1. WILDLAND FIRE HYDRAULICS CALCULATIONS - "BONEHEAD" vs. ACCURATE!
Is there truly a "CHOICE" which method to more EASILY vs. ACCURATELY calculate Fire Ground
Hydraulics when mathematics "NEVER" LIE!?! Well somebody is! Is it YOU!?! Hmmmm!?!
How do you explain
32.04%
UNDER "CALCULATED" Engine Pressure at 1,100 feet at
53
GPM from an 1.5" "Attack" nozzle with
13
GPM "Laterals" every 200 feet and HEAD of
87
I was THREATENED to "DO NOT CONFUSE THE CLASS!!!" in May 1986 or face certain TERMINATION!!!
Oh, I'm STUPID!!! Do you even get I graduated "TOP STUDENT" at Rank ONE (1) of 23 at 96.8%!?!
Are you even aware of this truly INSIGNIFICANT formula that is instructed INTERNATIONALLY!?!
FL = C * (Q / 100)^2 * (L / 100)
Engine Pressure = Nozzle Pressure + Friction Loss + Appliance(s) + HEAD
Coefficient (C) for 1.5" hose is 24
Go to: http://frictionlosscalculator.com/
Coefficient (C) for 1" hose is 150
Also be "enlightened" at: http://www.hoseroller.info
GPM (Q)
Please NOTE:
You're wannabe "academy" demands accuracy within 10 PSI right!?! How can you justify FAILING past
Length (L)
students now UNEMPLOYED when it's evidenced you INSTRUCT results that are GROSSLY INCORRECT by far MORE!?!
Please feel FREE to fill-in ONLY the - LIGHT BLUE - highlighted cells to satisfy your feeble curiousity!
But don't forget the maximum ENGINE PRESSURE CANNOT EXCEED 400 PSI! REMEMBER!?!
Or do you recall the "TEST PRESSURE" of fire hose as fire apparatus are CONFUSINGLY governed!?! Hmmm!?!
Oh, I'm Stupid! You've been INSTRUCTING YOUR "PERSONAL AGENDA" sh*t for DECADES!!! Should I QUIT!?!
DAMN!!! Have I crossed a "SACRED POLITICAL LINE!?!" Am I facing HARASSMENT CHARGES!?!
- But by all means, PLEASE try to have FUN!!! -
Hoffmann Fire & Rescue Technologies - West Des Moines, Iowa 50265 - (877) HOSEROLLER [(877) 467-3765] - rich@hftfire.com
www.hftfire.com - © 2014 [Don't even fn' think about it *ss wipe! LOL!]

2. "CORRECT" METHOD - INTERNATIONALLY RECOGNIZED "FIRE STANDARD"
HEAD: Enter feet elevation
200
1.5"
1.5" Prog.
ACCURATE
1"
Number of
1.0" Lateral
ACTUAL
87
Hoseline
Friction Loss
1.5" Hoselay
1.5" Sub-total
Lateral
1.0" Laterals
Friction Loss
1.0" Sub-total
REQUIRED
NP - (T/C)
GPM
per 100'
Length
"Friction Loss"
GPM
at 100' each
per 100'
Friction Loss
APPLIANCE
EP
50
53
6.7
100
6.7
0
0
0.0
0
143.4
50
53
6.7
200
13.5
0
0
0.0
5
155.1
50
66
10.5
300
23.9
13
1
2.5
2.5
5
168.1
50
66
10.5
400
34.4
13
1
2.5
2.5
10
183.6
50
79
15.0
500
49.4
13
2
2.5
5.1
10
201.1
50
79
15.0
600
64.3
13
2
2.5
5.1
15
221.1
50
92
20.3
700
84.7
13
3
2.5
7.6
15
243.9
50
92
20.3
800
105.0
13
3
2.5
7.6
20
269.2
50
105
26.5
900
131.4
13
4
2.5
10.1
20
298.2
50
105
26.5
1000
157.9
13
4
2.5
10.1
25
329.7
50
118
33.4
1100
191.3
13
5
2.5
12.7
25
365.7
50
118
33.4
STOP!
224.7
13
5
2.5
12.7
30
404.1
50
131
41.2
STOP!
265.9
13
6
2.5
15.2
30
447.8
50
131
41.2
STOP!
307.1
13
6
2.5
15.2
35
494.0
50
144
49.8
STOP!
356.9
13
7
2.5
17.7
35
546.3
50
144
49.8
STOP!
406.6
13
7
2.5
17.7
40
601.0
THESE ARE THE ACCURATE CALCULATIONS PER INTERNATIONAL "LAW" YET…
CAL FIRE's "UNDISPUTED OR BE FIRED" calculation at 1100 ft. is
151.5
PSI of
"EXTRA" PRESSURE TO EXTEND YOUR HOSE LAY UP TO
2144
feet MORE!
This is AFTER the ACTUAL DEMANDS "STOP!!!" Hell! Go for it! If those "Pee-On" firefighters complain, just
shove it right back up their *SS 'cuz YOU KNOW the "CAL FIRE GOD'S" trained you RIGHT!
Hoffmann Fire & Rescue Technologies - West Des Moines, Iowa 50265 - (877) HOSEROLLER [(877) 467-3765] - www.hftfire.com - © 2014

