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Allowable Bearing Stress is the maximum limit of stress allowed or permitted for bearing on concrete or masonry. It represents the safe stress level that a material can withstand without permanent deformation or failure.
The calculator uses the formula:
Where:
Explanation: The formula calculates the allowable bearing stress as 66% of the material's yield stress, providing a safety margin against permanent deformation.
Details: Accurate calculation of allowable bearing stress is crucial for structural design, ensuring that connections and supports can safely carry applied loads without exceeding material limits.
Tips: Enter the yield stress of steel in Pascal. The value must be positive and greater than zero for accurate calculation.
Q1: Why use 0.66 as the factor for yield stress?
A: The 0.66 factor provides an appropriate safety margin, typically representing about 2/3 of the yield stress to prevent permanent deformation.
Q2: What are typical yield stress values for structural steel?
A: Common structural steels have yield stresses ranging from 250-500 MPa, though specific values depend on the steel grade and composition.
Q3: When should allowable bearing stress be calculated?
A: This calculation is essential when designing connections, supports, and bearing plates where concentrated loads are transferred between structural elements.
Q4: Are there limitations to this formula?
A: This formula provides a general guideline but may need adjustment based on specific design codes, material properties, and loading conditions.
Q5: How does this relate to building codes and standards?
A: Most building codes reference similar formulas for allowable stress calculations, though specific factors may vary slightly between different code provisions.