Knowledge (XXG)

Span (engineering)

Source 📝

685: 172: 36: 194: 459: 338: 277: 563:
The maximum bending moment and deflection occur midway between the two supports. From this it follows that if the span is doubled, the maximum moment (and with it the
244: 554: 529: 507: 485: 346: 722: 46: 587: 582: 663: 632: 751: 746: 104: 715: 76: 61: 741: 83: 761: 756: 90: 708: 285: 210: 72: 557: 178:
A span can be closed by a solid beam or by a rope. The first kind is used for bridges, the second one for
532: 205:
Span is a significant factor in finding the strength and size of a beam as it determines the maximum
249: 145: 141: 659: 653: 628: 149: 97: 692: 216: 198: 153: 183: 161: 156:). Span is measured in the horizontal direction either between the faces of the supports ( 564: 539: 514: 492: 470: 206: 187: 126: 735: 621: 576: 454:{\displaystyle \delta _{max}={\frac {5M_{max}L^{2}}{48EI}}={\frac {5qL^{4}}{384EI}}} 133: 35: 684: 171: 179: 53: 17: 579:— longest spans of ropes used as power lines, antennas or aerial tramways. 567:) will quadruple, and deflection will increase by a factor of sixteen. 193: 192: 170: 29: 201:
beam (top) bending under an evenly distributed load (bottom).
125:"Clear span" redirects here. For type of steel building, see 696: 57: 542: 517: 495: 473: 349: 288: 252: 219: 627:(Eighth ed.). Cengage Learning. p. 1086. 620: 548: 523: 501: 479: 453: 332: 271: 238: 27:Distance between supports of an arch, bridge, etc. 182:, overhead telecommunication lines, some type of 509:= Length of the beam between two supports (span) 716: 8: 62:introducing citations to additional sources 333:{\displaystyle M_{max}={\frac {qL^{2}}{8}}} 723: 709: 619:Gere, James M.; Goodno, Barry J. (2001). 541: 516: 494: 472: 431: 418: 395: 379: 369: 354: 348: 318: 308: 293: 287: 257: 251: 224: 218: 52:Relevant discussion may be found on the 599: 588:List of longest cantilever bridge spans 583:List of longest suspension bridge spans 691:This engineering-related article is a 606: 279:in the pictured beam is found using: 140:is the distance between two adjacent 7: 681: 679: 695:. You can help Knowledge (XXG) by 655:Illustrated Dictionary of Building 25: 683: 160:) or between the centers of the 45:relies largely or entirely on a 34: 1: 272:{\displaystyle \delta _{max}} 213:. The maximum bending moment 487:= Uniformly distributed load 127:Steel building § Types 778: 678: 124: 239:{\displaystyle M_{max}} 73:"Span" engineering 752:Structural engineering 747:Architectural elements 623:Mechanics of Materials 558:Area moment of inertia 550: 525: 503: 481: 455: 334: 273: 240: 202: 175: 551: 533:Modulus of elasticity 526: 504: 482: 456: 335: 274: 241: 196: 174: 742:Spans (architecture) 540: 515: 493: 471: 347: 286: 250: 217: 58:improve this article 142:structural supports 652:Brett, P. (2012). 546: 521: 499: 477: 451: 330: 269: 236: 203: 176: 762:Engineering stubs 757:Bridge components 704: 703: 665:978-1-135-13857-8 634:978-1-111-57773-5 549:{\displaystyle I} 524:{\displaystyle E} 502:{\displaystyle L} 480:{\displaystyle q} 449: 413: 328: 150:structural member 123: 122: 108: 16:(Redirected from 769: 725: 718: 711: 687: 680: 675: 673: 672: 639: 638: 626: 616: 610: 604: 555: 553: 552: 547: 530: 528: 527: 522: 508: 506: 505: 500: 486: 484: 483: 478: 460: 458: 457: 452: 450: 448: 437: 436: 435: 419: 414: 412: 401: 400: 399: 390: 389: 370: 365: 364: 339: 337: 336: 331: 329: 