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About the bolt edge distance checker
Check bolt hole end, edge and pitch distances against the minimums in EN 1993-1-8 for your plate and hole size.
How it works
EN 1993-1-8 Table 3.3 minimums: end and edge distance 1.2 d0, pitch 2.2 d0 in the load direction and 2.4 d0 across it, where d0 is the hole diameter.
Questions
Does this replace a structural engineer?
No. It checks the geometric minimums only; connection design stays with the engineer.