Demolitions Exam Questions And Answers Verified
100% Correct
From what distance from the building is Blue Stake marking enforceable: - ANSWER-
36 inches
If working on a roof from what distance from the edge of a roof should a warning line be
placed: - ANSWER- 6 feet
What would be used at the jobsite to reduce the creation of dust during earth moving: -
ANSWER- watering
Who approves the manufacturing specifications of safety goggles: - ANSWER- Ansi
Who is responsible for workplace safety: - ANSWER- the contractor
What is the minimum width for a catch platform: - ANSWER- 6 feet
What is the lighting requirement for a covered pedestrian walkway at a jobsite: -
ANSWER- at all times
Which of the following must be on a jobsite sign: - ANSWER- owner's phone number
What is the minimum width for a roadway near combustible demolition material: -
ANSWER- 15 feet
The Blue Stake color ORANGE represents what: - ANSWER- optical fiber, fiber
communication cable
Which of the following tools requires top and bottom guards - ANSWER- circular saw
At what maximum height on the building is the first catch platform required: - ANSWER-
35 feet
Shields used to protect workers from welding flashes should not be manufactured from:
- ANSWER- synthetics
What class of hard hat would be used to protect against falling debris and a 20,000V
electrical service: - ANSWER- B
Historically when do most accidents with a crane occur: - ANSWER- assembly
Within what period must Blue Stake be notified before digging begins: - ANSWER- 48
, hours
What is the minimum separation between the boom of a crane and a 50KV electical line:
- ANSWER- 10 feet
What are the advantages and disadvantages of using demolition? - ANSWER-
Advantage:
Speed, elimination of equipment, rapid and effective for cutting, burying, trenching, and
tunneling Disadvantage:
Requires highly trained and experienced personnel. Strict safety precautions, restricted
by other nearby operations
What is HERO - ANSWER- Hazards of Electromagnetic Radiation to Ordnance
Dont conduct demolition operations during what types of storms? - ANSWER- electrical,
sand, dust, snow, which produce static electrical charges or when a storm is within 10
miles
What can extensive cloud coverage do to demolition operations? - ANSWER- intensify
shock effects
>1000ft no go
Define DODAC and NALC - ANSWER- DODAD- department of defense identification
code
NALC- Navy ammunition Logistics Code and (NSN) National stock number
How long must you wait after a demolition blast for poisonous gas to leave? -
ANSWER- 5 minutes
What is an explosive? - ANSWER- chemical or compound the under initiating conditions
undergoes rapid chemical and physical changes generating large volumes of gas,
intense heat, and high pressure
What are high explosives? - ANSWER- velocity greater than sound throughout the
material exploding
What are low explosives? - ANSWER- velocity less than sound throughout the material
exploding
What is a high and low order detonations? - ANSWER- High:
all explosives are consumed
Low:
not all of the explosives are consumed
100% Correct
From what distance from the building is Blue Stake marking enforceable: - ANSWER-
36 inches
If working on a roof from what distance from the edge of a roof should a warning line be
placed: - ANSWER- 6 feet
What would be used at the jobsite to reduce the creation of dust during earth moving: -
ANSWER- watering
Who approves the manufacturing specifications of safety goggles: - ANSWER- Ansi
Who is responsible for workplace safety: - ANSWER- the contractor
What is the minimum width for a catch platform: - ANSWER- 6 feet
What is the lighting requirement for a covered pedestrian walkway at a jobsite: -
ANSWER- at all times
Which of the following must be on a jobsite sign: - ANSWER- owner's phone number
What is the minimum width for a roadway near combustible demolition material: -
ANSWER- 15 feet
The Blue Stake color ORANGE represents what: - ANSWER- optical fiber, fiber
communication cable
Which of the following tools requires top and bottom guards - ANSWER- circular saw
At what maximum height on the building is the first catch platform required: - ANSWER-
35 feet
Shields used to protect workers from welding flashes should not be manufactured from:
- ANSWER- synthetics
What class of hard hat would be used to protect against falling debris and a 20,000V
electrical service: - ANSWER- B
Historically when do most accidents with a crane occur: - ANSWER- assembly
Within what period must Blue Stake be notified before digging begins: - ANSWER- 48
, hours
What is the minimum separation between the boom of a crane and a 50KV electical line:
- ANSWER- 10 feet
What are the advantages and disadvantages of using demolition? - ANSWER-
Advantage:
Speed, elimination of equipment, rapid and effective for cutting, burying, trenching, and
tunneling Disadvantage:
Requires highly trained and experienced personnel. Strict safety precautions, restricted
by other nearby operations
What is HERO - ANSWER- Hazards of Electromagnetic Radiation to Ordnance
Dont conduct demolition operations during what types of storms? - ANSWER- electrical,
sand, dust, snow, which produce static electrical charges or when a storm is within 10
miles
What can extensive cloud coverage do to demolition operations? - ANSWER- intensify
shock effects
>1000ft no go
Define DODAC and NALC - ANSWER- DODAD- department of defense identification
code
NALC- Navy ammunition Logistics Code and (NSN) National stock number
How long must you wait after a demolition blast for poisonous gas to leave? -
ANSWER- 5 minutes
What is an explosive? - ANSWER- chemical or compound the under initiating conditions
undergoes rapid chemical and physical changes generating large volumes of gas,
intense heat, and high pressure
What are high explosives? - ANSWER- velocity greater than sound throughout the
material exploding
What are low explosives? - ANSWER- velocity less than sound throughout the material
exploding
What is a high and low order detonations? - ANSWER- High:
all explosives are consumed
Low:
not all of the explosives are consumed
