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| J.A.L. Waddell — INDEX — Bridge Engineering |
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MMacadam pavement, 1837 Machinery, 1787. See also Tables for Designing. bending stresses in wire ropes, 311 equipment, 1708 gears, pitch diameters of, 314-321 hand-operating, 1789 installation of, 1803 materials, 1709 movable spans, 1708 operating, 1726, 1727 supports, 1697 timber, 1840, 1841 unit stresses, 1709-1712 vertical-lift spans, 1789 wire ropes. See Tables for Designing. Machinery house, 1733 crane for, 1802 MacMartin, James, 1523 Magnitude of floods, 1110 Mailing drawings, 1398, 1399 Main girders of reinforced-concrete bridges, designing of, 924 Main members, highway truss bridges, 1642 railway truss bridges, 1641 Maintenance, bridge, troubles in, 1523 cost of, 1362 existing bridges, 1522 sewers and pipes during construction work, 1752 traffic, 1508, 1752 traffic during renewal, 1529 Maintenance and repairs as affecting layout, 1217 Maintaining correct form of shells, 1859 Make-up of chord sections, 173, 501 Making drawings, 1378 Mallet Triplex engine loading, 105 Manganese, 46 nickel steel, 61 steel, 57 Manhattan Suspension Bridge, New York, 27, 59, 659 Manifolding contracts, 1571 Man-power machinery for swing spans, 697 Manufacture, specifications for, 1741-1891 Manufacturers, bridge designing by, 37 Manville, 118 Map, hydrographic, 1149 Map of the United States showing the annual rainfall and record run-offs, 1115 Marching of soldiers, effect of, 117 Marietta Bridge, 600 Marking and match-marking, 1783 Marriotte's law, 14 Marston, A., 15 Maryland Steel Company, 68 Masonry, 1861 longest span, 19 bearings upon, 1657 first-class, 1862 inspection, 1451, 1453 laying during freezing weather, 1864 mortar for, 1864 permissible pressures on, 265 piers, 1020 proportioning of, 1020 batter for, 1021 plates, 453 pointing of, 1864 protection, 1529 second-class, 1863 testing old, 1518 Massiveness, 1179 Match-marking, 1528, 1783 Materials and workmanship, 1762 electrical, 1792 Materials for bridges, 45, 1632 abutments, 1031 ancient bridges, 13 approximate quantities of, 1871-1874 checking receipt of, 1477 evolution of, 16 furnishing of by purchaser, 1752 inspection of, 1412 loss of, 1768 machinery, 1709 prices of, 1354, 1355, 1359, 1360, 1757 records, 1477 reinforced-concrete construction, cost of, 1359, 1360 reports, 1487 sources of supply for, 1756 storing of, 1885 unit weights of, 1649 valuation of, 1480 Matthyssen, N. H., 717 Mattresses, 995, 1058, 1059, 1866-1868 anchoring of, 1062 basket-woven, 1060 standard types of, 1060 thicknesses of, 1064 Maumee River Bridge at Toledo, Ohio, 689, 980 Maximum shear, criterion for, 162, 164 Maxwell's law of reciprocal deflections, 237, 246 Mayari´ steel, 68 cantilever bridges of, 71 cost of, 70, 1080 eye-bars, 70 location of ore, 69 production of, 70 simple truss spans of, 71 testing of, 72 Mayer, James, 662 McKibben, F. P., 862 McMath's formula, 1115 Meanders of stream, 1091 Meaning of terms, 1882 Measurements of boring pipe, 1103 Medium steel, 45 economics of, 1200 Melan, 18 Melts, test specimens from, 1773 Memphis Bridges, 28, 69, 596, 1156 Merchants' Bridge, 25 estimate of cost of, 1351, 1353 Meroe, Ethiopia, arch bridge, 9 Merrill, Col., 473 Merrimac River Bridge at Newburyport, Mass., 1065 Merriman, Mansfield, 15 Merriman and Jacoby, 502, 591, 634, 1200 Metal, arches, origin of, 27 encasing of in concrete, 769 estimates of weights of, 279 extras for, 327 fatigue of, 255 identification of, 1771 injury to by seepage, 769 inspection of, 1763 loading, 1766 loss of, 1768 portions of bridges, 1632 prices, 1202 protection of, 765 sections, 47 unusual, 48 special cost of, 327 specification for, 1770 weight, computation of, 1377 weights of, in swing spans, 1242 Methods, pier sinking, 967 stress computation, 158 testing steel, 1772 Metropolis Bridge over the Ohio River, 25, 26, 88, 265 Michigan Avenue Bascule Bridge, Buffalo, 701 Millholland, James, 22 Milling, beams and stringers, 376-378, 1783 cantilever beams, 382 ends of I-beams, 331 trough sections, 334 Mill scale, removal of, 768 Mill work inspection, 1419 Mingo Junction Bridge, 598 Minimum thickness of concrete, 962 Minimum thickness of metal, 1661, 1680 Mistakes, 1555 Mixing of concrete, 951, 1043, 1853 Modern riveted trusses, advantages of, 748 Modjeski, Ralph, 72, 481, 598, 614, 619, 1066 Modus operandi of construction, 1757 Molitor, D. A., 213, 227, 237, 1181 Möller, 18 Moment, bending, criterion for, 164 coefficients for continuous beams, 845 diagram for plate-girders, 414-418 plate-girders, calculation of, 412, 414-418 proportioning for, 421-432 Moments of inertia of beams, columns, and arch ribs, 839 Moncrieff, J. M., 259 Monier, 18 Monolithic structures, stresses in, 842, 961 Monongahela Bridge, 594 Montgomery Waddell's types of bascules, 711, 712, 715 Monthly estimates, 1479-1483 estimate sheet, 1489 Monuments, 1467 Moorson, Capt. W., 717 Moran air lock, 1006 Morison, Geo. S., 25, 29, 660, 696 Mörsch, Emil, 784 Mortar, freezing of, 1044 masonry, 1864 retempering of, 1044 Motor-truck loads, 1537 Motor wagons, 108 Motors, electric, 1702, 1703, 1793, 1794 alternating current, 1793, 1794 direct-current, 1793 mounting, 1703 internal combustion, 1708 Mounting of motors, 1703 Movable bridges, 663-746 advantages and disadvantages of, 680 best kinds to adopt, 680 bob-tailed swings, 664 classes of, 664 comparison of lifts and swings, 680 comparison of vertical lifts and bascules, 682 cost of power for operating, 679-681 double rotating cantilever swings, 665, 666 economics of, 1208 electrical operation of draw spans, 679 gyratory lift, 669 history of, 663 horizontal folding draws, 665 lift bridges, 717-746 power for operating, 678, 1679-1701 cost of, 679-681 pull-back, 667 Schneider, C. C., paper by, 683 shear-pole draws, 665 vertical lift bridges, 717-746 wind loads for, 154 Movable jet, 992 Movable span, position of, as affecting layout, 1211 Multiple punches, 328 Multiple punching, 376-377 Multiple-track structures, bracing frames for, 277 Municipal Bridge at St. Louis, 481 Murphy, J. W., 23 Murphy-Whipple truss, 23 Murphy's formula, 1115 Mushroom anchors, 1062 |