rail to lowest point of roof-truss); knee-brace (send sketch); end (end of building to centre of hook); under (distance to lowest point of crane-girder; any line-shaft, flywheels, locomotives, etc., to clear?); cage (centre-line of rail to inside face of cage, and under clearance). Horizontal travel of hook; distance from centre of rail to centre line of hook when at extreme positions, for each side. Runway Rail Section. Length of runway. Service, or class of work. Motors and Speeds Current available; if Direct, give voltage (of constant-potential circuit); if Alternating, give number of phases, frequency and voltage. Type of Motors desired. Hoist Motor(s); speed at which full load (main and auxiliary) is to be lifted. Bridge Traverse Motor; speed of crane on runway with full load. Cage; locate in plan on sketch. Wires; if in place, locate on sketch. Outdoor Service; state if required, so that covering may be provided for trolley, cage, etc. Preferences as to chain or wire for hoist; type of controllers. Strength Bridge; maximum allowable tensile and compressive stresses for flanges, Factor of Safety; least for any part. STEAM LOCOMOTIVE The following schedule covers the data that should be submitted to the manufacturers when calling for bids or placing an order. In the event that the type of engine, size of cylinders, steam pressure, etc., are already determined, the items referring to Traffic Conditions may be omitted; or vice versa the Principal Dimension items may be omitted and the Traffic Conditions be given: if there is any doubt as to the size required, both headings may be filled out and the proper caution added. Track Conditions (1) Gauge of track (i.e., space inside of rail heads). (2) Weight of rail per yard. (3) Maximum clearance vertically (height above top of rail). (4) Maximum clearance laterally (allowable width). (5) Submit a "Clearance diagram" if possible (see Figs. 109 to 113). (6) Length of road. (7) Maximum grade, and length of same. (8) Maximum curvature. (9) Does grade occur on a curve? (10) If so, is grade compensated for curvature? Traffic Conditions (11) Kind of traffic. (12) No. of coaches and weight in average train in tons of 2,240/2,000 lb. (13) Ditto for heaviest train. (14) Is heaviest train to operate on heaviest grade? (15) Will train have to start on a grade? (16) State number of speeds desired. State combination of speeds desired? (17) For which loading is the engine to be especially designed? Fuel and Water (18) Kind of fuel: anthracite or bituminous coal, coke, lignite, wood (give kind), oil (describe fully), etc. (19) Kind of water; is water badly scale-producing, so that extra hand-holes, etc., must be provided? Principal Dimensions (Note. These items should not be filled in unless absolutely known or decided upon.) (20) Diameter and stroke of cylinders (H.P. and L.P.) (21) Class of engine required (see System in Fig. 244). (22) Boiler Steam Pressure. (23) Diameter of Driving Wheels. (24) Heating Surface of Boiler. (25) Grate Area. (26) Water Storage Capacity. (27) Fuel Storage Capacity. Draft Gear (Note. It is imperatively necessary that this information be submitted (28) Style of drawbars, drawhooks or couplers (send sketch if possible). (31) If buffers are located at sides, state distance apart centre to centre. (33) Style of couplers. Details of Construction (34) Firebox to be of steel or copper? (35) Tubes of charcoal iron, seamless-drawn steel, copper or brass? (36) Grate; state any special requirement. (37) Smoke Stack; straight, diamond or special? (38) Valves and Valve Motion; state any special requirements. (39) Cab; state any special requirements. (40) Pilot; "Cowcatcher" or step? Is either required on rear end? (41) Headlight; One or two? Oil, acetylene or electric? (42) Engine Brakes; steam or air? Finish (43) State any special coloring or finish desired. (44) Name(s) and Number(s); where placed, style desired. Special (45) Train Brakes: required or not? Westinghouse or other type? (46) Are screw-threads to be other than U. S. standard? RAILROAD AND INDUSTRIAL CARS (1) Gauge of track (distance inside of rail heads). (2) Weight of rail on which cars run. (3) Radius and length of sharpest curve. (4) Style of car required: four-wheel platform car, flat car, gondola, box, sugar cane, logging, tank, dump or special; describe as fully as possible, sending sketch. (5) Material to be handled and its weight per cubic foot. (6) Capacity of each car, in tons of material, or cubic feet, or number of pieces, etc. (7) If possible, give main dimensions, such as length inside or over end sills, width inside or over side sills, height of body or of stakes above floor, distance from top of rail to floor. (8) Are there any limitations (due to tunnels, yard clearances, etc.) as to height, width or length? Send sketch. (9) Style of coupling or drawbar; automatic, link and pin, etc. When placing order with a firm who has not the information, a detail drawing must always be sent. (10) Give distance from top of rail to centre of coupling. (11) Are cars to be operated by hand, animals, steam or electricity? (12) Are cars to be operated singly or in trains? If the latter, state number of cars to a train. (13) Give dimensions of wheels and axles already in use (as per sketch