Design a beam splice - the joint that gives continuity between two in-line beams - to Eurocode 3 (EN 1993-1-8) with SCI P358/P398. Choose how each flange is treated (a full-strength butt weld, or a bolted cover plate) with a bolted web cover plate. The calculator distributes the moment between the flanges and the web by the second-moment-of-area ratio, then verifies the preloaded (HSFG) web bolts (slip resistance and combined bearing from shear plus the bolt-group eccentricity), the flange bolts, the tension flange and cover plate, the web cover plate (shear and bending) and the beam web - each with its utilisation and a clear PASS/FAIL on an interactive 3D model.