Modern Machine-Shop Practice, Volumes I and II

by Joshua Rose

Figs. 3284, 3285, 3286, 3287.

[Figs. 3284], [3285], [3286], and [3287] show the setting for a half arch front boiler, the dimensions of the settings of both these boilers being given in the following tables:

MEASUREMENTS FOR SETTING TUBULAR STATIONARY BOILERS WITH FULL ARCH FRONTS.

REFERENCE LETTERS ON DIAGRAMS.

No.		A	B	C	D	E	F	G		H	I	J	K	L	M	N		O	P	Q	R	S	T	U	NO. OF FIRE BRICK.	NO. COMMON BRICK ABOVE FLOOR LEVEL.
		Ft.	Ins.	Ins.	Ins.	Ins.	Ins.	Ins.		Ins.	Ins.	Ins.	Ins.	Ins.	Ins.	Ft.	Ins.	Ins.	Ins.	Ins.	Ins.	Ins.	Ins.	Ins.
1		7	32	12	20	16	45	44		7	32	64	85	26	19	11-	6	20	40	12	16	36	34	4	600	6800
2		7	34	12	20	16	48	47		8	34	66	90	26	22	11-	6	20	40	12	16	36	34	4	600	7500
3		8	36	12	20	16	48	47		8	36	68	92	26	22	12-	6	24	40	12	16	36	34	4	650	7700
3	1⁄2	10	36	12	20	16	48	47		8	36	68	92	26	22	14-	6	28	46	12	16	42	42	4	720	8500
4		8	42	14	20	16	48	47		8	42	74	98	27	21	12-	8	24	40	12	16	36	34	4	730	8500
5		10	42	14	20	16	48	47		8	42	74	98	27	21	14-	8	28	46	12	16	42	42	4	770	9600
6		10	44	14	24	16	48	47		10	44	76	100	27	21	15-	0	28	46	12	16	42	42	4	880	10500
7		12	44	14	24	16	48	46	1⁄2	10	44	76	100	27	21	17-	0	32	52	12	16	48	49	4	940	10800
7	1⁄2	14	44	14	24	16	47	45	1⁄2	10	44	76	99	26	21	19-	0	36	58	12	16	54	84	4	1120	11500
8		12	48	16	24	16	47	45	1⁄2	10	48	88	103	26	21	17-	2	32	52	12	20	48	49	4	1120	13600
9		14	48	16	24	16	47	45	1⁄2	10	48	88	103	26	21	19-	2	36	58	12	20	54	84	4	1140	15700
10		12	54	16	24	20	50	48	1⁄2	10	54	94	112	26	24	17-	6	32	52	12	20	48	49	4	1160	16200
10	1⁄2	15	54	16	24	20	50	48	1⁄2	10	54	94	112	26	24	20-	8	36	56	16	20	54	90	4	1270	17500
11		12	60	18	24	20	50	48	1⁄2	12	60	108	118	26	24	17-	10	32	50	16	24	48	49	4	1400	20500
12		14	60	18	24	20	50	48	1⁄2	12	60	108	118	26	24	19-	10	36	56	16	24	54	84	4	1500	23000
13		16	60	18	26	20	50	48		12	60	108	118	26	24	22-	0	40	56	16	24	54	96	4	1540	25300
14		15	66	18	28	20	50	48	1⁄2	12	66	114	124	26	24	21-	2	36	56	16	24	54	90	4	1590	26000
15		16	66	18	28	20	50	48		12	66	114	124	26	24	22-	2	40	56	16	24	54	96	4	1620	27000
16		16	72	20	30	20	50	48		12	72	120	130	26	24	22-	6	40	56	16	24	54	96	4	1750	30000
Note.—In setting“Standard” boilers, the side walls should be so built that thelongitudinal seams of the shell will be protected from the fire.

MEASUREMENTS FOR SETTING TUBULAR STATIONARY BOILERS WITH HALF ARCH FRONTS.

REFERENCE LETTERS ON DIAGRAMS.

