ESTIMATES OF WOBK.

527

1783. In one foot superficial of wall, ^ brick in thickness, there will be fivebricks; 1 brick in thickness, 11 bricks; 1J brick thick, 16 bricks; 2 bricksthick, 23 bricks. In three feet superficial, ^ brick thick, there will be 16 bricks ;1 brick thick, 33 ; 1^ thick, 49 ; 2 bricks, 66. In five feet superficial, | brickthick, 27 bricks ; 1 thick, 55 ; 1^ thick, 82 ; 2 thick, 110. In ten feet super-ficial, ^ thick, 55 ; 1, 110 ; 1^, 165 ; 2, 220 bricks. In twenty feet superficial,4 brick thick, 110 ; 1, 22 ; 1^, 330; 2, 441. In thirty feet superficial, 165 ;1, 330; 1J, 496; 2, 661. In fifty feet superficial, £ brick thick, 275 bricks;

1, 551; 1^, 827 ; 2, 1102. In seventy feet superficial, 386 ; 1, 772 ; 1^, 1158;

2, 1544. In ninety feet superficial, £, 496 ; 1, 992 ; 14, 4488 ; 2, 1985. In one

hundred feet superficial, 551; 1, 1102 ; 1£, 1654; 2, 2205.

1784. One rod of brickwork—brick and half standard—will take, allowingfor waste, 4500 bricks of the usual dimensions, 8f inches long, 4^ broad, and21 thick.

1785. The weight of 1000 bricks of above dimensions may be taken at 21-tons.

1786. The weight of 1 rod of reduced brickwork, 272 feet superficial, stand-ard thickness of brick and half, will be about 13 tons ; this includes mortar and'cement.

1787. Facings in brickwork estimated by the “ foot superficial.”

1788. Rubbed and Gauged Work in Mortar (brickwork) estimated by the “footrun ; ” do. in putty, by the “foot superficial.”

1789. Brick Drains estimated by the “foot run.”

1790. Brick-Nogging by the “yard superficial.” To make 1 yard of brick-nogging it will take 30 bricks on edge, and 45 on the flat.

1791. Brick-Paving by the square yard. 36 paving-bricks laid flat will berequired to pave 1 yard surface ; 82 on the edge. The size of a paving-tile is9 inches long, 4J broad, If thick; the weight of each about 3 lb. 13 ounces.It will take 36 stock-bricks laid flat, and 52 on edge, to pave a yard. 9 tiles1 foot square, and 13 10-incli tiles go to the yard. Of Dutch clinkers laid on edge140 will be required to pave a yard, 125 laid flat, 136 laid herring-bone fashion.The size of a Dutch clinker is 64 inches long, 3 inches wide, and 1| inch thick,its weight about 1| lb. The size of a “foot paving-tile ” is 11J inches square,its thickness 1^ inches, and weight 12f lb. The size of a “ ten-inch paving-tile ” is 9J inches square, its thickness 1 inch, and its weight 8£ lb.

1792. Section Third — Stone-Paving. —1 ton of 6-inch granite-paving willcover 4 yards superficial; a ton of 9-inch granite, 2£ yards ; a ton of pebble-paving, 4 to 4-^ yards; of ray stone, 5 to 5-| yards.

1793. Tiling is estimated by the “ square ” of 100 superficial feet. Laid toa 6-inch gauge, it will take 768 plain-tiles to “ one square” of 100 feet; to a7-inch gauge, 655; to an 8-inch, 576. A “pan-tile” is 10^ inches long, 6fwide, § of an inch in thickness, and weighs 37 ounces. Laid to a gauge of 10inches, it will take 180 pan-tiles to make a “square ;” to a gauge of 11 inches,160; and to a gauge of 12 inches, 150 to the square. The length of a“ pan-tile ” is 13| inches, its breadth 9£, and thickness £ inch, its weight75 ounces.

1794. Mortar. —A “ 2 load” is 7 cubic feet, or 21 striked bushels. To makeit, there are required 9 bushels of lime, and 1 cubic yard of sand. A “ hod ”of mortar is equal to 1134 cubic inches, and will lay or set 100 bricks of theordinary dimensions. The size of a hod is 9 inches by 9, and 14 inches long ;it will carry 20 bricks of the ordinary dimensions. One “ rod ” will take 184