3. "POLITICALLY CORRECT" CAL FIRE ACADEMY METHOD IN WHICH THE "TRUNK LINE" NEVER ADJUSTS
FOR "INCREASED" GPM FOR EACH ONE (1") INCH LATERAL ADDED WHICH EXPONENTIALLY INCREASES "FL!"
HEAD: Enter feet elevation
"Politically"
200
1.5"
1.5" FLAT
Correct
Number of
1.0" Lateral
INcorrect
87
Hoseline
Friction Loss
1.5" Hoselay
1.5" Sub-total
1.0" Laterals
Friction Loss
1.0" Sub-total
"REQUIRED"
TIP NP
GPM
per 100'
Length
"Friction Loss"
1.0" GPM
at 100' each
per 100'
Friction Loss
APPLIANCE
EP
50
53
6.7
100
6.7
0
0
0.0
0
143.4
50
53
6.7
200
13.5
0
0
0.0
5
155.1
50
53
6.7
300
20.2
13
1
2.5
2.5
5
164.4
50
53
6.7
400
27.0
13
1
2.5
2.5
10
176.2
50
53
6.7
500
33.7
13
2
2.5
5.1
10
185.4
50
53
6.7
600
40.4
13
2
2.5
5.1
15
197.2
50
53
6.7
700
47.2
13
3
2.5
7.6
15
206.5
50
53
6.7
800
53.9
13
3
2.5
7.6
20
218.2
50
53
6.7
900
60.7
13
4
2.5
10.1
20
227.5
50
53
6.7
1000
67.4
13
4
2.5
10.1
25
239.2
50
53
6.7
1100
74.2
13
5
2.5
12.7
25
248.5
50
53
6.7
1200
80.9
13
5
2.5
12.7
30
260.2
50
53
6.7
1300
87.6
13
6
2.5
15.2
30
269.5
50
53
6.7
1400
94.4
13
6
2.5
15.2
35
281.3
50
53
6.7
1500
101.1
13
7
2.5
17.7
35
290.5
50
53
6.7
1600
107.9
13
7
2.5
17.7
40
302.3
This should look really familiar to your "NORMAL" or "STATUS QUO" that has kept YOU and literally every
SEVERELY DECEIVED STUDENT feeling "SAFE AND SECURE" as "Ya' all got 'em through the MATH somehow!"
…but have you considered REALITY!?! Ask the USFS and BLM what they do! Any DIFFERENCE?
But what do you care 'cuz the only numbers you care about are "THE RESULTS" to an "EASIER" math equation!
Hoffmann Fire & Rescue Technologies - West Des Moines, Iowa 50265 - (877) HOSEROLLER [(877) 467-3765] - rich@hftfire.com
www.hftfire.com - © 2014 [Don't even fn' think about it *ss wipe! LOL!]

4. Number
ACTUAL
ACTUAL
ACTUAL Hose
CAN
"Politically
NET
NET
ASS-U-ME d
Hose TO
1.5" Hose
of 1"
REQUIRED
REMAINING
to ADD w/o
WE
Correct"
Incorrect
RESULT
REMAINING
ADD Beyond
Length
Laterals
EP
PSI TO 400
NEW Laterals
PUMP?
EP
EP
ERROR!
PSI TO 400
ACTUAL
100
143.4
256.6
3806
YES
143.4
0.0
0.00%
256.6
0
200
155.1
244.9
3632
YES
155.1
0.0
0.00%
244.9
0
300
1
168.1
231.9
2218
YES
164.4
3.7
2.21%
235.6
1277
400
1
183.6
216.4
2070
YES
176.2
7.4
4.04%
223.8
1250
500
2
201.1
198.9
1328
YES
185.4
15.7
7.79%
214.6
1855
600
2
221.1
178.9
1194
YES
197.2
23.9
10.81%
202.8
1814
700
3
243.9
156.1
768
YES
206.5
37.5
15.36%
193.5
2103
800
3
269.2
130.8
644
YES
218.2
51.0
18.96%
181.8
2053
900
4
298.2
101.8
385
YES
227.5
70.8
23.73%
172.5
2174
1000
4
329.7
70.3
266
YES
239.2
90.5
27.44%
160.8
2119
1100
5
365.7
34.3
103
YES
248.5
117.2
32.04%
151.5
2144
1200
5
404.1
0.0
0
STOP!
260.2
143.8
35.60%
139.8
2073
1300
6
447.8
0.0
0
STOP!
269.5
178.3
39.81%
130.5
1935
1400
6
494.0
0.0
0
STOP!
281.3
212.7
43.06%
118.7
1761
1500
7
546.3
0.0
0
STOP!
290.5
255.7
46.82%
109.5
1624
1600
7
601.0
0.0
0
STOP!
302.3
298.8
49.71%
97.7
1450
And you question why Firefighters SCREAM, "MORE PRESSURE!!! MORE PRESSURE!!! MORE PRESSURE!!!"???
How many have been INJURED!?! …AND RISK DEATH UPON "PURPOSEFUL" DISREGARD TO PHYSICS!?!
…or are "YOU" who "Firefighter SAFETY" is a very distant "NON-PRIORITY" to securing them GRADUATING NUMBERS!?!
Hoffmann Fire & Rescue Technologies - West Des Moines, Iowa 50265 - (877) HOSEROLLER [(877) 467-3765] - rich@hftfire.com
CAL FIRE INTEGRITY? WHO NEEDS THAT SH*T!?!
www.hftfire.com - © 2014
CAL FIRE Firefighter SAFETY!?! UNIMPORTANT!!!