No.		A	B	C	D	E	F		G		H	I	J	K		L		M		N		O	P		Q	R	S	T	U	V		W		X	Y	Z	NO. OF FIRE BRICK.	NO. COMMON BRICK ABOVE FLOOR LEVEL.
		Ft.	Ins.	Ins.	Ins.	Ins.	Ins.		Ins.		Ins.	Ins.	Ins.	Ins.		Ins.		Ins.		Ft.	Ins.	Ins.	Ins.		Ins.	Ins.	Ins.	Ins.	Ins.	Ins.		Ins.		Ins.	Ins.	Ins.
1		7	32	14	20	16	46		45		7	32	64	73		26		20		10-	3	20	33		12	16	36	34	4	36		9		24	12	7	600	6150
2		7	34	14	20	16	46		45		8	34	66	75		26		20		10-	3	20	33		12	16	36	34	4	36		9		28	12	7	600	6200
3		8	36	14	20	16	46		45		8	36	68	77		26		20		11-	3	24	33		12	16	36	34	4	36		9		28	12	15	650	6700
3	1⁄2	10	36	14	20	16	46		45		8	36	68	77		26		20		13-	3	28	39		12	16	42	42	4	36		9		28	12	25	720	7050
4		8	42	18	20	16	46		45		8	42	74	83		27		19		11-	3	24	32	1⁄2	12	16	36	34	4	32	3⁄4	12	1⁄4	32	16	11	730	7700
5		10	42	18	20	16	46		45		8	42	74	83		27		19		13-	3	28	38	1⁄2	12	16	42	42	4	32	3⁄4	12	1⁄4	32	16	25	770	8700
6		10	44	18	24	16	46		45		10	44	76	85		27		19		13-	7	28	38	1⁄2	12	16	42	42	4	32	3⁄4	12	1⁄4	36	16	25	880	8800
7		12	44	18	24	16	46		44	1⁄2	10	44	76	85		27		19		15-	7	32	44	1⁄2	12	16	48	49	4	32	1⁄4	12	1⁄4	36	20	35	940	9300
7	1⁄2	14	44	18	24	16	46		44	1⁄2	10	44	76	85		27		19		17-	7	36	50	1⁄2	12	16	54	84	4	32	1⁄4	12	1⁄4	36	24	45	1120	9500
8		12	48	19	24	16	50		48	1⁄2	10	48	88	93		26		24		15-	7	32	48		12	20	48	49	4	36	1⁄4	12	1⁄4	36	20	35	1120	11100
9		14	48	19	24	16	50		48	1⁄2	10	48	88	93		26		24		17-	7	36	54		12	20	54	84	4	36	1⁄4	12	1⁄4	36	24	45	1140	12900
10		12	54	19	24	20	50		48	1⁄2	10	54	94	99		26		24		15-	11	32	48	1⁄2	12	20	48	49	4	34		14	1⁄2	42	20	35	1160	13200
10	1⁄2	15	54	19	24	20	50		48	1⁄2	10	54	94	99		26		24		19-	1	36	52	1⁄2	16	20	54	90	4	34		14	1⁄2	42	24	57	1270	14200
11		12	60	21	24	20	46	3⁄4	45	1⁄2	12	60	108	101	3⁄4	26		20	3⁄4	16-	1	32	47		16	24	48	49	4	31		14	1⁄2	48	20	37	1400	16700
12		14	60	21	24	20	46	3⁄4	45		12	60	108	101	3⁄4	26		20	3⁄4	18-	1	36	53		16	24	54	84	4	30	1⁄2	14	1⁄2	48	24	45	1500	19200
13		16	60	21	26	20	46	3⁄4	45		12	60	108	101	3⁄4	26		20	3⁄4	20-	3	40	53		16	24	54	96	4	30	1⁄2	14	1⁄2	48	24	65	1540	21500
14		15	66	24	28	20	47		45	1⁄2	12	66	114	108		26		21		19-	5	36	52	1⁄2	16	24	54	90	4	31		14	1⁄2	54	24	57	1590	22100
15		16	66	24	28	20	47		45	1⁄2	12	66	114	108		26		21		20-	5	40	52	1⁄2	16	24	54	96	4	31		14	1⁄2	54	24	65	1620	23100
16		16	72	24	30	20	48		46	1⁄2	12	72	120	115		28	1⁄4	19	3⁄4	20-	7	40	52	1⁄2	16	24	54	96	4	27	1⁄2	19		54	24	65	1750	26000
Note.—In setting “Standard” boilers,the side walls should be so built that the longitudinal seams of the shell will be protected from the fire.

THE EVAPORATIVE EFFICIENCIES OF BOILERS.