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UXO > Protective measures > Flashcards

Protective measures Flashcards

1
Q

What are the methods of combating earth-shock?

A

Trenching
Venting
Buttressing (Mounding)

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2
Q

What are two ways to reduce blast and frag damage?

A

Barricading

Buttressing

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3
Q

How wide should buttressing be at its base? What should it taper to?

A

10 feet at base

48” and 60” at ground level

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4
Q

What is the minimum size timber for buttressing?

A

4x4 or bigger

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5
Q

What is the thickness of a barricade for less than 105mm? 105mm and above?

A

less than 105mm: 3 feet

105mm and above: 6 feet

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6
Q

What is the k factor for light case munitions?

A

300

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7
Q

What is the k factor for heavy case munitions?

A

500

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8
Q

What is the k factor for mixed cache?

A

650

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9
Q

What is the NEW of an illum round?

A

1 lb

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10
Q

What is the NEW of a 60mm mortar?

A

1 lb

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11
Q

What is the NEW of a 81mm mortar?

A

2 lbs

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12
Q

What is the NEW of a 4.2mm?

A

9 lbs

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13
Q

What is the NEW of an AT mine?

A

22 lbs

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14
Q

What is the NEW of a claymore?

A

1.5 lbs

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15
Q

What is the NEW of a hand grenade?

A

0.5 lb

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16
Q

What is the NEW of a HEAT munition?

A

2 lbs

17
Q

What is the NEW of a S African 155?

A

18 lbs

18
Q

What is the NEW of a 107mm HE rocket?

A

11 lbs

19
Q

What is the equation for damage/casualty areas?

A

D = K x cube root of (NEWx1.38)

20
Q

What are the cache methods?

A

SF
Donor
Lattice

21
Q

How many blocks do mines get?

A

1 block

22
Q

How many blocks for standard ordnance?

A

1 block

23
Q

How many blocks for HEAT?

A

2 blocks

24
Q

How many blocks for small ordnance and fragmentation?

A

0.5 block * 40mm or less*

25
Q

How many blocks for APHE?

A

2 blocks

26
Q

How many blocks for Rocket?

A

HE rocket 2 blocks

HEAT rocket 3 blocks

27
Q

What is safe standoff distance?

A

Distance at which blast overpressure is not harmful and fragments are traveling at too low a velocity to penetrate bare skin

28
Q

What is the primary means of protecting personnel?

A

Evacuate them from the danger area

29
Q

What is the minimum safe standoff?

A

300 meters

30
Q

How big should a trench be?

A

24 inches deeper than the installation, at least 18 inches wide

31
Q

Maximum UXO size for mounding

A

20 lbs

32
Q

How much mounding is needed for a 100 lb bomb

A

60 tons

33
Q

What is the RE used for UXO

A

1.38

34
Q

How high are caches stacked?

A

No more than 2 high

35
Q

How much should you overlap C4 blocks for caches?

A

1 inch minimum

36
Q

How many blocks of C4 do mines get in the donor method?

A

2 blocks

UXO (31 decks)

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