Materials and Construction: A Theoretical and Practical Treatise on the Strains, Designing, and Erection of Works of ConstructionC. Lockwood and Company, 1881 - 249 páginas |
Dentro del libro
Resultados 1-5 de 75
Página 9
... MOMENTS CHAPTER III . - BENDING STRESS CHAPTER IV . - FRAMED STRUCTURES . OF FORCE- 12 18 56 CHAPTER V. - ADVENTITIOUS BRACING CHAPTER VI . - DEFLECTION AND DISTORTION 81 92 CHAPTER VII . - IRON ARCHES 97 CHAPTER VIII . - SUSPENSION ...
... MOMENTS CHAPTER III . - BENDING STRESS CHAPTER IV . - FRAMED STRUCTURES . OF FORCE- 12 18 56 CHAPTER V. - ADVENTITIOUS BRACING CHAPTER VI . - DEFLECTION AND DISTORTION 81 92 CHAPTER VII . - IRON ARCHES 97 CHAPTER VIII . - SUSPENSION ...
Página 12
... moment " of such force . Any form of simple lever exhibits two of these moments acting in opposition to each other , and by employing the method of calculating by moments all cases of forces acting about a centre may be dealt with . The ...
... moment " of such force . Any form of simple lever exhibits two of these moments acting in opposition to each other , and by employing the method of calculating by moments all cases of forces acting about a centre may be dealt with . The ...
Página 13
... moment may in value represent many different com- binations of force and leverage or distance , and before going further it may be best to show the relations of equal moments of force . A force at rest , or as it is technically called ...
... moment may in value represent many different com- binations of force and leverage or distance , and before going further it may be best to show the relations of equal moments of force . A force at rest , or as it is technically called ...
Página 14
... moment of W is Wx b c = 7 × 3 = 21 ft . tons ; but a c = 13 ft . , hence P 21 ft . tons 13 ft . 1.61 & c . tons ; for if Wxbc = Pxa c ... P = Wxbc ÷ a c . I will now consider the action of inclined forces con- jointly at a point . In ...
... moment of W is Wx b c = 7 × 3 = 21 ft . tons ; but a c = 13 ft . , hence P 21 ft . tons 13 ft . 1.61 & c . tons ; for if Wxbc = Pxa c ... P = Wxbc ÷ a c . I will now consider the action of inclined forces con- jointly at a point . In ...
Página 15
... moments of the forces P , P ' about the point a . 29.175 × 406 = 11845 , which is the moment of P " about the point a . The slight discrepancy is due to errors of measurement , and it will be observed that even on the very small scale ...
... moments of the forces P , P ' about the point a . 29.175 × 406 = 11845 , which is the moment of P " about the point a . The slight discrepancy is due to errors of measurement , and it will be observed that even on the very small scale ...
Otras ediciones - Ver todas
Términos y frases comunes
abutment acting angle irons angle of repose arch beam bolts bottom flange bracing bridge calculated carried cast iron centre of gravity cloth boards column complete the parallelogram compression cross girders crown cubic foot curve deflection depth determined diagonal diameter direction distance distributing girder Edition Engineer equal factor of safety feet force formula friction hence Illustrations inch thick inclined bar joint length lineal foot load main girder masonry material maximum strain modulus of elasticity molecules multiplied neutral axis numerous parallelogram of forces pier plates practical pressure radius ratio right angles rivet area rivet holes rivets road girder SCOTT BURN sectional area sectional square inch shearing shearing strain side span strength stress structure surface taken tensile tension timber tion top flange Treatise triangle voussoir weight wrought iron
Pasajes populares
Página 230 - Levelling. A TREATISE on the PRINCIPLES and PRACTICE of LEVELLING ; showing its Application to Purposes of Railway and Civil Engineering, in the Construction of Roads ; with Mr. TELFORD'S Rules for the same. By FREDERICK W. SIMMS, FGS, M. Inst. CE Sixth Edition, very carefully revised, with the addition of Mr.
Página 233 - AN OUTLINE OF THE METHOD OF CONDUCTING A TRIGONOMETRICAL SURVEY. For the Formation of Geographical and Topographical Maps and Plans, Military Reconnaissance, LEVELLING, &c., with Useful Problems, Formulae, and Tables.
Página 232 - From the technical knowledge of the author it will appeal to the railway man of to-day more forcibly than anything written by Dr. Smiles.
Página 17 - Woodcuts. 2s. 146. UTILIZATION OF SEWAGE, IRRIGATION, AND RECLAMATION OF WASTE LAND. (Vol. 5. OUTLINES OF MODERN FARMING.) By R.
Página 19 - OPTICAL INSTRUMENTS. Including (more especially) Telescopes, Microscopes, and Apparatus for producing copies of Maps and Plans by Photography. By JF HEATHER, MA Illustrated. is. 6d.
Página 18 - DESCRIPTIVE GEOMETRY, an Elementary Treatise on; with a Theory of Shadows and of Perspective, extracted from the French of G. MONGE. To which is added, a description of the Principles and Practice of Isometrical Projection ; the whole being intended as an introduction to the Application of Descriptive Geometry to various branches of the Arts.
Página 229 - FORMULAE for finding the Discharge of Water from Orifices, Notches, Weirs, Pipes, and Rivers. With New Formulae, Tables, and General Information on Rain-fall, Catchment-Basins, Drainage, Sewerage, Water Supply for Towns and Mill Power. By JOHN NEVILLE, Civil Engineer, MR,IA Third Edition, carefully revised, with considerable Additions. Numerous Illustrations. Cr. 8vo, 14^. cloth. "Undoubtedly an exceedingly useful and elaborate compilation.
Página 18 - A KEY to the above, containing Solutions in full to the Exercises, together with Comments, Explanations, and Improved Processes, for the Use of Teachers and Unassisted Learners. By JR YOUNG, is.
Página 246 - With a Slide Rule, in tuck of cover. Fifth Edition ..... . 2/6J 196. THEORY OF COMPOUND INTEREST AND ANNUITIES; with Tables of Logarithms for the more Difficult Computations of Interest, Discount, Annuities, &c., in all their Applications and Uses for Mercantile and State Purposes. By FKDOR THOMAN, of the Societe" Credit Mobilier, Paris. Third Kdition, carefully revised and corrected . . . 4/0* " A very powerful work, and the author has a very remarkable command of his subject.
Página 3 - Physical Geology," which sets forth the Leading Principles of the Science ; and " Historical Geology, " which treats of the Mineral and Organic Conditions of the Earth at each successive epoch, especial reference being made to the British Series of Rocks. By RALPH TATE. With more than 250 Illustrations. Fcap.