The Theory of Strains in Girders and Similar StructuresBoD – Books on Demand, 19.08.2023 - 652 Seiten Reprint of the original, first published in 1873. |
Inhalt
ᎪᎬᎢ | 1 |
Hookes lawLaw of elasticityLimit of elasticity | 7 |
FLANGED SEMIGIRDER LOADED AT THE EXTREMITY | 13 |
WebShearingstrain | 19 |
Single fixed load flangearea of girder of uniform strength when the depth | 25 |
Flangearea of girder of uniform strength when the depth is constant | 36 |
Flanges | 41 |
Depth and length for calculation | 42 |
Crushing strength of copper brass tin lead aluminium bronze zinc | 235 |
Crushing strength of glass | 243 |
100 | 244 |
are as the squares of their lengths | 247 |
length | 256 |
A slight inequality in the thickness of hollow castiron pillars does | 257 |
Flanges | 267 |
TIMBER PILLARS | 269 |
Strength of stones even of the same kind is very variable | 51 |
SEMIGIRDERS LOADED AT THE EXTREMITY | 62 |
Hollow elliptic semigirders | 68 |
Elevation of solid rectangular semigirder of uniform strength breadth | 75 |
Plan of solid rectangular girder of uniform strength depth constant | 79 |
384 | 85 |
Transverse strength of thick castings much less than that of thin castings | 86 |
Brace | 88 |
ART PAGE 161 Flangestrains derived from a diagram | 100 |
Web second method | 101 |
Increments of strain in flanges | 102 |
Strains in flanges calculated by moments | 103 |
Strains in intersecting diagonalsGeneral law of strains in intersecting diagonals of isosceles bracing with parallel flanges | 104 |
Maximum strains in webStrains in intersecting diagonals | 105 |
Permanent loadAbsolute maximum strains | 106 |
Flanges | 107 |
Counterbracing | 108 |
Approximate rule for strains in lattice web | 111 |
WebFlanges | 112 |
LATTICE GIRDERS SUPPORTED AT BOTH ENDS AND TRAVERSED BY A TRAIN OF UNIFORM DENSITY 179 Web first method | 113 |
End pillars | 114 |
Ambiguity respecting strains in lattice bracing | 116 |
Flangestrains calculated by moments | 117 |
Web second method | 118 |
CHAPTER VI | 122 |
Apex | 123 |
CASE ILGIRDERS SUPPORTED AT BOTH ENDS AND LOADED UNIFORMLY | 124 |
Wharf crane | 132 |
72 | 133 |
Bay | 136 |
Lattice semiarchTriangular semigirder | 139 |
Example 2Flangestrains nearly uniform with symmetric loading | 142 |
Web | 145 |
Inverted bowstring or fishbellied girderBow and invert or double bow | 149 |
Resultant strains in flanges | 151 |
Flanges | 157 |
CHAPTER VIII | 164 |
Deflection of a semigirder loaded uniformly equals threeeighths of | 174 |
CHAPTER IX | 181 |
Web length containing a halfbay | 202 |
Lattice girder traversed by a single load | 203 |
Web the length containing an even number of bays | 204 |
Isosceles more economical than vertical and diagonal bracing | 210 |
Web first method | 215 |
Solid round shafts | 217 |
CHAPTER XIV | 224 |
889 | 273 |
Each bay of a braced pillar resembles a pillar with rounded endsCom | 286 |
Hollow cylindersElliptic tubes | 288 |
WBOUGHTIRON | 296 |
Tensile strength of wroughtiron mean results | 303 |
IRON WIRE | 309 |
Steel plates often deficient in uniformity and toughnessPunching | 316 |
Lateral adhesion of the fibres | 324 |
Tensile strength of Roman cementNatural cements generally inferior | 330 |
Strength and weight of cordageEnglish ruleFrench rule | 340 |
Tensile strength | 345 |
Long openlink chainAdmiralty proofstrainTrinity proofstrain | 346 |
Tensile strength of flat iron and steel wire ropes and flat hemp rope | 353 |
Shearing strength of wroughtiron equals its tensile strength | 360 |
CASTIRON | 365 |
Increment of length and set of castiron extended a second timeRelaxa | 371 |
Elastic flexibility of castiron twice that of wroughtironLaw of elasticity | 379 |
A change of temperature of 15 C in castiron and 75 C in wroughtiron | 390 |
Punching and drilling tools | 396 |
Shearing strength of fir in the direction of the grainShearing strength | 397 |
CHAPTER XXII | 411 |
Weight of single and double linesWeight of snow | 417 |
CHAPTER XXIV | 424 |
Effect of centrifugal force | 433 |
CHAPTER XXVII | 442 |
CoversSingle and double covers comparedLapjoint | 449 |
Girdermakers Boilermakers and Shipbuilders rules for rivetingChain | 455 |
Adhesion of nails and wood screws | 462 |
Effects of longcontinued impact and frequent deflections on castiron bars | 472 |
Gross area available for compressionCompressive working strain | 484 |
Working load on foundations of earth clay gravel and rock | 487 |
Strength and quality of materials should be stated in specificationsProof | 491 |
WORKING LOAD ON RAILWAYS | 503 |
Standard working loads for railway bridges of various spans | 510 |
Weight of roofing materials and working loads on roofsWeight of snow | 517 |
Weights of similar girders under 200 feet span vary nearly as the squares | 522 |
CHAPTER XXIX | 525 |
EXAMPLE 8 | 544 |
Error in assuming the permanent load uniformly distributed in large girders | 550 |
CHAPTER XXX | 558 |
Iron and timber combined form a cheap girderTimber should be used | 564 |
Working strains and area of flanges | 571 |
Experiments on the strength of braced pillars | 577 |
Chepstow Bridge Gigantic Truss | 583 |
Brotherton Plate Tubular Bridge | 591 |
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Häufige Begriffe und Wortgruppen
angle apex apices Blaenavon Boyne Viaduct breadth breaking weight calculated cast cast-iron pillar coefficient of elasticity cross section crushing strength Crushing weight cylinder depth Ditto ends equal equation experiments feet long fibres flexure formulæ fracture Gault clay Hence Hodgkinson's increments intersecting isosceles lattice girder left abutment loaded uniformly long pillars Low Moor lower flange maximum strains metal method of moments neutral axis number of bays obtained passing load permanent load plates points of inflexion Portland cement pressure proportion quantity of material R₁ ratio of length reaction represent resistance Rolled bars sectional area segment semi-girder shearing-strain side solid rectangular solid round specimen square inch steel strains produced Strength of Materials struts Taking moments round Tearing weight tensile strain tensile strength tension thickness timber tons per square transverse strain triangles truss tube Tubular Bridges unit-strain upper flange vertical W₁ weight per square wrought-iron