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Full text of "Fire engine tests and fire stream tables"

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3323 

/1/3 



IRLF 



SB 315 375 



LIBRARY 

OF THE 

UNIVERSITY OF CALIFORNIA. 

GIFT OF 

a 



d 

Class 



FIRE ENGINE TESTS 



AND 



FIRE STREAM TABLES 



* * J eo 



NATIONAL BOARD OF FIRE UNDERWRITERS 
New York 



Copyright, 1910, by 
THE NATIONAL BOARD OF FIRE UNDERWRITERS 






THE EVENING POST 
JOB PRINTING OFFICE 
136 FULTON ST.. N. Y. 



PREFACE. 

This pamphlet has been prepared for the purpose of assisting 
fire department officials and others who may wish to determine 
the condition of fire engines. It may also be of service in 
testing the capacity of new engines with a view to their accept- 
ance by a city. 

Tests similar to those outlined herein have been adopted by 
several fire departments and are being made by our engineers 
in their investigation of cities throughout the country, so that 
by corresponding with this Board, the location of the nearest 
field party may be ascertained and if desired, an opportunity 
afforded to observe such tests. 

The appended fire stream tables, on pages 26 to 47, are based 
on tests of rubber-lined fire hose made in October, 1909, by 
our engineers, with the assistance of the New York Fire 
Department and the co-operation of the Department of Water 
Supply of New York City. These tables may also be used to 
find the approximate amount of water used at a fire, if engineers 
will observe from time to time the water pressure carried and 
the length of time at work. With an approximate average 
of the water pressure at each engine, the amount of water 
delivered per minute can be found for each line if the size 
of nozzle and length of hose is also known. Copies of this 
pamphlet will be sent to such captains of companies and en- 
gineers of steamers as would use them in keeping accurate 
records of the performance of their engine at fires. 

NATIONAL BOARD OF FIRE UNDERWRITERS 
COMMITTEE ON FIRE PREVENTION, 

135 William Street, 

New York. 
March, 1910. 23 7481 



PRACTICAL TESTS FOR FIRE ENGINES. 

It is the purpose of this manual to set forth convenient 
and practical methods of making fire engine tests which will 
show the physical condition of engines, their capacity for 
delivering water at a reasonable pressure and the ability of 
the operating crews. The method described has been in use 
for a number of years and has been found practical, exact and 
of great value. Although methods similar to that described below 
are in use in some departments, the character of tests made in 
many cities, and especially those for acceptance, are usually 
more spectacular than exact. The throwing of a stream over 
a church spire, city hall or court house does not necessarily 
show that the engine is capable of delivering its full rated 
capacity at a proper working pressure. 

Investigation has shown that where regular and systematic 
tests of engines are not made, even in well managed fire 
departments, defects often exist which may continue unsuspected 
for considerable periods and become manifest under the 
stress of a large fire, where the engine is called upon to 
deliver its full capacity under suitable working pressures. 
Such tests will bring to light numerous defects, as, for ex- 
ample, improper setting of steam valves, broken or worn pump 
valves, broken, weak or displaced valve springs, loose or 
tight bearings, worn or broken pump plungers, poor or 
defective condition of the boiler and poor quality of the 
coal supplied for engine fuel. Furthermore, regular tests 
are a most valuable drill for engine crews, for in only a 
few departments do they receive sufficient training in operat- 
ing engines to capacity. The breakdown of an engine at a 
fire or the inability of the crew to operate it to capacity may 
be the direct cause of confusion and the needless loss of 
property and perhaps of life, to the discredit of the depart- 
ment. 

Contracts for new fire engines usually contain guarantees 
that the engine will deliver a certain quantity of water, 
but often do not specify the pressure at which it is to be 
delivered, nor provide for any definite tests which will 



accurately determine whether the engine has fulfilled the 
guarantee; or, in other words, if the department is getting 
what it is paying for. In several cities, engines are required 
to fill large measured tanks in a specified time, but this is a 
cumbersome method at best, and such tanks are frequently 
unavailable; this usually gives no definite results as to pres- 
sure obtained and power developed. 

A practical test should show, with fair accuracy, the 
condition of both water and steam ends of pumps and the 
condition of the boiler; determine the amount of water which 
the engine will pump at a reasonable working pressure, such as 
would be required when operating at a large fire; demonstrate 
the ability of the engine to draft water, whether the pumps and 
waterways are tight under high pressures and steam valves are 
properly set, and whether the coal used is quick steaming and 
free from objectionable impurities. In addition, the test should 
be of such a character as to approach the working condition 
at a serious fire where the full capacity of the engine would 
be required, and at the same time be easily understood. The 
following tests bring out all of these points. 

The displacement test indicates very closely the actual 
condition of the pumps as a whole and, in conjunction with 
the high pressure and valve tests, the condition of the 
plungers, pump valves, packing, etc. The high pressure 
test, in connection with the results obtained from the capa- 
city test, indicates the setting of steam valves and condition 
of steam cylinders. The capacity test shows the steaming 
quality of the boiler under heavy draft and the ability of 
the engine to make sufficient speed to develop its capacity 
when working against a reasonable water pressure. If the 
test is made from a cistern or reservoir, it will show the 
ability of the engine to draft. If made from a hydrant, the 
percentage of slip obtained will indicate this feature as well, 
as an engine showing less than 7 per cent, slip may be de- 
pended upon to take suction satisfactorily. Incidentally, 
the test also shows the ability of the engine crew in operating 
and stoking the engine. 

Any machine, when new, should be capable of greater work 
than after several years of service; for this reason, a 
new engine should be given an acceptance test at least as 



APPARATUS OR TESTING 



*2P\ 




CM 



severe as any work it may have to perform in actual service. 
This test should bring out not only the capacity to pump the 
actual volume of water specified by the maker as the rated 
capacity, but also to do this at a good working pressure. It is 
the opinion of many supervising engineers that this pressure 
should be at least 150 pounds if engine is likely to be required 
to draft, and as this does not seem too severe and is required 
in some specifications, the suggestion is made that engines 
purchased be required to have sufficient boiler capacity to give 
a net water pressure at acceptance test equivalent to the fol- 
lowing values: 

Hydrant Pressures Engine to Deliver 

Under Fire Draft. Net Water Pressure of 

50 Ibs. or over. 100 Ibs. 

30 " to 50 Ibs. 120 " 

10 " to 30 " 140 " 

10 " or less. 150 " 

Engines in service need not be given as severe a test as 
those being accepted, as it is mainly their general condition that 
is to be ascertained; for this reason, 100 pounds net water 
pressure would seem a sufficiently high requirement for the 
ordinary capacity test, which should be made at least yearly. 

Apparatus Necessary for Testing. For the tests outlined 
below, no elaborate or costly outfit is needed, the only special 
appliances absolutely required being as shown on Plate I and 
listed below: 

A revolution counter. (Figure 3.) 

A stop-watch. (Figure 5.) 

A small Pitot tube. (Figure 8.) 

Two or more pressure gages. (Figures I and 9.) 

A set of smooth bore nozzles. (Figure 4.) 

A hydrant or engine-discharge cap. (Figure 2.) 

The revolution counter should be of a type easily at- 
tached to the engine frame, or any convenient part, and so 
made as to register accurately at any speed likely to be 
reached by a reciprocating engine and be easily read. 

The counter may be provided with straps for attaching 
to engine, or with the clamp and angle iron shown on Plates 
I and II. 

5 



Tachometers and speed indicators are unsuitable for fire 
engine work, as the vibration is apt to render their readings 
unreliable. 

A stop-watch can be purchased for less than $10, although 
an ordinary watch can be used. 

The Pitot tube may be any of several suitable types now 
on the market, or the type shown on Plate I may be readily 
constructed. Dimensions are given below. It should be con- 
nected by J4-inch brass pipe fittings to a pressure gage as 
shown. 

NOZZLE STREAM PITOT 




Scale Full Size 
To be of brass and finished-smooth 

The pressure gages should be preferably not more than 
$1/2 inches in diameter, in order that they may be conveniently 
handled. They should be of the compound type, in order 

6 



PLATE II. 

METHOD OF ATTACHING GAGES 
AND COUNTER FOR TESTING ENGINES. 




that any disarrangement of the needle may be readily ob- 
served, one capable of indicating pressures from a vacuum 
up to 150 pounds and one up to 200 pounds, and preferably 
divided for every pound and marked every 5 or 10 pounds, 
as shown in Figures I and 9, Plate I. Gages, especially those 
used with the Pitot, should be of good quality and accurate. 
They should be carefully calibrated (tested) with a weight 
tester or a standard gage before each day's work. 

Nozzles suitable for testing are usually found in the 
regular equipment of every fire department. Only smooth 
bore tapered nozzles should be used, as discharges from ring 
nozzles are uncertain. Care should be taken that the 
tips are not nicked or otherwise injured, and that 
washers do not project into the pipe, as a perfectly smooth 
waterway is essential. The ring nozzles on many engines 
have loose rings, which may be slipped out by unscrewing 
the end cap, leaving a suitable smooth-bore tip. Shut-off 
nozzles should not be used, as these generally have interior 
projections or breaks in the waterway, likely to cause eddies 
in the stream. Where much testing is to be done, it is better 
to set aside nozzles, keeping them solely for that purpose. The 
bore of nozzles should be accurate to size within 1/1,000 of an 
inch and carefully measured. 

The engine-discharge cap, or hydrant cap (in most cities 
these have the same thread) is tapped for $-inch pipe thread 
and fitted with a nipple and stop-cock for attaching the test 
gage. By attaching to the discharge outlet of the engine as 
shown on Plate II, the engine water gage and the test gage 
may be compared to determine if the engine gage is correct. 
Where there is time to detach the water gage and a testing set 
is available, the gage can be more accurately checked. The steam 
gages are less likely to get out of order, being less subject to 
sudden fluctuations, and a comparison of readings of side and 
rear steam gages will usually be sufficient. If the engine 
has no suction gage or tapped suction cap, the engine or 
hydrant cap should be used on the second outlet of the hydrant 
when testing an engine at a double outlet hydrant 

Tests are best made by a supervisor (as the master 
mechanic or other officer conducting the test will hereafter 



be called), with an assistant accustomed to reading gages. 
Tables showing the discharge at various pressures through 
different nozzles, for use with Pitot tube readings, are to be 
found on pages 24 and 25. A suitable form for recording data 
of tests is shown on page 14, and until the supervisor becomes 
familiar with tests, it is advisable to use a similar form at 
the tests in order not to overlook any necessary data. Later, 
a pocket note-book will doubtless be found more convenient, 
care being taken to record all the necessary data. 

Preliminary to Test. If possible, calibrate gages of engine 
before the test, by detaching and comparing on a portable 
gage-testing set. They should be calibrated in the position in 
which they are to be used, either horizontally or vertically. If 
this is not done, check water and suction gages at test, as 
explained below. 

If it is desired to determine the ability of the regular 
engine crew, the engine should, of course, be operated by 
them; if the condition and capacity of the engine are the un- 
known factors, a crew known to be efficient should be 
selected. 

