| Drawing-sheets, contents of | 338 | |
| Drawings, making of | 335 | |
| Draw-spans, adjustment of | 128 | |
| Draws, pull-back | 104 | |
| Drifting tests | 249 | |
| Drillings for chemical analysis | 246 | 247 |
| Drums, details of | 192 | |
| Drums for Halsted Street Lift-Bridge | 112 | |
| Drum webs | 193 | |
| Duties of bridge specialist | 3 | |
| Dynamite in pier-sinking, use of | 303 | |
| Ease in designing | 13 | |
| East Omaha Bridge | 135 | 136 |
| East Omaha Bridge piers | 303 | 314 |
| East Omaha draw-span, equalizers for | 125 | |
| East Omaha draw-span, rising of ends | 126 | 127 |
| Eccentric loading from sidewalks | 222 | |
| Economical conditions for cantilever bridges | 56 | |
| Economic depths for trusses with polygonal top chords | 32 | |
| Economic depths of plate girders | 33 | |
| Economic depths of trusses | 30 | |
| Economic functions of cantilever bridges | 70 | |
| Economic layouts for viaducts | 87 | |
| Economic length of anchor-arm for fixed distances between main piers | 75 | |
| Economic length of main span in cantilever bridges for fixed distances between anchorages | 74 | |
| Economic length of suspended span | 70 | |
| Economic panel lengths | 33 | |
| Economic principle for any layout of spans | 36 | |
| Economic relations of cantilever bridges | 57 | |
| Economics for crossings involving danger of washouts | 38 | |
| Economic span lengths | 33 | 34 |
| Economic span lengths for elevated railroads | 92 | 93 |
| Economic span lengths for trestles | 86 | 180 |
| Economic span lengths, mathematical demonstration of | 34 | |
| Economy, comparative, for arches and simple truss spans | 82 | |
| Economy in design | 30 | |
| Economy in roof-trusses | 57 | |
| Economy in trestles and elevated railroads | 36 | 84 |
| Economy in trusses with parallel chords | 31 | |
| Economy, necessity for | 15 | |
| Effective depths | 145 | |
| Effective diameter of rivet | 165 | |
| Effective lengths | 145 | |