1st. 8 cribs, each 32 feet long by 17 feet wide, to rest upon the bottom, and to rise 4 feet above the level of high water of spring tides. 2d. 2 cribs, to join the extremities of the above line at either end; each to be 17 feet wide at the junction, and to taper to 12 feet wide at the opposite ends, and to be 32 feet long. 3d. 18 cribs to prolong the line on either side of the above to 4 feet above the level of high water of spring tides, to Beach Point on the one hand, and to the opposite shore on the other; each to be 32 feet long and 12 feet wide. 1. Cost of eight cribs first mentioned: Each of these cribs will cost as follows: For 1,632 lineal or cubic feet of hemlock timber, sawed or hewn, For 935 lineal or cubic feet of hemlock timber, sawed or hewn, For 6 piles, for aligning the cribs, of round spruce timber, each 32 $456 96 233 75 27 13 21 75 For 715 pounds of wrought iron for bolts, 1 inch square, at 5 cents per pound 39 32 For 136 pounds of wrought-iron spikes for fastening sleepers to 12 24 447 00 For workmanship in framing the above, and for floating into position, filling with ballast stone, and driving piles around the same 300 00 Add 10 per cent. for contingencies Total cost of one of the above cribs Then 8 cribs, at $1,791 96 each, will cost 2. For the two cribs to be placed at each end of the above: For 1,504 lineal or cubic feet of hemlock for longitudinal pieces, each 32 feet long, sawed or hewn, 1 foot square, at 28 cents per lineal or cubic foot.... For 652.5 lineal or cubic feet of hemlock for cross-ties, the pieces to average 143 feet long sawed or hewn, 1 foot square, at 25 cents per lineal or cubic foot.... For 38 planks, averaging 14 5 feet long, 8 inches wide and 3 inches thick, for flooring=1,102 feet board measure, at $21 per M. For six piles of round spruce timber, each 18 feet long and 10 inches in diameter at the smaller end 810 feet board measuse, at $21 per M..... = 1, 538 15 153 81 1, 791 96 14,335 68 421 12 163 13 23 14 17 OI For 534 pounds of wrought iron for bolts 1 inch square, at 5 cents per pound.... 29 37 For 97.37 pounds of wrought-iron spikes for fastening sleepers and floorings, pointed and headed 3 by 3 inch square, at 9 cents per pound.. For 39.4 cords of heavy ballast stone for filling the cribs, at $12 per cord, 128 cubic feet to the cord.... For workmanship in framing, bolting, floating into position, and filling with ballast stone and driving piles. Add 10 per cent. for contingencies... $8.76 472 SO 300 00 1, 435 33 143 53 Total cost for building one of the above cribs.... Then 2 cribs at $1,578 86 each, will cost... 1,578 86 $3, 157 72 3. For the 18 cribs necessary to complete the work, each 12 feet wide: For 480 lineal or cubic feet of hemlock, 12 feet long, for cross-ties, For 4 piles for aligning crib, averaging 16 feet long and 10 inches $241 92 120 00 19 00 10 08 For 534 pounds of wrought iron for bolts 1 inch square, at 53 cents per pound... 29 37 For 93.37 pounds of wrought-iron spikes, for fastening sleepers and flooring, pointed and headed 3 by 3 inch square, at 9 cents per pound 8 76 For 27.2 cords of heavy ballast-stone for filling the cribs, at $12 per cord (128 cubic feet to the cord).. 326 40 For workmanship in framing, bolting, floating into position and filling with ballast-stone and driving piles 300 00 1,055 53 The following bill of lumber will be required: 976 pieces of hemlock, 32 feet long = Board measure. 374,784 96,696 6,036 12 by 12 inches 31,232 feet, cubic or lineal........... 474 pieces of hemlock, 17 feet long = 8,058 feet, cubic or lineal... 34 pieces of hemlock, 144 feet long: 503 feet, cubic or lineal... 744 pieces of hemlock, 12 feet long8,928 feet, cubic or lineal..... = 48,721 lineal or cubic feet. 343 spruce planks, each 17 feet long, 8 inches wide, and 3 inches thick 40 spruce planks, each 15 feet long, 8 inches wide, and 3 inches thick 700 spruce planks, each 12 feet long, 8 inches wide, and 3 inches thick 48 spruce piles, each 22 feet long, and 10 inches diameter at the smaller end 40 spruce piles, each 18 feet long, and 10 inches diameter at the smaller end 107,136 11,662 700 16,800 8,352 5,680 44 spruce piles, each 14 feet long, and 10 inches diameter at the smaller end 4,884 632,730 NOTE. In estimating for the eight cribs to occupy the deepest channel, and the two tapering cribs at each extremity of that section, a middle longitudinal wall of timber is provided for each of the said cribs. The cribs, 12 feet wide, as they will be in shoaler water, do not need this additional strength, and it has not been provided for in their cases. C. Estimate of the cost of constructing 106 jettees perpendicular to the shore, between Beach Point and the eastern extremity of Moon Pond meadow. 