If there is any convenient body of water, or cistern, where 
water may be drafted with not over 10 feet of lift, then test 
should be made at draft; otherwise, attach engine to hydrant, 
care being taken to get a hydrant attached to a large main 
(8-inch or larger), and that the hydrant pressure is not ex- 
cessive, preferably below 40 pounds. Four-inch or larger 
suction should be used. After suitably stationing engine, 
light the fire; note the time when smoke comes from stack, 
when steam gage needle moves, at 50 pounds of steam, at 
100 pounds, and pressure and time of blowing off. If engine 
has hot water in boiler, this may be omitted, noting only the 
pressure at which safety valve blows off. Then, if water 
gage on engine has not been calibrated (checked), attach 
hydrant cap and 2OO-pound test gage to engine discharge 
outlet, as shown on Plate II. Record zero of all three gages 
water, suction and test gages; open hydrant and record static 
pressure on all three gages; then with churn (hand relief) 
valve partly open and discharge gates shut, pump up pressure 
and compare test and water gages at 80 pounds, 100, no, 120, 
etc., up to no pounds over the static or hydrant pressure. li 

8 



engine has no suction gage, one of the suction caps on the 
engine can be tapped to connect the gage, as shown on Plate II, 
or the engine or hydrant cap provided with the second gage 
should be attached to one hydrant outlet. 

Let supervisor and assistant compare watches and set 
second hands together, or nearly so; this is more quickly 
accomplished if one watch has a stop-hand. The supervisor 
will find it convenient to tie his watch to coat or wrist in 
order to leave his hands free to hold note-book or Pitot. A 
leather watch holder and wrist strap, as shown on Plate I, 
such as any harness maker can make, is a convenient appliance 
for this purpose. Attach the revolution counter and con- 
nect with one of the eccentric strap oil cups or studs by a 
short length of cord, as shown on Plate II; have engine 
started slowly and adjust counter cord so that each revolu- 
tion registers. 

Displacement and Capacity Test. While the engine is get- 
ting up steam, have firemen lay hose and connect nozzle. 
If testing on a paved street, it is best to lay nozzle down in 
gutter. Use a play-pipe holder or tie nozzle to any con- 
venient post, in order to prevent pipe getting away from 
pipeman and doing damage. 

For the larger engines, attach a line of hose on each side 
of the engine and connect into the Siamese of a deluge set. 

With the smaller size engines, it is usually more convenient 
to use a single line from one side of the engine; when deluge 
sets are not available, single lines may be used on the larger 
engines. In the tables on pages 18 and 19, the length of hose 
and size of nozzle best adapted for testing engines of various 
sizes are given. In testing with the siamesed lines, start the 
engine with both lines open and bring it up to speed; if the 
desired water pressure is not obtained, close the discharge gate 
on one line slowly until the gage indicates the proper pressure. 
Similarly, with a single line attached, the gate is closed slowly 
after engine has obtained its full speed until the desired pres- 
sure is obtained. 

The supervisor can, from time to time, regulate this 
discharge gate to keep the desired water pressure, although 
if the crew operates the engine properly but little change 
will have to be made throughout the test. The engineer 



can be instructed to direct all his attention to operating 
his engine to full capacity, and the supervisor or testing 
engineer can regulate the water pressure, take the readings of 
the revolution counter, steam, water and suction gages, while 
his assistant takes readings of the nozzle pressure through- 
out the test. 

When siamesed lines are used, should the engine not be able 
to maintain the desired water pressure with one line shut off 
entirely, add another length of hose to each side, or use a 
nozzle Ji-inch smaller. With single lines, when the engine 
cannot maintain the desired pressure without undue throttling 
of the discharge valve, use a smaller nozzle or add another 
length of hose. The nozzle readings should, if possible, be over 
40 pounds, as below this point readings must be very nearly 
constant to give accurate results. 

Should water pressure at the engine be too high with 
both lines wide open, use a larger nozzle or cut out a length 
of hose from each side. 

Relief valves should be closed, sprinkler used only as 
needed, and feed pumps operated regularly. The capacity test 
should last at least 20 minutes from the time the engine reaches 
full speed. During this time the water pressure at the engine 
should be constant and such as to give a net water pressure over 
the suction pressure as given on page 5. In all cases at least 
loo pounds net pressure should be held. Unless the rubber tires 
cause undue vibration, a modern engine, if in good condition, 
can safely run for an indefinite period at 400 to 425 feet of piston 
travel per minute, that is, 300 to 320 revolutions for an 8-inch 
stroke. 

It is usually better to hold about 10 pounds over the pres- 
sure actually required, when the water pressure fluctuates 
much, as most engineers read the top of swing of a gage 
needle, while the supervisor, of course, should read the middle 
of the vibration. Gages may be throttled to prevent excessive 
vibration, but should always show some vibration to get 
true readings. During the capacity test, the supervisor should 
read counter (exactly at minute) and steam, water and suction 
gages each minute in regular order, and note the handling and 
stoking, feed water, leaks, uneven steam pressure, blowing 
off, foaming of boiler, accidents, and the .other little details 

10 



PLATE III. 

SHOWING UdS bit 

NOZZLE 



t- 




which his experience teaches him to observe. Meanwhile the 
supervisor's assistant should read the nozzle pressure every J4 
minute. Special care should be taken in reading the nozzle 
pressure. The Pitot should be held in the middle of the 
stream, with the tip about one-half the diameter of the bore 
from the end of the nozzle. Gage should be horizontal or ver- 
tical, according to the position in which it was calibrated, and 
at the same level as the end of the nozzle. This is shown on 
Plate III. 

High Pressure Test. After a run of 20 minutes in which 
there were no serious interruptions to readings, and pressure 
was maintained at an average of at least 100 pounds net, stop 
stoking; shut down, close discharge gates, partly open churn 
valve and get steam down to between 70 and 80 pounds, drawing 
fire if necessary. Then start engine slowly, and gradually close 
churn valve tight. See that all other openings, feed pumps, 
sprinklers, relief cocks, etc., are shut. Let engine turn in 
this condition for one or two minutes; observe the number of 
revolutions, and the water, steam and suction (now static) 
pressures; note any uneven motion of engine, blowing through 
of steam or imperfect valve setting, leaks in steam or water 
ends, or fittings, etc. If pumps are in good condition and valves 
set correctly, speed should not be over one revolution in 10 
seconds in any modern type engine. (This does not apply to 
a Silsby or a Button.) With 70 pounds steam and 50 pounds 
suction, water pressure will reach about 250 pounds; this is 
perfectly safe and not a severe test, as such pressures are 
frequently met in operation when long lines are used. 

Valve Tests. After taking the observations for the high 
pressure test, shut off throttle of engine and open cylinder 
drips. Note the drop in water pressure for say one-half 
minute. The manner in which this pressure holds up is an 
indication of the condition of the discharge valves. A drop 
of not over 15 pounds in one-half minute, provided there 
are no external leaks visible around the pump, indicates a fairly 
good condition of the valves. 

Suction Test. If the engine has been tested at a hydrant, 
its ability to draft may be determined as follows, provided it 
is equipped with a compound suction gage or one of the 
suction caps is tapped to receive a compound gage: Discon- 

ii 



nect engine from hydrant while there is still some steam 
pressure on boiler, put both suction caps on tight, open one 
of the discharge gates and then open throttle, allowing en- 
gine to run at a moderate speed, observe the reading of the 
compound gage while running, and also after shutting down. 
The drop of the vacuum after shutting down is an indication 
of the condition of the suction valves, provided all joints are 
good. 

To Figure Displacement. (Displacement is figured as in- 
dicated for sample test, pages 14 and 15.) In averaging the 
nozzle, steam, water and suction pressures, subtract ^ of first 
and last readings from sum of readings used (see page 15 and 
sample test sheet). Average the nozzle pressure during a 
period in which the engine ran steadily, water pressure was 
well maintained and the nozzle pressure varied the least. When 
possible, use a 20-minute period in figuring the displacement; 
if for any reason there is much variation in the nozzle pressure, 
say over 10 per cent, during any one minute, select as long a 
period as possible, but at least 10 minutes, during which the 
pressure has been well maintained. Correct for gage error. 
Take out corresponding gallons from table, pages 24 and 25, in- 
terpolating for odd pressures or for odd sized nozzles. 

Example: i l / 2 " nozzle, 61 pounds nozzle pressure. 

62 pounds' nozzle pressure gives 525 gallons 

60 " " " " 517 gallons 

or 2 pounds give a difference of 8 gallons 

and i pound gives l /i of this, or 4 gallons 

Therefore, 61 pounds' nozzle pressure =5i7-{-4 

=521 gallons 
Example: i 9/16" nozzle, 60 pounds nozzle pressure. 

60 pounds through \%" nozzle gives 607 gallons 

60 " " i#* " " 517 gallons 

or y%" difference in nozzle diameter gives ... 90 gallons 
and 1/16" " " " "... 45 gallons 

Therefore, i 9/16" nozzle at 60 pounds gives 517+45 

=562 gallons 



Divide the average gallons discharged by the average revo- 
lutions per minute to obtain the actual net displacement of 
the pumps. The nominal displacement will be found from 
the table, page 16, allowing for the pump rods. The dimen- 
sion of the pumps, such as stroke, diameter of pump barrel 
and pump rods, should be accurately measured, if in question. 
The difference between actual and nominal displacements is 
the slip, which should be from 3 to 5 per cent, of the nominal 
displacement in a new engine (6 per cent, in a rotary) ; of 
this, about H per cent, is due to the feed water (i per cent, 
with a Button or Silsby engine). After engine has been in 
use a few months, slip will generally increase about I per 
cent; thereafter, if valves and packings are given proper at- 
tention, there should be only a slight increase. A slip of 10 
per cent, or over indicates broken or displaced valve springs, 
and more than this, a badly worn plunger or pump barrel, 
or possibly a leaky suction. In a rotary, the wear is prin- 
cipally in the pump cam slides, which will also stick at times, 
causing increased slip even if not worn. 

To Figure Capacity. When the engine is run for 20 minutes 
at a uniform speed during the displacement test, the average 
discharge measured at the nozzle by the Pitot is the capacity 
of the engine. If only a lo-minute period of the run is used 
for figuring the displacement, the capacity of the engine is 
determined by multiplying the actual displacement (found in 
the displacement test) by the average revolutions per minute 
during a 2O-minute period in which the engine worked at its 
full capacity. Steam, water and suction pressures during the 
capacity run should be averaged and corrected for gage error. 
In figuring percentage of capacity delivered, for a new fire engine, 
it is well to use contract figures for the rated capacity which 
the engine is guaranteed to deliver. A capacity due to a piston 
travel of about 420 feet per minute (315 revolutions for 8-inch 
stroke) less a 3 per cent, allowance for slip, is reasonable for 
a modern engine; older types vary considerably. 



