MS Underground Utilities Practice Questions - Mississippi Underground Utilities Contractor Examination Exam - MS Underground Utilities Practice Questions - Mississippi Underground Utilities Contractor Examination Exam

Question 1

Before a Mississippi underground-utilities crew opens an excavation, OSHA 29 CFR 1926.651 first requires the employer to:

Locate underground installations and contact the utility owners Stockpile all spoil against the near trench wall to form a traffic berm Begin the cut and call utilities only if a line is struck Skip locates when the trench will be less than 5 feet deep

Correct Answer:

Locate underground installations and contact the utility owners

Question 2

A crew is laying water main in an open-cut trench 6 feet deep and 300 feet long. Applying the OSHA lateral-travel rule for means of egress, what is the smallest number of ladders that will serve the run and how far apart may they stand?

Two ladders, one at each end, because only the ends of a trench need egress Six ladders, spaced no more than 50 feet apart, so no worker is more than 25 feet of lateral travel from one Three ladders, spaced 100 feet apart, because the lateral-travel rule applies only to trenches deeper than 20 feet No ladder is required, because the egress rule starts at 20 feet of depth

Correct Answer:

Six ladders, spaced no more than 50 feet apart, so no worker is more than 25 feet of lateral travel from one

Question 3

Unless retaining devices are used, excavated spoil and equipment must be kept at least how far from the edge of an excavation?

6 inches 12 inches 2 feet 5 feet

Correct Answer:

2 feet

Question 4

OSHA treats an excavation atmosphere as oxygen-deficient when the oxygen concentration falls below:

19.5 percent 16.0 percent 21.0 percent 23.5 percent

Correct Answer:

19.5 percent

Question 5

Before employees enter an excavation more than 4 feet deep where a hazardous atmosphere could reasonably be expected, OSHA requires the atmosphere to be tested. Flammable gas must not exceed:

5 percent of the lower flammable limit 10 percent of the lower flammable limit 20 percent of the lower flammable limit 50 percent of the lower flammable limit

Correct Answer:

20 percent of the lower flammable limit

Question 1

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About this Exam

Prepare with the MS Underground Utilities Practice Questions - Mississippi Underground Utilities Contractor Examination Exam practice quiz. This question bank includes 100 questions covering pipe, dipra, trench, acpa, and ductile-iron. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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MS Underground Utilities Practice Questions - Mississippi Underground Utilities Contractor Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on pipe, dipra, trench, acpa, and ductile-iron. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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MS Underground Utilities Practice Questions - Mississippi Underground Utilities Contractor Examination Exam

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