Forge Work

by William L. Ilgen

5. Decimals of an Inch for each ¹⁄₆₄th

1⁄32ds.	1⁄64ths.	Decimal	Fraction
	1	.015625
1	2	.03125
	3	.046875
2	4	.0625	1⁄16
	5	.078125
3	6	.09375
	7	.109375
4	8	.125	1⁄8
	9	.140625
5	10	.15625
	11	.171875
6	12	.1875	3⁄16
	13	.203125
7	14	.21875
	15	.234375
8	16	.25	1⁄4
	17	.265625
9	18	.28125
	19	.296875
10	20	.3125	5⁄16
	21	.328125
11	22	.34375
	23	.359375
12	24	.375	3⁄8
	25	.390625
13	26	.40625
	27	.421875
14	28	.4375	7⁄16
	29	.453125
15	30	.46875
	31	.484375
16	32	.5	1⁄2
	33	.515625
17	34	.53125
	35	.546875
18	36	.5625	9⁄16
	37	.578125
19	38	.59375
	39	.609375
20	40	.625	5⁄8
	41	.640625
21	42	.65625
	43	.671875
22	44	.6875	11⁄16
	45	.703125
23	46	.71875
	47	.734375
24	48	.75	3⁄4
	49	.765625
25	50	.78125
	51	.796875
26	52	.8125	13⁄16
	53	.828125
27	54	.84375
	55	.859375
28	56	.875	7⁄8
	57	.890625
29	58	.90625
	59	.921875
30	60	.9375	15⁄16
	61	.953125
31	62	.96875
	63	.984375
32	64	1.	1