LOG OF. FIRE ENGINE TEST 



GAGE 

COMPARISON 
TES 



ENGINE: Size_ 

DIMENSIONS: Cylinders. ..^.T. ....... Pomp Bore ... 

BOILER: Typ_...-'._ ........... ........ Diame 



fK 



TIME COUNTER RRM 



... Rated Capac(ty..K?.<2...Bullt..../.W7 ... 

.'. ....... ...._ Stroke ..... .": .......... _. Pump rods.. ^ 

' Height-...*^'-' ......... Bullt__-_.l*0Z.... 



+4 



_2 







/*g 



33 



& 



145 



/3S 



14J5L 



3L 



S2. 



*L 



4032 



. 



31 




a 



DISPLACEMENT TEST 



CAPACITY TEST 



M GH PRESSURE TEST 



.Corrprteri prg<^ 



Gnllons per min 



. RP.VS. per min. 



rijsnlacement 



(nom-n 



4-.ll 



Slip per cent. 



Figured 



CALCULATIONS FOR ENGINE TESTS. 

(FOR TEST ON OPPOSITE PAGE.) 



DISPLACEMENT TEST. 

AVERAGE DISCHARGE. 
To obtain Average Nozzle Pressure; 

Sum Column " Min." 1,870 

Subtract % sum of first and 
last figures 85 

1,785 

Sum Column "J4" 1.791 

"H" 1,795 

" "%" 1,802 

Divide by 80 ) 7.173 

Average Nozzle Reading. . 89.7 
Correction from Gage Test 
Sheet +2.0 

Average Nozzle Pressure. 91.7 
From Discharge Tables for 1%" 
Nozzle: 

92 Ibs. gives 751 gallons. 

90 " ...743 



1.7 Ibs. gives 6.8 " 

Then 91.7 Ibs. = 749.8 gallons. 

AVERAGE R. P. M. 

Counter at 3. 59 4,358 

" " 3.89 7,870 



_ 
~ 



Divide by 20 ) 

Average R. P. M = 824.4 
ACTUAL DISPLACEMENT. 
Average Discharge _ 749.8 
Average R. P. M~T ~~ 324.4 

NOMINAL DISPLACEMENT. 
From Engine Displacement Table: 

4%" Bore, 8" Stroke 2.455 

1^4" Pump Rod 085 

Nominal Displacement = 2.370 

SLIP, IN PER CENT. 

Nom. DisplacenVt Act. DisplacenVt 
Nominal Displacement 
2.370 2.311 _ 

OTO '*? 



CAPACITY TEST. 
AVERAGE R. P. M. 

Same as for Displacement Test in 
this case. 

GALLONS PER MINUTE. 
Same as for Displacement Test in 
this case. 

AVERAGES OF PRESSURES. 
Steam: 

Sum of Column 2,787 

16 of first and last figures 133 

Divide by 20 ) 2,654 

Average Steam Reading.. 132.7 
Water: 

Sum of Column 3,065 

Y% of first and last figures. . . 142.5 

Divided by 20 ) 2,922.5 

Average Reading. ..... . 146. 1 

1.0 



Gage and Test Sheet, for 
Gage No. 119 



Average Water Pressure 145 . 1 
Suction: 

Sum of Column 746 

^3 of first and last figures 85 

Divide by 20... ...) 711 



Average Reading 85.6 

Correction from Test of Gage + 1.0 

Average Suction Pressure 86.6 
Net Pressure: 

Average water pressure 145 . 1 

Average suction pressure. . 86.6 

Average net pressure. . 108.5 
PERCENTAGE OF CAPACITY OBTAINED. 
Reasonable capacity of 
Pumps based on 400 Ft. 
Piston Travel per Min. = 700 gals. 

Obtained at Test 750 gals. 

or 107^ of Rating. 



ENGINE DISPLACEMENT TABLE. 



DOUBLE PUMPS. 



PLUNGER DISPLACEMENT. 


PUMP ROD CORRECTION. 


GALLONS PER REVOLUTION. 


GALLONS PER REVOLUTION. 


Bore 


Stroke in Inches. 


Diameter 


Stroke in Inches. 


of Pump 




of 




Inches. 


789 


Pump Rods. 


789 


3 1/2 


1.166 1.333 1.500 


1 " 


0.047 0.054 0.061 


3 5/8 


1.251 1.480 1.609 


1 1/16 


0.053 0.061 0.069 


3 3/4 


1.339 1.530 1.721 


1 1/8 


0.060 0.069 0.078 


3 7/8 


1.430 1.634 1.888 


1 8/16 


0.067 0.077 0.087 


4 


1.528 1.740 1.958 


1 1/4 


0.074 0.085 0.096 


4 1/8 


1.620 1.851 2.082 


1 6/16 


0.081 0.098 0.105 


4 1/4 


1.719 1.965 2.211 


1 3/8 


0.089 0.102 0.115 


4 3/8 


1.822 2.088 2.343 


1 7/16 


0.098 0.112 0.126 


4 1/2 


1.928 2.203 2.478 


1 1/2 


0.107 0.122 0.138 


4 5/8 


2.036 2.327 2.618 


1 9/16 


0.116 0.183 0.150 


4 3/4 


2.148 2.455 2.762 


1 5/8 


0.126 0.143 0.162 


4 7/8 


2.268 2.586 2.909 


1 11/16 


0.186 0.155 0.174 


5 


2.380 2.720 3.060 


1 3/4 


0.146 0.167 0.188 


5 1/8 


2.500 2.858 3.215 






5 1/4 


2.624 2.999 3.374 




5 3/8 


2.750 3.143 3.536 


Subtract pump rod correction from 






plunger displacement to obtain cor- 


5 1/2 


2.880 8.291 3.702 


rect displacement of engine. 


5 5/8 


3.012 8.442 3.872 


For single-pump engines, use one- 


5 3/4 


8.147 3.597 4.047 


half of result obtained. 


6 7/8 


8.286 3.755 4.225 




6 


8.427 8.917 4.407 





Example : Engine with 5J4-inch pump, 9-inch stroke and IJ^-inch pump 



rod. 



From Table above : 

Displacement of Plunger = 3.874 gallons. 
Correction for Rod = . 1 38 gallons. 



Nominal Displacement = 3. 236 gallons 



16 



The following table gives the reasonable capacity of 
several common sizes of fire engines: 

REASONABLE CAPACITIES OF MODERN STEAM FIRE ENGINES. 



Bore of Pumps, 
Inches. 


Stroke, Inches. 


Capacity, 
Gallons per Minute. 


6 


9 


1,100 


Sti 


8 or 9 


1,000 


5/2 


8 


900 


3% 


8 or 9 


850 


5 


8 


750 


4ti 


8 


700 


4/2 


7 or 8 


600 


4 l /4 


7 or 8 


550 


4 


7 


500 



RATED CAPACITY OF SILSBY ENGINES. 



Maker's 
Size. 


Nominal Displacement 
per Revolution, Rated Capacity, 
Gallons. Gallons per Minute. 


Extra First 
First 
Second 
Third 
Fourth 
Fifth 


1.261 1,000 
1.141 900 
0.952 700 
0.804 600 
0.675 500 
0.513 400 



II 






1 *i 



if 

f 



**. 

Ilsl 
If 






W N 

O N 

\& 



r 



X 



7 



Sis 



SF 



l 



S S 






05 O 

s? 



IIP 

S cL? a 



I'l 



II- 

OSi 



11 



18 



u. .- 
o s 

05 

&sS 
SI3 
d|S 



IF 

ill 



Hi 
||| 

O ft" 



N <D 
O |.o 

S6a 
3 

si 
31 



h 



i 

Cl 



aad sn 






us, 

s 

I 
1- 



R 



FIRE STREAM TABLES. 

These tables are arranged to show the pressures required at 
the hydrant or fire engine, while stream is flowing, to maintain 
nozzle pressures given in the first columns, through various 
lengths of 2^-, 3~ and 3^-inch rubber lined hose in single lines 
and two lines of 2^-inch hose siamesed. 

The pressure at the hydrant or fire engine is that indicated 
by a gage attached to the hydrant or fire engine while the 
stream is flowing. The pressure at the nozzle is that indicated 
by a Pitot gage held in the stream. 

The hydrant (or engine) pressures are obtained by adding 
to the nozzle pressure the friction loss in the hose, and also the 
small additional loss in the hydrant outlet or engine discharge. 

Friction losses in hose are based on tests of best quality 
rubber-lined fire hose and are for loo-foot lengths measured 
without pressure applied. Diameters of hose, as measured under 
75 pounds pressure, assumed as the average working condition, 
were as follows: For nominal 2j^-inch, 2.575 or about 2 9/16 
inches; for nominal 3-inch, 3.125 or 3^ inches; for nominal 
3j^-inch, 3.685 or about 3 11/16 inches. 

The smoothness of the lining has a very considerable effect 
on the friction loss, some samples tested showing losses 50 per 
cent, in excess of those given. A slight variation in diameter 
also produces a marked difference in friction loss; in the case 
of 25^-inch hose, a variation of 1/16 inch in diameter will 
result in 10 per cent, difference in loss. If properly beveled 
2j^-inch couplings are used on 3-inch hose, the loss of pressure 
due to them will be less than 5 per cent, of that gained by the 
use of the larger hose. For instance, for a flow of 300 gallons 
per minute, the loss in 2^-inch hose will be about 21 pounds, 
in 3-inch hose with 3-inch couplings about 8 pounds, and in 3-inch 
with 2^-inch couplings about S 1 A pounds. 

For siamesed lines, an allowance was made for the loss 
in the Siamese connection and for 20 feet of 3^-inch lead hose. 



20 



The pressures given are for the nozzle at the same elevation 
as the hydrant or engine discharge outlet. Add or subtract 
i pound to the pressure given for each 2 1/3 feet difference in 
elevation. The arrangement of the table allows a comparison 
to be readily made of the results obtainable with 3-inch hose 
and siamesed lines against single lines of 224-inch hose. 



21 



EFFECTIVE REACH OF FIRE STREAMS. 



SHOWING THE DISTANCE IN FEET FROM THE NOZZLE AT 

WHICH STREAMS WILL DO EFFECTIVE WORK WITH A 

MODERATE WIND BLOWING. WITH A STRONG WIND 

THE REACH is GREATLY REDUCED. 





SIZE OF NOZZLE. 


<u 

1 


i-Inch. 


i|-Inch. 


ii-Inch. 


it-Inch. 


ii-Inch. 


55 

rt 


it 


it 

- <u 


at 


71 

S * 


il 


A 

*i 


pi 


C QJ 


g| 


s 


j- 


, -t. 


