What Engineers Do: An Outline of Construction |
Contents
CHAPTER PAGE | 21 |
HOW MATERIALS HAVE INFLUENCED CON | 32 |
THE STEEL AGE | 47 |
Copyright | |
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alidade angles arch Bascule bridge beam bench mark bottom brick builders building built caisson called cantilever cantilever bridges carry cement chain chainmen CHAPTER Chorobates civil engineers coffer-dam column concrete construction contour line contour map course crete cross hair curve difference Dioptra distance driven earth Eddystone Lighthouse elevation erection feet floor frost line Greek Groma gromatici Hero of Alexandria highways hill horizontal I-beams inch instrument iron known lake layer load locked lower plate masonry material means measured metal method miles modern perhaps photograph piers piles pipe plumb bob pressure railroad rails ravine reinforced ridge river riveted road rock Roman sand scale shown in Fig sight soil spans spread footing stadia stone stream structural steel surface surveying surveyor suspension bridge telescope tion transit transitman triangle truss truss bridge tunnel vertical Vitruvius walls weight wheel wire wood