6. Weights of Flat Rolled Steel per Linear Foot

One cubic foot weighing 489.6 pounds

Thick- ness in inches	1″	11⁄4″	11⁄2″	13⁄4″	2″	21⁄4″	21⁄2″	23⁄4″
3⁄16	.638	.797	.957	1.11	1.28	1.44	1.59	1.75
1⁄4	.850	1.06	1.28	1.49	1.70	1.91	2.12	2.34
5⁄16	1.06	1.33	1.59	1.86	2.12	2.39	2.65	2.92
3⁄8	1.28	1.59	1.92	2.23	2.55	2.87	3.19	3.51
7⁄16	1.49	1.86	2.23	2.60	2.98	3.35	3.72	4.09
1⁄2	1.70	2.12	2.55	2.98	3.40	3.83	4.25	4.67
9⁄16	1.92	2.39	2.87	3.35	3.83	4.30	4.78	5.26
5⁄8	2.12	2.65	3.19	3.72	4.25	4.78	5.31	5.84
11⁄16	2.34	2.92	3.51	4.09	4.67	5.26	5.84	6.43
3⁄4	2.55	3.19	3.83	4.47	5.10	5.75	6.38	7.02
13⁄16	2.76	3.45	4.14	4.84	5.53	6.21	6.90	7.60
7⁄8	2.98	3.72	4.47	5.20	5.95	6.69	7.44	8.18
15⁄16	3.19	3.99	4.78	5.58	6.38	7.18	7.97	8.77
1	3.40	4.25	5.10	5.95	6.80	7.65	8.50	9.35
11⁄16	3.61	4.52	5.42	6.32	7.22	8.13	9.03	9.93
11⁄8	3.83	4.78	5.74	6.70	7.65	8.61	9.57	10.52
13⁄16	4.04	5.05	6.06	7.07	8.08	9.09	10.10	11.11
11⁄4	4.25	5.31	6.38	7.44	8.50	9.57	10.63	11.69
15⁄16	4.46	5.58	6.69	7.81	8.93	10.04	11.16	12.27
13⁄8	4.67	5.84	7.02	8.18	9.35	10.52	11.69	12.85
17⁄16	4.89	6.11	7.34	8.56	9.78	11.00	12.22	13.44
11⁄2	5.10	6.38	7.65	8.93	10.20	11.48	12.75	14.03
19⁄16	5.32	6.64	7.97	9.30	10.63	11.95	13.28	14.61
15⁄8	5.52	6.90	8.29	9.67	11.05	12.43	13.81	15.19
111⁄16	5.74	7.17	8.61	10.04	11.47	12.91	14.34	15.78
13⁄4	5.95	7.44	8.93	10.42	11.90	13.40	14.88	16.37
113⁄16	6.16	7.70	9.24	10.79	12.33	13.86	15.40	16.95
17⁄8	6.38	7.97	9.57	11.15	12.75	14.34	15.94	17.53
115⁄16	6.59	8.24	9.88	11.53	13.18	14.83	16.47	18.12
2	6.80	8.50	10.20	11.90	13.60	15.30	17.00	18.70
Thick- ness in inches	3″	31⁄4″	31⁄2″	33⁄4″	4″	41⁄4″	41⁄2″	43⁄4″
3⁄16	1.91	2.07	2.23	2.39	2.55	2.71	2.87	3.03
1⁄4	2.55	2.76	2.98	3.19	3.40	3.61	3.83	4.04
5⁄16	3.19	3.45	3.72	3.99	4.25	4.52	4.78	5.05
3⁄8	3.83	4.15	4.47	4.78	5.10	5.42	5.74	6.06
7⁄16	4.46	4.83	5.20	5.58	5.95	6.32	6.70	7.07
1⁄2	5.10	5.53	5.95	6.38	6.80	7.22	7.65	8.08
9⁄16	5.74	6.22	6.70	7.17	7.65	8.13	8.61	9.09
5⁄8	6.38	6.91	7.44	7.97	8.50	9.03	9.57	10.10
11⁄16	7.02	7.60	8.18	8.76	9.35	9.93	10.52	11.11
3⁄4	7.65	8.29	8.93	9.57	10.20	10.84	11.48	12.12
13⁄16	8.29	8.98	9.67	10.36	11.05	11.74	12.43	13.12
7⁄8	8.93	9.67	10.41	11.16	11.90	12.65	13.39	14.13