Cd Ci- 




~ 


fa 


fa 


-fa 


rt Lt- 


-fa 


cd fa 


* 


if 


If 

E~ 


II 


II 

C C8 


Jt 

11 


eg 


ti 


|s 


Vertica 
tance, 


1 Horizon 
tance, 


20 


35 


37 


36 


38 


36 


39 


36 


40 


37 


42 


25 


43 


42 


44 


44 


47 


46 


45 


47 


46 


49 


30 


5i 


47 


52 


5 


52 


52 


53 


54 


54 


56 


35 


58 


51 


59 


54 


59 


58 


59 


59 


62 


62 


40 


64 


55 


65 


59 


65 


62 


66 


64 


69 


66 


45 


69 


58 


70 


63 


70 


65 


72 


68 


74 


7i 


50 


73 


61 


75 


66 


75 


69 


77 


72 


79 


75 


55 


76 


64 


79 


69 


80 


72 


81 


75 


82 


78 


60 


79 


67 


83 


72 


84 


75 


85 


77 


87 


80 


65 


82 


70 


86 


75 


87 


78 


88 


79 


90 


81 


70 


85 


72 


88 


77 


90 


80 


9' 


82 


92 


84 


75 


87 


74 


90 


79 


92 


82 


93 


84 


94 


86 


80 


89 


76 


92 


81 


94 


84 


95 


86 


96 


88 


85 


9i 


78 


94 


83 


96 


87 


97 


88 


99 


90 


90 


92 


80 


96 


85 


98 


89 


99 


90 


100 


9i 



NOTE. Nozzle pressures 
vertical distances are based on 
Am. Soc. C. E M Vol. XXI. 



are as indicated 
experiments by 

22 



by Pitot tube. The horizontal and 
Mr. John R. Freeman, Transactions, 



FRICTION LOSS IN FIRE HOSE. 

BASED ON TESTS OF BEST QUALITY RUBBER LINED FIRE HOSE.* 



Flow, Gal Ions per 
Minute. 


PRESSURE Loss IN EACH 
100 FEET OF HOSE, 
POUNDS PER SQ. INCH. 


Flow, Gallons per 
Minute. 


PRESSURE Loss IN 
EACH 100 FEET OF 
HOSE, POUNDS PER 
SQ. INCH. 


2*" 

Hose. 


Hose. 


3*' 

Hose. 


2 Lines of 

2|* 

Siamesed. 


Hose. 


3r 

Hose. 


2 Lines of 

2|" 

Siamesed. 


140 


5-2 


2.0 


0.9 


1.4 


525 


23.2 


10.5 


16.6 


1 60 


6.6 


2.6 


I .2 


1.9 


550 


25.2 


11.4 


18.1 


1 80 


8-3 


3-2 


i-5 


2-3 


575 


27.5 


12.4 


19.0 


200 


10. I 


3-9 


1.8 


2.8 


600 


29.9 


13-4 


21 .2 


220 


12.0 


4.2 


2.1 


3-3 


625 


32.0 


14.4 


23.0 


240 


T4. I 


5-4 


2.5 


3-9 


650 


34-5 


i5 5 


24.8 


260 


16.4 


6.3 


2.9 


4-5 


675 


37-0 


16.6 


26.5 


280 


18.7 


7-2 


3-3 


5.2 


700 


39-5 


17.7 


28.3 


3 00 


21 .2 


8.2 


3-7 


5-9 


725 


42-3 


18.9 


30-2 


320 


23-8 


93 


4-2 


6.6 


750 


45.0 


20.1 


32.2 


340 


26.9 


10.5 


4-7 


7-4 


775 


47.8 


21.4 


34-2 


360 


3O.O 


11.5 


5.2 


8-3 


800 


50.5 


22.7 


36.2 


3 80 


33 -o 


12.8 


5.8 


9.2 


825 


53-5 


24.0 


38.4 


400 


36.2 


14.1 


6-3 


10. I 


850 


56.5 


25.4 


40.7 


425 


40.8 


15-7 


7.0 


"3 


875 


59-7 


26.8 


43-1 


45 


45-2 


17-5 


7-9 


12.5 


900 


63.0 


28.2 


45-2 


475 


50.0 


19-3 


8-7 


13-8 


1,000 


76.5 


34-3 


55.0 


500 


55.0 


21.2 


9-5 


15.2 


1,100 


91.5 


41 .0 


65.5 



* Rough rubber lining is liable to increase the losses given in the table as 
much as 50 per cent. 

23 



DISCHARGE TABLE FOR SMOOTH NOZZLES. 



NOZZLE PRESSURE MEASURED BY PITOT GAGE. 



Nozzle 
ressure 
Ibs. per 
q. inch. 


NOZZLE DIAM. IN INCHES. 
1 1^ 1J4 1% 1^ 


Nozzle 
Pressure 
in Ibs. per 
sq. inch. 


NOZZLE DIAM. IN 
1 m 1J4 


INCHES. 
1% 


w 


Gallons 


per minute. 


Gallons per Minute. 


5 


66 


84 


103 


125 


149 


60 


229 


290 


3n7 


434 


517 


6 


72 


92 


118 


187 


163 


62 


233 


295 


363 


441 


525 


7 


78 


99 


122 


148 


176 


64 


287 


299 


369 


448 


533 


8 


84 


106 


131 


158 


188 


66 


240 


804 


875 


455 


542 


9 


89 


112 


139 


168 


200 


68 


244 


308 


881 


462 


550 


10 


93 


118 


146 


177 


211 


70 


247 


313 


386 


469 


558 


12 


102 


180 


160 


194 


231 


72 


251 


318 


391 


475 


566 


14 


110 


140 


173 


210 


249 


74 


254 


322 


897 


482 


574 


16 


118 


150 


185 


224 


267 


76 


258 


326 


402 


488 


582 


18 


125 


159 


196 


237 


283 


78 


261 


880 


407 


494 


589 


20 


182 


167 


206 


250 


298 


80 


264 


835 


418 


500 


596 


22 


189 


175 


216 


263 


818 


82 


268 


839 


418 


507 


604 


24 


145 


183 


226 


275 


327 


84 


271 


848 


423 


513 


611 


26 


151 


191 


235 


286 


840 


86 


274 


847 


428 


519 


618 


28 


157 


198 


244 


297 


353 


88 


277 


351 


483 


525 


626 


30 


162 


205 


253 


307 


365 


90 


280 


355 


438 


531 


633 


82 


167 


212 


261 


317 


877 


92 


288 


359 


448 


537 


640 


34 


172 


218 


269 


327 


889 


94 


286 


368 


447 


548 


647 


36 


177 


224 


277 


886 


400 


96 


289 


367 


452 


549 


654 


38 


182 


231 


285 


345 


411 


98 


292 


870 


456 


554 


660 


40 


187 


287 


292 


354 


422 


100 


295 


374 


461 


560 


667 


42 


192 


243 


299 


368 


432 


105 


303 


388 


478 


574 


683 


44 


196 


248 


806 


872 


442 


110 


810 


892 


484 


588 


699 


46 


200 


254 


313 


880 


452 


115 


317 


401 


495 


600 


715 


48 


205 


259 


320 


888 


462 


120 


324 


410 


505 


613 


780 


50 


209 


265 


826 


896 


472 


125 


331 


418 


516 


626 


745 


52 


213 


270 


333 


404 


481 


130 


337 


427 


526 


638 


760 


54 


217 


275 


339 


412 


490 


135 


843 


435 


536 


650 


775 


56 


221 


280 


845 


419 


499 


140 


350 


448 


546 


662 


789 


58 


225 


285 


351 


426 


508 


145 


356 


450 


556 


674 


803 


60 


229 


290 


357 


434 


517 


150 


362 


458 


565 


686 


817 



Assumed coefficient of discharge per cent. 
24 



.99 .99 



DISCHARGE TABLE FOR SMOOTH NOZZLES. 



NOZZLE PRESSURE MEASURED BY PITOT GAGE. 



Nozzle 
'ressure 
i Ibs. per 
sq. inch. 


NOZZLE DIAM. IN INCHES. 

m m m a 2& 


Nozzle 
Pressure 
in Ibs. per 
sq. inch. 


NOZZLE DIAM. IN 
1 1% 1% 


INCHES. 
2 2*4 


Gallons per Minute. 


Gallons per Minute. 


5 


175 


203 


234 


266 


337 


60 


607 


704 


810 


920 


1168 


6 


192 


223 


256 


292 


369 


62 


617 


716 


823 


936 


1188 


7 


207 


241 


277 


315 


399 


64 


627 


727 


836 


951 


1207 


8 


222 


257 


296 


336 


427 


66 


636 


788 


850 


965 


1225 


9 


235 


273 


814 


357 


452 ! 


68 


646 


750 


862 


980 


1243 


10 


248 


288 


380 


876 


477 


70 


655 


761 


875 


994 


1261 


12 


271 


315 


362 


412 


522 


72 


665 


771 


887 


1008 


1279 


14 


293 


340 


891 


.445 


564 


74 


674 


782. 


900 


1023 


1297 


16 


313 


364 


418 


475 


603 


76 


683 


792 


911 


1036 


1314 


18 


332 


386 


444 


504 


640 


78 


692 


808 


924 


1050 


1381 


20 


350 


407 


468 


532 


674 \ 


80 


700 


818 


935 


1063 


1848 


22 


367 


427 


490 


557 


707 


82 


709 


823 


946 


1076 


1865 


24 


384 


446 


512 


582 


739 


84 


718 


833 


959 


1089 


1381 


26 


400 


464 


533 


606 


769 


86 


726 


843 


970 


1102 


1897 


28 


415 


481 


554 


629 


799 


88 


735 


853 


981 


1115 


1418 


30 


429 


498 


572 


651 


826 


90 


743 


862 


992 


1128 


1430 


32 


443 


514 


591 


,673 


854 


92 


751 


872 


1002 


1140 


1446 


34 


457 


530 


610 


693 


880 


94 


759 


881 


1012 


1152 


1461 


36 


470 


546 


627 


713 


905 


96 


767 


890 


1022 


1164 


1477 


38 


483 


561 


645 


733 


930 


98 


775 


900 


1082 


1176 


1492 


40 


496 


575 


661 


752 


954 


100 


783 


909 


1043 


1189 


1507 


42 


508 


589 


678 


770 


978 


105 


803 


932 


1070 


1218 


1543 


44 


520 


603 


694 


788 


1000 


110 


822 


954 


1095 


1247 


1580 


46 


581 


617 


710 


806 


1021 


115 


840 


975 


1120 


1275 


1617 


48 


543 


630 


725 


824 


1043 


120 


858 


996 


1144 


1303 


1651 


50 


554 


643 


740 


841 


1065 


125 


876 


1016 


1168 


1829 


1685 


52 


565 


656 


754 


857 


1087 


130 


893 


1086 


1191 


1356 


1719 


54 


576 


668 


769 


878 


1108 


135 


910 


1056 


1218 


1382 


1752 


56 


586 


680 


782 


889 


1129 


140 


927 


1076 


1285 


1407 


1783 


58 


596 


692 


796 


905 


1149 


145 


944 


1095 


1257 


1432 


1815 


60 


607 


704 


810 


920 


1168 


150 


960 


1114 


1279 


1456 


1846 



Assumed coefficient of discharge per cent. 
25 



.995 .996 .997 .998 



[-INCH SMOOTH NOZZLE. 







