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abutment act by tension acting by thrust amount of action arch truss assumed beam bearing bolts cast iron centre cloth compression connecting block connecting pin construction counter-bracing cross-section curve deflection depth of truss diagram diameter distance Draw Bridges end braces feet figures flanges force full load gives gonals greater half Hence hole horizontal action horizontal reach horizontal thrust inclination joists king braces latter less liable lifting force lower chord maximum stress maximum weight movable load multiplied negative resistance nodes number of panels oblique members panel truss pieces portion posts practice pressure produced proportion rail road ratio represented respectively rivets side single track rail span splice plates square inch strain tension material thickness thrust members tical timber tion Trapezoidal Truss Bridge truss Fig upper chord uprights vertical reach weight acting weight of structure weight sustained whence whole width wrought iron
Page 354 - 4to vol., cloth 10 00 Half morocco 15 00 BURT, WA—Key to the Solar Compass, and Surveyor's Companion. Comprising all the rules necessary for use in the field ; also description of the Linear Surveys and Public Land System of the United States, Notes on the
Page 355 - Mississippi River at Quincy, Illinois. Illustrated with 21 lithographed plans. 4to, cloth 7 50 CLEVENGER, SR—A Treatise on the Method of Government Surveying, As prescribed by the US Congress and Commissioner of the General Land Office, with complete Mathematical, Astronomical, and Practical Instructions for the use of the United States Surveyors in the field. 16mo. morocco 2 50 COFFIN, Prof.
Page 351 - Official Reports and other Documents. Compiled by Capt. Richard S. Collum. 8vo, cloth 250 ALEXANDER, JH—Universal Dictionary of Weights and Measures, Ancient and Modern, reduced to the Standards of the United States of America. New edition, enlarged. 8vo, cloth 3 50 ANDERSON, Gen. ROBERT.—Evolutions of Field Batteries of Artillery. Translated from the French, and arranged for the Army and Militia of the United
Page 351 - 23 Murray Street and 27 Warren Street, New York. ABBOT, Maj. HENRY L.—Siege Artillery against Richmond. Illustrated. 8vo, cloth $3 50 ADAMS, JW—Sewers and Drains for Populous Districts. Embracing Rules and Formulas for the dimensions and construction of / works of Sanitary Engineers. Second edition. 8vo, cloth 2 50
Page 354 - cloth extra 1 75 CALDWELL, Prof. GEO. C., and BRENEMAN, Prof. AA-Manual of Introductory Chemical Practice. For the use of Students in Colleges and Normal and High Schools. Third edition revised and corrected. 8vo, cloth, illustrated. New and enlarged edition 1 50 CAMPIN, FRA.NCIS.—On the Construction of Iron Roofs.
Page 353 - BLAKE, WP—Eeport upon the Precious Metals ; Being Statistical Notices of the principal Gold and Silver producing regions of the World, represented at the Paris Universal Exposition. 8vo, cloth 2 00 Ceramic Art. A
Page 354 - 259 practical wood-cut illustrations, and 403 pages of descriptive matter, the whole being an exposition of the present practice of James Watt & Co., J. & G. Rennie, R. Napier &