EXHIBIT C. Consolidated bill of cost of dike repairs made during fiscal year ending June 30, 1897. Pile driving: EXHIBIT D. Bill of cost of bank-head in vicinity of Chamois, Mo., 1897. Classification and extent. Cost in Total. Labor Piles Pine, 9,444 linear feet.. White oak, 2,308 linear feet Water oak, 7,215 linear feet Cypress, 4,239 linear feet. Coal and supplies...... $798. 22 1,463. 82 286. 19 649.25 520.12 82.89 $3,800. 69 Strand, inch galvanized. 663.85 231.87 95.20 40.65 Other fastenings, screw bolts, driftbolts, plate washers, spikes, staples, and clips. 300.22 1, 331.79 Rocking: 332. 28 Rock, delivered on barges, quarry landing, 3,971 cubic yards, at $1.0573 per cubic yard EXHIBIT E. Bill of expenditures on account of procuring willow brush during fiscal year ending June 30, Bill of expenditures on account of procuring rock ballast at Little Tavern Quarry during fiscal year ending June 30, 1897. Expenditures on account of plant during fiscal year ending June 30, 1897. EXHIBIT H. Bill of cost of survey work done during the fiscal year ending June 30, 1897. Statement of liabilities incurred under suballotment for systematic improvement in First Reach on account of improvement in Gasconade division, for each month of the fiscal year ending June 30, 1897. Total. 12, 965.73 71, 607.93 6,570.20 2,072. 43 1,044.06 14,524.90 5,918. 11 1,489. 78 116, 133. 14 1 a These items include $912.50 for hire of steamer Gasconade. Grand total of liabilities incurred during fiscal year on account of suballotment for systematic improvement, First Reach... Add value of construction materials and supplies on hand at close of previous fiscal year Deduct value of construction materials and supplies on hand June 30, 1897 Total net expenditure during fiscal year on account of improvement on Gasconade $116, 133. 14 20, 160.48 136, 293. 62 4,875. 13 131, 418. 49 APPENDIX K. ANNUAL REPORT ON CONSTRUCTION OF LOCK NO. 1, OSAGE RIVER, MISSOURI, BY CAPT. H. M. CHITTENDEN, CORPS OF ENGINEERS. MISSOURI RIVER COMMISSION, COLONEL: I have the honor to submit the following report of operations upon the construction of Lock No. 1, Osage River, Missouri: At the close of the last fiscal year the work had been taken from the hands of the contractors by purchase of plant and material and authority had been obtained to carry out its further prosecution by hired labor. The plans and specifications for the work were also subsequently changed by a reduction in the size of the lock to 220 feet between quoins and 42 feet width, by the substitution of concrete for rock masonry in its construction, and by establishing the lower miter sill at reference 94 above the St. Louis directrix. This partial revised project was approved by the Chief of Engineers November 23, 1896. A completion of the revised project, both for lock and dam, was deferred to a later day. Active operations were resumed about the middle of July, the immediate object in view being the excavation within the cofferdam for the foundation of the lock. This work, which continued for upward of four months, was attended with great difficulty. The river bottom is composed of alternate layers of impervious clay and water-bearing sand or gravel. The water in the gravel layers is under considerable pressure, and wherever pierced with pipes would force itself up to a level some feet above that of the river surface. As there had been several pile holes sunk into these successive layers, and as the pit for the pumps was sunk below the bottom of the proposed excavation, there were numerous springs spread over the bottom, all of which let in considerable quantities of water. Add to this that wherever a layer was cut through as the excavation proceeded it became a continuous fountain entirely around the coffer, but particularly on the shore side, and the problem of keeping the water down without a very extensive pumping plant was not easy of solution. Two new pumps, 12 and 15 inch, centrifugal action, were added to the plant already on hand, and with these it was barely possible to hold the water down to the bottom of the excavation. The earth was removed by hand except over the area which was within reach of a clamshell dredge maneuvered by means of a derrick on the cofferdam. The excavation was practically completed at the end of November, and preparations for driving piles in the foundation were begun. This work was completed before the end of the following month, and the work of preparing the piles for the grillage was in progress when the heavy flood, which arrived early in January, suspended work on the 6th of that month. An almost continuous stage of water, too high to permit pumping out the cofferdam, has prevented a resumption of operations since. During the progress of the work as above described the purchase and delivery of materials for the lock has gone on. The sand for the concrete is Missouri River sand dredged from Osage Chute, at the junction of the two rivers. The gravel has been dredged from the bars of the Osage River near the lock, and both materials are piled on the bank opposite the site of the lock. The delivery of the gravel was completed May 15, 1897, and that of the sand June 23. The lumber and iron for the grillage foundation was delivered in December, 1896. The cement for the foundation was in part delivered in November, 1896, and the balance in June, 1897. Contracts have been entered into for the lumber for the concrete forms and for the cement to be used in the construction of the walls. The more important materials thus delivered or contracted for are as follows: Gravel .cubic yards.. 