324: 323: 322: 309: 304: 303: 278: 276: 275: 270: 268: 267: 245: 243: 242: 237: 235: 234: 199:simply supported 162:bearing surfaces 118: 115: 109: 107: 66: 38: 30: 21: 777: 776: 772: 771: 770: 768: 767: 766: 732: 731: 730: 729: 670: 668: 666: 651: 648: 643: 642: 635: 618: 617: 613: 605: 601: 596: 573: 538: 537: 513: 512: 491: 490: 469: 468: 438: 427: 420: 402: 391: 375: 371: 350: 345: 344: 314: 310: 289: 284: 283: 253: 248: 247: 246:and deflection 220: 215: 214: 197:Side view of a 188:aerial tramways 130: 119: 113: 110: 67: 65: 51: 39: 28: 23: 22: 15: 12: 11: 5: 775: 773: 765: 764: 759: 754: 749: 744: 734: 733: 728: 727: 720: 713: 705: 702: 701: 688: 677: 676: 664: 647: 644: 641: 640: 633: 611: 609:, p. 137. 598: 597: 595: 592: 591: 590: 585: 580: 572: 569: 561: 560: 545: 535: 520: 510: 498: 488: 476: 462: 461: 447: 444: 441: 434: 430: 426: 423: 417: 411: 408: 405: 398: 394: 388: 385: 382: 378: 374: 368: 363: 360: 357: 353: 341: 340: 327: 321: 317: 313: 307: 302: 299: 296: 292: 266: 263: 260: 256: 233: 230: 227: 223: 207:bending moment 166:effective span 121: 120: 56:. Please help 42: 40: 33: 26: 24: 14: 13: 10: 9: 6: 4: 3: 2: 774: 763: 760: 758: 755: 753: 750: 748: 745: 743: 740: 739: 737: 726: 721: 719: 714: 712: 707: 706: 700: 698: 694: 689: 686: 682: 667: 661: 658:. CRC Press. 657: 656: 650: 649: 645: 636: 630: 625: 624: 615: 612: 608: 603: 600: 593: 589: 586: 584: 581: 578: 577:List of spans 575: 574: 570: 568: 566: 559: 543: 536: 534: 518: 511: 496: 489: 474: 467: 466: 465: 445: 442: 439: 432: 428: 424: 421: 415: 409: 406: 403: 396: 392: 386: 383: 380: 376: 372: 366: 361: 358: 355: 351: 343: 342: 325: 319: 315: 311: 305: 300: 297: 294: 290: 282: 281: 280: 264: 261: 258: 254: 231: 228: 225: 221: 212: 208: 200: 195: 191: 189: 185: 181: 173: 169: 167: 163: 159: 155: 151: 147: 143: 139: 135: 128: 117: 106: 103: 99: 96: 92: 89: 85: 82: 78: 75: –  74: 70: 69:Find sources: 63: 59: 55: 49: 48: 47:single source 43:This article 41: 37: 32: 31: 19: 697:expanding it 690: 669:. Retrieved 654: 622: 614: 602: 562: 463: 204: 177: 165: 157: 137: 131: 111: 101: 94: 87: 80: 68: 44: 180:power lines 144:(e.g., two 134:engineering 18:Bridge span 736:Categories 671:2023-12-16 607:Brett 2012 594:References 211:deflection 158:clear span 114:March 2023 84:newspapers 352:δ 255:δ 152:(e.g., a 54:talk page 571:See also 184:antennas 646:Sources 464:where 186:or for 148:) of a 98:scholar 662:  631:  565:stress 100:  93:  86:  79:  71:  146:piers 105:JSTOR 91:books 693:stub 660:ISBN 629:ISBN 209:and 154:beam 138:span 77:news 440:384 168:): 132:In 60:by 738:: 556:= 531:= 404:48 190:. 136:, 724:e 717:t 710:v 699:. 674:. 637:. 544:I 519:E 497:L 475:q 446:I 443:E 433:4 429:L 425:q 422:5 416:= 410:I 407:E 397:2 393:L 387:x 384:a 381:m 377:M 373:5 367:= 362:x 359:a 356:m 326:8 320:2 316:L 312:q 306:= 301:x 298:a 295:m 291:M 265:x 262:a 259:m 232:x 229:a 226:m 222:M 164:( 129:. 116:) 112:( 102:· 95:· 88:· 81:· 64:. 50:. 20:)

Index

Bridge span

single source
talk page
improve this article
introducing citations to additional sources
"Span" engineering
news
newspapers
books
scholar
JSTOR
Steel building § Types
engineering
structural supports
piers
structural member
beam
bearing surfaces

power lines
antennas
aerial tramways

simply supported
bending moment
deflection
Modulus of elasticity
Area moment of inertia
stress

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.