Transactions of the American Society of Civil Engineers, vol. LXX, Dec. 1910 / Tests of Creosoted Timber, Paper No. 1168

by W. B. Gregory

TABLE 4.—(Continued.)—Load and Deflection Log. Beam II.

Date: February 20th, 1909. l = 12 ft.; b (mean) = 6.38 in.; h (mean) = 15.81 in.; c = 7.91 in. Time = 47.5 min							Date: — l = 12 ft.; b (mean) = 6.41 in.; h (mean) = 16.41 in.; c = 8.20 in.
No.	P	Deflection, in Inches.					P	Deflection, in Inches.
	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.
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
9	16,000	1.95	0.30	1.98	0.30	0.300	16,000	2.30	0.44	2.29	0.42	0.430
10	18,000	1.98	0.33	2.02	0.34	0.335	18,000[C]	2.35	0.49	2.35	0.48	0.485
11	20,000	2.03	0.38	2.06	0.38	0.380	20,000	2.44	0.58	2.42	0.55	0.565
12	22,000	2.07	0.42	2.10	0.42	0.420	22,000	2.54	0.68	2.54	0.67	0.675
13	24,000	2.11	0.46	2.14	0.46	0.460	25,040	Failed
14	26,000	2.15	0.50	2.18	0.50	0.500
15	28,000	2.18	0.53	2.22	0.54	0.535
16	30,000	2.23	0.58	2.26	0.58	0.580
17	32,000	2.27	0.62	2.30	0.62	0.620
18	34,000	2.32	0.67	2.35	0.67	0.670
19	36,000	2.37	0.72	2.40	0.72	0.720
20	38,000	2.42	0.77	2.45	0.77	0.770
21	40,000	2.48	0.83	2.50	0.82	0.825
22	42,000	2.53	0.88	2.56	0.88	0.880
23	43,450	Fracture.
24	45,710	Failed.
At Elastic Limit: Load, 20,000 lb.; deflection, 0.38 in.; S, 2,722 lb.							At Elastic Limit: Load, 16,000 lb.; deflection, 0.43 in.; S, 1,999 lb.
Maximum: Load, 43,450 lb.; deflection,.....; S, 5,918 lb.							Maximum: Load, 25,040 lb.; deflection,.....; S, 3,130 lb.
E = 1,562,000 lb.							E = 979,000 lb.

[C] First crack.

TABLE 4.—(Continued.)—Load and Deflection Log. Beam III.

Date: February 13th, 1909. l = 12 ft.; b (mean) = 5.88 in.; h (mean) = 15.63 in.; c = 7.82 in.							Date: — l = 12 ft.; b (mean) = 5.88 in.; h (mean) = 15.9 in.; c = 7.95 in. Time = 45 min.
No.	P	Deflection, in Inches.					P	Deflection, in Inches.
	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.
1	0	1.23	0	1.06	0	0	0	1.67	0	1.63	0	0
2	2,000	1.27	.04	1.10	0.04	0.040	2,000	1.70	0.03	1.68	0.05	0.040
3	4,000	1.32	0.09	1.13	0.07	0.080	4,000	1.72	0.05	1.72	0.09	0.070
4	6,000	1.37	0.14	1.17	0.11	0.125	6,000	1.82	0.15	1.78	0.15	0.150
5	8,000	1.42	0.19	1.22	0.16	0.175	8,000	1.86	0.19	1.82	0.19	0.190
6	10,000	1.47	0.24	1.26	0.20	0.220	10,000	1.90	0.23	1.87	0.24	0.235
7	12,000	1.51	0.28	1.31	0.25	0.265	12,000	1.97	0.30	1.92	0.29	0.295
8	14,000	1.55	0.32	1.35	0.29	0.305	14,000	2.00	0.33	1.98	0.35	0.340
9	16,000	1.60	0.37	1.40	0.34	0.355	16,000	2.03	0.36	2.04	0.41	0.385
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; 45,130 lb. Failed.							22,000 lb. First Crack; 35,190 lb. Failed.
At Elastic Limit: Load, 24,000 lb.; deflection, 0.535 in.; S 3,608 lb.							At Elastic Limit: Load, 21,000 lb.; deflection, 0.515 in.; S, 3,054 lb.
Maximum: Load, 45,130 lb.; deflection,.....; S 6,785 lb.							Maximum: Load, 35,190 lb.; deflection,.....; S 5,120 lb.
E = 1,489,000 lb.							E = 1,288,000 lb.

TABLE 4.—(Continued.)—Load and Deflection Log. Beam IV.

Date: February 16th, 1909. l = 12 ft.; b (mean) = 6.0 in.; h (mean) = 15.43 in.; c = 7.71 in.							Date: February 10th, 1909. l = 12 ft.; b (mean) = 6.12 in.; h (mean) = 15.87 in.; c = 7.93 in. Time = 30 min.
No.	P	Deflection, in Inches.					P	Deflection, in Inches.
	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.	Load, in pounds.	Reading.	Total deflection.	Reading.	Total deflection.	Mean total deflection.
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; 38,425 lb. Failed.							28,360 lb. Cracked; 35,500 lb, Failed.
At Elastic Limit: Load, 22,000 lb.; deflection, 0.465 in.; S 3,320 lb.							At Elastic Limit: Load, 22,000 lb.; deflection, 0.66 in.; S, 3,090 lb.
Maximum: Load, 38,425 lb.; deflection,.....; S 5,810 lb.							Maximum: Load, 35,500 lb.; deflection,.....; S 4,983 lb.
E = 1,601,000 lb.							E = 1,017,000 lb.