Load-Bearing Wall Capacity Calculator

Estimate the load capacity of masonry walls based on wall type, thickness, height, and reinforcement. Determine if a wall can support intended loads.

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Visualization

How It Works

Masonry wall capacity depends on compressive strength (f'm), net area, and slenderness ratio (height divided by thickness). Hollow CMU walls use only about 52% of gross area for load calculations. Grouting cells increases net area to 100%. The slenderness ratio (h/t) penalizes tall, thin walls: keep h/t below 20 for unreinforced walls. Reinforced walls can handle higher slenderness ratios. This calculator provides estimates only. Always consult a structural engineer for load-bearing wall design.