PRESSURES REQUIRED AT HYDRANT OR 


1 >, 


c 
o 


MAINTAIN NOZZLE PRESSURES GIVEN 






LENGTHS OF BEST QUALITY 


^ r^A ^Q 


Otj 




11s 


g 

hp^>, 


Single 2^-inch Lines. 


!j~ 


Is. 




















IE; 1 "" 


.2 


IOO 


200 


300 


400 


500 


600 


700 


800 




Q 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet, 


20 


132 


25 


30 


35 


39 


44 


49 


53 


58 


25 


148 


3i 


37 


43 


49 


55 


60 


66 


72 


30 


162 


38 


44 


5i 


58 


65 


72 


78 


85 


35 


175 


44 


52 


59 


67 


75 


83 


9i 


98 


40 


187 


50 


59 


68 


77 


86 


94 


103 


112 


45 


198 


56 


66 


76 


86 


96 


1 06 


H5 


125 


50 


209 


62 


73 


84 


95 


106 


117 


128 


139 


55 


219 


68 


80 


92 


104 


116 


128 


140 


152 






















60 


229 


75 


88 


101 


114 


127 


140 


153 


166 


65 


238 


81 


95 


109 


123 


137 


151 


165 


179 


70 


247 


87 


1 02 


117 


132 


147 


162 


177 


I 9 2 


75 


256 


93 


109 


125 


141 


157 


173 


189 


205 


80 


264 


99 


116 


133 


150 


167 


183 


200 


217 


85 


272 


105 


123 


141 


159 


177 


195 


212 


230 


90 


280 


in 


130 


149 


167 


1 86 


205 


224 


243 


95 


287 


117 


137 


157 


177 


196 


216 


236 


2 5 6 


100 


295 


123 


144 


165 


185 


206 


227 


247 


268 



26 



2J/3- AND 3-INCH HOSE, 



FIRE ENGINE, WHILE STREAM is FLOWING, TO 




IN FIRST COLUMN, THROUGH VARIOUS 


| 


2|- AND 3-iNCH RUBBER LINED HOSE. 






t/i bJ3 




Single 3-inch Lines. 


Two 2^-inch 
Lines Siamesed. 


>- QJ rj 


1,000 


I,20O 


800 


1,000 


1,200 


1,500 


1,000 


1,500 


2,000 


1" 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 




68 


77 


35 


39 


42 


48 


33 


40 


46 


20 


84 


95 


43 


48 


52 


59 


4i 


49 


57 


25 


99 


112 


52 


57 


62 


70 


49 


59 


68 


30 


114 


I 3 


60 


66 


72 


81 


57 


68 


79 


35 


130 


148 


68 


75 


82 


92 


65 


78 


90 


40 






















145 


I6 5 


77 


84 


92 


103 


72 


86 


99 


45 


160 


182 


85 


93 


102 


114 


80 


95 


IIO 


50 


175 


199 


93 


102 


112 


125 


88 


105 


121 


55 


192 


218 


102 


112 


122 


137 


96 


114 


I 3 2 


60 


207 


235 


110 


121 


131 


148 


103 


122 


141 


65 


222 


252 


118 


130 


141 


159 


in 


I 3 2 


152 


70 


237 


269 


127 


139 


151 


170 


1 20 


142 


164 


75 


251 


285 


135 


148 


161 


181 


128 


151 


175 


SO 


266 


302 


143 


I 5 6 


170 


191 


135 


159 


184 


85 


280 


.... 


151 


I6 5 


1 80 


202 


H3 


169 


195 


90 


295 




158 


173 


189 


211 


150 


177 


204 


95 


3 IO 


... 


167 


I8 3 


199 


223 


157 


1 86 


215 


100 



27 



i 1/8-INCH SMOOTH NOZZLE. 





/> 


PRESSURES REQUIRED AT HYDRANT OR FIRE 


! 2 


o 


NOZZLE PRESSURES GIVEN IN FIRST 


1^ . 


1 j 


QUALITY T.\- AND 


*> o 


~. 


Single 2j-inch Lines. 


1| 


111 






5 


8 ? 


84> 
<U 


8 "S 


O Id 
5- W 


1 


|? 


J QJ 


O <u 


5 Id 
Q. <u 


N. <y 


20 


167 


"Is 


35 


42 


49 


56 


6 4 


71 


78 


92 


107 


25 


187 


35 


44 


53 


62 


71 


79 


88 


97 


H5 


133 


30 


205 


42 


52 


63 


73 


84 


95 


105 


116 


137 


158 


35 


221 


49 


61 


73 


85 


97 


IIO 


122 


134 


158 


183 


40 


237 


55 


69 


83 


96 


IIO 


124 


138 


i5i 


179 


206 


45 


251 


62 


77 


93 


108 


123 


139 


154 


169 


20O 


230 


50 


265 


69 


86 


103 


120 


137 


154 


171 


1 88 


222 


2 5 6 


55 


277 


76 


94 


112 


131 


149 


1 68 


1 86 


204 


241 


2 7 8 


60 


290 


83 


103 


123 


143 


163 


183 


203 


223 


263 


304 


65 


301 


89 


in 


I 3 2 


154 


175 


197 


218 


240 


283 


326 


























70 


313 


96 


119 


142 


165 


1 88 


211 


234 


257 


303 





75 


324 


103 


128 


152 


177 


202 


227 


252 


276 


325 





80 


335 


no 


136 


162 


1 88 


215 


241 


267 


294 






85 


345 


116 


144 


171 


199 


226 


254 


282 


3<>9 


... 





90 


355 


123 


152 


181 


210 


240 


269 


298 


327 










95 


365 


130 


160 


191 


222 


252 


283 


3M 














100 


374 


136 


1 68 


20 1 


233 


265 


297 


329 















28 



a 1/2- AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 


=0 


COLUMN, THROUGH VARIOUS LENGTHS OF BEST 


"c Sf 


3-iNCH RUBBER LINED HOSE. 


3 O 


Single 3-inch Lines. 


Two 2j-inch Lines 
Siamesed. 


|l 


8tj 
D 


$ 


Bi 


ti 


\$ 


i% 


8* 


8<u 
<u 


6 "a; 
O <u 


8? 


8ti 

i-n aj 


8* 


O rt 


^fe 


3 


*> 


~ 






M -fc 


OOfc 


~fe 


~ 




~& 


* U 


32 


37 


43 


48 


54 


62 


71 


38 


42 


4 6 


53 


60 


20 


40 


46 


53 


60 


67 


77 


87 


45 


50 


55 


63 


70 


25 


47 


55 


63 


71 


79 


9i 


103 


53 


59 


65 


74 


82 


30 


55 


65 


74 


83 


93 


107 


121 


62 


69 


76 


86 


9 6 


35 


63 


73 


84 


95 


105 


121 


137 


70 


78 


86 


97 


1 08 


40 


70 


82 


94 


1 06 


118 


135 


153 


79 


87 


95 


108 


121 


45 


78 


9i 


104 


117 


130 


150 


169 


88 


98 


107 


121 


135 


50 


86 


100 


114 


128 


142 


164 


185 


96 


107 


117 


132 


H7 


55 


93 


109 


124 


139 


155 


I 7 8 


2O I 


105 


116 


127 


143 


1 60 


60 


101 


117 


134 


151 


167 


I 9 2 


217 


114 


126 


138 


I 5 6 


174 


65 


108 


126 


144 


162 


1 80 


206 


233 


122 


135 


148 


I6 7 


1 86 


70 


116 


135 


154 


173 


192 


221 


249 


130 


144 


157 


I 7 8 


198 


75 


124 


144 


165 


185 


206 


236 


267 


I 3 8 


153 


167 


189 


210 


SO 


131 


153 


174 


195 


217 


249 


28l 


147 


163 


178 


201 


22; 


85 


139 


161 


184 


207 


229 


263 


2 97 


156 


172 


1 88 


212 


237 


90 


146 


170 


194 


218 


242 


277 


313 


I6 4 


181 


198 


224 


249 


95 


154 


178 


203 


228 


253 


20\3 





172 


190 


208 


235 


26 


100 



29 



I 1/4-INCH SMOOTH NOZZLE. 



1-1 O 


n 

J 


PRESSURES REQUIRED AT HYDRANT OR FIRE 
PRESSURES GIVEN IN FIRST COLUMN, 


<u jz bo 

*N y 

o "^ 


Discharge, Gal 
per Minute 


Z\- AND 3-INCH 


Single 2^-inch Lines. 


1 


8| 


>! 


M 


-1 


Jti 
<u 

1*4 


8 "Jo 
1> 


II 


II 


y 


20 


206 


32 


42 


53 


64 


75 


85 


96 


107 


128 


149 


25 


230 


40 


53 


66 


79 


92 


105 


118 


131 


158 


184 


30 


253 


48 


63 


79 


95 


IIO 


126 


142 


157 


189 


220 


35 


273 


55 


73 


9i 


109 


127 


H5 


163 


181 


217 


253 


40 


292 


63 


83 


104 


124 


144 


165 


185 


206 


246 


287 


45 


309 


70 


93 


116 


138 


161 


183 


206 


229 


274 


319 


50 


326 


78 


103 


128 


J53 


178 


203 


228 


253 


303 




55 
60 
65 
70 
75 
80 
85 
90 
95 
100 


342 
357 
372 
386 

399 
413 

438 

461 


86 
93 

IOI 

108 
116 
124 

139 

153 


123 

133 
142 
152 

163 
172 
182 
191 

201 


140 
152 
164 
176 
1 88 

201 

225 
236 

248 


167 
182 
196 

2IO 
224 
240 

254 
269 
282 
295 


194 

211 
228 

244 
26l 
279 

312 
327 


222 
241 
260 
2 7 8 
297 
318 


249 
270 
292 
312 
333 


276 
300 
323 


330 












































































30 



a 1/2- AND 3-INCH HOSE, 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN NOZZLE 
THROUGH VARIOUS LENGTHS OF BEST QUALITY 
RUBBER LINED HOSE. 


Nozzle Pressure In- 
dicated by Pitot Gage. 


Single 3-inch Lines. 


Two 2^-inch Lines 
Siamesed. 


|| 


Jti 



$i 


0^ <u 


f^ <U 


Q +J 
u- u 


8 

00 <U 


|| 


l| 


"oj 
<u 


ts_ <u 


8* 


O 1u 

OO <u 


37 


4 6 


54 


62 


70 


83 


95 


39 


45 


51 


57 


76 


20 


47 


57 


67 


77 


87 


102 


117 


48 


55 


62 


70 


80 


91 


25 


56 


68 


81 


93 


105 


123 


142 


57 


66 


74 


83 


96 


109 


30 


65 


79 


92 


106 


1 20 


141 


161 


66 


76 


86 


95 


IIO 


125 


35 


74 


89 


105 


1 20 


136 


159 


183 


75 


87 


99 


no 


127 


144 


40 


83 


IOO 


117 


135 


152 


I 7 8 


204 


84 


96 


109 


121 


140 


158 


45 


9i 


in 


130 


149 


1 68 


197 


226 


93 


107 


121 


135 


155 


176 


50 


100 


121 


142 


163 


184 


216 


247 


102 


117 


132 


H7 


169 


192 


55 


109 


I 3 2 


155 


178 


201 


235 


270 


III 


128 


144 


160 


185 


210 


60 


118 


H3 


167. 