on p. 187) if new cars are to be used with old ones. (14) Style of axle boxes, if inside or outside, roller bearings, etc., if with or without springs. (15) Are there any other points to be considered? If so, please state and make any further remarks in regard to cars. (16) What kind and color of paint is to be used to paint cars? Give numbers and lettering required. (1) Gauge of track? LOCOMOTIVE CRANE (2) Class of work that crane will be engaged on? Special requirements? (3) State the maximum load to be carried and swung without out-riggers and at what maximum radius. (4) State the maximum radius to be reached and the corresponding load when the outriggers are placed. (5) Are heavier loads to be carried at shorter radii? Give particulars. (6) At what minimum radius are loads to be placed? (7) At what speeds is the crane to operate? Describe the operation. (8) What is the radius of the shortest curve over which the crane will operate? (9) Are there any special clearance requirements in the yard, at sides or overhead? (10) What kind of coal will be used? (11) Will crane be used to switch cars? How many cars and at what speed? (12) Style of coupler to be fitted? Height to centre-line? (13) Is an air brake to be fitted? (For coupling to a freight train for hauling over road). (14) Is crane to be fully housed? (15) Is a (Clam Shell) bucket to be supplied? (16) How is crane to be shipped? HOISTING ENGINE FOR HAULAGE, ETC. Note. For outline of ordering requirements for ordinary hoisting engines, see p. 179. (1) Service. State whether for hauling cars on inclines, for shafts, cableways, coaling-towers, etc.; how many ropes are to be operated and in what manner, material hoisted, etc. (2) Capacity. State either, (1) the load to be raised, the speed, the slope of the incline, and the character of the cars and the track so that a calculation can be made as to the power required, or, (2) the pull on each line and the speed required. Also state the diameter and length of rope to be wound on each drum; material of the rope; number and diameter of sheaves the rope runs over between the load and the drum and the arrangement of same. (3) Style.-State whether a single or a double drum is required, and whether the latter are to be entirely independent or operated by a central gear with brake control. Reversible or non-reversible? (4) Power. Steam or Electric? For Steam Power state steam pressure available at the throttle, and whether there is any vacuum or back pressure and how much? For Electric Power state whether current is direct or alternating: if the former give the voltage, and if the latter give the voltage, phase and frequency. (5) Number of Units Required? (6) Material to be Supplied. State which of the following items are to be supplied and which are not to be supplied: Steam Power; hoist complete with all necessary oil cups, wrenches, sight-feed lubricator, drain-cocks, steam connections to and including throttle-valve, anchor bolts, and indicator (for showing location of car). Also state whether a boiler is required, and whether it is to be attached to hoist or mounted separately. Electric Power; hoist complete with all necessary oil cups, wrenches, anchor bolts, indicator (for showing location of car), motor, controller, and solenoid (electric) brake. (7) Spares. State whether any spare parts are to be supplied (enumerate, or call for recommended list). (8) Shipping. State whether there are any limitations on weights of pieces as affected by shipping facilities. FOUNDRY CUPOLA (1) Number of Units Required (2) State class of work to be used on, whether (a) General foundry work (machine, architectural or jobbing). (b) Light work (stove, agricultural, radiator, malleable, etc.). (c) Heavy work (pipe, car wheels, ingot molds and heavy machinery). (d) Bessemer work (steel plants, steel casting plants, etc.). (e) Testing (small heats, experimental work, etc.). (f) Bedstead (continuous melting). (g) Portable (cast-iron rail joints, etc.). (3) Size or Capacity The "size" of a cupola is the diameter of the steel stack (distance "D" in the sketch). The "capacity" is given as the weight of iron that can be melted in 1 hour, a very variable quantity. State either the size or capacity desired. (4) Principal dimensions Give the following distances: Total height of stack from foundation (F). Height of Legs (H) if maker's standard is not acceptable. (Note.-Doors must have room to swing clear.) Height of Charging Door (E). Length of Tap Spout (J) and, of Slag Spout (K) if maker's standard is not acceptable. (5) General Arrangement (a) Is charging door to be placed over slag spout (usual arrangement) or otherwise? (b) Locate on a plan view, similar to sketch, the desired position of blast nozzle. (c) If roof hood is required give roof slope as shown. (6) Material to be Supplied (b) All the above and also part (c) The cupola complete, i.e., (d) Spark Arrester. (e) Roof Hood (give roof slope). and Stairway to same (needed (g) Blast Gauge. (h) Brick lining (see p. 205). (k) Blast Pipe and Fittings. (7) Material not to be supplied. Enumerate such of the above as are not to be supplied. Far side Operators Platform SCALES Warehouse Scales (1) Portable or Fixed? (2) Size of Platform? (Bidder to quote on nearest standard size.) |