Certified copies of tests to be sent to the engineers; tests to be at expense of contractor. -), not less than standard thickness. -); stay rods. Tubes. To be made of (- Other Parts. To be made of material called for on drawing, and "to be the Workmanship Plates.-Arrangement of plates and seams to be as shown on drawing, plates Tubes to be set with a Fitting Tubes.-Holes to be chamfered on outside. Inspection and Test Access to the works of inspector to be afforded at any time during manufacture. tight under this pressure. -) pounds hydrostatic pressure, and must be made Test to be made in presence of an inspector of the -) Engineering Co., or (at the option of the engineers) a sworn statement of satisfactory performance of test to be furnished. Painting To be painted on outside one coat of mineral paint at shop. Finished surfaces to be covered with a rust-resisting compound. Packing and Shipping Flanges to have protectors bolted on. Steam-drum to be shipped separately; small pieces to be boxed and wired, boxes numbered and contents given in shipping list. Marking All pieces to be marked for shipment as per instructions in formal order. OUTLINE OF SPECIFICATION FOR A SELF-SUPPORTING STEEL SMOKE-STACK (Intended to accompany a drawing of a completely designed stack. For outline of design see p. 73. In case an outline drawing only is submitted with the specification, the items in the "General Description" should be as detailed as possible. Heading as per example, p. 92. Drawing No. -) "These specifications refer to the above drawing of the -) Engineer General Description Main dimensions; inside diameter, height, diameter at base-ring. Anchorage: bolts, anchor-girders, bridge-girder (over pedestal flue opening), Brichin connection(s); size, location and reinforcement, division diaphragm. Details: ladder, clean-out door, painting trolley, etc., angles on inside for Conditions of Bids Bids are requested for one (1) stack as follows: Prop. 1.-For material delivered complete f.o.b./f.a.s. (— Prop. 2.--For the stack erected complete at (- -) not later -) not later than Note. This contractor will not set the anchor bolts or girders. Material to be Supplied Loads All metal work necessary for complete construction of stack, including shell, base-plates, anchor bolts and beams, ladder, painters' trolley, platform, railing, lotus, clean-out door, lightning-conductor rivets for all field connections sufficient in 10 percent to 20 percent excess, and a liberal quantity of fitting up bolts. This contractor not to supply any guy-wire; reinforcing bars for concrete base, brichin, damper, nor any concrete or brick work. Wind-velocity in miles per hour to which stack may be exposed. Occurrence of, or liability to earthquake shocks. Proportion of Parts Maximum allowable strain on anchor-bolt and beams. Minimum thickness of metal for shell plates; thickness of metal for lotus. Quality of Material Shell: of (medium) steel plates, 55/65,000 U. T. S., full to gauge and free from flaws. Lotus: of galvanized steel, copper, etc. Lightning Conductor: of copper, etc. Anchor-bolts: of (medium) steel. Castings: of iron, clean and sound and free from holes, etc. Workmanship "To be first-class in every respect.” Specify any special requirements in punching, rolling of plates, etc. Painting One coat in shop with an (approved) paint (or oil). Marking. All plates, etc., to have marks corresponding to an erection drawing, also all parts to bear shipping marks as per instructions in formal order; marks to be made in such a manner as not to be obliterated in transit, steel stamping dies to be used in addition to paint marks; shipping and erection marks to be in different colored paints. Inspection By representative of Eng'rs; rejection of faulty material or material not properly marked. Boxing and Packing Knock down for (export) shipment. Small pieces to be boxed and wired, boxes numbered and contents given in shipping list. Drawings Furnished Shop drawings to be submitted for approval, contractor to be responsible for dimensions and details on working plans. Anchor-bolt drawings to be supplied within (—) days of date of order. Erection drawings to be supplied when material is shipped. Delivery of Anchor-bolts Anchor bolts and beams to be delivered f.o.b./f.a.s. (— not later than OUTLINE OF SPECIFICATION for a Medium-SPEED OR LARGE STEAM ENGINE (No accompanying drawings. For "inquiry reminders" for smaller engines, see p. 133.) Heading as per example p. 101. "Supply one (1) medium speed (or slow-speed) steam engine as per the following specifications of the (-) Engineering Co." Simple, compound or triple-expansion; tandem or cross compound; single or duplex cylinders; horizontal, vertical or combination frame; girder or rollingmill frame; R. or L. hand; to run "over" or "under"; centre or side crank. For direct or belted connection; if the latter, state whether the belt is forward or back of the cylinder, as in the latter case a longer (and larger) crank-shaft will be required so that flywheel may be set out far enough for belt to clear valve gear. If for direct-connected electric service, consult also "Outline of Specification for a High-speed Engine" on p. 111, for special features. Type of valve gear preferred, slide, balanced, piston, rotary, Corliss (single or double eccentric), etc.; reversing or non-reversing. Type of governor; speed control. Power and Main Dimensions Initial pressure, back pressure, vacuum; speed; I.H.P. to be developed at (given) cut-off; approximate size of cylinders desired. Size and weight of flywheel or band-wheel (diameter