192 


217 


254 


291; 


120 


137 


155 


173 


199 


225 


65 


127 


154 


1 80 


206 


233 


272 





I2 9 


147 


1 66 


185 


213 


241 


70 


136 
H5 
153 
162 
170 
179 


164 

184 

195 
205 

215 


192 
205 
216 
228 
240 
252 


220 

247 
261 

275 
288 


248 
265 
279 
295 


290 




137 
147 
I 5 6 

173 
182 


157 
169 
179 
189 
198 
208 


177 
190 

201 
2I 3 

235 


197 

212 

224 

237 
2 4 8 
26l 


227 
244 

258 

273 
286 
300 


257 
2 7 6 
2 9 2 
309 


75 

80 
85 
90 
95 
100 



























I 3/8-INCH SMOOTH NOZZLE. 



1! & 


CO 

G 
O 


PRESSURES REQUIRED AT HYDRANT OR FIRE 
NOZZLE PRESSURES GIVEN IN FIRST 


Nozzle Pressure 
cated by Pitot G 


W;^ 
rt j_ 

ll 

5 


QUALITY 2|- AND 


Single 2^-inch Lines. 




il 










| 


Q u 

IM! 


l| 


8~OJ 
4) 


l| 


8| 


O dj 
O aj 
00 h 


1 


-1 


20 


250 


37 


52 


68 


83 


98 


H3 


128 


144 


34 


45 


25 


280 


46 


64 


83 


I O2 


121 


139 


158 


177 


41 


56 


30 


307 


55 


77 


99 


121 


144 


1 66 


1 88 


210 


50 


67 


35 


331 


64 


89 


H5 


140 


1 66 


191 


217 


242 


58 


78 


40 


354 


73 


1 02 


131 


1 60 


189 


218 


247 


2 7 6 


67 


89 


45 


376 


81 


H4 


146 


I 7 8 


211 


243 


275 


307 


74 


99 


50 


396 


90 


125 


161 


I 9 6 


222 


257 


293 


328 


82 


109 


55 
60 
65 
70 
75 
80 
85 
90 
95 
100 


434 

469 

485 
500 

546 
560 


99 
107 
116 

134 
142 

151 
159 
168 
177 


137 
149 
161 
173 
185 
196 
209 

220 
232 
244 


176 
191 

222 

237 
251 

28l 

297 
312 


215 

270 

305 
325 
1 . . . 


254 
2 7 6 
2 9 7 
319 


292 


33: 





90 
98 
1 06 
114 

122 
130 
138 
I 4 6 

162 


121 

141 
152 
162 
172 

194 
203 
215 









































































32 



2 1/2- AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 
COLUMN, THROUGH VARIOUS LENGTHS OF BEST 
3-iNCH RUBBER LINED HOSE. 


T3 V 

HH 0? 

II 

p 

20 


Single 3-inch Lines. 


Two 2|-inch Lines Siamesed. 


ll 


Q <L> 


O "a; 


! 


8s 

*O u 


ll 

^Tr T . 

37 


Q S 

O oj 
vO [^ 


II 


s 


1 


M 


O <u 
00 OJ 


57 


68 


80 


92 


109 


4 6 


54 


63 


71 


8 4 


96 


70 


85 


99 


113 


135 


46 


57 


67 


78 


88 


104 


119 


25 


84 


101 


118 


135 


161 


56 


68 


81 


93 


106 


124 


H3 


30 


97 


117 


137 


157 


187 


65 


80 


94 


1 08 


122 


143 


165 


35 


112 


134 


157 


1 80 


214 


74 


90 


106 


122 


138 


162 


1 86 


40 


125 


150 


175 


200 


238 


83 


IOI 


119 


137 


155 


182 


209 


45 


137 


164 


192 


220 


267 


92 


in 


131 


151 


171 


201 


230 


50 


151 


182 


212 


242 


288 


100 


122 


144 


I6 5 


I8 7 


2I 9 


252 


55 


I6 3 


196 


229 


262 





109 


133 


156 


1 80 


203 


2 3 8 


273 


60 


177 


212 


247 


282 





118 


H3 


1 68 


I 9 4 


219 


257 


294 


65 


189 

215 
22 9 
241 

267 


227 

257 
274 
289 

34 


265 
300 


303 





128 
137 
H5 
153 
162 
170 
179 


155 
I6 5 

175 

1 86 
196 

217 


182 
194 
206 

230 

241 
254 


209 

223 

250 

264 

277 
291 


252 
266 

298 
3^3 
329 


277 

295 
3 I2 


317 


70 
75 
80 

85 
90 
95 
100 


... 












































33 



i/2-INCH SMOOTH NOZZLE.- 



'O flJ 

l 


en 
3 

rt -j*j 

c3 - 

S8. 


PRESSURES REQUIRED AT HYDRANT OR FIRE 
NOZZLE PRESSURES GIVEN IN FIRST 
QUALITY 2^- AND 


Single 2$-inch Lines. 


Single 
























N C 

II 


1 


y 


8| 


-1 


| 


^ 


-1 


-1 


3| 


y 


^1 


<! 


20 


298 


44 


65 


86 


107 


128 


149 


170 


I 9 I 


39 


55 


71 


25 


333 


54 


80 


106 


132 


158 


184 


210 


2 3 6 


48 


68 


88 


30 


365 


65 


95 


126 


157 


188 


219 


250 


280 


58 


81 


105 


35 


394 


75 


no 


145 


181 


216 


251 


287 


322 


67 


94 


122 


40 


422 


85 


126 


166 


206 


246 


286 


327 





76 


107 


139 


45 


447 


96 


141 


185 


230 


275 


320 






85 


120 


155 






50 


472 


106 


155 


205 


254 


304 








95 


133 


171 








55 


494 


116 


170 


224 


278 


332 








104 


H5 


I8 7 








GO 


517 


126 


184 


242 


301 










H3 


I 5 8 


203 










65 


537 


136 


198 


261 


324 










122 


170 


218 










70 


g 


146 


21 ^ 


281 












I 3 I 


iS^ 


2 35 


75 


r-78 


156 




2QQ 












I4O 


TQ6 


251 


80 




1 66 


2A2 


1T8 












I4Q 


7,08 


267 


85 


614 


176 


257 


337 












158 


220 


282 












90 


6 


187 


272 














167 


? 33 


208 


95 


6m 


1 07 
















T76 


2 45 


314 


100 


667 


207 


300 









. 








185 


257 





34 



2 1/2- AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 
COLUMN, THROUGH VARIOUS LENGTHS OF BEST 


.i oJ 


3-iNCH RUBBER LINED HOSE. 


1' Nozzle Pressure 
cated by Pitot C 


3-inch Lines. 


Two 2^-inch Lines Siamesed. 










i 






_ 


_ 






II 
~87 


g QJ 
q QJ 


O QJ 
C* QJ 


<u 


&| 


O <U 

O qj 


^ 


3! 


1 


^ 


"OJ 


OO QJ 


104 


120 


144 


33 


45 


56 


68 


79 


9i 


108 


126 


108 


128 


148 


178 


41 


56 


70 


84 


99 


H3 


135 


I 5 6 


25 


129 


153 


177 


212 


49 


66 


83 


IOO 


117 


134 


160 


I8 5 


30 


149 


177 


204 


245 


57 


77 


9 6 


116 


135 


155 


184 


214 


35 


170 


201 


232 


279 


65 


88 


no 


132 


155 


177 


211 


244 


40 


189 


224 


2 5 8 





73 


97 


122 


146 


171 


196 


233 


26 9 


45 


209 

228 
248 
267 

307 


247 
270 

293 


286 





81 
88 
96 
104 

112 
120 
127 

H3 
152 
1 60 


108 
118 
128 

149 
160 
170 
179 
190 

201 
212 


136 
148 

161 

J74 
1 86 
199 

212 
224 

237 
251 
264 


163 
178 

193 
208 
223 
239 
254 

301 
316 


190 
208 
225 
243 

279 
296 

3i3 


218 
237 

257 
278 


259 
282 

305 


300 

327 


50 
55 
60 
65 
70 
75 
80 
85 
90 
95 
100 



















.... 


.... 























































































35 



5/8-INCH SMOOTH NOZZLE. 



~5 u 

C M 

HH re 

|| 

ii 

cti 

20 
25 
30 
35 
40 
45 
50 
55 
60 
65 
70 
75 
80 
85 
90 
95 
100 


jO 

o| 

C 

D 

35o 
392 
429 

463 
496 
525 
554 
581 
607 
631 
655 
678 

722 
743 

783 


PRESSURES REQUIRED AT HYDRANT OR FIRE 
NOZZLE PRESSURES GIVEN IN FIRST 
QUALITY 2^- AND 


Single 2^-inch Lines. 


Single 3-inch 






, 




. 




8| 


ll 


" 
r <u 


112 

138 
164 
189 
215 

239 
265 
290 


| 


8 8 


C 


$ 


&l 


31 


52 
65 
77 
89 

101 

113 

125 
137 

162 

173 
184 

209 

220 
244 


80 

IOO 

118 
136 
155 
173 
192 

210 
228 
2 4 6 
263 
28l 


1 08 

135 

1 60 
184 

208 

233 
258 
282 
306 
330 


136 
170 
20 1 
231 
262 

293 

324 


i6 5 
205 
242 
279 
316 


193 
240 

284 
326 


46 
57 
68 

78 
89 

IOO 

in 

121 
132 
143 
153 
163 

174 

195 
205 

216 


68 
84 

IOO 

115 

146 
162 

178 
193 

209 

223 
237 

284 
299 

3H 


90 
III 
132 
152 

173 
193 

214 

234 
254 

275 
294 
312 





























































.... 


.... 


































36 



2 i/2= AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 
COLUMN, THROUGH VARIOUS LENGTHS OF BEST 
3-iNCH RUBBER LINED HOSE. 




'N ^ CH 

s ^ 


Lines. 


Two 2^-inch Lines Siamesed. 


|| 


^1 ^ 


8| 


o ID 

O QJ 


O QJ 


s| 


|| 


N OJ 


II 


8- 
<u 
oo <u 


134 
165 
196 
226 

257 
286 


156 

192 
228 
263 
299 


37 
47 
56 
65 

74 
82 

100 

109 
118 

135 

153 
162 
170 
179 


53 
66 

79 

104 
116 
128 

140 

153 
164 
176 
189 
20 1 
213 
225 

237 
249 


68 
85 

102 
117 

134 
149 
I6 5 

181 
196 

211 
226 
242 
2 5 8 
273 

319 


84 

104 

125 

144 

164 
182 

202 
221 

240 

295 


100 

123 
148 
170 
194 
215 
239 


143 
171 
197 

224 
248 
275 

327 


139 
171 

205 

269 

298 
331 


162 

200 

240 
276 


20 
25 
30 
35 
40 
45 
50 
55 
60 

70 
75 

80 
85 
90 
95 
100 
























































































































37 



I 3/4-INCH SMOOTH NOZZLE, 



if 

O cti 


i 

e3 >_ 

J* 

Q 


PRESSURES REQUIRED AT HYDRANT OR FIRE 
NOZZLE PRESSURES GIVEN IN FIRST 
QUALITY 2%- AND 


Single 2^-in. Lines. 


