1. SDZ Construction: Anti-Tank Rockets (AT-4)
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)
Inter-service Resident Range Safety Course (Intermediate)
SDZ Construction: Anti-Tank Rockets (AT-4)

2. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
The AT-4
The AT-4 is a lightweight anti-tank weapon used primarily by infantry forces for engagement and defeat of light armor.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

3. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
84mm HEAT cartridge
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

4. Legend for the AT-4 Weapon: Ammo Type: Distance X: Area A: Area B:
Map Scale:
Map Sheet:
Map Series:
Map Edition:
Date:
Name:
August 2003

5. Constructing an SDZ for the AT-4
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Constructing an SDZ for the AT-4
Construct an SDZ for the AT-4 firing the 84mm HEAT M136 rocket.
Map Scale: 1:25,000.
Dimensions of the SDZ for this weapon system are given in DA-PAM , Chapter 8, Table 8-4 and Figures 8-4 and 8-5.
First, plot the firing point, target, and rocket target line.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

6. Draw the Rocket Target Line.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Plot the target.
Draw the Rocket Target Line.
Plot the firing point.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

7. From Table 8-4, find the measurement for Distance X.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
From Table 8-4, find the measurement for Distance X.
Distance X =
2100m
Distance X
Annotate Distance X on the legend.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

8. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
For the Dispersion Area, at the firing point, measure with a protractor 5° angles on the right and left of the Rocket Target Line.
Distance X
Draw tic marks as shown. 5°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

9. This completes the Dispersion Area.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
From the firing point, draw a line through the tic marks out through Distance X.
Distance X
Dispersion
Area
This completes the Dispersion Area. 5°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

10. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
At the firing point, measure 13° with a protractor from the left and right limits of the Dispersion Area to establish the Ricochet Area.
Distance X
Dispersion
Area
Draw tic marks.
13°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

11. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Draw a straight line from the firing point through each tic mark out through Distance X.
Distance X
Dispersion
Area
From the firing point, scribe an arc between the left and right limits of the Ricochet Area. Use Distance X as the radius.
13°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

12. This completes the Ricochet Area.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
This completes the Ricochet Area.
Distance X
Erase any unnecessary lines.
Dispersion
Area
Ricochet
Area
13°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

13. This completes the Ricochet Area.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
This completes the Ricochet Area.
Distance X
Erase any unnecessary lines.
Dispersion
Area
Ricochet
Area
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

14. From Table 8-4, find the measurement for Area A.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
From Table 8-4, find the measurement for Area A.
Distance X
Area A =
227m (ˆ240m)
Dispersion
Area
Lightly draw lines perpendicular to the limits of the Ricochet Area.
Ricochet
Area
At the measurement for Area A, place tic marks on the lines just drawn.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

15. Draw straight lines through the tic marks just drawn.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Draw straight lines through the tic marks just drawn.
Distance X
At the firing point, measure with a protractor 25° for Area A.
Dispersion
Area
Ricochet
Area
Draw tic marks as shown.
25°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

16. Draw straight lines through the tic marks just drawn.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Draw straight lines through the tic marks just drawn.
Distance X
From Table 8-4, find the measure-ment for Area B.
Dispersion
Area
Area B =
488m (ˆ500m)
Ricochet
Area
25°
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

17. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Lightly draw a line that extends the rocket target line from Distance X.
Distance X
25°
Dispersion
Area
Dispersion
Area
Verify that Distance X is correct and then place a tic mark at the measurement for Area B.
Ricochet
Area
Ricochet
Area
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

18. This completes Areas A and B.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
25°
From the firing point, scribe an arc using the measurement for Area B as the radius.
Distance X
Dispersion
Area
Dispersion
Area
This completes Areas A and B.
Ricochet
Area
Ricochet
Area
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

19. Annotate Areas A and B on the legend.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Area A
Area B
Annotate Areas A and B on the legend.
Distance X
To complete this part of the SDZ, erase all unnecessary lines.
Dispersion
Area
Dispersion
Area
Ricochet
Area
Ricochet
Area
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

20. Annotate Areas A and B on the legend.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Area A
Area B
Annotate Areas A and B on the legend.
Distance X
To complete this part of the SDZ, erase all unnecessary lines.
Dispersion
Area
Dispersion
Area
Ricochet
Area
Ricochet
Area
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

21. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Area F
Area F is the danger Area to the rear of a weapon system where personnel are endangered by back-blast debris, overpressure, blast, and hazardous impulse noise.
Area F is the 90° angle (45° left and right) of the rearward extension of the rocket target line.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

22. Area F There are two zones associated with Area F: The Danger Zone
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Area F
There are two zones associated with Area F:
The Danger Zone
The Caution Zone
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

23. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Danger Zone
The Danger Zone is the immediate area to the rear of the firing line.
Danger Zone occupation could result in fatalities or serious casualties including severe burns, eye damage, or permanent hearing loss.
The hazards are base plate fragments, debris, fireball, high noise levels, and overpressure.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

24. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Caution Zone
The Caution Zone is an extension of the Primary Danger Zone.
Occupation of this zone could also result in severe casualties due to back blast, debris, high noise levels and possible base plate fragments.
The Primary Danger and Caution Zones may not be modified.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

25. Draw the components of Area F in detail.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Area A
Area B
Locate Area F
Distance X
Draw the components of Area F in detail.
Dispersion
Area
Dispersion
Area
Ricochet
Area
Ricochet
Area
Area F
(not to scale)
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

26. In Table 8-4, find the Area F depth measurement. Danger Zone depth =
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Firing Line
Note: Scale for Area F is 1:625
In Table 8-4, find the Area F depth measurement.
Danger Zone depth =
5 meters
Caution Zone depth =
95 meters
Area F depth =
100 meters
Scale conversion: [x = (a x 1000 ÷ b)]
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

27. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
95m 5m
Firing Line
45°
45°
Draw a line the length of the Area F depth rearward from the firing point along the same line as the rocket target line.
From the firing point, draw two additional lines of the same length; one 45° to the left and one 45° to the right of the line just drawn.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

28. Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
95m 5m
Firing Line
45°
From the firing point, scribe an arc from the left to the right limit of the Danger Zone. Use the 100 meter measurement as the radius.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

29. This completes the Danger Zone.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
95m 5m
Firing Line
Danger Zone
45°
45°
From the firing point, scribe an arc from the left to the right limit of the Danger Zone. Use the 5 meter measurement as the radius.
This completes the Danger Zone.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

30. The Area below the Danger Zone is the Caution Zone.
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
95m 5m
Firing Line
Danger Zone
Caution Zone
45°
45°
The Area below the Danger Zone is the Caution Zone.
This completes Area F.
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)

31. Legend for the AT-4 Weapon: AT-4 Ammo Type: 84mm HEAT M136 Rocket
Inter-service Resident Range Safety Course (Intermediate)
Version: August 2003
Legend for the AT-4
Weapon:
AT-4
Ammo Type:
84mm HEAT M136 Rocket
Distance X:
2100m
Area A:
227m (ˆ240m)
Area B:
488m (ˆ500m)
Primary Danger Zone: 5m
Primary Caution Zone:
95m
Area F:
100m
Map Scale:
1:25,000
Map Sheet:
Map Series:
Map Edition:
Date:
Name:
August 2003
SDZ Construction: Anti-Tank Rockets (AT-4)