467 PENNSYLVANIA PHILADELPHIA
DEMOLITION CLASS A 2026 COMPREHENSIVE
PRACTICE EXAM WITH ACCURATE
SOLUTIONS
◉ M9 Blasting Cap and Shock Tube Holder Rules for Shock Tube
Placement. Answer: 2 shock tubes are wrapped around,
3 - 5 are held with a overhand knot.
◉ M81. Answer: Used to initiate the time fuse and shock tube of MDI
◉ Never attach ______________, _____________, or ________________ to the
M81 igniter. Answer: detonating cord, M151, M152
◉ When taping blasting caps ensure ______________________________.
Answer: 1/8 to 1/4 inch of the cap is clearly visible at both ends
◉ Low Strength Blasting Caps cannot
_____________________________________. Answer: reliably set off standard
military explosives other than 1 strand of detonating cord
◉ M12. Answer: •Low Strength Blasting Cap
, •500 feet of Shock Tube
•Does not come with M81 from the factory. You have to order
separately
•Accommodate and ensure proper proximity for initiating up to 5
shock tubes, 5
low-strength detonating cords, or 1 strand of detonating cord from
the blasting cap or booster
◉ M13. Answer: •Low Strength Blasting Cap
•1000 feet of Shock Tube
•Does not come with M81 from the factory. You have to order
separately
•Accommodate and ensure proper proximity for initiating up to 5
shock tubes, 5
low-strength detonating cords, or 1 strand of detonating cord from
the blasting cap or booster
◉ M12 and M13 Blasting Caps should be used as a
____________________________________. Answer: Transmission line only
◉ The M14 is a _______________________, factory-crimped to about
___________________.. Answer: high-strength blasting cap
7 ½-foot length of time fuse
DEMOLITION CLASS A 2026 COMPREHENSIVE
PRACTICE EXAM WITH ACCURATE
SOLUTIONS
◉ M9 Blasting Cap and Shock Tube Holder Rules for Shock Tube
Placement. Answer: 2 shock tubes are wrapped around,
3 - 5 are held with a overhand knot.
◉ M81. Answer: Used to initiate the time fuse and shock tube of MDI
◉ Never attach ______________, _____________, or ________________ to the
M81 igniter. Answer: detonating cord, M151, M152
◉ When taping blasting caps ensure ______________________________.
Answer: 1/8 to 1/4 inch of the cap is clearly visible at both ends
◉ Low Strength Blasting Caps cannot
_____________________________________. Answer: reliably set off standard
military explosives other than 1 strand of detonating cord
◉ M12. Answer: •Low Strength Blasting Cap
, •500 feet of Shock Tube
•Does not come with M81 from the factory. You have to order
separately
•Accommodate and ensure proper proximity for initiating up to 5
shock tubes, 5
low-strength detonating cords, or 1 strand of detonating cord from
the blasting cap or booster
◉ M13. Answer: •Low Strength Blasting Cap
•1000 feet of Shock Tube
•Does not come with M81 from the factory. You have to order
separately
•Accommodate and ensure proper proximity for initiating up to 5
shock tubes, 5
low-strength detonating cords, or 1 strand of detonating cord from
the blasting cap or booster
◉ M12 and M13 Blasting Caps should be used as a
____________________________________. Answer: Transmission line only
◉ The M14 is a _______________________, factory-crimped to about
___________________.. Answer: high-strength blasting cap
7 ½-foot length of time fuse
