If trench depth is deeper than 20 ft, what must be done?

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Multiple Choice

If trench depth is deeper than 20 ft, what must be done?

Deep trenches bring a high risk of collapse and groundwater issues, so they require a formal protective plan designed by a qualified professional. When trench depth exceeds 20 feet, a generic approach isn’t enough—the protective system must be engineered to account for soil type, groundwater, loads from the surface, and worksite conditions. This engineering ensures the trench walls stay stable, provides safe access and egress, and specifies the appropriate shoring, shielding, or other protective measures. That’s why, in this scenario, the trench must be engineered.

Deep trenches bring a high risk of collapse and groundwater issues, so they require a formal protective plan designed by a qualified professional. When trench depth exceeds 20 feet, a generic approach isn’t enough—the protective system must be engineered to account for soil type, groundwater, loads from the surface, and worksite conditions. This engineering ensures the trench walls stay stable, provides safe access and egress, and specifies the appropriate shoring, shielding, or other protective measures. That’s why, in this scenario, the trench must be engineered.

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