©Copyright Task Force Tips LLC 2021
9
LIX-575 June 24, 2021 Rev00
5.0 SIDE LOADS AT MOUNTING POINTS WORKSHEET
An interactive version of this worksheet is available at tft.com.
WARNING
Reaction forces generated by master stream flows are capable of causing injury and property
damage if not properly supported. The Extend-A-Gun VP must be securely mounted to rigid truck
structural members.
Before installing the Extend-A-Gun VP, qualified persons MUST determine the forces that will be
exerted and select suitable structural members and bracket mounting locations.
• Nozzle reaction force which can be as high as 950 lbf (430 kg).
• The forces acting on the mounting brackets when the Extend-A-Gun VP is in the extended
position are higher than the forces in a normal deck gun installation.
Use SIDE LOADS AT MOUNTING POINTS worksheets for calculations
• Install the upper and lower brackets as far apart as possible to minimize the amount of stress on
the brackets.
Qualified individuals should install mounting brackets, Extend-A-Gun VP and monitor.
• The Extend-A-Gun VP must be securely mounted to rigid truck support members.
• Do not use flanges or pipe made from plastic for monitor mounting.
• Inferior welding or poor plate installation could result in serious injury or equipment damage.
• Torque all fasteners to specified values.
NAME: _______________________________________ DATE: ______ / _____ / __________
1) Determine the value of
H2
using the table below.
2) Determine the value of
D1
for you installation. Values of
D1
for the most common installations are listed in the table below.
Note: D1 varies between monitors as well as monitor inlet options. Verify the value of D1 is correct before using it for calculations.
Model
Extend-A-Gun VP
3” Waterway
H2
22.4”
H2
= inches [in]
D1
= inches [in]
Task Force Tips
CROSSFIRE
Task Force Tips
Hurricane
Task Force Tips
Monsoon
Task Force Tips
Tornado
D1 = 1”
D1 = 6”
D1 = 12.5”
D1
=
15.5”
I certify I have accurately and completely worked through the
Extend-A-Gun VP Side Load Worksheet
prior to Extend-A-Gun installation.
D1
: Distance from the center of the monitor elevation joint to the bottom
of the threads in the monitor inlet
H2
: Distance from bottom in the monitor inlet to the bottom of the lower
bracket for the air cylinder
D2
: Distance from bottom of the lower bracket for the air cylinder to the
center of the upper mounting bracket
F1
: Force exerted on the upper mounting bracket
D3
: Distance from the center of the upper mounting bracket to the center
of the lower mounting bracket
F2
: Force exerted on the lower mounting bracket
Height
: Desired distance from the center of the upper bracket to the center
of the stream
R
: Nozzle reaction force
XGC38
D2
D3
HEIGHT
H2
D1
F2
R
F1
CLAMP CL
Task Force Tips Task Force Tips
Typhoon
Radius
D1 = 19.0”
D1 = 22.0”
