER WEIGHT EXTERIOR BEAMS ALONG THE EDGES. THE SIZES AND <br />RELATIVE STIFFNESS RATIOS BETWEEN THE INTERIIOR AND EXTERIOR BEAMS VARY <br />PER EACH FLAT CAR LENGTH. THE DECK WILL BE DESIGNED FOR THE SUPERIMPOSED <br />LOADS THAT ARE REQUIRED FOR THE MINING OPERATION APPROXIMATELY 21 TONS <br />PER LOADED TRUCK. A SAFETY FACTOR OF 2.5 WILL BE USE FOR DESIGN LOADS. <br />DECK : TIMBER DECK CONSISITING OF 4" X 12" PLANKS AT 1 5" ON CENTER. LONGITUDINAL RUNNERS <br />UNDER EACH WHEEL LINE (TRACK) CONSISTING OF (3) 4' X 12' PLANKS. A STEEL PIPE RAILING <br />SHALL BE INSTALLED. <br />ABUTMENTS : CONSISTING OF CONCRETE BLOCKS APPROXIMATELY 24" X 24" X 72" STACKED AND <br />SET INTO PLACE BY TAMPING AND COMPACTING ROAD BASE GRAVEL IN AND AROUND THEM <br />TO FORM A STEADY BEARING FOR THE ENDS OF THE RAIL ROAD FLAT CAR. THE ABUTMENTS SHALL <br />BE SET BACK FROM THE CANAL BANK APPROXIMATELY 5 FEET OR MORE TO MAKE SURE THAT <br />THE EARTH BELOW WILL NOT SHEAR OFF INTO THE CANAL. <br />RAIL ROAD FLAT BED CAR <br />WITH WHEELS REMOVED <br />STEEL PIPE RAILING CENTER LINE 70 TON CAPACITY (140,000 LBS) <br />OF DITCH <br />STACKED CONCRETE BLOCKS <br />TO FORM THE ABUTMENTS <br />TYPICAL BOTH ENDS <br />COMPACTED ROAD BASE ~ O ~ 1 .MAX SPA N <br />BOTH ENDS <br />a'-o" 4 FEET FREE BOARD <br />ir,c. <br />zoos <br />