If soils are below 7 CBR value during site planning, what structural element is planned?

If soils are below 7 CBR value during site planning, what structural element is planned?

• A. Additional support piers
• B. Ground-anchored mats
• C. Installation of a deadman
• D. Reinforced asphalt patch

Answer: (C)

Weak soil bearing capacity calls for an anchoring method to transfer loads to deeper, more stable soil. A deadman is a buried anchor connected to the structure by tie-backs, designed to resist uplift and lateral forces. When CBR is below 7, relying on shallow footings isn’t enough, so planners specify a deadman to provide the necessary resistance and prevent movement or tipping under service loads. The other ideas don’t address the load transfer to deeper soils in the same direct way: additional vertical supports help with vertical load but don’t counteract uplift effectively; ground-anchored mats can be used in soft soils but aren’t the specific anchoring solution implied here; a reinforced asphalt patch is a surface remedy, not a load-bearing foundation element.

Weak soil bearing capacity calls for an anchoring method to transfer loads to deeper, more stable soil. A deadman is a buried anchor connected to the structure by tie-backs, designed to resist uplift and lateral forces. When CBR is below 7, relying on shallow footings isn’t enough, so planners specify a deadman to provide the necessary resistance and prevent movement or tipping under service loads. The other ideas don’t address the load transfer to deeper soils in the same direct way: additional vertical supports help with vertical load but don’t counteract uplift effectively; ground-anchored mats can be used in soft soils but aren’t the specific anchoring solution implied here; a reinforced asphalt patch is a surface remedy, not a load-bearing foundation element.