AZ ROC R-22 House Moving Practice Questions - Arizona ROC R-22 House Moving Examination Exam - AZ ROC R-22 House Moving Practice Questions - Arizona ROC R-22 House Moving Examination Exam

Question 1

When elevating a 120-ton two-story wood-frame building, why is a unified hydraulic jacking system with a single central manifold preferred over independently controlled hand jacks?

It allows proportional fluid distribution to maintain a level lift plane and prevent structural racking or twisting. It increases the maximum lifting speed by eliminating internal fluid friction in individual cylinders. It reduces the total force required to lift the building by multiplying hydraulic pressure at each jack. It allows operators to use jacks of different stroke lengths without requiring safety shutoff valves.

Correct Answer:

It allows proportional fluid distribution to maintain a level lift plane and prevent structural racking or twisting.

Question 2

Under standard structural moving safety practices, what is the maximum recommended height-to-width ratio for a standard temporary wooden cribbing tower without external guy wires or mechanical stabilization?

3:1 5:1 2:1 4:1

Correct Answer:

3:1

Question 3

A structural mover constructs a standard 2x2 box crib tower using sound 6x6 inch (nominal) hardwood timbers (actual dimensions 5.5 in x 5.5 in). If the allowable compression stress perpendicular to the grain for the wood species is 500 psi, what is the safe working load capacity of the cribbing tower based on the 4 bearing contact points?

60,500 lbs (approx. 30.25 tons) 121,000 lbs (approx. 60.5 tons) 30,250 lbs (approx. 15.1 tons) 90,750 lbs (approx. 45.4 tons)

Correct Answer:

60,500 lbs (approx. 30.25 tons)

Question 4

An R-22 contractor is estimating the weight of a single-story 30 ft by 50 ft wood-frame residence with plaster walls, hardwood flooring, and an asphalt-shingled gable roof. Using a standard structural moving rule of thumb of 60 lbs per square foot of floor area for plaster wood-frame construction, what is the total estimated weight of the house frame?

90,000 lbs (45 tons) 150,000 lbs (75 tons) 60,000 lbs (30 tons) 120,000 lbs (60 tons)

Correct Answer:

90,000 lbs (45 tons)

Question 5

A house moving crew is using four hydraulic rams to lift a total building load of 160,000 lbs. Each ram has an effective piston area of 7.07 square inches. Assuming the weight is equally distributed among all four rams, what hydraulic pressure (PSI) must the pump supply to hold the load?

5,658 PSI 22,631 PSI 3,536 PSI 11,315 PSI

Correct Answer:

5,658 PSI

Question 1

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Prepare with the AZ ROC R-22 House Moving Practice Questions - Arizona ROC R-22 House Moving Examination Exam practice quiz. This question bank includes 100 questions covering building, house, hydraulic, prior, and beams. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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AZ ROC R-22 House Moving Practice Questions - Arizona ROC R-22 House Moving Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on building, house, hydraulic, prior, and beams. 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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AZ ROC R-22 House Moving Practice Questions - Arizona ROC R-22 House Moving Examination Exam

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