1. Estimate of the cost of one such jettee: For 8 small round spruce piles, from 6 to 8 inches in diameter, Add 10 per cent. for contingencies.. Total cost of one jettee.... Then 106 jettees, at $17 60 each, will cost..... Total amount of estimate C.... $8.00 5940 260 16 00 160 17 60 $1,865 60 500 00 2,365 60 Report of Captain John A. Tardy, Corps of Engineers, upon the light-house pier, Buffalo, New York; repairs and completion of sea wall at Buffalo, New York, and Genesee River harbor. LIGHT-HOUSE PIER, BUFFALO, N. Y. I was authorized by the department letter of September 14, 1864, to commence the proposed repairs to the light-house pier, Buffalo, New York, but nothing was accomplished during the fall owing to the lateness of the season. Active operations for the repair could not be commenced previous to the 1st of July, 1865, and the work is now being pushed forward vigorously. This pier is very much out of repair. The piles on the harbor side and at the extremity need replacing. The stone work on the harbor side has been injured and thrown out of place through the action of the ice. The outer slope (lake) was paved from the top of the pier down to the water's edge, with large stones inserted edgewise, and additional protection was given to this slope at various times by throwing in riprap and driving piles. This has not, however, answered fully, and the pavement in many places has been completely displaced. The amount available for repairs being small, it was determined to expend it in protecting the most exposed portions, i. c., the lake slope, leaving the harbor side for the present. It was evident that the taking up and relaying of this pavement would be a mere waste of money, without first adopting some plan for breaking the force of the sea before it should reach this slope. The plan determined on was to sink cribs filled with stone along the outer edge of the riprap already thrown in, with a row of piling in the exterior, and then to fill in the space between the pier and cribs with riprap. Having in this way obtained a more extending base, causing the seas to break at some distance from the paved slope, the latter could be repaired without danger of being again broken up. The amount now available is being expended in sinking the row of cribs mentioned above and driving the piles, which will exhaust this fall the present appropriation. Estimate of the amount required to place the pier in a complete state of repair. Taking up and relaying pavement on harbor side, repairing foundation, piling, &c.... $25,000 Cost of 15,000 cubic yards of riprap, taking up and relaying pavement of lake slope, piling, &c.. 75,000 Total cost of completing repairs 100, 000 H. Ex. Doc. 5- -94 REPAIR AND COMPLETION OF SEA-WALL AT BUFFALO, NEW YORK. The department having given orders, September 14, 1864, to commence operations on the sea-wall at Buffalo, New York, it was only possible during the fall to repair the breaches made in the old wall, and to quarry stone for extending this wall in the spring. The quarrying of stone in the United States quarry at Fort Porter, and transporting it to the sea-wall was found to be a very expensive business, although every effort was made to reduce the cost. About the end of July we were so fortunate as to succeed in purchasing about two thousand cords of large block stone, taken from the bed of Buffalo creek, and convenient to the work, for three dollars per cord. This will be more than sufficient to build the wall, the excess being used on the southwest pier, and has enabled us to cease quarrying. We were unable to commence operations this spring on the wall previous to June 1, being obliged to delay until the city authorities obtained possession of the ground. During the month of June a considerable portion of the trench for the foundations was excavated, and some concrete put in. The work is now being pushed forward vigorously, and a considerable length of wall will be com pleted by the close of the present working season. The amount expended during the fiscal year ending June 30, 1865, in repairing the breaches in the old wall, quarrying and transporting stone to the site of the wall, excavating trench for foundations, and laying a portion of concrete foundations, was This wall being constructed in a very exposed position renders necessary the building of a solid structure, composed of large blocks of stone well bonded, the whole resting on a good foundation, to withstand the shocks to which it is liable. A large portion of the old wall is constructed of small-sized stone, the facing and coping only being laid in mortar, the centre and back of the wall being dry stone-work, which renders it quite weak. This portion, however, is protected greatly by the sand thrown up in front from the lake. The proposed extension, however, would not receive as much protection in this way, the sand not making there; it requires, therefore, greater strength. The original estimate of the cost of repairing and completing this wall, a copy of which was sent to me by the department, was much too small. The completion of this wall the proposed length will require nearly 6,000 cubic yards of good stone masonry, which, on account of the position of the structure and consequent cost of transportation, together with the high price of labor and materials, cannot be built as it should be for less than $10 per cubic yard. Amount appropriated for repair and completion of sea-wall at Buf falo, N. Y.. Amount required for repair of existing wall.. $37, 500 8, 500 Amount available for extending this wall its proposed length..... 29, 000 Estimated cost of laying 6,000 cubic yards of stone masonry to com plete the wall as proposed 60,000 Additional amount required. 31,000 |