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A TABLE

Containing the Weight of a Square Foot of Malleable Iron, Copper, and Lead, in lbs. Avoirdupois from 1 to 1 inch in thickness, advancing by .

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For finding the Weight of Malleable Iron, Copper, and Lead Pipes, 12 inches long, of various thicknesses, and any diameter required.

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Rule.--Multiply the circumference of the pipe, in inchies, by the numbers opposite the thickness required, and by the length, in feet; the product is the weight, in avoirdupois. lbs., nearly.

EXAMPLE.—Required the weight of a copper pipe 12 feet long, 15 inches in circumference, į and 5 of an inch in thickness.

.7258 x 15= 10.817 x 12= 130.644 lbs. nearly.

A TABLE

Of the Weight of a Lineal Foot of Round and Square

Bar Iron, in Avoirdupois lbs. from to 6 inches, and advancing by an I.

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0.36 0.65 1.01 1.46 1.99 2.59 3.30 4.07 4.92 5.86 6.87 7.97 9.15 10.41 11.75 13.17 14.67 16.26 17.93 19.60 21.50 23.41 25.40

0.47 0.83 1.32 1.86 2.54 3.31 4.20 5.17 6.26 7.45 8.75 10.15 11.65 13.25 14.96 16.17 18.69 20.70 22.82 25.05 27.38 29.80 32.35

27.48
29.63
31.87
34.18
36.58
39.06
41.62
44.26
46.99
49.79
52.68
55.64
58.69
61.82
65.04
68.33
71.69
75.15
78.69
82.30
86.01
89.79
93.65

34.98 37.73 40.57 43.52 46.57 49.73 52.99 56.76 59.82 63.40 67.07 70.85 74.73 78.71 82.80 87.00 91.29 95.69 100.19 104.80 109.50 114.32 119.23

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A TABLE

Of the Weight of Cast-iron Balls, in Pounds Avoirdu

pois; from 1 to 12 inches diameter, and advancing by an eighth

Inches. Lbs. A Parts.

Inches. Lbs. & Parts. || Inches. Lbs. & Parts.

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.37 .47 .59 .74 .91 1.10 1.32 1.57 1.84 2.15 2.49 2.86 3.27 3.72 4.20 4.72 5.29 5.80 6.56 7.26 8.01 8.81 9.67 10.57 11.53 12.55 13.62

44555555556666666677777778888

14.76 15.95 17.12 18.54 19.93 21.39 22.91 24.51 26.18 27.91 29.72 31.64 33.62 35.67 37.80 40.10 42.35 44.74 47.21 49.79 52.47 55.23 58.06 60.04 64.09 67.25 70.49 73.85 77.32 80.88

93 97 10 103 104 103 10 10 10$ 103 11 113 114 113

84.56 88.34 92.24 96.26 100.39 104.62 108.98 113.46 118.06 122.77 127.63 132.60 137.71 112.91 148.28 153.78 159.40 165.16 .171.05 177.10 183.29 189.60 196.10 202.67 209.43 216.32 223.40 230.57 237.94

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A TABLE of the Weight of Cast-iron Pipes 12 inches long, in lbs.

Avoirdupois.

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Lbs. 6.9 8.8 10.6 12.5 14.4

Lbs.

9.9 12.3 14.8 17.3 19.8

3
34

22.3

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19.3
22.4
25.5
28.6 35.3
31.7 39
34.8 42.7
37.7 46.4
41 50.2

59.6
44.2 1 54 64
47.2

57.2 68.3
50.3 61.3 72.6

65 77
68.7

81.3
72.5 85.6
76.2 90
79.9 94.3
83.6 98.6
87.3 103
91.1 107.3
94.8 111.7

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89 94.2 99.1 104 109 114 119 124 129

Note.- The first column is the width of the pipes, expressed in inches and parts of an inch ; and the remaining columns are the weights of the pipes, under the different thicknesses in which they are placed.

N.BTwo flanges are generally reckoned equal to one foot of pipe.

Proportions of Cement for Cast Iron. To sixteen parts of cast iron borings add two parts of sal-ammoniac and one part flour of sulphur. When to be used, take one part of the above and twenty parts of borings, which mix with water to a proper consistence.

A TABLE Containing some of the Properties of various Bodies.

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A TABLE Of the Specific Gravity of Water at different l'empe

ratures, that at 62 being taken us unity.

70°F.
68
66
64
62
58
56
54

.99913 .99936 .99958 .99980 1. 1.00035 1.00050 1.00064

52°F.
50
48
46
44
42
40
38

1.00076 1.00087 1.00095 1.00102 1.00107 1.00111 1.00113 1.00115

The difference of temperatures between 62° and 39° where water attains its greatest density, will vary the bulk of a gallon rather less than the third of a cubic inch.

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