Free Construction Health and Safety Technician Questions and Answers

Question 1

What danger is present when painters and electricians are finishing in the same room during the last stages of a project?

Accepted Answer

Fire

Answer

The risks posed by numerous activities taking place in one site must be taken into account whenever multiple trades or contractors are working there. As an illustration, while painters are painting trim using oil-based paint (a flammable hazard), electricians may be checking the lights (an ignite source). The combustible fumes from this job could catch fire if sparks from the work are produced. The risks associated with each task can increase if you work close to other contractors.

Question 2

What angle cannot the trench wall surpass if a five-foot-deep clay trench is dug?

Accepted Answer

53 degrees

Answer

After determining the soil type using 29 CFR 1926 Subpart P, Appendix A, the maximum slope angle can then be found by cross-referencing 29 CFR 1926 Subpart P, Appendix B. Clay is a "cohesive" Type-A material and requires a maximum slope angle of 53 degrees, with an associated height-to-depth ratio of 34 to 1. Therefore, a 3.75-foot angle, or 53 degrees, is the maximum needed for a five-foot trench. Any angle greater than this can cause the structure to collapse.

Question 3

Which of the following is used to determine lifting index (LI)?

Accepted Answer

Load weight x recommended weight limit

Answer

A manual lift's proportionate physical strain and injury risk are measured by the lifting index (LI). The recommended weight limit (RWL) is multiplied by the load weight to determine the LI. For a typical, healthy employee, a LI score of less than 1.0 suggests little risk, while a result of higher than 1.0 denotes a danger of injury during the lift.

Question 4

Which action should be taken FIRST to lessen a painter's exposure to volatile organic compounds (VOCs) contained in oil-based paint, according to the hierarchy of controls?

Accepted Answer

Replace the paint with a water-based formulation.

Answer

The hierarchy of controls is set up so that the best hazard mitigation strategy is chosen before less protective ones. Elimination is the first factor to be taken into account when using this theory; if there is no danger, there is no hazard. VOC exposure can be avoided by switching to a water-based paint instead of an oil-based one.

Question 5

In order to achieve a safe lift, which of the following does a mobile crane operator NOT need to be aware of?

Accepted Answer

The width of the jib

Answer

A crane operator must be informed of the crane's capabilities and limitations in order to ensure a safe lift. Outriggers should always be used, and they should be placed on solid, level ground. How much of the crane's maximum rated load it can lift without tipping over will depend on the boom's angle. Finally, to lessen the chance of tipping, the tires must be fully filled.

CHST - Construction Health and Safety Technician Practice Test

CHST - Construction Health and Safety Technician Practice Test

Free Construction Health and Safety Technician Questions and Answers