1. What is Bolt Load Capacity?

Definition: This calculator determines the maximum tensile load a bolt can withstand before failure.

Purpose: Helps engineers and construction professionals properly size bolts for structural applications.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P \) — Load capacity (pounds)
• \( S \) — Tensile strength of bolt material (psi)
• \( A \) — Cross-sectional area of bolt (square inches)

Explanation: The tensile strength of the bolt material is multiplied by its cross-sectional area to determine its load-bearing capacity.

3. Importance of Bolt Load Calculation

Details: Proper bolt sizing ensures structural integrity, prevents catastrophic failures, and meets safety standards.

4. Using the Calculator

Tips: Enter the bolt material's tensile strength in psi and the bolt's cross-sectional area in square inches. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where do I find tensile strength values?
A: Material specifications or engineering handbooks provide tensile strength values for common bolt materials.

Q2: How do I calculate cross-sectional area?
A: For standard bolts: \( A = \pi \times (D/2)^2 \) where D is the nominal diameter.

Q3: Does this account for safety factors?
A: No, this calculates ultimate capacity. Apply appropriate safety factors per your design requirements.

Q4: What about shear capacity?
A: This calculates tensile capacity only. Shear capacity is typically 60% of tensile capacity.

Q5: How does thread reduction affect capacity?
A: Use the root diameter (minor diameter) for threaded sections when calculating area.