21 |40,000|2.65|0.79|2.67|0.79|0.790||
22 |42,000|2.70|0.84|2.73|0.85|0.845||
23 |44,000|2.75|0.89|2.77|0.89|0.890||
||
37,500 lb., First Crack; ||
45,900 lb., Failed. ||
||
At Elastic Limit: Load, 22,000 lb.; ||At Elastic Limit: Load, 20,000 lb.;
deflection, 0.41 in.; || deflection, 0.465 in.;
_S_, 2,975 lb. || _S_, 2,975 lb.
||
Maximum: Load, 45,900 lb.; ||Maximum: Load, 38,000 lb.;
deflection,.....; || deflection,.....;
_S_, 6,209 lb. || _S_, 5,540 lb.
||
_E_ = 1,575,000 lb. || _E_ = 1,383,000 lb.
=========================================================================

[Footnote B: First crack.]


TABLE 4.--(_Continued._)--LOAD AND DEFLECTION LOG. BEAM II.

Columns in table:

A: Load, in pounds.
B: Reading.
C: Total deflection.
D: Mean total deflection.