Page:Philosophical Transactions - Volume 145.djvu/259

Rh

Experiment No. 1. Experiment No. 2. Experiment No. 3. Experiment No. 4.

inches. inches. inches. inches.

Depth. 2·015 2·02 2·073 2·040

Thickness .. ·975 ·98 1·030 ·990

Area of section .................. 1·965 1·98 2·135 2·020

Weight applied, lbs. Deflection. Deflection. Deflection. Deflection.

40 ·015 ·013 ·014 ·014

376 ·145 ·115

600 ·203

712 ·280 ·233 ·264 ·244

936 ·330

1160 ·490 ·420 ·397 ·414

1608 ·725 ·625 ·579 ·614

1664 Broke ·755 ·655

1720 ·680 ·629 ·659

1832 ...... ·737 ·679 ·734

1888 ...... Broke ·699 ·764

1916 -.. A... Broke

1944 ...... ·734

2000 ... ... ·762

2028 ..... ·774

2056 ... ... .' .. ... ·789

2084 ... ... ... ... Broke

Breaking weight, lbs. ......... 1664 1888 2084 1916

Deflection with nine-tenths of breaking weight, inches ·643 ·667 ·699 ·670

Experiment No. 1. Experiment No. 2. Experiment No. 3. Experiment No. 4.

inches. inches. inches. inches.

Total depth. 2·54 2·53 2·49 2·50

Depth between upper and lower ribs. ·56 ·55 ·51 ·55

Area of top rib. 1·00 1·00 ·97 ·98

Area of bottom rib 1·01 1·00 ·99 ·97

Weight applied, lbs. Deflection. Deflection. Deflection. Deflection.

40 ·009 ·007 ·007 ·007

712 ·132 ·134 ·137

804 ·199

1292 ·304

1516 ·302 ·319 ·312

1740 ·414

1852 ·372

1964 ·489 ·397 ·426 ·433

2076 ·427

2188 Broke ·445 ·479 ·487

2300 .... ·479 ·526 ·532

2412 ...... ·512 Broke ·550

2524 ...... ·542 ...... Broke

2636 ...... ·575

2748 ...... Broke

Breaking weight, lbs. ......... 2188 2748 2412 2524

Deflection with nine-tenths of breaking weight, inches ·489 ·532 ·482 ·516