Demolitions Exam Questions and Answers 2023
Which method of attack is preferred on a steel truss deck bridge with top
supports?
bottom attack
Using the Hasty method, how many total packages of C4 (M112) would be
required to breach a reinforced concrete wall, which is 7 feet thick, and 16 feet
wide, using elevated untamped charges?
200
What is the value of "k" when you are destroying a 5-foot thick dense concrete
wall using external charge?
0.41
Using a minimum amount of explosives, how many packages of M112 are
required to cut 11 trees with an average diameter of 34 inches?
33 trees
Using the Hasty method, how many total packages of M112 are needed for a
shallow water placed charge on a 3-foot thick Dense concrete first class masonry
wall?
19
How many packages of M112 are required to cut 11 trees, 34 inches in diameter
using a timber cutting charge? Calculate for minimum charge size.
33 pkgs
Which road crater produces the least effective barrier?
Hasty
Using a minimum amount of M112, how many packages are required to cut an I-
beam with the following dimensions: flange 8" X 1" thick and web 14" X 1" thick?
not 3 or 4
How many total pounds of TNT are required to construct a relieved-face road
crater with a road width measuring 55 feet?
740
How many Composition H6 cratering charges are needed to destroy an abutment
that is 5 feet thick, 15 feet high, and 42 feet wide?
8
Using the minimum amount of explosives, how many total packages of M112 will
be required to cut an alloy steel shaft 22" in circumference?
not 5
How many packages of military dynamite (M1) are required to create a relieved-
face crater that is 120 feet long?
not 1160
Using the minimum amount of explosives, how many total packages of C4 (M112)
will be required to cut a mild steel bar that is 14 inches in circumference?
3
How many one-pound packages of TNT are required to cut 90 trees 35 inches in
diameter using an external charge?
2790
Which method of attack is preferred on a steel truss deck bridge with top
supports?
bottom attack
Using the Hasty method, how many total packages of C4 (M112) would be
required to breach a reinforced concrete wall, which is 7 feet thick, and 16 feet
wide, using elevated untamped charges?
200
What is the value of "k" when you are destroying a 5-foot thick dense concrete
wall using external charge?
0.41
Using a minimum amount of explosives, how many packages of M112 are
required to cut 11 trees with an average diameter of 34 inches?
33 trees
Using the Hasty method, how many total packages of M112 are needed for a
shallow water placed charge on a 3-foot thick Dense concrete first class masonry
wall?
19
How many packages of M112 are required to cut 11 trees, 34 inches in diameter
using a timber cutting charge? Calculate for minimum charge size.
33 pkgs
Which road crater produces the least effective barrier?
Hasty
Using a minimum amount of M112, how many packages are required to cut an I-
beam with the following dimensions: flange 8" X 1" thick and web 14" X 1" thick?
not 3 or 4
How many total pounds of TNT are required to construct a relieved-face road
crater with a road width measuring 55 feet?
740
How many Composition H6 cratering charges are needed to destroy an abutment
that is 5 feet thick, 15 feet high, and 42 feet wide?
8
Using the minimum amount of explosives, how many total packages of M112 will
be required to cut an alloy steel shaft 22" in circumference?
not 5
How many packages of military dynamite (M1) are required to create a relieved-
face crater that is 120 feet long?
not 1160
Using the minimum amount of explosives, how many total packages of C4 (M112)
will be required to cut a mild steel bar that is 14 inches in circumference?
3
How many one-pound packages of TNT are required to cut 90 trees 35 inches in
diameter using an external charge?
2790
