The Encyclopedia Americana: A Library of Universal Knowledge, Količina 8Americana corporation, 1931 |
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Zadetki 1–3 od 79
Stran 436
... feet long on the crest and 208 feet high above the stream bed , 325 feet above the foundation . At its widest part , it is 1,150 feet thick . It has an impervious core , formed by building two earth mounds on the site and washing down ...
... feet long on the crest and 208 feet high above the stream bed , 325 feet above the foundation . At its widest part , it is 1,150 feet thick . It has an impervious core , formed by building two earth mounds on the site and washing down ...
Stran 439
... feet high . The volume of rock - fill is 1,747 , - 000 cubic yards . The Lower Ottay Dam , near San Diego , Cal . , is 161 feet above rock , 130 feet above natural surface , 565 feet long , 20 feet wide at the top and 282 feet at the ...
... feet high . The volume of rock - fill is 1,747 , - 000 cubic yards . The Lower Ottay Dam , near San Diego , Cal . , is 161 feet above rock , 130 feet above natural surface , 565 feet long , 20 feet wide at the top and 282 feet at the ...
Stran 440
... feet long and 74 feet high . The face members of the bents vary from 15 - inch I - beams on the low bents to 24 - inch I - beams on the high ones . The illustration shows a combination of steel Water Level or canyon with a valley ...
... feet long and 74 feet high . The face members of the bents vary from 15 - inch I - beams on the low bents to 24 - inch I - beams on the high ones . The illustration shows a combination of steel Water Level or canyon with a valley ...
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