CAPACITY OF FREIGHT CARS. [From the "American Architect."] A car-load is nominally 20,000 pounds. It is also 70 barrels of salt, 70 of lime, 90 of flour, 60 of whiskey, 200 sacks of flour, 6 cords of soft wood, 18 to 20 head of cattle, 50 to 60 head of hogs, 80 to 100 head of sheep, 9000 feet of solid boards, 17,000 feet of siding, 13,000 feet of flooring, 40,000 shingles, one-half less of hard lumber, one-fourth less of green lumber, one-tenth of joists, scantling, and all other large timbers, 340 bushels of wheat, 400 of corn, 680 of oats, 400 of barley, 300 of flax-seed, 360 of apples, 430 of Irish potatoes, 360 of sweet potatoes, 1000 bushels of bran. dale 66 Anthracite, solid, of Pennsylvania. 66 broken, loose. 66 moderately shaken Ash, American white, dry. Brass (copper and zinc), cast 66 rolled. Brick, best pressed common hard Brickwork, pressed brick Cement, hydraulic, ground, loose, American, Rosen hydraulic, ground, loose, American, Louis- 54 87 504 524 150 125 100 140 112 56 50 Weight of Cubic Foot of Substances (Continued). Lime, quick, ground, loose, or in small lumps 53 Marbles. (See Limestones.) Masonry, of granite or limestone, well-dressed 165 Weight of Cubic Foot of Substances (Concluded). Water, pure rain or distilled, at 60 degrees F. Average weight, in lbs. 182 103 80 to 110 120 59 52 32 to 45 55 25 34 45 1342 165 69 45 49 90 to 106 99 to 117 120 to 140 151 162 655 175 5 to 12 15 to 50 25 490 125 37 62 459 20 to 30 38 623 64 60.5 437 Green timbers usually weigh from one-fifth to one-half more than dry. DIMENSIONS AND WEIGHT OF CHURCH BELLS. MANUFACTURED BY WILLIAM BLAKE & Co., BOSTON. The actual weights usually exceed above from two to three per cent. WEIGHT OF BUILDINGS. [From the "American Architect."] It has been calculated that the pressure per square foot of the superstructure upon the foundation walls of a few of the bestknown buildings is as follows: Dome of United-States Capitol at Washington, 13,477 pounds Girard College, Philadelphia. 13,440 66 while the pressure upon the earth per square foot in the case of St. Paul's, London, is 42,950 pounds. COST OF PUBLIC BUILDINGS. An experienced architect and surveyor, on the 19th of February, 1879, prepared, and presented to Gen. Meigs, Quartermaster-General, the estimate which follows of the cost of various public and private buildings in this country, the comparison being by cubic feet, external dimensions: Sub-Treasury and Post-Office, Boston, Mass. United-States building, Des Moines, Io. United-States building, Knoxville, Tenn. $2,080,507 1,500,000 271,081 381,900 221,437 398,847 Add to this the United-States National Museum, fire proof building, at Washington, D.C. 250,000 |