15⁄16	9.57	10.36	11.16	11.95	12.75	13.55	14.34	15.14
1	10.20	11.05	11.90	12.75	13.60	14.45	15.30	16.15
11⁄16	10.84	11.74	12.65	13.55	14.45	15.35	16.26	17.16
11⁄8	11.48	12.43	13.39	14.34	15.30	16.26	17.22	18.17
13⁄16	12.12	13.12	14.13	15.14	16.15	17.16	18.17	19.18
11⁄4	12.75	13.81	14.87	15.94	17.00	18.06	19.13	20.19
15⁄16	13.39	14.50	15.62	16.74	17.85	18.96	20.08	21.20
133⁄8	14.03	15.20	16.36	17.53	18.70	19.87	21.04	22.21
17⁄16	14.66	15.88	17.10	18.33	19.55	20.77	21.99	23.22
11⁄2	15.30	16.58	17.85	19.13	20.40	21.68	22.95	24.23
19⁄16	15.94	17.27	18.60	19.92	21.25	22.58	23.91	25.24
15⁄8	16.58	17.96	19.34	20.72	22.10	23.48	24.87	26.25
111⁄16	17.22	18.65	20.08	21.51	22.95	24.38	25.82	27.26
13⁄4	17.85	19.34	20.83	22.32	23.80	25.29	26.78	28.27
113⁄16	18.49	20.03	21.57	23.11	24.65	26.19	27.73	29.27
17⁄8	19.13	20.72	22.31	23.91	25.50	27.10	28.69	30.28
115⁄16	19.77	21.41	23.06	24.70	26.35	28.00	29.64	31.29
2	20.40	22.10	23.80	25.50	27.20	28.90	30.60	32.30
Thick- ness in inches	5″	51⁄4″	51⁄2″	53⁄4″	6″	12″
3⁄16	3.19	3.35	3.51	3.67	3.83	7.65
1⁄4	4.25	4.46	4.67	4.89	5.10	10.20
5⁄16	5.31	5.58	5.84	6.11	6.38	12.75
3⁄8	6.38	6.69	7.02	7.34	7.65	15.30
7⁄16	7.44	7.81	8.18	8.56	8.93	17.85
1⁄2	8.50	8.93	9.35	9.77	10.20	20.40
9⁄16	9.57	10.04	10.52	11.00	11.48	22.95
5⁄8	10.63	11.16	11.69	12.22	12.75	25.50
11⁄16	11.69	12.27	12.85	13.44	14.03	28.05
3⁄4	12.75	13.39	14.03	14.67	15.30	30.60
13⁄16	13.81	14.50	15.19	15.88	16.58	33.15
7⁄8	14.87	15.62	16.36	17.10	17.85	35.70
15⁄16	15.94	16.74	17.53	18.33	19.13	38.25
1	17.00	17.85	18.70	19.55	20.40	40.80
11⁄16	18.06	18.96	19.87	20.77	21.68	43.35
11⁄8	19.13	20.08	21.04	21.99	22.95	45.90
13⁄16	20.19	21.20	22.21	23.22	24.23	48.45
11⁄4	21.25	22.32	23.38	24.44	25.50	51.00
15⁄16	22.32	23.43	24.54	25.66	26.78	53.55
13⁄8	23.38	24.54	25.71	26.88	28.05	56.10
17⁄16	24.44	25.66	26.88	28.10	29.33	58.65
11⁄2	25.50	26.78	28.05	29.33	30.60	61.20
19⁄16	26.57	27.89	29.22	30.55	31.88	63.75
15⁄8	27.63	29.01	30.39	31.77	33.15	66.30
111⁄16	28.69	30.12	31.55	32.99	34.43	68.85
13⁄4	29.75	31.24	32.73	34.22	35.70	71.40
113⁄16	30.81	32.35	33.89	35.43	36.98	73.95
17⁄8	31.87	33.47	35.06	36.65	38.25	76.50
115⁄16	32.94	34.59	36.23	37.88	39.53	79.05
2	34.00	35.70	37.40	39.10	40.80	81.60

