Railroad Structures and Estimates |
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abutments Approximate cost asbestos Ash Pit average ballast bars Base of Rail boiler Bolt Brace brick bridge built Bunk cars cast iron cedar sills cent centers cinder coal Conc construction crane creosote crossing cubic yard culvert doors double drain Drop Siding engine house estimated Excavation feet fence fill floor foundation frame Freight frog gate girders grade gravel horsepower iron joint length lineal foot load locomotive manganese Masonry material mile piers piles pipe plank plate platform posts pump purlins QUANTITIES railway Rall reinforced concrete rock rods roof sand screw spikes SECTION shed single track slabs Slope SNOW SHEDS space span standpipe station steam steel stone storage street subgrade switch TABLE tank Tar Paper thick timber tons Total track elevation Train Shed transfer table trestle trusses tunnel turnout turntable usually Valve weight wire wood wooden zinc chloride
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Page 430 - All cast-iron pipes and fittings must be uncoated, sound, cylindrical and smooth, free from cracks, sand holes and other defects, and of uniform thickness and of the grade known in commerce as "extra heavy.
Page 44 - includes all districts of a railway having a single main track, with a traffic that is less than the minimum prescribed for Class "A...
Page 31 - For highway bridges and trestles, the unit stresses may be increased 25 per cent. For buildings and similar structures, in which the timber is protected from the weather and practically free from impact, the unit stresses may be increased 50 per cent.
Page 46 - In the theory upon which the width of embankment at subgrade is based it is considered that the track, in excavations, is placed upon what is virtually a low embankment; and in order to preserve uniformity of conditions immediately under the track throughout the line, the width of subgrade in excavations should be made the same as on embankments, outside of which sufficient room should be allowed for side ditches.
Page 31 - Unit stresses are for green timber and are to be used without increasing the live load stresses for impact. Values noted • are for partially air dry timbers.
Page 46 - The slopes of embankments and excavations shall be of the following inclinations, as expressed in the ratio of the horizontal distance to the vertical rise: Embankments, Earth...
Page 31 - Ties shall not be less than 10 ft. in length. They shall be spaced with not more than 6-in. openings; and shall be secured against bunching.
Page 458 - HP = indicated horse-power of engine, P = mean effective pressure on piston in pounds per square inch, L = length of piston stroke in feet, A = area of piston in square inches, N = number of strokes of piston per minute. Assume that P = 90, L = 2, A = 320, and N = 110; what would be the horse-power?
Page 106 - Axial compression on gross section of columns. . .16,000 — 70 — r with a maximum of 14,000 where "/" is the length of the member in inches, and "r" is the least radius of gyration in inches.
Page 44 - ... districts of a railway having a single main track with a traffic that equals or exceeds the following: Freight car mileage passing over district per year per mile, 150,000; or, Passenger car mileage per year per mile of district, 10,000; with maximum speed of passenger trains of 50 miles per hour. Class