The selected flange type is an Integral Flange with Swing Bolt, which requires a distinct calculation approach.
The applicable design guideline is AD 2000-Merkblatt B 8, Section 8.4.7, Figure 11. According to this clause, flanges for clamp bolts must be calculated in accordance with the preliminary standard DIN 2505:1964-10, using d′L = 0 and the external diameter as da*.
📐 Code-Based Calculations:
- Inner Diameter (di) = 353 mm
- Outer Diameter (dA*) = dt - dL = 421.76 mm - 17.5 mm = 404.26 mm (per Figure 11)
- Weld Height (WH) = 6 mm (user-defined, representing weld as a hub)
- Total Flange Height (hA) = hF + WH = 28.8 mm + 6 mm = 34.8 mm
🔍 Derived Parameters:
- B1 = (hA - hF) / hF = (34.8 - 28.8) / 28.8 = 0.2083
- b = dA* - di = 404.26 mm - 353 mm = 51.26 mm
🔸 Note: The external diameter does not influence the calculation of b.
See Also