Skeleton Structures: Especially in Their Application to the Building of Steel & Iron BridgesVan Nostrand, 1867 - 96 páginas |
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Página 18
... load . The wearing out is certainly very small indeed , as long as the bolts fit exactly . To reduce , therefore , this friction to a mini- mum , we need only harden the bolts , as well as the surface of the holes . By this hardening ...
... load . The wearing out is certainly very small indeed , as long as the bolts fit exactly . To reduce , therefore , this friction to a mini- mum , we need only harden the bolts , as well as the surface of the holes . By this hardening ...
Página 20
... a bar at the highest admissible strain is , in proportion to its original length , very small . If , for instance , a load of 12 tons per in . 0.0009 ; is applied to steel , its prolongation will 20 SKELETON STRUCTURES .
... a bar at the highest admissible strain is , in proportion to its original length , very small . If , for instance , a load of 12 tons per in . 0.0009 ; is applied to steel , its prolongation will 20 SKELETON STRUCTURES .
Página 21
... load of 5 tons causes in a rod of 1 in . section and 1 foot length a prolongation p , a load of 10 tons will cause in the same rod a prolongation 2 p . The same will take place when a load of 5 tons is applied to a rod of 1 in . section ...
... load of 5 tons causes in a rod of 1 in . section and 1 foot length a prolongation p , a load of 10 tons will cause in the same rod a prolongation 2 p . The same will take place when a load of 5 tons is applied to a rod of 1 in . section ...
Página 23
... load which rests on the bolt . The strains in the bars assume therefore such values , that the resulting force at each connection - point will disappear . Should this not be the case , the resulting force will move the bolt in its ...
... load which rests on the bolt . The strains in the bars assume therefore such values , that the resulting force at each connection - point will disappear . Should this not be the case , the resulting force will move the bolt in its ...
Página 24
... load will cause the girder to deflect , and therefore all the connection - points become displaced . These displacings expand and contract the different bars , and cause such strains as mutually preserve equilibrium . To deter- mine ...
... load will cause the girder to deflect , and therefore all the connection - points become displaced . These displacings expand and contract the different bars , and cause such strains as mutually preserve equilibrium . To deter- mine ...
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75 cents admissible strain Artillery ascertain beam bolt Britannia Bridge calculation Captain carry Cavalry compression connection-points construction Corps of Engineers dead weight deflection determined diagonal displacings engravings equal equations exactly example experiments exposed feet span firstly fixed formula GILLMORE gives greatest GUNNERY heat Hypsometry Illustrated increase Infantry instruction introducing iron length limit of elasticity load per running Major-General Manual Maps material Merrimack River Military Academy modulus of elasticity Naval octavo Officers OLAUS HENRICI Ordnance parallelogram of forces plates Practical pressure prolongation proportion q tons REBELLION Rifle rigidity roadway running foot single line Skeleton Bridge skeleton girder Skeleton Structures Steam steel strains caused superfluous bars suspended bridges tables TACTICS temperature tensile force tension tion tons per inch tons per running Treatise trussed bridges U. S. Army U. S. Navy United v₁ Volunteers West Point whilst whole
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