210 MR W. GORDON AND MR G. H. GULLIVER ON 
TABLE VII. 
Extension or Bars or Dirrerent Wipras, Measurep uron Lenerus Proportional to »/ARpA, 
Extension per cent. on a Length equal to 
Nominal Width. Width 
Inches. Thickness’ 
»/Area. 2 JArea. | 5 /Area. | 10 /Area. | 15 /Area, 
$ 1:76 59°0 50:0 B07 28°7 25°3 
1 3°81 5972 50-0 36°6 28°8 2am 
1} 5:64 61:6 52:2 38°7 30°7 26°8 
D (O50 65-0 53°8 39°3 30°8 26°8 
24 SA ay// 68:8 55:7 38°4 29°8 26°0 
3 11:14 64:7 52-2 36°8 28°6 24°6 
3h a 13:32 67°8 54:0 Bg 286 24:3 
4 15°39 67°6 595'0 38°4 29°8 25°6 
70 
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WIDTH 
THICKNESS 
Fic. 11.—Variation of extension of flat steel test-pieces with change in the ratio of width to thickness from 2 to 16, a 
constant thickness of 4 inch, and gauge-lengths of s/area to 15,/area. 
