Question 1

Hydraulic fluids for general construction equipment are required to be fire resistant.

Accepted Answer

Hydraulic fluids used in general construction equipment are required to be fire resistant to minimize the risk of fire hazards in the workplace. This is important due to the high temperatures and pressure used in these machines, which can cause traditional hydraulic fluids to ignite and cause catastrophic fires. Fire-resistant hydraulic fluids are usually made of water or synthetic fluids, which have a higher flash point and lower risk of catching fire.

Question 2

Identify the three principal hazards of hydraulics over pneumatics.

Accepted Answer

1. high pressure
2. electrical conductivity
3. fire

Question 3

According to the text,when does a building floor usually bear its heaviest load?

Accepted Answer

during the building's construction

Question 4

Hydraulic fluids used in aerial lifts around energized lines are required to be of the insulating type.

Accepted Answer

Hydraulic fluids used in aerial lifts around energized lines must be of the insulating type to prevent electrical shock hazards. This is mandated by OSHA regulations.

Question 5

Rigging equipment on construction sites is required to be inspected prior to use on each shift.

Accepted Answer

Rigging equipment is required to be inspected prior to use on each shift to ensure its safety and reliability. This is important to prevent accidents and injuries on construction sites.

Question 6

Which of the following is the most important cause of construction fatalities?
A)electrocutions
B)powder-actuated tools
C)oxygen deficiency
D)explosions

Accepted Answer

Electrocutions are the leading cause of death in the construction industry, accounting for about 8.5% of all fatalities in the industry. This is largely due to the extensive use of power tools and other electrical equipment in construction work. While the other options listed (powder-actuated tools, oxygen deficiency, explosions) can also pose serious safety risks, they are not as frequently cited in construction fatality statistics.

Question 7

What is the general construction area minimum lighting standard?

Accepted Answer

The answer of What is the general construction area minimum...

Question 8

Identify the principal hazard of pneumatics over hydraulics.

Accepted Answer

The answer of Identify the principal hazard of pneumatics over...

Question 9

Powder-actuated tool cartridges are available only in a single power rating.

Accepted Answer

Powder-actuated tool cartridges come in various power levels to accommodate different materials and thicknesses, allowing for appropriate force application without causing damage.

Question 10

Which of the following is not a hazard of hydraulics over pneumatics?
A)high pressure
B)electrical conductivity
C)fire
D)noise

Accepted Answer

Noise is not a hazard of hydraulics or pneumatics. High pressure, electrical conductivity, and fire can all be hazards of hydraulics over pneumatics.

Question 11

The general construction area minimum lighting standard is
A)5 foot-candles
B)10 foot-candles
C)15 foot-candles
D)none;there is no general lighting standard for construction sites

Accepted Answer

The general construction area minimum lighting standard is 5 foot-candles, ensuring that work areas are sufficiently illuminated for safety and efficiency.

Question 12

Which of the following is a hazard of pneumatics over hydraulics?
A)high pressure
B)electrical conductivity
C)fire
D)noise

Accepted Answer

Pneumatics create a lot of noise due to the air compressors and can be a hazard to workers' hearing if not controlled properly. However, hydraulics do not create much noise as they use incompressible fluids. The other options listed are hazards of hydraulics but not pneumatics. Therefore, the best choice is D.

Question 13

During structural steel assembly,the use of 1/2 inch wire rope approximately 42 inches high is permitted in lieu of standard guardrails.

Accepted Answer

According to OSHA regulations, during structural steel assembly, 1/2 inch wire rope approximately 42 inches high can be used in lieu of standard guardrails.

Question 14

The principal hazard of mushroomed heads on hand-held impact tools is
A)the tool may break in two
B)a sliver may break off and injure the worker's eye
C)the mallet may glance off and strike the worker's hand
D)the tool may fly from the worker's hand

Accepted Answer

Mushroomed heads on hand-held impact tools may break off and cause slivers to fly, which can injure the worker's eye. This hazard can be prevented by regularly grinding down the mushroomed heads or replacing them altogether.

Question 15

Hydraulic fluids for general construction equipment are required to be of the insulating type.

Accepted Answer

Hydraulic fluids for general construction equipment are not required to be of the insulating type. However, they should have good anti-wear properties and provide good oxidation and thermal stability.

Question 16

What frequency is required for inspection of rigging on construction sites:
A)annually
B)monthly
C)weekly
D)each shift

Accepted Answer

Rigging equipment for material handling should be inspected before each shift to ensure safety, as conditions and integrity can change between uses.

Question 17

The general construction area minimum lighting standard is
A)3 foot-candles
B)5 foot-candles
C)10 foot-candles
D)20 foot-candles

Accepted Answer

The general construction area minimum lighting standard is 5 foot-candles, as specified by OSHA (Occupational Safety and Health Administration) for construction sites to ensure safety and visibility.

Question 18

The heaviest load a floor will probably ever support is the stacked materials used during its own construction.

Accepted Answer

During construction, floors are loaded with materials such as steel, concrete, and lumber which are much heavier than any furniture or equipment that would be placed on the floor during occupancy. Therefore, the heaviest load a floor will probably ever support is the stacked materials used during its own construction.

Question 19

Hydraulic fluids used in aerial lifts around energized lines are required to be fire resistant.

Accepted Answer

The answer of Hydraulic fluids used in aerial lifts around...

Question 20

What frequency is required for inspection of rigging on construction sites:
A)each shift
B)weekly
C)monthly
D)none specified

Accepted Answer

Rigging equipment for material handling should be inspected before each shift to ensure safety.

Quiz 18: Construction