and face), special type of same, to be supplied in one piece, in halves or sections. Size of shaft (exact or approximate) at bearings, flywheel and at connection to pinions, etc; if direct-connected always send sketch. Conditions of Bids To be for lump sum, for material delivered f.o.b./f.a.s., erected, at ( not later than (—) weeks from date of order. Bids to be accompanied by an outline drawing, together with a detailed specification, giving principal dimensions, weight of flywheel, enumerating and describing all fittings, etc. Estimated shipping weight to be stated. Bids, drawings and specifications to be submitted in duplicate. Material to be. Supplied To consist of engine complete with flywheel, out-board bearing, governor, throttle valve, lubricating system for cylinders and bearings, oil-cups, water relief valves, drip and bleeder valves, piston and valve-rod packing, foundationbolts with nuts and plates, and a complete set of wrenches, spanners and eyebolts; the whole to be complete and ready for operation when assembled. Material not to be supplied by this contractor (enumerate fully). Details of Construction Special features or approximate dimensions desired for crank-pin, cross-head, piston-rod, tail-rod, steam and exhaust connections, throttle valve, governor. eccentrics, oil-cups, forced lubrication, sight-feed lubricators, cylinder-cocks, bleeders, water-relief valves, piston-rings, piston-rod packing, valve-gear, indicator piping. Quality of Material Specifications for cylinder and other C. I., crank-shaft forging, wrought-iron details, brass, bearing-metal. Workmanship "To be first-class in every respect;" details to allow quick adjustment and repairs without involving work on main material. Shop-erection and Inspection Inspection at any time, by representative of engineers. Engine to be erected in the shop; proper dowels to be provided; pieces to be match-marked; faulty material to be rejected. Painting Usual or special manner; greasing of bright surfaces. Marking All pieces to be marked as per directions of formal order; erection marks. Boxing and Packing If for export or any special carriage; small pieces to be boxed and wired; boxes numbered and contents given in shipping list. Drawings to be Furnished General dimension, anchor-bolt, erection and detail drawings required. Shipment of Anchor-bolts To be shipped within (--) days of date of order. Erector to be Supplied Rate per day; payment of traveling and other expenses. Acceptance Test Required I.H.P. or B.H.P. to be developed; reliability run; steam-economy requirement; consequent terms of payment (bonus and penalty) as per con tract. Alternate Bids As required by engineers; or as contractor may desire. OUTLINE OF SPECIFICATION FOR A HIGH-SPEED STEAM ENGINE (No accompanying drawings.) Heading as per example p. 101. “Supply one (1) high-speed steam engine as per the following specifications Description and Service Horizontal or vertical; centre or side crank; R. or L. hand; simple or compound; tandem or cross-compound; automatic cut-off; to run "under" or "over;" with or without sub-base; steam-pressure, back-pressure, vacuum. (If for Belted Connection to Generator.)-For direct or alternating current; K.W. capacity of generator (if for A.C. give K.V.A. and power factor); speed of generator, type and service, and approximate size (diameter and face) of pulley on same; approximate size of engine band-wheel and speed (generator pulley will finally be fixed from same); product of area of piston in inches, length of stroke in inches and R.P.M., not to be less than a (given) coefficient; flywheel. (If for Direct Connection to Generator.)—For direct or alternating current; K.W. capacity of generator (if for A.C. give K.V.A. and power factor); R.P.M. of generator; type of generator; service. Extended base, shaft and out-board bearing to be of A.S.M.E. Standard dimensions; on (given) M.E.P. and speed, product of area of piston in inches and length of stroke in inches not to be less than (given) coefficient; if (A.C.) generator is to run in synchronism with another machine, an extra heavy flywheel to be provided, describe other machine; out-board end of shaft to be extended to take exciter pulley. Conditions of Bids To be for a lump sum, for material delivered f.o.b./f.a.s., erected at (- Outline drawing and detailed description to be furnished. Estimated shipping weight to be stated. Bids, drawings and specifications to be submitted in duplicate. Material to be Supplied (If for Belted Connection.)-To consist of engine complete with flywheel (s), (and see below). (If for Direct Connection.)-To consist of engine complete with governorwheel, extended base to take generator frame, sub-base, extended shaft to take generator armature, outboard pedestal and bearing, eye-bolts and push-off bolts, exciter-pulley (and see below). (For Either).-Throttle-valve, lubricating systems for cylinders and bearings, sight-feed cylinder lubricator, grease cups, water-relief valves, drip and bleeder valves, anchor-bolt templet, piston and valve-rod packing, foundationbolts with nuts and plates, and a complete set of wrenches, spanners and eye-bolts; the whole to be complete and ready for operation when assembled. Material not to be supplied by this contractor (enumerate fully). Cooperation with Electrical Contractor To cooperate in regard to generator shaft fitting by immediate forwardal to E.C. of detail drawings and template of shaft to enable E.C. to design and manufacture his material to suit, and to preclude any delay in delivery of either generator or engine. |