Earthwork Level 2 Practice Exam

The standard penetration resistance for crushed limerock in Florida has been standardized to what psi?

900 psi 600 psi 1000 psi 800 psi

Correct Answer:

800 psi

Explanation:

Understanding how materials are rated for strength helps explain this. Standard penetration resistance is a way to express how much a material resists being penetrated, which in practice translates to its bearing strength and suitability as a base for pavement. For crushed limerock used in Florida road bases, the state has established a specific benchmark value: 800 psi. This standardized target provides a consistent, reliable level of strength for design and quality control, balancing adequate support for pavements with practical construction needs. The other values don’t reflect the fixed Florida standard for this material, so 800 psi is the appropriate choice.

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