Page images
PDF
EPUB
[blocks in formation]

1 Ton of Westmoreland slates will cover 2 squares.
1 Ton of Welch

rag
will cover

11 to 2 1000 Duchess slates will cover

10 1000 Countess slates will cover

7 1000 Ladies slates will cover

41 1000 Doubles will cover

2; 1000 Tavistock slates will cover

23 A square of Westmoreland or Welch rag slating will weigh

10 cwt. A square of Duchess, Countess, or Ladies slating will weigh 6 cwt.

ft. Welch slates, called Doubles, average 1 l by 0 6 Ladies

1 3-08 Countesses

1 8-0 10

ft. in

Welch slates, called Duchesses

Rags
Queens
Imperials
Patent Slates

in. ft. D 2 O by 1 0 3 0-2 0 3 0 - 2 0 2 6-2 0 2 62 0

XXI.-Gravel. 27 Heaped bushels, one load. A yard cube of solid gravel, containing 18 heaped bushels

before digging, will produce 27 heaped bushels when dug.

XXII.—Night Soil. 18 Cube feet, one ton. 45 Cube feet, 23 tons; being the quantity contained in

each load, the carts being usually made 6 feet long, 3 feet 3 inches wide, and 2 feet 4 inches deep.

XXIII.-Carpenter. 100 Feet superficial, one square of boarding, flooring, &c. 50 Cube feet, one load of timber. 40 Cube feet, one ton of oak timber. 120 Deals make one hundred. 1 Hundred (120) 12 feet 24 inch deals, 9 inches wide,

equal to 4 loads of timber, each deal containing

I foot 10 inches cube. | Hundred (120) 12 feet 3 inch deals, 9 inches wide,

equal to 5 loads of timber, each deal containing 2 feet 3 inches cube.

XXIV.- Weight of Roof Covering.

cwt.

1 Square pan-tiling will weigh
1 Square plain tiling
1 Square Duchess, Countess, or Ladies slating
1 Square Welch rag or Westmoreland slating ..
1 Square lead covering, 71b. to the foot superficial
1 Square copper covering, 16 ounces to the foot

superficial

7월 141

6 10 61

1

XXV.- Weight of Materials.

tons. cwt

64 Cube feet of fir timber
39 Cube feet of oak
51 Cube feet of beech
60 Cube feet of elm
45 Cube feet of ash
34 Cube feet of mahogany
35 Deals 12 feet long, 2} inches thick
15 Cube feet of Portland
13 Cube feet of marble
20 Cube feet of chalk
55 Feet superficial of Purbeck paving, three

inches thick
70 Feet superficial of Yorkshire paving, 21

inches thick 24 Cube feet of sand 18 Cube feet of earth 17 Cube feet of clay

1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0

0.

[ocr errors]

1 0

1 0 1 0 1 0 1 0

tons. cwt.

36 Cube feet of water 450 Stock-bricks 1000 Stock-bricks

1 Rod of brickwork
1000 Plain tiles
1000 Pan-tiles
100 Foot paving tiles

100 Ten-inch paving tiles
Bar Iron, 1 inch square, weight, per foot run
Ditto, 14 inch square
Ditto, 1 inch round ditto
Ditto, 11

1 0 1 0 2 4 13 0 1 1 2 2 0 11 0 73 31b. 607 7 8 2 10 5 14

[ocr errors]

XXVI.—Specific Gravity and Weight of Materials.

[merged small][ocr errors][ocr errors]

1000 or 62 8 550 or

1 Cube foot of water
] Cube foot of fir
1 Cube foot of elm
1 Cube foot of beech
1 Cube foot of maple
1 Cube foot of ash
1. Cube foot of oak
1 Cube foot of mahogany
1 Cube foot of sand
1 Cube foot of chalk
1 Cube foot of common earth
1 Cube foot of brick
1 Cube foot of clay
1 Cube foot of common stone

34 6 600 or 37 8 700 or

43 12 755 or 47 3 800 or

50 0 925 or 57 13 1063 or 66 7 1520 or

95 0 1793 or 112 1 1984 or 124 0 2000 or 125 0 2160 or 135 0 2500 or 156 4

[merged small][ocr errors][merged small][merged small][merged small]

Lineal or Running Measure regards only Length, but has

no regard to the Breadth or Thickness. 12 Inches, one foot. 3 Feet, one yard.

5} Yards, one rod or pole. 1760 Yards, one mile. 5280 Feet, one mile.

Superficial or Square Measure regards the Length and

Breadth.
144 Square inches, one square foot.

2724 Square feet, one square rod or pole. 43560 Square feet, or 4840 square yards, or 160 square

poles, one square acre. 9 Square feet, one square yard. 0 Square feet, 1 square of flooring, tiling, slating, &c.

« EelmineJätka »