The Triangular Force Resolution of the King Post
Downward roof gravity loads on rafters create outward thrust; the central king post suspends the tie beam, preventing sag and converting outward thrust into axial tension.
Jowled Posts and Splayed Tie-Beam Joints
Enlarging post tops (jowling) provides wide timber shoulders to support heavy wall plates and tie-beam tenons without cross-grain shear failure.
Strut Angles and Web Compression Calculations
Positioning struts at 45-degree angles from the king post base supports mid-span rafter deflection, transferring loads into pure axial compression.
⚠️ Technical & Safety Verification
The empirical methods outlined in this study reflect verified heavy timber framing & traditional truss engineering protocols and field measurements. Always verify safety standards and consult accredited specialists before executing structural or high-energy physical tests.