Single 3-inch 




. 






. 


*J 1 .: 








D 


-1 


M 


1 


1 


O <u 
O oj 


M 


O <n 
O <u 


5j 


O (L) 

^O r^ 


20 


407 


63 


100 


138 


175 


40 


55 


71 


86 


101 


116 


25 


455 


77 


123 


169 


215 


49 


67 


8 4 


102 


120 


138 


30 


498 


9i 


145 


199 


253 


58 


79 


100 


121 


142 


163 


35 


538 


106 


169 


231 


294 


68 


92 


117 


141 


1 66 


190 


40 


575 


120 


191 


262 


333 


77 


104 


132 


159 


187 


215 


45 


609 


135 


215 


294 





87 


118 


149 


180 


211 


241 


50 
55 
60 
65 
70 
75 
80 
85 
90 
95 
100 


643 
674 
704 

732 
761 

787 
813 
838 
862 

909 


ISO 
164 
177 

206 
220 

234 
247 
26l 
274 


237 
259 
280 
302 
325 


325 




96 
105 
114 
123 
133 
143 
152 
1 60 
169 
178 
188 


130 

142 

154 
1 66 
1 80 
192 
204 

215 
228 
240 
253 


164 

179 
194 
209 

227 
242 

257 
270 

317 


199 

216 

234 
252 

273 
2 9 I 

309 


233 
254 
274 
2 9 6 


267 
291 






.... 


.... 




















... 


















































38 



2 1/2- AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 


T3 J. 


COLUMN, THROUGH VARIOUS LENGTHS OF BEST 


^ 


3-iNCH RUBBER LINED HOSE. 


c2 






w is 


Lines. 


Two 2^-inch Lines Siamesed. 


S 






f-S 1 
























S? 


8 ft 


O <L> 

O <u 


8 $ 


ft 


8ft 


O nj 
O D 


O a; 
O aj 


8^ 


8 ft 


O <u 


w 


N 

o 


**fa 


w"^ 


rj* 


M fe 


rfc 


^fe 


^ % U- 


vo ^ 





nTfcu 


~fe 


2: 


147 


177 


33 


43 


53 


64 


74 


84 


105 


125 


I 4 6 


20 


173 


20 9 


40 


53 


65 


78 


9i 


103 


128 


154 


179 


25 


205 


247 


49 


64 


79 


94 


IIO 


125 


155 


I8 5 


215 


30 


239 


288 


56 


74 


9i 


109 


126 


143 


178 


213 


248 


35 


270 


325 


64 


84 


103 


123 


143 


162 


201 


241 


280 


40 


303 





73 


95 


117 


139 


161 


183 


227 


271 


315 


45 






80 


104 


128 


152 


177 


201 


249 


2 9 7 





50 










88 


114 


I4.O 


167 


IQ-J 


2IQ 


272 


32/1 




55 






96 


I2K 


I C? 


18^ 


2IO 


*5* 

27Q 


?o6 


J-^4 




60 






IOJ. 


1 74. 


16: 


IQC 


->->6 


2C7 


118 






65 






Ill 


T 44 


177 


2IO 


24.^ 


*JI 

27 C 


j 1 w 






70 






118 


I 13 


1 88 


22T. 


^r.8 


2Q-2 








75 






127 


1 6/1 


2OI 


2-3Q 


0-76 


^yj 

5 T -3 








SO 






I?C 


174. 


214, 


^JV 
2C7 


2QT. 


J 1 J 








85 






142 


783 


22EJ 


?66 


708 










90 






I CQ 


104 


237 


^81 












95 






I 5 8 


204 


250 


296 












100 















39 



2-INCH SMOOTH NOZZLE.- 



^ & 


c/> 


PRESSURES REQUIRED AT HYDRANT OR FIRE 


% 





NOZZLE PRESSURES GIVEN IN FIRST 


4,0 

v- .,_, 


"3 


QUALITY 2|- AND 


5 


O 3 




ll 

fijp 


&s 

rt >-. 


Single 2^- 
inch Lines. 


Single 3-inch Lines. 


OJ 


_c <u 






11 


01 

Q 


100 


200 


300 


IOO 


2OO 


300 


400 


500 


o 




Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


Feet. 


20 


532 


90 


152 


214 


52 


76 


IOO 


124 


148 


25 


594 


in 


187 


263 


65 


94 


123 


152 


182 


30 


651 


132 


222 


312 


77 


112 


147 


181 


216 


35 


703 


152 


255 




89 


I2 9 


169 


209 


249 


40 


752 


173 


200 





102 


147 


193 


238 


283 


45 


797 


193 


323 





I'3 


I6 3 


213 


263 


3H 


50 


841 


214 






126 


182 


237 


293 








55 


88 1 










138 


199 


260 


321 





60 


Q2O 








i ;o 


216 


282 






65 


QCg 








162 


2^ 


2Q4. 






70 


004 








I7C 


251 


-227 






75 


I O2Q 








187 


268 








80 


I 06"? 








I on 


285 








85 


I OQS 








211 


-2Q2 








90 


1,128 








22 3 


319 




















95 


i i;8 








27C 


32C 








100 


1,189 








247 

























40 



2 1/2- AND 3-INCH HOSE. 



ENGINE, WHILE STREAM is FLOWING, TO MAINTAIN 
COLUMN, THROUGH VARIOUS LENGTHS OF BEST 
3-iNCH RUBBER LINED HOSE. 


^ 
SSP 

1.1 

O Q. 

^ 

"2 

o *i 
fc 8 




Two 2^-inch Lines Siamesed. 


600 
Feet. 


800 
Feet. 


100 

Feet. 
4i 
5i 
61 

7i 
81 
90 

IOO 
IIO 

119 
129 

139 

148 

158 
167 
177 

1 86 
196 


200 
Feet. 


300 

Feet. 


400 
Feet. 


500 
Feet. 


600 

Feet. 


800 
Feet. 


1,000 

Feet. 


172 

211 

251 

289 


220 

270 
321 


58 
72 
86 

IOO 

US 

126 
140 

153 
1 66 
1 80 

193 
206 
219 
232 

245 
258 
272 


75 
93 
no 
128 
146 
162 
1 80 
197 
213 
230 
248 
264 
280 
297 
3H 


92 
114 

135 
157 
178 
198 
220 
240 
260 
281 
302 
322 


no 

135 
1 60 
1 86 

211 

234 
260 
284 
308 


127 
156 
185 
214 

243 
270 
300 


161 
198 

234 
271 
308 


195 

240 
284 
329 


20 
25 
30 
35 
40 
45 
50 
55 
60 
65 
70 
75 
80 
85 
90 
05 
100 

























































































































































1/4-INCH SMOOTH NOZZLE 3 1/2-INCH HOSE. 



1 




PRESSURES REQUIRED AT HY- 






C/5 


DRANT OR FIRE ENGINE, WHILE 


-5 J3JT) 


5 nf 


O 


STREAM IS FLOWING, TO MAIN- 


hS r^ 


<uO 


11 


TAIN NOZZLE PRESSURES GIVEN IN 


<u^ 


IS 


CD 

CH 


FIRST COLUMN, THROUGH VARIOUS 


P 




bjo^ 


LENGTHS OF BEST QUALITY 3!- 





>, 


rt <u 


INCH RUBBER LINED HOSE. 


* 


~ 


<*" C 

o 


. 
















u 

73 "S 


N 


s 


O <u 


"cu 
O <u 




Os^ 


"C 

O^ qj 


N 


ir\ <U 


Jnj 
o; 


9* 


& 




VO [T ( 




fe 


fe 


*(* 


~"fc 


~^ 


rffc 


Z o 


20 


206 


32 


34 


36 


37 


39 


43 


49 


55 


20 


25 


230 


39 


42 


44 


46 


48 


53 


60 


67 


25 


30 


253 


47 


49 


52 


55 


58 


63 


7i 


79 


30 


35 


273 


54 


57 


60 


64 


67 


73 


82 


9i 


35 


40 


292 


62 


65 


69 


72 


76 


83 


93 


104 


40 


45 


309 


69 


73 


77 


81 


85 


93 


104 


116 


45 


50 


326 


77 


81 


85 


90 


94 


1 02 


H5 


128 


50 


55 


342 


84 


89 


94 


99 


103 


112 


126 


141 


55 


60 


357 


92 


97 


IO2 


107 


112 


122 


137 


153 


60 


65 


372 


99 


105 


no 


116 


121 


132 


149 


165 


65 


70 


386 


107 


H3 


118 


124 


130 


142 


160 


177 


70 


75 


399 


114 


1 20 


127 


133 


139 


152 


171 


190 


75 


80 


413 


122 


128 


135 


142 


148 


162 


182 


202 


80 


85 


425 


128 


135 


142 


149 


I 5 6 


170 


191 


212 


85 


90 


438 


136 


H3 


151 


158 


I6 5 


1 80 


202 


225 


90 


95 


449 


H3 


151 


159 


167 


175 


190 


214 


237 


95 


100 


461 


151 


159 


167 


175 


184 


20O 


225 


249 


100 



42 



i 3/8-INCH SMOOTH NOZZLE. 3 1/2-INCH HOSE. 



4 a 


C/l 


PRESSURES REQUIRED AT HYDRANT OR 


.i oJ 


C SjjQ 


d 


FIRE ENGINE, WHILE STREAM is FLOW- 


rt 


<uO 


= oJ 


ING, TO MAINTAIN NOZZLE PRESSURES 


(yO 


3 "*~" 


03 


GIVEN IN FIRST COLUMN, THROUGH 


3 "o 


'~ 


.s 


VARIOUS LENGTHS OF BEST QUALITY 


$ 


>, 


b/)S 


3^-iNCH RUBBER LINED HOSE. 


>> 


p 


IS, 




fsj -4_) 


















Q *j 




Q 


Q <u 
% ** 


Q 

O <U 


^ 


&! 


