8 |14,000|2.22|0.25|1.61|0.24|0.245||14,000 |1.62|0.31|1.57|0.32|0.315
9 |16,000|2.25|0.28|1.65|0.28|0.280||16,000 |1.68|0.37|1.65|0.40|0.385
10 |18,000|2.29|0.32|1,69|0.32|0.320||18,000 |1.78|0.41|1.71|0.46|0.435
11 |20,000|2.32|0.35|1.73|0.36|0.355||20,000 |1.99|0.68|1.97|0.72|0.700
12 |22,000|2.36|0.39|1.78|0.41|0.400||
13 |24,000|2.39|0.42|1.83|0.46|0.440||
14 |26,000|2.42|0.45|1.85|0.48|0.465||
15 |28,000|2.47|0.50|1.90|0.53|0.515||
16 |30,000|2.50|0.53|1.95|0.58|0.565||
17 |32,000|2.54|0.57|1.99|0.62|0.595||
18 |34,000|2.59|0.62|2.04|0.67|0.645||
19 |36,000|2.63|0.66|2.09|0.72|0.690||
20 |38,000|2.68|0.71|2.17|0.80|0.755||
21 |40,000|2.73|0.76|2.21|0.84|0.800||
22 |42,000|2.80|0.83|2.30|0.93|0.880||
23 |44,000|2.90|0.93|2.40|1.03|0.980||
||
25,000 lb. Slight Crack; ||20,000 lb. First Crack;
47,000 lb. Failed. ||22,050 lb. Failed.
||
At Elastic Limit: Load, 22,000 lb.; ||At Elastic Limit: Load, 14,000 lb.;
deflection, 0.40 in.; || deflection, 0.315 in.;
S, 3,090 lb. || S, 1,998 lb.
||
Maximum: Load, 47,000 lb.; ||Maximum: Load, 22,050 lb.;
deflection,.......; || deflection,.......;
S, 6,610 lb. || S, 3,145 lb.
||
E = 1,670,000 lb. || E = 1,382,000 lb.
============================================================
=============
=============
TABLE 4.—(Continued.)—LOAD AND DEFLECTION LOG. BEAM VI.
Columns in table:
A: Load, in pounds.
B: Reading.
C: Total deflection.
D: Mean total deflection.
Date: February 12th, 1909. Date: February 13th, 1909. l = 12 ft.; l = 12 ft.; b (mean) = 5.5 in.; b (mean) = 5.87 in.; h (mean) = 15.75 in.; h (mean) = 15.62 in.; c = 7.88 in. c = 7.81 in. Time = 40 min.
=======================================================
================== | P | DEFLECTION, IN INCHES. || P | DEFLECTION, IN INCHES. No.+------+----+----+----+----+-----++---------+----+----+--
--+----+----- | A | B | C | B | C | D || A | B | C | B | C | D ---+------+----+----+----+----+-----++---------+----+----+--
--+----+----- 1 | 0 |1.22| 0 |1.30| 0 | 0 || 0 |1.28| 0 |1.30| 0 | 0 2 | 2,000|1.26|0.04|1.34|0.04|0.04 || 2,000 |1.30|0.02|1.35|0.05|0.035 3 | 4,000|1.29|0.07|1.38|0.08|0.075|| 4,000 |1.36|0.08|1.39|0.09|0.085 4 | 6,000|1.33|0.11|1.42|0.12|0.115|| 6,000 |1.40|0.12|1.44|0.14|0.130 5 | 8,000|1.37|0.15|1.47|0.17|0.160|| 8,000 |1.43|0.15|1.47|0.17|0.160 6 |10,000|1.42|0.20|1.51|0.21|0.205||10,000 |1.47|0.19|1.51|0.21|0.200 7 |12,000|1.45|0.23|1.55|0.25|0.240||12,000 |1.51|0.23|1.56|0.26|0.245 8 |14,000|1.50|0.28|1.59|0.29|0.285||14,000 |1.55|0.27|1.60|0.30|0.285 9 |16,000|1.54|0.32|1.63|0.33|0.325||16,000 |1.59|0.31|1.64|0.34|0.325