Materials and Construction: A Theoretical and Practical Treatise on the Strains, Designing, and Erection of Works of ConstructionC. Lockwood and Company, 1881 - 249 páginas |
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Página 6
... axis . This illustrates the internal resistances of a beam to bending as a number of pushing and pulling efforts acting along the two arms of a lever , those of opposite kinds being on opposite sides of the fulcrum . The intensities of ...
... axis . This illustrates the internal resistances of a beam to bending as a number of pushing and pulling efforts acting along the two arms of a lever , those of opposite kinds being on opposite sides of the fulcrum . The intensities of ...
Página 19
... axis , its centre of gravity is somewhere in such axis , and if there be two axes of symmetry the centre of gravity will be at their intersection . The centre of gravity of an area such as fg kj may be determined by finding the sum of ...
... axis , its centre of gravity is somewhere in such axis , and if there be two axes of symmetry the centre of gravity will be at their intersection . The centre of gravity of an area such as fg kj may be determined by finding the sum of ...
Página 20
... axis selected about which to determine the moments be the boundary fg . The centre of gravity of each symmetrical element being its physical centre . Then the moment of the part- fgik areax distance from axis = ( 15X2 ) x1 = 30.00 ...
... axis selected about which to determine the moments be the boundary fg . The centre of gravity of each symmetrical element being its physical centre . Then the moment of the part- fgik areax distance from axis = ( 15X2 ) x1 = 30.00 ...
Página 21
... axis because it is unaffected by the external forces bear- ing upon the beam , and comprises an indefinitely thin layer of material run- ning through the beam longitudinally , and at right angles to the plane in which the beam is curved ...
... axis because it is unaffected by the external forces bear- ing upon the beam , and comprises an indefinitely thin layer of material run- ning through the beam longitudinally , and at right angles to the plane in which the beam is curved ...
Página 22
... axis , mm ' × E : n n ' XE ::: n n m m where E = modulus of elasticity . m m ' The value of is determined arbitrarily , or rather , I m m should say , its maximum value is limited by the factor of strain permitted to be used . If we ...
... axis , mm ' × E : n n ' XE ::: n n m m where E = modulus of elasticity . m m ' The value of is determined arbitrarily , or rather , I m m should say , its maximum value is limited by the factor of strain permitted to be used . If we ...
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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
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