Flashcards in Check On Learning Chapter 8 Deck (10):

1

## What are the three formulas for all timber charges?

### Internal: P= D squared / 250. External: P= D squared / 40. Ring: P= D squared / 40.

2

## What are three considerations when targeting timber?

### Wind, Lean, Dimension of tree.

3

## What formula do you use for a ring charge?

### External: P = D squared / 40

4

## What dimension do you want to attack on dimensional timber tatgets?

### Always attack the least dimension

5

## What should be the width and thickness of a ring charge on a tree that is 12" thick? On a tree that is 26" thick?

### At least 1/2" thick on trees up to and including 15" inch diameter. 1" inch thick on trees up to 30" inch

6

## For an abatis obstacle what is the desired minimum length?

### 75 meters

7

## Which direction should the fell trees be facing?

### 3 to 5 meters apart and 45 degrees toward the enemy.

8

## What are the types of explosives used for Internal, External, Ring?

### INTERNAL: Dynamite, plastic and sheet explosive. EXTERNAL: Circular- plastic and sheet explosive. Dimensional- TNT, palstic and sheet explosive. RING: plastic and sheet explosive

9

## What is the Abatis formula?

### P = D squared / 50

10