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The number of bolts calculation determines how many bolts are required in a jointed assembly to safely withstand external forces. This calculation ensures structural integrity and proper load distribution across all bolts in the assembly.
The calculator uses the formula:
Where:
Explanation: The formula calculates the minimum number of bolts needed by dividing the total external force by the shear load capacity of a single bolt.
Details: Proper bolt calculation is essential for structural safety, preventing joint failure, ensuring even load distribution, and maintaining mechanical integrity in assembled structures.
Tips: Enter the external force and primary shear load values in Newtons. Both values must be positive numbers greater than zero for accurate calculation.
Q1: What is primary shear load on a bolt?
A: Primary shear load is the maximum shear force that a single bolt can safely withstand without failure, typically specified by the bolt manufacturer or determined through testing.
Q2: Should safety factors be applied to this calculation?
A: Yes, engineering applications typically include safety factors. The calculated number should be multiplied by an appropriate safety factor based on the application requirements.
Q3: What if bolts have different load capacities?
A: This calculation assumes all bolts have identical load capacities. For mixed bolt types, use the lowest capacity value or calculate each type separately.
Q4: Does this account for tension loads?
A: This formula specifically calculates for shear loads. Different formulas are used for tension-loaded bolted joints.
Q5: How should the result be rounded?
A: Always round up to the nearest whole number since you cannot use a fraction of a bolt in practical applications.