Here is a practical guide to understanding and using the Green Book for structural steel connections.

Open the PDF to Section 5.2 – "Fin Plate Connections." Step 2: Identify the beam depth (457 mm) and column flange width (254 mm). Step 3: Locate the table for "M20 bolts, Grade 8.8, fin plate S275." Step 4: Read across the row for beam depth 457 mm. Find the shear resistance column. Step 5: The table shows 280 kN for a 200 mm long plate with 4 bolts. This exceeds your 250 kN. Step 6: Check the notes – ensure the fin plate thickness is at least 10 mm and the weld to the column is 6 mm fillet. Step 7: Verify bolt edge distances – the PDF provides a separate table for minimum 30 mm and maximum 40 mm from the plate edge. Step 8: Detail the connection in your drawing callout: "FIN PLATE CONNECTION – SCI P358 – PAGE 5.2 – 4No. M20 8.8 bolts – 10mm plate – 6mm fillet weld"