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XXXVIII.-TABLE,
Shewing the Weight of One Foot

in length of Square Iron Bar.

XXXIX.-TABLE,
Shewing the Weight of One Foot in

Length of Round Irou Bar.

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XL.--A TABLE,

Shewing the Weight of One Foot of Flat Bar Iron, from one

inch broad and one-eighth of an inch thick, to four inches broad and one inch thick, close hammered.

Parts of an Inch in Thickness.

Inches, and parts of an inch in breadth.

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3 1 Ib. oz. lb. oz. lb, oz. lb. z. Ib. Oz. lb. oz. lb. OZ

Ib. 0 63 0 138 1 45| 1 113 2 2 2 94 3 0 3 7 0 7 0 151 1 73 1 15 E 64 2 141 3 6 3 133 08 | 1 11 1 992 22 10 3 3 3 12 4 48 0 92 1 3 1 12 253 2 151 3 89 4 2 4 115 0 10 | 1 4 1 15 2 94 3 31 3 137 4 8 5 2 0 1181 1 632 132 12 3 7 4 3 4 141 5 9 0 12 1 8 2 4 3 0 3 12 4 8 5 41 6 0 12 1 98 2 6 3 32 4 03 4 13 5 101 6 7 0 138 1 113 2 93 3 7 4 43 5 2 6 02 6 14 ( 143 1 131 2 11] 3 103 4 9 5 786 61 7 4 0 15 1 15 2 143 3 13 4 13 5 123 6 121 7 113 1 02 03 1 4 13 5 1$ 6 2 7 23! 8 2

141 2 2 3. 4 43 5 6 6 77 88 89 1 2

63 81 101 6 124 7 1439 1 23 2 5 3 8 11 143 7 138 439

7} 1 382 73 3 11 4 15 6 237 6 | 8 103 9 145 1 4 2 91 3 13 5 2 6 7 7 11 9 0 10 5 1 51 2 11 4 03 5 6 6 118 8. 03 9 6 11 11] 1 6 2 12 4 3 5 9 6 153| 8 6 9 1211 23 1 712 14 4 5 5 127 7 4 8 111 10 2211 95 1 8 3 0 4 83 6 017 81 9 0 10 8112 02 1 9 3 13 4 104 6 3 7 12 9 54 10 144 1273 1 983 31 4 138 6 7 8 1 9 10 11 41 12 141 1 10 3 51 5 0 6 101 8 54 9 153 11 101 13 5$ 1 113 3 7 5 21 6 14 8 9 10 5 12 04 13 12 5 21 10 5 15 71 20 10 25 123 30 15 36 13 41 4

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31 3 4 12

Cast Iron according to the above Thickness.

12

4 13 9 105 14

8 119 5324 2829 0 33 133 38 10%

XLI.-A TABLE,

Shewing the Weight per Foot superficial of Lead, from one.

sixteenth of an inch thick to one inch thick.

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XLII.-A TABLE,

Shewing the weight of a superficial foot of cast iron, from to

2 inches thick.

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XLIII.-A TABLE,

Shewing how many feet superficial a hundred-weight of Sheet

Lead will cover, on a flat roof, or gutter, &c., from 4 ib. to 12 lb. weight per foot; the value of each superficial foot, or square, according to the several weights ; viz. at 23d. per Ib. or ll. 5s. per cwt. for all under 7 lb. per foot superficial: and 2 d. per lb. or 11. 3s. per cwt. for 7 lb. per foot

superficial, and all above, including labour, solder, &c.

[blocks in formation]

N.B. By the above Table, any quantity of covering may be easily estimated according to the thickness of the lepo

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