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 25
... half the depth , leaves 19.165 inches for the distance of the centre of gravity of the area ab from the neutral axis . This area is called the с area of the flange , the top and bottom elements MOMENT OF RESISTANCE . 25.
... half the depth , leaves 19.165 inches for the distance of the centre of gravity of the area ab from the neutral axis . This area is called the с area of the flange , the top and bottom elements MOMENT OF RESISTANCE . 25.
Página 33
... half the Tess this distr + c , or c 1 . is the distant which the weight W acts about int m . ing the forms wring downwards plus or positive and those wing upwards minus or negative , the ssion for the moment about becomes- W / We We W ...
... half the Tess this distr + c , or c 1 . is the distant which the weight W acts about int m . ing the forms wring downwards plus or positive and those wing upwards minus or negative , the ssion for the moment about becomes- W / We We W ...
Página 33
... half on each support ; hence the W downward pressure on one support is and as the reaction 2 ' must be the same , the upward pressure of the support is W 2 • . The moment of strain , then , at any point distant x from the nearest ...
... half on each support ; hence the W downward pressure on one support is and as the reaction 2 ' must be the same , the upward pressure of the support is W 2 • . The moment of strain , then , at any point distant x from the nearest ...
Página 33
... half the 1 , length less this distance , or 32 − ( 1 − x ) = −2 + x , + x , or X- 2 which is the distance at which the weight W acts about the point m . Calling the forces acting downwards plus or positive forces , and those acting ...
... half the 1 , length less this distance , or 32 − ( 1 − x ) = −2 + x , + x , or X- 2 which is the distance at which the weight W acts about the point m . Calling the forces acting downwards plus or positive forces , and those acting ...
Página 39
... that the maximum moment of strain due to a A R e α d Fig . 19 . B 3 uniformly distributed load is one - half of that due to the same load concentrated at the centre of the span . A B , Fig . 19 , represents a girder TRIANGULAR LOADS . 39.
... that the maximum moment of strain due to a A R e α d Fig . 19 . B 3 uniformly distributed load is one - half of that due to the same load concentrated at the centre of the span . A B , Fig . 19 , represents a girder TRIANGULAR LOADS . 39.
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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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