Rc3 And Rc4 Side Loads At Mounting Points Worksheet - Task Force Tips Extend-A-Gun RC3 Instruction For Safe Installation, Operation, And Maintenance

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RC3 AND RC4 SIDE LOADS AT MOUNTING POINTS WORKSHEET

An interactive version of this worksheet is available at tft.com.
WARNING
NAME: _______________________________________
1) Determine the value of H2 using the table below.
H2 =
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.
D1 =
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Reaction forces generated by master stream flows are capable of causing injury and property
damage if not properly supported. The Extend-A-Gun must be securely mounted to rigid truck
structural members.
Before installing the Extend-A-Gun, 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 900 lbf (400 kg) for 3" models and 1500 lbf (680
kg) for 4" models.
• The forces acting on the mounting brackets when the Extend-A-Gun 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-Guns and monitors.
• The Extend-A-Gun 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.
inches [in]
inches [in]
Extend-A-Gun RC3 & RC4 Side Load Worksheet prior to Extend-A-
DATE: ______ / _____ / __________
D1:
of the threads in the monitor inlet
H2:
the reducer housing
D2:
F1:
D3:
F2:
Height: Desired distance from the center of the upper bracket to the center
of the stream
R:
RC3 XGA32
Model
3" Waterway
12" Extension
H2 15.7"
Task Force Tips Task Force Tips
CROSSFIRE Hurricane
D1 = 2" D1 = 6"
11
RC4 XGA42 RC3 XGA38 RC4 XGA48
4" Waterway 3" Waterway 4" Waterway
12" Extension 18" Extension 18" Extension
15.7" 22.6"
Task Force Task Force
Tips Monsoon Tips Tornado
D1 = 13" D1 = 13"
LIX-530 March 17, 2020 Rev15
22.6"
Task Force
Tips Typhoon
D1 = 19"