Table 109.-WEIGHT OF LEAD AND COMPOSITION GAS PIPES.

Table 110.-WEIGHT PER YARD, OF BLOCK-TIN TUBES.

Table 111.-WEIGHT OF GALVANIZED CORRUGATED-IRON SHEETS.

Table 112.-WEIGHT OF GALVANIZED CORRUGATED IRON SHEETS.

Table 113.-WEIGHT OF I FOOT IN LENGTH OF ROUND AND SQUARE, WROUGHT-IRON AND STEEL BARS.

5

5

16

16

8

I

Table 114.-WEIGHT OF I FOOT IN LENGTH OF FLAT WROUGHT-IRON AND STEEL BARS, HOOP IRON AND CHISEL STEEL.

2.2 2.95 335 4.2 3.8 5'7 4'2 256 2:25 299 3434°28 385 5.78 4 28 640 470

Table 115.-WEIGHT OF 100 FEET IN LENGTH OF IRON AND STEEL WIRE.

Table 116.-WEIGHT OF 12 INCHES SQUARE OF ROLLED WROUGHT-IRON PLATES AND SHEET-IRON, THE THICKNESS BEING MEASURED BY THE SHEET GAUGE B. G. 1884, AND ALSO BY THE NEW IMPERIAL STANDARD WIRE-GAUGE.

2.22 0556 2.30 056 18 I'97 0495

46

1'91 *048 47

19

176 0440

1.60 *040 48

20

I'57 0392

144 036 49 054

21

*080 '0020

061 00152 064 0016 00135 *048 0012 I'40 '0349 1.28 *032 50 048 00120 *040 '0010

WEIGHT OF SIEMENS' MILD-STEEL BOILER-PLATES.

In.

Ft. In.

Ft.

Cwt. Qrs. Lbs.

Steel-plate thick, 3 0 wide, and 23 long, weighs 9 I 21

077 00192 096 0024 068 00170

Table 117.-WEIGHT OF 12 INCHES SQUARE OF ROLLED SHEET-COPPER AND SHEET-BRASS IN LBS. AND OUNCES, AND ALSO IN LBS. AND DECIMAL PARTS; THE THICKNESS BEING MEASURED BY THE NEW IMPERIAL STANDARD WIRE-Gauge.

Sheet-Copper weighs approximately ounce per

For kilogrammes per square m-tre, divide the weight of copper in pounds per square foot by 205.

=

inch per square foot. Therefore to find the weight of sheet-copper when in stated decimals of an inch, subtract onefourth of the number of thousands of an inch. For instance, the weight of a sheet of copper 064 inch thick is 064 ÷ 4 = '016, and 064 - 016 48 ounces per square foot. To find the thickness in thousands of an inch, add one-third to the number of ounces per square foot. For instance, the thickness of a plate weighing 48 ounces per square foot is = 48316, and 48 + 16 = 64, and = '064 thousands.

=

1.38

I'21

1'04

O'95