Problems of the Panama Canal: Including Climatology of the Isthmus, Physics and Hydraulics of the River Chagres, Cut at the Continental Divide and Discussion of Plans for the Waterway, with History from 1890 to DateMacmillan, 1907 - 269 lappuses |
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acre-feet adopted Alhajuela annual April August average Boca cent Chagres River channel Chief Engineer Colon Comité Technique construction continental divide contractor cost cubic feet cubic metres cubic yards Culebra Culebra cut curve December discharge dry season entire estimated excavation February feet per second figures flood flow fluviograph freshets Gamboa Gatun gaugings height important inch-miles inches Isthmian Canal Commission Isthmus Isthmus of Panama January July June La Boca labor Lake Bohio latter length less lock canal locks low water March maximum mean tide measured monthly months Nicaragua noon November observations ocean October old Company outflow Pacific Panama Canal Company Panama Railroad rainfall rainy season ratio records regulation rise rock San Juan river sea level September ship slope square miles stream subbasin summit level Table temperature tidal lock tion traversed United volume water level width winds yellow fever
Populāri fragmenti
34. lappuse - An act relating to' the limitation of the hours of daily service of laborers and mechanics employed upon the public works of the United States and of the District of Columbia...
33. lappuse - That a lock canal be constructed across the Isthmus of Panama connecting the waters of the Atlantic and Pacific oceans, of the general type proposed by the minority of the Board .of Consulting Engineers, created by order of the President dated...
15. lappuse - Commission is of the opinion that ' the most practicable and feasible route ' for an Isthmian canal, to be ' under the control, management, and ownership of the United States ' is that known as the Nicaragua route.
252. lappuse - It may flow to any extent which Nature may prompt. It is not only rendered harmless by being securely impounded by the great dams at Bohio and Alhajuela, which create the vast lake and reservoir described, but, on the other hand (as is well stated by General Abbot in the November Forum), "It may safely be affirmed that the Chagres River is no longer an element of danger, but is rather a useful friend, whose assistance will be of great value to the canal in its operation.
28. lappuse - Contracts for the purchase of supplies involving an estimated expenditure exceeding $10,000 shall only be made after due public advertisement in newspapers of general circulation, and shall be awarded to the lowest responsible bidder, except in case of emergency, when, with the approval of the Secretary of War, advertising may be dispensed with. In the making of contracts for supplies or construction involving an estimated expenditure of more than $1,000 and less than $10,000 competitive bids should...
33. lappuse - Provided, That no part of the sum herein appropriated shall be used for the acquisition of land within the States of Arizona, California, Colorado...
41. lappuse - ... labor? If the elements of time and cost did not enter so vitally into the undertaking, the Commission might do this; but because of the unprecedented and greatly extended industrial activity of the time, and the consequent violent competition for all classes of superintendents, foremen, subcontractors, skilled mechanics, and even ordinary laborers, it would take the Commission years to secure men and build up departmental construction organizations which would equal...
228. lappuse - Such canal shall be of sufficient capacity and depth as shall afford convenient passage for vessels of the largest tonnage and greatest "draft now in use, and such as may be reasonably anticipated, and shall be supplied with all necessary locks and other appliances to meet the necessities of vessels passing through the same from ocean to ocean; and he shall also...
253. lappuse - Africa as an experiment, and disappeared when they were sent back], and yellow fever. The latter, after having been absent from the isthmus for at least six years, was imported in 1897, and continued about six months, from March to August, when it again disappeared after very light ravages (only six deaths). Thus it cannot be considered that this pest is really epidemic on the isthmus. From the other infectious epidemics, such as variola, typhoid fever, diphtheria, etc., the isthmus appears to be...
25. lappuse - That this committee approve and recommend for adoption by the commission a plan for a sea-level canal, with a bottom width of 150 feet and a minimum depth of water of 35 feet and with twin tidal locks at Miraflores, whose usable dimensions shall be 1,000 feet long and 100 feet wide, at a total estimated cost of $230,500,000.