Pumps and Hydraulics, Part 2 (of 2) - N. Hawkins

Fig. 416.

TABLE OF EFFECTIVE FIRE STREAMS.

USING 100 FEET OF 2¹⁄₂-INCH ORDINARY BEST QUALITY RUBBER-LINED HOSE BETWEEN NOZZLE AND HYDRANT, OR PUMP.

Smooth Nozzle, Size	³⁄₄-inch.
Pressure at Hydrant, lbs.	32	43	54	65	75	86
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	2	3	4	5	5	6
Vertical Height, feet	48	60	67	72	76	79
Horizontal Distance, feet	37	44	50	54	58	62
Gallons Discharged per Minute	90	104	116	127	137	147
Smooth Nozzle, Size	⁷⁄₈-inch.
Pressure at Hydrant, lbs.	34	46	57	69	80	91
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	4	6	7	9	10	11
Vertical Height, feet	49	62	71	77	81	85
Horizontal Distance, feet	42	49	55	61	66	70
Gallons Discharged per Minute	123	142	159	174	188	201
Smooth Nozzle, Size	1-inch.
Pressure at Hydrant, lbs.	37	50	62	75	87	100
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	7	10	12	15	17	20
Vertical Height, feet	51	64	73	79	85	89
Horizontal Distance, feet	47	55	61	67	72	76
Gallons Discharged per Minute	161	186	208	228	246	263
Smooth Nozzle, Size	1¹⁄₈-inch.
Pressure at Hydrant, lbs.	42	56	70	84	98	112
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	12	16	20	24	18	32
Vertical Height of Stream, feet	52	65	75	83	88	92
Horizontal Dist. of Stream, feet	50	59	66	72	77	81
Gallons Discharged per Minute	206	238	266	291	314	336
Smooth Nozzle, Size	1¹⁄₄-inch.
Pressure at Hydrant, lbs.	49	65	81	97	113	129
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	9	25	31	37	43	49
Vertical Height of Stream, feet	53	67	77	85	91	95
Horizontal Dist. of Stream, feet	54	63	70	76	81	85
Gallons Discharged per Minute	256	296	331	363	392	419
Smooth Nozzle, Size	1³⁄₈-inch.
Pressure at Hydrant, lbs.	58	77	96	116	135	154
Pressure at Nozzle, lbs.	30	40	50	60	70	80
Pressure Lost in 100 feet, 2¹⁄₂-inch Hose, lbs.	28	37	46	56	65	74
Vertical Height of Stream, feet	55	69	79	87	92	97
Horizontal Dist. of Stream, feet	56	66	73	79	84	88
Gallons Discharged per Minute	315	363	406	445	480	514

N.B.—Mr. John R. Freeman, member of the New England Waterworks Association, should have the credit of this carefully arranged table.—See also page [125] for data relating to Nozzles.

The Clapp & Jones piston engine in design has features peculiar to itself; Fig. [416] represents one of six sizes, adapted particularly to city service.