10 |18,000|1.64|0.41|1.44|0.38|0.395||18,000 |2.10|0.43|2.09|0.46|0.445 11 |20,000|1.68|0.45|1.49|0.43|0.440||20,000 |2.13|0.46|2.14|0.51|0.485 12 |22,000|1.72|0.49|1.54|0.48|0.485||22,000 |2.20|0.53|2.20|0.57|0.550 13 |24,000|1.78|0.55|1.58|0.52|0.535||24,000 |2.26|0.59|2.26|0.63|0.610 14 |26,000|1.82|0.59|1.64|0.58|0.585||26,000 |2.31|0.64|2.32|0.69|0.665 15 |28,000|1.88|0.65|1.68|0.62|0.635||28,000 |2.38|0.71|2.40|0.77|0.740 16 |30,000|1.92|0.69|1.73|0.67|0.680||30,000 |2.42|0.75|2.47|0.84|0.795 17 |32,000|1.97|0.74|1.79|0.73|0.735||32,000 |2.49|0.82|2.55|0.92|0.870 18 |34,000|2.02|0.79|1.85|0.79|0.790||34,000 |2.58|0.91|2.62|0.99|0.950 19 |36,000|2.07|0.84|1.90|0.84|0.840|| 20 |38,000|2.13|0.90|1.97|0.91|0.915|| 21 |40,000|2.20|0.97|2.03|0.97|0.970|| 22 |42,000|2.27|1.04|2.11|1.05|1.045|| 23 |44,000|2.37|1.14|2.21|1.15|1.145|| || 39,100 lb.  First Crack; ||22,000 lb.  First Crack; 45,130 lb.  Failed. ||35,190 lb.  Failed. || At Elastic Limit:  Load, 24,000 lb.; ||At Elastic Limit:  Load, 21,000 lb.; deflection, 0.535 in.; || deflection, 0.515 in.; S 3,608 lb. || S, 3,054 lb. || Maximum:  Load, 45,130 lb.; ||Maximum:  Load, 35,190 lb.; deflection,.....; || deflection,.....; S 6,785 lb. || S 5,120 lb. || E = 1,489,000 lb. || E = 1,288,000 lb. ============================================================
==============

TABLE 4.—­(Continued.)—­LOAD AND DEFLECTION LOG.  BEAM IV.

Columns in table: 

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

Date:  February 16th, 1909.  Date:  February 10th, 1909. l = 12 ft.; l = 12 ft.; b (mean) = 6.0 in.; b (mean) = 6.12 in.; h (mean) = 15.43 in.; h (mean) = 15.87 in.; c = 7.71 in. c = 7.93 in. 
                                         Time = 30 min.

=======================================================

==================
|   P  |  DEFLECTION, IN INCHES. ||   P     |  DEFLECTION, IN INCHES. 
No.+------+----+----+----+----+-----++---------+----+----+--

--+----+-----
|   A  | B  | C  | B  | C  |  D  ||   A     | B  | C  | B  | C  |  D
---+------+----+----+----+----+-----++---------+----+----+--

--+----+-----
1 |   0  |2.28| 0  |2.05| 0  |  0  ||   0     |1.44|  0 |1.58| 0  |  0
2 | 2,000|2.31|0.03|2.10|0.05|0.040|| 2,000   |1.50|0.06|1.64|0.06|0.06
3 | 4,000|2,34|0.06|2.14|0.09|0.075|| 4,000   |1.55|0.11|1.70|0.12|0.115
4 | 6,000|2.40|0.12|2.19|0.14|0.130|| 6,000   |1.62|0.18|1.76|0.18|0.180
5 | 8,000|2.43|0.15|2.23|0.18|0.165|| 8,000   |1.68|0.24|1.82|0.24|0.240
6 |10,000|2.47|0.19|2.28|0.23|0.210||10,000   |1.72|0.28|1.89|0.31|0.295
7 |12,000|2.51|0.23|2.32|0.27|0.250||12,000   |1.80|0.36|1.94|0.36|0.360