Steam power plants, their design and construction . of Operation.—The engine is to run non-condensing at 200revolutions per minute. Steam pressure 125 lbs. above the pressure 15 lbs. absolute. The maximum load for which engine isintended equals 400 I. H. P. The engine is to operate at highest efficiencywith load equal 300 I. H. P. The average load will equal 175-200 I. H. P. Size of Cylinders.—The cylinders shall be approximately 18 inches and291/2 in. x 18 in. or I8V2 in. and 30 in. x 17 in. The volumes of cylinders furnished shall be not less than the volumesherein specified
Steam power plants, their design and construction . of Operation.—The engine is to run non-condensing at 200revolutions per minute. Steam pressure 125 lbs. above the pressure 15 lbs. absolute. The maximum load for which engine isintended equals 400 I. H. P. The engine is to operate at highest efficiencywith load equal 300 I. H. P. The average load will equal 175-200 I. H. P. Size of Cylinders.—The cylinders shall be approximately 18 inches and291/2 in. x 18 in. or I8V2 in. and 30 in. x 17 in. The volumes of cylinders furnished shall be not less than the volumesherein specified and the ratio of the cylinder volumes shall be and Speed Regulation.—The speed regulation shall be within per cent,above or below normal. Piston Speed.—The piston speed shall be not less than 560 feet perminute nor more than 600 feet. Clearance.—The clearance shall not exceed 8 per cent. Indicator Attachment.—Bra^s piping for indicator with three way valveis to be furnished for both high and low pressure oect on through Boiler Room, Longi + ud incil SectionPlate 8.—Power Plant, Massachusetts General Hospital, Boston, Mass. STEAM-POWER PLANTS. G9 Dimensions and Weights.—The Builder shall furnish the following datain regard to engine: Total weight of engine. Total weight of heaviest part. Total weight of fly wheel. Diameter and-length of main bearings. Diameter and length of cross-head pins. Diameter and length of crank pins. Diameter of main shaft in body. Diameter and face of fly wheel. Length of connecting rod. Blue Prints, Template, Specifications.—The Builder shall furnish blueprint of engine and foundations which shall form a part of these specifica-tions after acceptance of proposal. A foundation template and foundationbolts shall be furnished by the Builder. The foundation bolts to be pro-vided with washers at least 10 inches square and to be threaded for twonuts at top. The Builder shall also furnish spoclfication of the
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