How to test stone slabs for structural weaknesses before outdoor seating installation?

Before installing stone slabs for outdoor seating, it's crucial to test them for structural weaknesses to ensure safety and longevity. Here are key methods:

1. Visual Inspection: Examine slabs for cracks, fissures, or discoloration, which may indicate internal flaws.

2. Sound Testing: Tap the slab with a hammer—a hollow sound suggests voids or delamination.

3. Load Testing: Apply gradual weight to check for deflection or cracking under pressure.

4. Moisture Absorption Test: High absorption rates may signal porosity and weakness.

5. Non-Destructive Testing (NDT): Use ultrasonic or infrared tools to detect hidden defects.

Always consult a professional for critical assessments to avoid future failures. Proper testing ensures durable and safe outdoor seating installations.