55||34,000[B]|2.68|0.85|2.70|0.84|0.845
19 |36,000|2.56|0.70|2.56|0.68|0.690||36,000 |2.74|0.91|2.78|0.92|0.915
20 |38,000|2.61|0.75|2.62|0.74|0.745||38,000 | Broke.
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.

Date: February 20th, 1909. Date: --
_l_ = 12 ft.; _l_ = 12 ft.;
_b_ (mean) = 6.38 in.; _b_ (mean) = 6.41 in.;
_h_ (mean) = 15.81 in.; _h_ (mean) = 16.41 in.;
_c_ = 7.91 in. _c_ = 8.20 in.
Time = 47.5 min.

=========================================================================
| P | DEFLECTION, IN INCHES. || P | DEFLECTION, IN INCHES.
No.+------+----+----+----+----+-----++---------+----+----+----+----+-----
| A | B | C | B | C | D || A | B | C | B | C | D
---+------+----+----+----+----+-----++---------+----+----+----+----+-----
1 | 0 |1.65| 0 |1.68| 0 | 0 || 0 |1.86| 0 |1.87| 0 | 0
2 | 2,000|1.69|0.04|1.72|0.04|0.040|| 2,000 |1.91|0.05|1.92|0.05|0.05
3 | 4,000|1.73|0.08|1.77|0.09|0.085|| 4,000 |1.98|0.12|1.98|0.11|0.115
4 | 6,000|1.76|0.11|1.80|0.12|0.115|| 6,000 |2.05|0.19|2.02|0.15|0.170
5 | 8,000|1.80|0.15|1.83|0.15|0.150|| 8,000 |2.07|0.21|2.08|0.21|0.210
6 |10,000|1.83|0.18|1.86|0.18|0.180||10,000 |2.13|0.27|2.13|0.26|0.265
7 |12,000|1.87|0.22|1.90|0.22|0.220||12,000 |2.18|0.32|2.18|0.31|0.315
8 |14,000|1.91|0.26|1.94|0.26|0.