Page:Timber and Timber Trees, Native and Foreign.djvu/77

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Table XI.

Specimens as in Table X., weighted with 400 lbs.
Supports, apart.		3 Feet.	4 Feet.	5 Feet.	6 Feet.
No.	Sp. gr.	Inches.	Inches.	Inches.	Inches.
37	795	0.375	0.625	1.250	2.125
38	785	0.312	0.625	1.125	2.000
39	782	0.250	750	1.187	2.125
40	775	0.437	0.625	1.312	2.000
Total	3.137	1.374	2,625	4.874	8.250
Average.	0.784	0.343	0.656	1.218	2.062

Further experiments with reference to deflections were made upon a piece of English Oak, 2 × 2 × 84 inches, specific gravity 792, with the following result:—

Table XII.

Weighted with 300 lbs.
Supports, apart.	3 Feet.	4 Feet.	5 Feet.	6 Feet.
No.	Inches.	Inches.	Inches.	Inches.
41	.125	.375	.625	.875

 

Table XII.

Weighted with 300 lbs.
Supports, apart.	3 Feet.	4 Feet.	5 Feet.	6 Feet.
No.	Inches.	Inches.	Inches.	Inches.
42	.250	.500	.875	1.125