Safe Load Formula:
Definition: The safe load which a rivet can withstand against crushing is the maximum force it can bear without failing under compressive stress.
Purpose: This calculation helps engineers determine the appropriate rivet size and spacing for structural connections.
The calculator uses the formula:
Where:
Explanation: The safe load is calculated by multiplying the crushing stress by the rivet diameter and plate thickness.
Details: Proper calculation ensures structural integrity and prevents joint failure under load. The tolerance factor accounts for material variations and safety margins.
Tips: Enter the crushing stress in Pascals, rivet diameter in meters, plate thickness in meters, and tolerance percentage (±5% is typical).
Q1: What is typical crushing stress for steel rivets?
A: For mild steel rivets, crushing stress is typically 240-300 MPa (240,000,000-300,000,000 Pa).
Q2: Why include a tolerance percentage?
A: The tolerance accounts for material variations, manufacturing tolerances, and safety factors in design.
Q3: How does plate thickness affect safe load?
A: Thicker plates distribute the load over a larger area, increasing the safe load capacity.
Q4: What units should I use?
A: Use consistent SI units: Pascals for stress, meters for length dimensions.
Q5: Does this consider multiple rivets?
A: No, this calculates for a single rivet. For multiple rivets, multiply by the number of rivets sharing the load.