7. Weights and Areas of Square and Round Bars and Circumferences of Round Bars

Thickness or Diameter in inches	Weight of □ Bar one foot long	Weight of ○ Bar one foot long	Area of □ Bar in sq. inches	Area of ○ Bar in sq. inches	Circumference of ○ Bar in inches
1⁄16	.013	.010	.0039	.0031	.1963
1⁄8	.053	.042	.0156	.0123	.3927
3⁄16	.119	.094	.0352	.0276	.5890
1⁄4	.212	.167	.0625	.0491	.7854
5⁄16	.333	.261	.0977	.0767	.9817
3⁄8	.478	.375	.1406	.1104	1.1781
7⁄16	.651	.511	.1914	.1503	1.3744
1⁄2	.850	.667	.2500	.1963	1.5708
9⁄16	1.076	.845	.3164	.2485	1.7671
5⁄8	1.328	1.043	.3906	.3068	1.9635
11⁄16	1.608	1.262	.4727	.3712	2.1598
3⁄4	1.913	1.502	.5625	.4418	2.3562
13⁄16	2.245	1.763	.6602	.5185	2.5525
7⁄8	2.603	2.044	.7656	.6013	2.7489
15⁄16	2.989	2.347	.8789	.6903	2.9452
1	3.400	2.670	1.0000	.7854	3.1416
1⁄16	3.838	3.014	1.1289	.8866	3.3379
1⁄8	4.303	3.379	1.2656	.9940	3.5343
3⁄16	4.795	3.766	1.4102	1.1075	3.7306
1⁄4	5.312	4.173	1.5625	1.2272	3.9270
5⁄16	5.857	4.600	1.7227	1.3530	4.1233
3⁄8	6.428	5.049	1.8906	1.4849	4.3197
7⁄16	7.026	5.518	2.0664	1.6230	4.5160
1⁄2	7.650	6.008	2.2500	1.7671	4.7124
9⁄16	8.301	6.520	2.4414	1.9175	4.9087
5⁄8	8.978	7.051	2.6406	2.0739	5.1051
11⁄16	9.682	7.604	2.8477	2.2365	5.3014
3⁄4	10.41	8.178	3.0625	2.4053	5.4978
13⁄16	11.17	8.773	3.2852	2.5802	5.6941
7⁄8	11.95	9.388	3.5156	2.7612	5.8905
15⁄16	12.76	10.02	3.7539	2.9483	6.0868
2	13.60	10.68	4.0000	3.1416	6.2832
1⁄16	14.46	11.36	4.2539	3.3410	6.4795
1⁄8	15.35	12.06	4.5156	3.5466	6.6759
3⁄16	16.27	12.78	4.7852	3.7583	6.8722
1⁄4	17.22	13.52	5.0625	3.9761	7.0686
5⁄16	18.19	14.28	5.3477	4.2000	7.2649
3⁄8	19.18	15.07	5.6406	4.4301	7.4613
7⁄16	20.20	15.86	5.9414	4.6664	7.6576
1⁄2	21.25	16.69	6.2500	4.9087	7.8540
9⁄16	22.33	17.53	6.5664	5.1572	8.0503
5⁄8	23.43	18.40	6.8906	5.4119	8.2467
11⁄16	24.56	19.29	7.2227	5.6727	8.4430
3⁄4	25.	20.20	7.5625	5.9396	8.6394
13⁄16	26.90	21.12	7.9102	6.2126	8.8357
7⁄8	28.10	22.07	8.2656	6.4918	9.0321
15⁄16	29.34	23.04	8.6289	6.7771	9.2284
3	30.60	24.03	9.0000	7.0686	9.4248
1⁄16	31.89	25.04	9.3789	7.3662	9.6211
1⁄8	33.20	26.08	9.7656	7.6699	9.8175
3⁄16	34.55	27.13	10.160	7.9798	10.014
1⁄4	35.92	28.20	10.563	8.2958	10.210
5⁄16	37.31	29.30	10.973	8.6179	10.407
3⁄8	38.73	30.42	11.391	8.9462	10.603
7⁄16	40.18	31.56	11.816	9.2806	10.799
1⁄2	41.65	32.71	12.250	9.6211	10.996
9⁄16	43.14	33.90	12.691	9.9678	11.192
5⁄8	44.68	35.09	13.141	10.321	11.388
11⁄16	46.24	36.31	13.598	10.680	11.585
3⁄4	47.82	37.56	14.063	11.045	11.781
13⁄16	49.42	38.81	14.535	11.416	11.977
7⁄8	51.05	40.10	15.016	11.793	12.174
15⁄16	52.71	41.40	15.504	12.177	12.370
4	54.40	42.73	16.000	12.566	12.566
1⁄16	56.11	44.07	16.504	12.962	12.763
1⁄8	57.85	45.44	17.016	13.364	12.959
3⁄16	59.62	46.83	17.535	13.772	13.155
1⁄4	61.41	48.24	18.063	14.186	13.352
5⁄16	63.23	49.66	18.598	14.607	13.548
3⁄8	65.08	51.11	19.141	15.033	13.744
7⁄16	66.95	52.58	19.691	15.466	13.941
1⁄2	68.85	54.07	20.250	15.904	14.137
9⁄16	70.78	55.59	20.816	16.349	14.334
5⁄8	72.73	57.12	21.391	16.800	14.530
11⁄16	74.70	58.67	21.973	17.257	14.726
3⁄4	76.71	60.25	22.563	17.721	14.923
13⁄16	78.74	61.84	23.160	18.190	15.119
7⁄8	80.81	63.46	23.766	18.665	15.315
15⁄16	82.89	65.10	24.379	19.147	15.512
5	85.00	66.76	25.000	19.635	15.708
1⁄16	87.14	68.44	25.629	20.129	15.904
1⁄8	89.30	70.14	26.266	20.629	16.101
3⁄16	91.49	71.86	26.910	21.135	16.297
1⁄4	93.72	73.60	27.563	21.648	16.493
5⁄16	95.96	75.37	28.223	22.166	16.690
3⁄8	98.23	77.15	28.891	22.691	16.886
7⁄16	100.5	78.95	29.566	23.221	17.082
1⁄2	102.8	80.77	30.250	23.758	17.279
9⁄16	105.2	82.62	30.941	24.301	17.475
5⁄8	107.6	84.49	31.641	24.850	17.671
11⁄16	110.0	86.38	32.348	25.406	17.868
3⁄4	112.4	88.29	33.063	25.967	18.064
13⁄16	114.9	90.22	33.785	26.535	18.261
7⁄8	117.4	92.17	34.516	27.109	18.457
15⁄16	119.9	94.14	35.254	27.688	18.653