11 |20,000|2.24|0.36|2.25|0.37|0.365||20,000 |2.29|0.46|2.33|0.47|0.465 12 |22,000|2.28|0.42|2.28|0.40|0.410||22,000 |2.34|0.51|2.39|0.53|0.520 13 |24,000|2.32|0.46|2.32|0.44|0.450||24,000 |2.39|0.56|2.43|0.57|0.565 14 |26,000|2.36|0.50|2.36|0.48|0.490||26,000 |2.44|0.61|2.48|0.62|0.615 15 |28,000|2.40|0.54|2.39|0.51|0.525||28,000 |2.49|0.66|2.53|0.67|0.685 16 |30,000|2.43|0.57|2.44|0.56|0.565||30,000 |2.55|0.72|2.58|0.72|0.720 17 |32,000|2.48|0.62|2.48|0.60|0.610||32,000 |2.61|0.78|2.65|0.79|0.785 18 |34,000|2.52|0.68|2.53|0.65|0.655||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|0.260||14,000   |2.25|0.39|2.24|0.37|0.380