12,000 .do.... .barrels.. do.... 5, 105 3,000 5,000 and a considerable quantity of minor articles. Negotiations are in progress for the purchase of an additional tract of land for the erection of buildings at the lock. During the past winter the full revised project for lock and dam was prepared with plans and specifications for construction. This project was approved June 29, 1896. In connection with the determination of suitable dimensions for inlet and outlet openings, considerable information was collected in regard to existing locks in this country, their size, dimensions and forms of valve openings, and times required for filling and emptying. The data so collected were analyzed by Mr. James A. Seddon, assistant engineer on surveys, gauges, and physical data, and the results arrived at seem to be of sufficient importance to justify publication. In a general way they show (1) That for the same valve area the filling or emptying of a lock is more rapid through the gates than through culverts in the walls. The effect of trends and sharp angles is distinctly noticeable. (2) That with like conditions of valve connection the rate of filling seems to be slower than that of emptying, even after the effect upon emptying of contraction of area by uncovering the upper miter sill is eliminated. Mr. Seddon's report, with accompanying plates, is submitted herewith. In determining the kind of cement to be used in the concrete of the lock walls considerable study was given to the question of a combined use of Portland and natural cements. It was thought that if a core of natural cement concrete could be used, faced with a thick exterior of Portland concrete, the weight necessary for stability, and the hardness and strength necessary to resist frost, abrasion of ice and boats, and wear of current, could be obtained at a much reduced cost below that of all Portland concrete. To determine whether a joint formed by the junction of the two kinds of cements or concretes would exhibit any special weakness arising from different rates of setting, a considerable number of briquets half and half of natural and Portland cements and several blocks of concrete 6 by 6 inches by 24 feet similarly composed were made. The results, which are stated in detail in the accompanying report of Assistant Engineer F. B. Maltby, show conclusively that there is no special weakness in such a joint, but that the joint is in every case stronger than a similar section of the weaker cement. Photographs illustrating the briquet experiments accompany Mr. Maltby's report. The revised estimate for the entire cost of the lock and dam, as presented in detail in the new project, is $325,000. This estimate being apparently a considerable increase over previous ones, it is important, for a proper understanding of the matter, to present a review of these earlier estimates. The first of these estimates appears in Major Miller's project, dated May 14, 1891. Lock.-Length over all, 339 feet 6 inches; length between quoins, 275 feet; width, 50 feet; lift, 8 feet 6 inches. Dam.-A timber and rock structure of 11.5 feet lift. Cost of lock and dam, $187,244. This project was modified somewhat on the recommendation of General Comstock and the above estimate was increased to $200,000. (Annual Report Chief of Engineers, 1892, p. 1742.) The first important revision of this estimate occurred in 1894, when the whole subject of the Osage Lock and Dam was exhaustively reviewed by a committee of the Missouri River Commission, consisting of Major Allen, Corps of Engineers, and Mr. R. S. Berlin, in a report to the Commission dated September 22, 1894. (Published in minutes of Commission meeting of November 28, 1894.) The lock considered was to be of the following description: Length over all.... Length between quoins.. Width of chamber. Ft. In. 340 6 276 O 52 0 10 6 A needle dam was also provided for. The following extract from the committee's report will show their estimate of the cost of this work: Estimated cost of the lock, including lockkeeper's dwelling, etc., according to best information at present attainable, $216,000. "The cost of the dam has not yet been figured, but it seems safe to assume that it will be sufficient to bring the total cost of lock and dam and appurtenances to about $300,000, though these figures may be modified one way or the other after proposals are received for building the lock." This estimate does not seem to have been adopted by the Commission, because in the next annual report the probable cost of the lock and dam is thus stated: "Based on such data as we now have, it appears that the probable total cost of the lock and accessories will be about $190,000, and of the dam about $75,000, or a total of $265,000, as against the estimate of $200,000 submitted in 1892. For reasons above given, this latter estimate could only be regarded as approximate." The "reasons" here referred to relate to a preceding paragraph in the same report, viz: "In November, 1894, a plane-table survey was made from the site selected for the lock and dam to a point about 30 miles above to ascertain the additional amount of land that would be overflowed, due to a stationary dam of 10.5 feet lift, should the river reach the highest recorded flood stage. The results of this survey showed that such a dam would, at the above stage, cause an additional overflow of 636 acres within the limits of the survey, or an increase of about 20 per cent in area of land flooded. In view of these results, the Commission decided February 11 that a modification of the plans of the dam to provide for a stationary dam of less lift than 10.5 feet, and upon this a low, movable dam to bring the lift to 10.5 feet when raised, would be advisable. It is proposed during the current season to make a complete examination of the site of the dam, and to prepare new plans and estimates of cost in accordance with the above decision." The dam provided for in the above $75,000 estimate was for a movable crest of only 24 feet lift, estimated to cost only about $11,000, and was in no sense a comprehensive project, such as was contemplated in the report of the committee above referred to. In January, 1895, an additional estimate was prepared for a movable dam, the type considered being the Chanoine Wicket. This estimate was $182,500. Substituting this figure for $75,000 would give as the estimated cost of the lock and a movable dam $372,500. It will thus be seen that no estimate for a lock and a movable dam of any comprehensive pattern has ever been below $300,000. None of these estimates, however, were ever acted upon. Subsequent to the date of the Annual Report for 1895 it developed that the foundation of the lock would have to be lowered about 5 feet for reasons fully explained in the present revised project and accompanying papers. As nearly as can be determined from the correspondonce on the subject, an estimate of the additional cost, which this change of plan would involve, was about $45,000. With this additional cost, the foregoing estimates of $300,000 and $372,500 would become $345,000 and $417,500, respectively. The changes authorized in the partial project approved by the Chief of Engineers November 23, 1896 (file mark 10588), viz, a diminution of the size of the lock, and the substitution of concrete for rock masonry in its construction, as well as the proposed adoption of a less expensive type of dam, will materially reduce the above |