^ 


O D 


o5 

N <u 


$ 

ir-. <u 


1 




20 


250 


31 


34 


36 


39 


41 


47 


52 


60 


67 


20 


25 


280 


39 


42 


45 


49 


52 


59 


65 


75 


85 


25 


30 


307 


46 


50 


54 


58 


62 


70 


78 


89 


101 


30 


35 


33i 


54 


58 


63 


67 


72 


81 


90 


103 


117 


35 


40 


354 


61 


66 


71 


76 


81 


9i 


101 


116 


131 


40 


45 


376 


69 


74 


80 


85 


9i 


102 


H3 


130 


147 


45 


50 


396 


76 


82 


88 


95 


101 


H3 


126 


144 


163 


50 


55 


415 


84 


90 


97 


104 


in 


124 


138 


158 


179 


55 


60 


434 


9i 


98 


106 


113 


121 


'35 


150 


172 


195 


60 


65 


45i 


98 


106 


114 


122 


130 


I 4 6 


161 


185 


209 


65 


70 


469 


106 


114 


123 


131 


140 


157 


174 


199 


225 


70 


75 


485 


113 


122 


131 140 


149 


I6 7 


185 


212 


239 


75 


80 


500 


120 


130 


140 


149 


159 


I 7 8 


197 


226 


255 


80 


85 


516 


127 


138 


148 


158 


1 68 


1 88 


208 


239 


269 


85 


90 


53i 


135 


I 4 6 


156 


167 


178 


199 


221 


253 


285 


90 


95 


546 


142 


153 


165 


176 


187 


209 


232 


266 


299 


95 


100 


560 


150 


161 


173 


185 


197 


220 


244 


279 


315 


100 



43 



1/2-INCH SMOOTH NOZZLE 3 i/a-INCH HOSE. 



-o ^ 


crt 

c 


PRESSURES REQUIRED AT HY- 
DRANT OR FIRE ENGINE, WHILE 


fi tuo 


2 


JD . 


STREAM IS FLOWING, TO MAIN- 
TAIN NOZZLE PRESSURES GIVEN IN 


1 1 Cti 



*"1 "ti 


~N <L> 

N *2 

|S 


cti <U 

A CX 

i 
a 


FIRST COLUMN, THROUGH VARIOUS 
LENGTHS OF BEST QUALITY 3^- 
INCH RUBBER LINED HOSE. 


11 

v "C 
T3 <u 






. 


. 


o 


o 




o 


&! 


M 


<u 


^1 


$ 


* 


iD 

? 


OO QJ 


20 


298 


28 


36 


43 


50 


58 


65 


7 6 


87 


20 


25 


333 


35 


44 


53 


62 


71 


80 


93 


107 


25 


30 


365 


42 


53 


63 


74 


85 


96 


112 


128 


30 


35 


394 


49 


61 


73 


86 


9 8 


III 


129 


148 


35 


40 


422 


55 


69 


83 


97 


in 


125 


146 


167 


40 


45 


447 


62 


78 


93 


109 


125 


140 


164 


187 


45 


50 


472 


69 


86 


103 


121 


138 


155 


181 


207 


50 


55 


494 


76 


94 


113 


132 


151 


170 


198 


226 


55 


60 


517 


82 


1 02 


123 


H3 


i6 3 


183 


214 


244 


60 


65 


537 


89 


in 


133 


154 


i 7 6 


198 


231 


263 


65 


70 


558 


96 


119 


143 


1 66 


189 


213 


248 


283 


70 


75 


578 


103 


128 


153 


178 


203 


228 


265 


303 


75 


80 


596 


109 


136 


162 


1 88 


215 


241 


281 




80 


85 


614 


116 


144 


172 


200 


228 


256 


298 





85 


90 
95 
100 


633 
650 
667 


123 
129 
136 


152 
1 60 
168 


182 
191 

201 


211 

222 
233 


241 

253 
265 


271 
284 
298 







90 
95 
100 






44 



3/4-INCH SMOOTH NOZZLE 3 i/3-INCH HOSE. 



.i <J 

T3 bJO 


Crt 

gH 


PRESSURES REQUIRED AT HYDRANT OR 


.JL . 

o i> 


C rt 


o 


FIRE ENGINE, WHILE STREAM is FLOW- 


c bo 

HH C3 


2 


*a 


ING, TO MAINTAIN NOZZLE PRESSURES 


0^0 


SB 


g 


GIVEN IN FIRST COLUMN, THROUGH 


l 





& 


VARIOUS LENGTHS OF BEST QUALITY 


E 




OJ T3 


ow^ 

Jfc 

o & 


3^-iNCH RUBBER LINED HOSE. 


^^ 

<u _. 


"N <u 
rt 
1 


on 

s 


83 

~fc 


O <u 

O <u 

N fc 


8 $ 

C0 fe 


Q tu 

* 


80J 
O 

^k< 


8 g 

vOfe 


^ +i 
O <U 

Afi 


g > 
o <u 

2-fe 


0) 
M > 

_-fe 


S2 

O rt 

55 y 


20 


407 


28 


35 


41 


4 8 


54 


61 


74 


87 


101 


20 


25 


455 


35 


43 


51 


59 


67 


75 


9i 


107 


123 


25 


30 


498 


4i 


Si 


60 


70 


79 


89 


1 08 


127 


146 


30 


35 


538 


48 


59 


70 


81 


92 


103 


124 


146 


168 


35 


40 


575 


55 


67 


80 


92 


105 


117 


142 


167 


191 


40 


45 


609 


62 


75 


89 


103 


117 


131 


158 


1 86 


213 


45 


50 


643 


68 


84 


99 


H5 


130 


H5 


176 


206 


237 


50 


55 


674 


75 


92 


109 


125 


142 


159 


192 


225 


259 


55 


60 


704 


82 


IOO 


118 


136 


154 


172 


208 


244 


280 


60 


65 


732 


89 


1 08 


127 


147 


1 66 


1 86 


224 


263 


302 


65 


70 


761 


95 


116 


137 


158 


178 


199 


241 


282 





70 


75 


787 


102 


124 


146 


1 68 


190 


212 


257 


301 





75 


80 


813 


109 


132 


156 


179 


203 


226 


273 


320 





80 


85 


838 


He 


140 


165 


IQO 


214 


2^Q 


289 






85 


90 


vjv 
862 


f 
122 


T^ 

148 


174 


y 

2OO 


**F 

227 


"jy 
2C'? 


-2 QC 






90 


95 


885 


128 


J. tj\J 

I 5 6 


* / H 

183 


211 


m+ 

238 


*j J 
266 


J^J 






95 








100 


909 


135 


164 


193 


222 


251 


280 








100 









45 



5/8-INCH SMOOTH NOZZLE.- 3 1/2-INCH HOSE. 



1 

-^ fll 


C/3 


PRESSURES REQUIRED AT HY- 


, 


a I* 


a 


DRANT OR FIRE ENGINE, WHILE 


"e ^ 


HH C5 


~ 


STREAM IS FLOWING, TO MAIN- 


> i ^ 


^ *j 


cti qj 


TAIN NOZZLE PRESSURES GIVEN IN 


^ 


|2 


G 


FIRST COLUMN, THROUGH VARIOUS 


g| 


cu PH 


h/)^5 


LENGTHS OF BEST QUALITY 3^- 


<u (^ 


PH_>> 


>- u, 


INCH RUBBER LINED HOSE. 


p^ > 


Hi 


I s " 




11 






























8 t- 5 


O oj 

55 


5 





II 


\O f T 


J3J 
CU 
[ T) 


O^ a; 


5l 


^^ 


O aj 

CXD <L> 




20 


350 


3i 


41 


50 


60 


70 


so 


94 


109 


20 


25 


392 


38 


5i 


63 


75 


87 


99 


118 


136 


25 


80 


-429 


46 


60 


75 


89 


103 


118 


139 


161 


80 


85 


463 


53 


70 


86 


103 


120 


136 


161 


1 86 


85 


40 


496 


61 


79 


98 


117 


136 


155 


183 


211 


40 


45 


525 


68 


89 


no 


131 


152 


173 


205 


2 3 6 


45 


50 


554 


76 


99 


122 


H5 


1 68 


192 


226 


26l 


50 


55 


581 


83 


1 08 


133 


158 


184 


209 


247 


284 


55 


60 


607 


90 


117 


144 


172 


199 


226 


267 


308 


60 


65 


631 


97 


127 


I 5 6 


1 86 


215 


244 


289 





65 


70 


655 


105 


136 


I6 7 


199 


230 


262 


309 





70 


75 


678 


112 


I4C. 


170 


212 


24 5 


270 






75 


80 


700 




*T J 

ICC 


/ S 

IQI 


226 


i J 

262 


/ ;/ 






80 


85 


/ 

722 


127 


j j 


y 
2O2 




278 


16 






85 


90 


/ ^^ 

74. -2 


1 1. / 


174. 


214. 


2CA 


** 1 \j 

204- 








90 


95 


/ *T J 
763 


141 


/ T" 

183 


** x *T 

225 


*" J'T 
267 


JfT 

309 








95 








100 


783 


149 


193 


237 


28l 










100 











46 



2-INCH SMOOTH NOZZLE.- 3 I/2-INCK 



C fcuo 
>-. " 
11 


Discharge, Gallons 
per Minute. 


PRESSURES REQUIRED AT HY- 
DRANT OR FIRE ENGINE, WHILE 
STREAM IS FLOWING, TO MAINTAIN 
NOZZLE PRESSURES GIVEN IN FIRST 
COLUMN, THROUGH VARIOUS 
LENGTHS OF BEST QUALITY 3^- 
INCH RUBBER LINED HOSE. 


^ bio 
^0 


| 


| 


>! 


l| 


8| 


O al 

v ^ 

C T I 


l| 


II 


20 


532 


33 


44 


55 


65 


76 


87 


109 


130 


20 


25 


594 


4i 


54 


67 


80 


93 


1 06 


133 


159 


25 


30 


651 


49 


64 


80 


96 


in 


127 


158 


189 


30 


35 


703 


57 


75 


93 


in 


129 


147 


183 


219 


35 


40 


752 


65 


85 


105 


126 


I4 6 


1 66 


207 


247 


40 


45 


797 


72 


95 


118 


140 


163 


185 


231 


276 


45 


50 


841 


80 


105 


130 


155 


1 80 


205 


255 


305 


50 


55 


881 


88 


116 


143 


170 


197 


225 


279 


.... 


55 


60 
65 
70 
75 

80 


920 

994 
1,029 
1,063 


96 
104 

112 
119 
127 


126 
136 
146 
156 
1 66 


155 
1 68 
1 80 
192 
205 


185 

200 
214 
229 
243 


214 
232 
248 
265 
282 


244 
263 
282 


303 




60 
65 
70 
75 

80 









.... 


85 
90 
95 
100 


1,095 
1,128 
1,158 
1,189 


135 

151 
I 5 8 


176 
1 86 
196 
206 


217 
229 
241 
253 


2 5 8 
272 
286 
3 OI 


299 


... 




.... 


85 
90 
95 
100 



























47 



THIS BOOK IS DUE ON THE LAST 
STAMPED BELOW 



AN INITIAL FINE OF 25 CENTS 

WILL BE ASSESSED FOR FAILURE TO RETURN 
THIS BOOK ON THE DATE DUE. THE PENALTY 
WILL INCREASE TO SO CENTS ON THE FOURTH 
DAY AND TO $1.OO ON THE SEVENTH DAY 
OVERDUE. 



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22748t 
7/933*3