What is the minimum PSI of concrete steps exposed to weather?

What is the minimum PSI of concrete steps exposed to weather?

• A. 1500
• B. 2500
• C. 3000
• D. 3500

Answer: (B)

Exterior concrete elements must withstand foot traffic while resisting weather-related wear like freeze-thaw cycles and abrasion. For outdoor steps, a compressive strength of about 2,500 psi provides enough stiffness and crack resistance to handle typical pedestrian loads and weather exposure without unnecessary cost. Higher strengths (3,000 or 3,500 psi) aren’t usually needed for standard steps and are reserved for heavier loads, longer spans, or harsher environments. If conditions are unusually severe—salt exposure, extremely harsh climates, or heavier use—a higher strength might be specified, but the baseline for typical exterior steps is 2,500 psi.

Exterior concrete elements must withstand foot traffic while resisting weather-related wear like freeze-thaw cycles and abrasion. For outdoor steps, a compressive strength of about 2,500 psi provides enough stiffness and crack resistance to handle typical pedestrian loads and weather exposure without unnecessary cost. Higher strengths (3,000 or 3,500 psi) aren’t usually needed for standard steps and are reserved for heavier loads, longer spans, or harsher environments. If conditions are unusually severe—salt exposure, extremely harsh climates, or heavier use—a higher strength might be specified, but the baseline for typical exterior steps is 2,500 psi.