ICC Commercial Building Inspector Practice Test

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Prepare for the ICC Commercial Building Inspector Test with our quiz. Review with flashcards and multiple-choice questions, each offering hints and explanations. Get exam-ready!

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What must be assessed to ensure a building foundation is secure on rock strata?

Existing structures
Soil moisture content
Rock competency
Local codes

The correct answer is: Rock competency

When assessing a building foundation placed on rock strata, evaluating rock competency is crucial. Rock competency refers to the strength and stability of the rock layer below the foundation. This includes determining if the rock can bear the load of the building and if it has any existing fractures, voids, or other weaknesses that could compromise the integrity of the foundation. A competent rock layer provides a solid and stable base, which is essential for the long-term durability and safety of the structure. Engineers and inspectors often conduct tests such as core drilling or in-place testing to analyze the properties of the rock, including its density, porosity, and potential for movement. Understanding the rock's load-bearing capacity is vital in ensuring the foundation will not settle unevenly or fail over time. By focusing on the rock competency, professionals ensure that the foundation will perform well under expected loads and environmental conditions, contributing to the building's overall safety and lifelong performance.