Engineer Field Manual; I. Reconnaissance. II. Bridges. III. Roads. IV. Railroads. V. Field Fortification. VI. Animal Transportation. VII. Tables, Weights, Measures, and Specific Gravities Volume 1-7

Engineer Field Manual; I. Reconnaissance. II. Bridges. III. Roads. IV. Railroads. V. Field Fortification. VI. Animal Transportation. VII. Tables, Weights, Measures, and Specific Gravities Volume 1-7

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1917 edition. Excerpt: ...section. With this increased depth enter the table of level sections and take out the volume for a length of 100 feet. This method will give results correct to i per cent, corresponding to an accuracy in the levels of A foot in 20 feet. Table III. '4fi. Percentages to be added fo center heights of sidehill embankments and cuttings to obtain the center height of the level section of equal area: 47. To balance the cut and nil in a side cutting; the center line should be run so that there will be a slight cut along it. This will give a small excess of volume of cut over volume of fill, which is desirable. 48. Handling earth.--The excavation of a mass of earth and its formation into an embankment may be classified into loosening, loading, hauling, and spreading. Loosening with a plow will require 2 horses, 2 men, and a plow for each 40 yards per hour. If very hard, 4 horses will be required for the plow. With picks, 1 man for each 40 yards per day, or 10 men equal 1 plow. Loading material into carts or wagons will require 1 man for each 2 yards per hour. All other loading is Included as a part of the hauling. The haul or lead is the distance to be traveled from the point of loading to the point of dumping. The mean haul is the quantity usually considered, and is the distance from the center of gravity of the cut or excavation to the center of gravity of the fill. The following table gives the yardage made on various leads for wagons, carts, wheel and drag scrapers, wheelbarrows, and boxes, or other improvised facilities. The load units assumed are 1 yard for wagons, J yard for carts and wheel scrapers, J yard for drag scrapers, A yard for wheelbarrows, and Vs yard as a load for 2 men, carried in a box or otherwise. Table IV. 49. Yardage of earth...show more

Product details

  • Paperback | 146 pages
  • 189 x 246 x 8mm | 272g
  • Rarebooksclub.com
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 123661111X
  • 9781236611116