19 |36,000|2.37|0.72|2.40|0.72|0.720||
20 |38,000|2.42|0.77|2.45|0.77|0.770||
21 |40,000|2.48|0.83|2.50|0.82|0.825||
22 |42,000|2.53|0.88|2.56|0.88|0.880||
23 |43,450| Fracture. ||
24 |45,710| Failed. ||
||
At Elastic Limit: Load, 20,000 lb.; ||At Elastic Limit: Load, 16,000 lb.;
deflection, 0.38 in.; || deflection, 0.43 in.;
_S_, 2,722 lb. || _S_, 1,999 lb.
||
Maximum: Load, 43,450 lb.; ||Maximum: Load, 25,040 lb.;
deflection,.....; || deflection,.....;
_S_, 5,918 lb. || _S_, 3,130 lb.
||
_E_ = 1,562,000 lb. || _E_ = 979,000 lb.
==========================================================================

[Footnote C: First crack.]


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

Columns in table:

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