Practical Equations for Calculating the Root Diameter of Bolts

Abstract

Since bolts can be removed and reassembled, they are often preferred by civil engineers in steel structures. Bolt root (minor) diameter, in other words, the least diameter of the bolt should be considered for most of the bolted connection design. In this case, the designer either takes the root diameter from the tables or calculates it using complex equations. Therefore, practical linear equations for both Standard Metric and Inch Based American bolts with sufficient accuracy were derived. It is claimed that these equations can save the designer from being dependent on the tables or memorizing complex equations.

Keywords

• Bolt
• Root Diameter
• Minor Diameter
• Thread
• Steel Structure

References

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