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 20
... girder , when that point is referred to in relation to the tensile or compressive stresses on the area of which it is centre of gravity . The weights or loads producing strain are generally of geometrical form , having a centre of ...
... girder , when that point is referred to in relation to the tensile or compressive stresses on the area of which it is centre of gravity . The weights or loads producing strain are generally of geometrical form , having a centre of ...
Página 26
... girder being known as the flanges . Taking the working strain at 4 tons per square inch , the sum of the moments of resistance of both the flanges will be- 2 × 19.165 × 4 × 20 · 5-3143.06 inch tons . This has to be compared with the ...
... girder being known as the flanges . Taking the working strain at 4 tons per square inch , the sum of the moments of resistance of both the flanges will be- 2 × 19.165 × 4 × 20 · 5-3143.06 inch tons . This has to be compared with the ...
Página 27
... girder , and the flanges are not of equal area , they will adjust the internal strains so as to produce equal moments of strain about the neutral axis , which will be at some intermediate point depending on the ratios of the area . For ...
... girder , and the flanges are not of equal area , they will adjust the internal strains so as to produce equal moments of strain about the neutral axis , which will be at some intermediate point depending on the ratios of the area . For ...
Página 28
... girder . In the case taken the area are as 3 to 1 ; hence the strains per sectional square inch will be in this ratio , and this will also be the ratio of the distances of the centres of gravity of the two flanges from the neutral axis ...
... girder . In the case taken the area are as 3 to 1 ; hence the strains per sectional square inch will be in this ratio , and this will also be the ratio of the distances of the centres of gravity of the two flanges from the neutral axis ...
Página 29
... girder , d being measured between the centres of gravity of those flanges , and A = area in square inches of smaller flange , Ms. A. d . Having investigated the nature and action of A the internal resistances of the material , that of ...
... girder , d being measured between the centres of gravity of those flanges , and A = area in square inches of smaller flange , Ms. A. d . Having investigated the nature and action of A the internal resistances of the material , that of ...
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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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