prospective, of Oak Orchard is not sufficient to warrant the expenditure of such an amount in protecting the substructure, and therefore recommends that no further work be done at this place. For the Board: CHAS. J. ALLEN, Lieut. Col., Corps of Engineers, RR 2. IMPROVEMENT OF OLCOTT HARBOR, NEW YORK. REPORT OF OPERATIONS. Three cast-iron mooring cleats were fastened upon the east pier to take the place of wooden timber heads which had become rotten and broken, and an open joint between the inner end of the west pier and the sheet-pile bulkhead, which temporarily closes a breach in that pier, was closed by driving in a piece of timber and filling the hole caused by the wash with stone, brush, and gravel. The repairs were begun November 12 and were completed November 15, 1903. PROPOSED OPERATIONS AND REMARKS.. The commerce of Olcott is at present small, but a line of steamers from Olcott to Thousand Island points has been established, and an electric railway line was built to Buffalo in 1900. This is a freight as well as a passenger railroad, and connects with the Erie Railroad and the New York Central and Hudson River Railroad, and handles the freight cars from these roads. Summer hotels have been opened, and Olcott seems destined to become a popular summer resort, as well as a place of commercial importance. In order to complete the channel of the project and preserve the piers, now much decayed, it is estimated that $20,000 will be required and can be profitably expended during the next fiscal year. Of this sum $5,000 will be needed for completing the channel of the project and for redredging where the channel fills in annually; $5,000 will be needed to repair the most decayed parts of the two piers, and $10,000 will be needed to rebuild the west pier for 200 feet at the inner end. The last item is important and urgent. Money statement. July 1, 1903, balance unexpended June 30, 1904, amount expended during fiscal year, for maintenance of improvement July 1, 1904, balance unexpended.... $252.24 77.95 174.29 [Amount that can be profitably expended in fiscal year ending June 30, 1906, for maintenance of improvement, in addition to the balance unexpended July 1, 1904.... Submitted in compliance with requirements of sundry civil act of June 4, 1897, and of section 7 of the river and harbor act of 1899. 20,000.00 Arrivals and departures of vessels for the year ending December 31, 1903. Total arrivals and departures (tonnage 13,617) Amount of revenue collected year ending December 31, 1903. Shipments by lake, none; about 5,000 passengers arrive and depart by water annually. RR 3. IMPROVEMENT OF HARBOR AT CHARLOTTE, NEW YORK. REPORT OF OPERATIONS. Concrete superstructure on west pier.-The abandonment of the modification of project to narrow the channel to 200 feet by means of 3,600 linear feet of brush mattress and stone ballast, at an estimated cost of $15,000, having been authorized by letter of the Chief of Engineers dated January 24, 1903, and the fund of $15,000 turned over to maintenance, plans and preparations were made for rebuilding about 400 feet of the most decayed superstructure of the west pier with concrete. This work was authorized to be done by day's labor. At the beginning of the fiscal year a concrete mixer had been purchased and CHARLOTTE HARBOR,N.Y. CONCRETE SUPERSTRUCTURE ON WEST PIER. 301.5 LIN. FEET BUILT IN 1903. To accompany annual report for 1904, of Maj. Theo. A. Bingham, Corps of Engineers, U.S.Army. 6 To FT. the preparatory work advanced. During the month of July the preparatory work was completed. This consisted of putting up complete a derrick scow for handling concrete blocks weighing 9 tons, making and setting up 13 molds for the concrete blocks, installing concrete mixer on scow and loading on scows at Little Sodus Bay 156 cubic yards of beach gravel and sand for making concrete. The work of tearing out the old decayed superstructure was begun August 4, 1903, at station 1255, west pier, about 50 feet inshore of lake shore line, and then carried lakeward. As the tearing out advanced the work of leveling and repairing the timber crib substructure at the level of low water (zero of the Oswego and Charlotte gauges) was carried on. This work was greatly retarded due to the high stage of water and the muddy condition of the water, which made it impossible to see the work two or more feet under water, and required the employment of divers to fit and fasten and level most of the timbers put in to form the required bearing surface for concrete blocks. The crib substructure was found to be of poor construction (it was built in 18291834) necessitating much unlooked-for repair work. In the case of two cribs, 30 feet long each, it was necessary to remove the harbor walls to the depth of 5 to 7 feet below low water and build and set in place new crib work. The inner end of the work was about 50 feet inshore from the lakeshore line, and when the superstructure was removed much trouble was also caused by sand being thrown in by waves over the newly prepared foundation, requiring repeated cleaning off of sand before the concrete blocks could be set in place. The total length of pier rebuilt with concrete was 301.5 linear feet, and the cost of tearing out the old work and preparing the crib substructure for a foundation for concrete blocks was $19.28 per linear foot. The making of concrete blocks, setting them in place, replacing stone filling, and making the concrete deck over the blocks and stone filling was carried on as the foundation work progressed. The design of the concrete superstructure is shown on the drawing herewith. All of the concrete blocks and concrete in place was made of 1 part Lehigh Portland cement, 2 parts sand, and 64 parts beach gravel and stone. This beach gravel and stone was found by test to run quite uniformly, 2 parts gravel passing through a screen of 1-inch mesh and catching on a screen of 14-inch mesh, and 44 parts stone from 1 inch to 2 inches in diameter. The concrete was found, by test of two blocks of 1 cubic foot each, to weigh 153 pounds to the cubic foot. The concrete superstructure over the length of pier of 301.5 feet was completed on November 27, 1903, at a total cost for labor and materials, repairs to plant, etc., but exclusive of the cost of concrete mixer and derrick and derrick machinery, of $12,663.41, or $42 per linear foot. This cost is itemized as follows: Removing old superstructure and leveling and repairing crib substructure, per linear foot, $19.28 Concrete blocks, making and placing, 56 blocks, 248.2 cubic yards, $12.30 per cubic yard Replacing stone filling between blocks, and incidentals Concrete in place, including making and placing forms, manhole covers, 427.8 cubic yards, $7.484 per cubic yard Total... $5,812, 92 2, 051.55 597.07 3, 201.87 12, 663. 41 |