Appendix to the Journals of the Senate and Assembly of the .. session of the Legislature of the State of California . ottom width 12 feet, depth 5 feet—16,579 cubic yards, at 10cents .- 1,658 00 1 mile of ditch, bottom width 12 feet, depth 3 feet—8,817 cubic vards, at 10 cents . 882 00 $25,919 00Lateral Drains. [Estimate per mile.] Average depth 7 feet, bottom 4 feet, side slopes 1 to 1—15,048 cubicyards, at 15 cents .|2,257 00 2 highway bridges, at |75 150 00 6 farm entrance bridges, at $50 300 00 $2,707 00 65>^ miles, at $2,707 $177,308 00 23 boxed crossings for irrigation canals, at $50
Appendix to the Journals of the Senate and Assembly of the .. session of the Legislature of the State of California . ottom width 12 feet, depth 5 feet—16,579 cubic yards, at 10cents .- 1,658 00 1 mile of ditch, bottom width 12 feet, depth 3 feet—8,817 cubic vards, at 10 cents . 882 00 $25,919 00Lateral Drains. [Estimate per mile.] Average depth 7 feet, bottom 4 feet, side slopes 1 to 1—15,048 cubicyards, at 15 cents .|2,257 00 2 highway bridges, at |75 150 00 6 farm entrance bridges, at $50 300 00 $2,707 00 65>^ miles, at $2,707 $177,308 00 23 boxed crossings for irrigation canals, at $50 1,150 00 Railroad iron-pipe culverts ... 6,500 00 Right of way, 23% acres, at $150 3,563 00 $214,440 00Organization, engineering, superintendence, etc., 10 per cent 21,444 00 Total $235,884 00 The construction difficulties which will be. encountered in the execu-tion of this plan are of a somewhat uncertain nature. It will be neces-sary to make the excavations during the fall and early winter when thesoil water is at its lowest stage. The intercepting ditch can probably be FRESNO DRAINAGEOpen-Drain System,. PLANS AND ESTIMATES FOR DRAINAGE OF FRESNO DISTRICT. 61 constructed with a floating dredge more expeditiously atid cheaply thanby any other method, for the reason that sufficient water will likely bedeveloped for floating the machine, in which case the work can be doneat any season of the year. The parallel ditches may probably be madeeither wholly or in part by dry-land machines. A part of this work,however, will consist of the proper placing of the excavated earth inthe form of road embankments. Hardpan will be an undeterminedfactor in the work, as will also spots of water-bearing soil or careful cleaning and care of these ditches will be essential totheir efficiency, for they must be kept clear and in condition to permita ready flow of water over the bottom at all times. The loose characterof the soil and the rapid growth of vegetation will make this a
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Keywords: ., bookcentury1800, bookdecade1850, bookidappendixtojo, bookyear1853
