Twelve feet of 6-inch blue-stone curb and coping equal 1 cubic yard; 14 feet of 5inch blue-stone curb and coping equal 1 cubic yard; 24 feet of 4 x 16 inch blue-stone curb and coping equal 1 cubic yard; 24 feet of bridge stone equal 1 cubic yard; 32 feet of 12-inch gutter-stone equal 1 cubic yard; 10 feet of 6-inch granite curb equal 1 cubic yard; 12 feet of 5-inch granite curb, equal 1 cubic yard; 6 square yards of blue or rubble pavement equal 1 cubic yard; 9 square yards of cobble pavement equal 1 cubic yard; 500 or 14 square yards equal 1 cubic yard. This haul is allowed only when old material is moved from line of street to property-yard. In the manuscript of my report of November 30, 1875, was given a summary of main sewer rates, which should have appeared on page 373 of the printed report of the Commissioners of December 1, 1875, but which was, through some inadvertence, omitted. It is contained in this table. MAIN SEWER RATES. First. The cost of the work as obtained by a detailed estimate of its excavation and masonry, viz: Rates for bricks, per M..... Rates for stone, per perch.. Rates for excavation, for 16 feet deep and less, per cubic yard... and for all over 16 feet deep, per cubic yard. Rates for shoring, per linear foot $23 00 6 50 40 77 1 08 Second. An addition of 15 per centum for contingencies. Third. A further addition of 15 per centum on account of the manner of payment. The following are the bids upon which cash contracts were awarded by the Commissioners, after due notice by advertisement, and are considerably lower than the average of all bids received. It will be seen that they are generally in excess of the board rates: Bids made for laying only; cost of pipe added at equivalent of board rates in cash, bonds rated at 70 cents. Furnishing and laying 6-inch straight Furnishing and laying 15-inch straight Furnishing and laying bricks per lin. foot. ....do.... Brick masonry. per M. 17.00 24 28.5 APPENDIX No. 11.-TABLE OF CASH CONTRACTS. TABLE NO. 5.-Cash contracts for improvements and current expenses of the District government from June 20, 1874, to November 30, 1876. [Contracts marked "Completed" are paid in full, (as per statement of auditor of District of Columbia,) except as otherwise noted in the column of remarks.] Current expenses. Aug. 7, 1874 1 Holtzclaw & Graham.. Aug. 22, 1874 2 Samuel S. Hunt. Aug. 23, 1874 Aug. 24, 1874 Apr. 9, 1875 Oct. 28, 1874 Apr., 1875 11 Furnish and plant 500 trees wherever designated by the engineer, Build and complete a school-house in the county of Washington... Sprinkling, sweeping, and cleaning all of the streets and avennes TABLE NO. 5.-Cash contracts for improvements and current expenses, &c.—Continued. Apr. 21, 1876 21 Joseph Williams.. Apr. 21, 1876 22 1, 1875. Description and locality of work. Cost. Remarks. This contract canceled by mutual consent of Difference between bonds and cash allowed on former contract, No. $11, 821 55 Charged to current expenses. Lay Neuchâtel rock pavement on the carriage-way of Grant st., Furnish sewer-pipe, in such quantities as may be ordered, of the Resurface concrete pavement of G st., between Thirteenth and Grade South Capitol st, bet. M and N sts., s. e.. Grade South Capitol st., from M st. to Eastern Branch. Sweeping and cleaning all of the alleys in the cities of Washington expense. Construct and complete a brick school building at the intersection F. H. Smith and H. W. Furnish and put into the new brick school-house to be erected at May 19, 1876 23 Thomas P. Morgan the intersection of Delaware ave. and Second st., s. w., the so- Dredging James Creek Canal, from the Arsenal grounds to Virginia ave. Completed without cost to the District. 6,097 19 Completed. This contract canceled by mutual consent of Construct sea-walls on James Creek Canal at N st. 8..... Also to remove old pivot-bridge abutments and old wall at N st. 8., and construct one Howe truss-bridge over James Creek Canal, at N st., s. Extend retaining walls at approaches to N st. bridge, and construct 8, 435 45 Required for completion of work, $13,894 03. iron fence for same. Also set curbs, pave the carriage-way with blue-rock, and lay brick foot-walk on the east side of 1st st., bet. M and N sts., s. w. Also to construct two sewer-traps at M st. (south) bridge Grade and relay old material on N st. s., bet. James Creek Canal and 2d st. e. and lay blue-rock pavement on carriage-way on said N st., bet. James Creek Canal and 3d st. e. May 27, 1876 26 Simon Carmody. Grading, graveling carriage-way, relaying old material on Del. ave., bet. Mass. ave. and C st., n. c. Also grading and relaying old material on 1st st., bet. Mass. ave. and C st., .e., and on E st., bet. 1st and 2d sts., n. e. May 29, 1976 27 Stephen Talty Setting curbs, laying cobble-stone gutters, flag footways, and graveling carriage-way on K st., bet. 3d and 7th sts., n. e. Grading, setting curbs, laying brick foot-walks on M st, bet. 2d and Sewering and relaying cobble-stone pavement in west alley in 20, 091 80 Completed. Extinguishes all claims under former contract No. 316 of board of public works and extensions, except payment of balance due on March 22, 1876, date of cancellation of contract, pursuant to joint resolution approved March 14, 1876. Completed. Extinguishes all claims under former contract No. 1047 of board of public works and extensions, except payment of balance due on March 22, 1876, date of cancellation of contract, pursuant to joint resolution approved March 14, 1876. Retain due of $213. 7,531 87 1,690 73 Completed. Extinguishes all claims under former contract No. 826 of board of public works and extensions, except payment of balance due on March 22, 1876, date of cancellation of contract, pursuant to joint resolution approved March 14, 1876. 21, 319 79 Completed. Extinguishes all claims under former contract No. 264 of board of public works and extensions, except payment of balance due on March 22, 1876, date of cancellation of contract, pursuant to joint resolution approved March 14, 1876. |