Skeleton Structures: Especially in Their Application to the Building of Steel & Iron BridgesVan Nostrand, 1867 - 96 páginas |
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Página 19
... serves us as measure for this strain . In this action , however , the strain in the rod is directly op- posed to the tensile force , and tends to stop the prolongation . This action takes place as soon as we SKELETON STRUCTURES . 19.
... serves us as measure for this strain . In this action , however , the strain in the rod is directly op- posed to the tensile force , and tends to stop the prolongation . This action takes place as soon as we SKELETON STRUCTURES . 19.
Página 20
... prolongation of of the original length ; for iron these figures are 8.3 tons strain , and pro- longation . Does the force exceed this limit , the rod will be liable to a permanent prolongation , and this force will destroy a steel bar ...
... prolongation of of the original length ; for iron these figures are 8.3 tons strain , and pro- longation . Does the force exceed this limit , the rod will be liable to a permanent prolongation , and this force will destroy a steel bar ...
Página 21
... prolongation of a rod increases pro- portionally to the tensile force and to its length , and decreases proportionally to its sectional area . Thus , if a load of 5 tons causes in a rod of 1 in . section and 1 foot length a prolongation ...
... prolongation of a rod increases pro- portionally to the tensile force and to its length , and decreases proportionally to its sectional area . Thus , if a load of 5 tons causes in a rod of 1 in . section and 1 foot length a prolongation ...
Página 22
... prolongation and short- ening , are contrary to each other , we will use the same symbols , but with reverse signs . Therefore P is a compressive force , - 8 the corresponding pressure within the rod , and P the shortening . -- - We ...
... prolongation and short- ening , are contrary to each other , we will use the same symbols , but with reverse signs . Therefore P is a compressive force , - 8 the corresponding pressure within the rod , and P the shortening . -- - We ...
Página 23
... prolongation , we can calculate the strain , which will be tension if Р tive , and compression if p is negative . By the aid of these formulæ ( 2 ) and ( 3 ) , we are able to solve a number of problems , as I shall show when I have ...
... prolongation , we can calculate the strain , which will be tension if Р tive , and compression if p is negative . By the aid of these formulæ ( 2 ) and ( 3 ) , we are able to solve a number of problems , as I shall show when I have ...
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Términos y frases comunes
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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