Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 | Page 6

W. B. Gregory
|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 8 |14,000|2.54|0.26|2.37|0.32|0.290||14,000 |1.85|0.41|2.00|0.42|0.415 9 |16,000|2.59|0.31|2.41|0.36|0.335||16,000 |1.90|0.46|2.06|0.48|0.470 10 |18,000|2.62|0.34|2.45|0.40|0.370||18,000 |1.98|0.54|2.13|0.55|0.545 11 |20,000|2.68|0.40|2.50|0.45|0.425||20,000 |2.03|0.59|2.19|0.61|0.600 12 |22,000|2.72|0.44|2.54|0.49|0.465||22,000 |2.09|0.65|2.25|0.67|0.660 13 |24,000|2.78|0.50|2.60|0.55|0.525||24,000 |2.15|0.71|2.33|0.75|0.730 14 |26,000|2.82|0.54|2.65|0.60|0.570||26,000 |2.23|0.79|2.42|0.84|0.815 15 |28,000|2.87|0.59|2.69|0.64|0.615||28,000 |2.32|0.88|2.49|0.91|0.895 16 |30,000|2.91|0.63|2.74|0.69|0.660||30,000 |2.42|0.98|2.62|1.04|1.010 17 |32,000|2.97|0.69|2.78|0.73|0.710||32,000 |2.56|1.12|2.74|1.16|1.140 18 |34,000|3.01|0.73|2.85|0.80|0.765||34,000 |2.67|1.23|2.87|1.29|1.265 19 |36,000|3.07|0.79|2.90|0.85|0.820|| 20 |38,000|3.14|0.86|2.98|0.93|0.895|| || 34,000 lb. First Crack; ||28,360 lb. Cracked; 38,425 lb. Failed. ||35,500 lb, Failed. || At Elastic Limit: Load, 22,000 lb.; ||At Elastic Limit: Load, 22,000 lb.; deflection, 0.465 in.; || deflection, 0.66 in.; S 3,320 lb. || S, 3,090 lb. || Maximum: Load, 38,425 lb.; ||Maximum: Load, 35,500 lb.; deflection,.....; || deflection,.....; S 5,810 lb. || S 4,983 lb. || E = 1,601,000 lb. || E = 1,017,000 lb. ==========================================================================
TABLE 4.--(Continued.)--LOAD AND DEFLECTION LOG. BEAM V.
Columns in table:
A: Load, in pounds. B: Reading. C: Total deflection. D: Mean total deflection.
Date: -- Date: February 27th, 1909. l = 12 ft.; l = 12 ft.; b (mean) = 6 in.; b (mean) = 6 in.; h (mean) = 16 in.; h (mean) = 15.87 in.; c = 8 in. c = 7.94 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 |1.97| 0 |1.37| 0 | 0 || 0 |1.31| 0 |1.25| 0 | 0 2 | 2,000|2.01|0.04|1.40|0.03|0.035|| 2,000 |1.37|0.06|1.31|0.06|0.06 3 | 4,000|2.06|0.09|1.43|0.06|0.075|| 4,000 |1.41|0.10|0.36|0.11|0.105 4 | 6,000|2.08|0.11|1.47|0.10|0.105|| 6,000 |1.46|0.15|0.40|0.15|0.150 5 | 8,000|2.11|0.14|1.50|0.13|0.135|| 8,000 |1.49|0.18|0.45|0.20|0.190 6 |10,000|2.16|0.19|1.54|0.17|0.180||10,000 |1.54|0.23|1.49|0.24|0.235 7 |12,000|2.19|0.22|1.57|0.20|0.210||12,000 |1.58|0.27|1.53|0.28|0.275 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 10 |18,000|1.58|0.36|1.68|0.38|0.370||18,000 |1.62|0.34|1.69|0.39|0.365 11 |20,000|1.61|0.39|1.72|0.42|0.405||20,000 |1.66|0.38|1.74|0.44|0.410 12 |22,000|1.66|0.44|1.76|0.46|0.450||22,000 |1.71|0.43|1.80|0.50|0.465 13 |24,000|1.81|0.59|1.81|0.51|0.550||24,000 |1.77|0.49|1.84|0.54|0.515 14 |26,000|1.86|0.64|1.86|0.56|0.600||26,000 |1.83|0.55|1.90|0.60|0.575 15 |28,000|1.91|0.69|1.91|0.61|0.650||28,000 |1.90|0.62|1.97|0.67|0.645 16 |30,000|1.96|0.74|1.96|0.66|0.700||30,000 |1.97|0.69|2.02|0.72|0.705 17 |32,000|2.00|0.78|2.02|0.72|0.750||32,000 |2.12|0.84|2.10|0.80|0.820 18 |34,000|2.04|0.82|2.11|0.81|0.815||34,000 |2.20|0.92|2.16|0.86|0.885 19 |36,000|2.10|0.88|2.20|0.90|0.890||36,000 |2.29|1.01|2.24|0.94|0.975 20 |38,000|2.16|0.94|2.25|0.95|0.945||38,000 |2.39|1.11|2.32|1.02|1.065 21 |40,000|2.28|1.06|2.38|1.08|1.070|| 22 |42,000|2.38|1.16|2.42|1.12|1.140|| 23 |44,000|2.44|1.22|2.52|1.22|1.220|| 24 |46,000|2.53|1.31|2.60|1.30|1.305|| 25 |48,000|2.66|1.44|2.71|1.41|1.425|| 26 |50,000|2.78|1.56|2.87|1.57|1.565||
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