Encyclopedia Americana, Količina 8Americana Corporation, 1965 |
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Stran 435
... feet . From small beginnings earth dams have played an important part in the development of the water resources of the United States . As of 1958 there were over 1,200 earth dams in the United States . In addition , there were literally ...
... feet . From small beginnings earth dams have played an important part in the development of the water resources of the United States . As of 1958 there were over 1,200 earth dams in the United States . In addition , there were literally ...
Stran 437
... feet high are still standing . History records that the dam was partially washed out several times and repaired . The final catastrophe is believed to have occurred between 542 and 570 A.D. The failure of the Marib Dam transformed the ...
... feet high are still standing . History records that the dam was partially washed out several times and repaired . The final catastrophe is believed to have occurred between 542 and 570 A.D. The failure of the Marib Dam transformed the ...
Stran 445
Table 6 - BUTTRESS DAMS OVER 200 FEET HIGH In feet ; where available the vertical distance between lowest part of foundation and top of dam proper , but may be height above river bed . HG following height indicates hollow gravity type ...
Table 6 - BUTTRESS DAMS OVER 200 FEET HIGH In feet ; where available the vertical distance between lowest part of foundation and top of dam proper , but may be height above river bed . HG following height indicates hollow gravity type ...
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