Bridges and MenGrosset & Dunlap, 1966 - 343 páginas |
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Página 9
... piles ? To support a stone pier , the piles had to go well in . A stone - arch bridge was an expensive improvement on a timber bridge and , to be worth it , had to last . Yet the most impressive masonry above the water was only as ...
... piles ? To support a stone pier , the piles had to go well in . A stone - arch bridge was an expensive improvement on a timber bridge and , to be worth it , had to last . Yet the most impressive masonry above the water was only as ...
Página 64
... piles , usually had to stop short of foundations invulnerable to scour . Theoretically , piles were driven to " refusal , " that is , to the point at which they refused to go any deeper . In practice , this refusal was determined rather ...
... piles , usually had to stop short of foundations invulnerable to scour . Theoretically , piles were driven to " refusal , " that is , to the point at which they refused to go any deeper . In practice , this refusal was determined rather ...
Página 77
... piles driven to refusal by four extra - heavy drop - ham- mers , each weighing from 1350 to 1740 pounds . Perronet experi- mented with horse - driven piles and found that two horses could drive three piles a day - at considerably less ...
... piles driven to refusal by four extra - heavy drop - ham- mers , each weighing from 1350 to 1740 pounds . Perronet experi- mented with horse - driven piles and found that two horses could drive three piles a day - at considerably less ...
Índice
How Bridges Were Invented | 1 |
The Mighty Roman Arch | 7 |
The Engineer Vanishes from Europe but Appears in Asia | 19 |
Direitos de autor | |
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American appearance arch army became British Brooklyn building built cables caisson called cantilever carried century Civil completed connected construction cost covered cross deep Eads East engineer fall famous feet Figure finally fire five followed force foundations four French gave George girder hand head heavy Henry houses hundred important iron Island Italy James John known later length less loading London Louis March Michigan middle miles named nearly never once Paris passed piers piles Pont problem rail railroad Rennie river road roadway Robert Roebling Roman running shore side soon span stand steel Steinman Stephenson stone story stream structure suspension bridge Telford Thomas timber tion took tower town train truss tunnel turned United Washington whole wind wire York