Why not use an X, triangle or some other shape for the Break-Out shear section?
A4. Sign Supports engineers are some of the best, however no matter how hard they tried, they were unable to design an X, Square, triangle or solid round shear section which reliably acted like a circle when the sign support was impacted. The Break-Out uses a hollow circular shear section which ensures it performs as intended (with fixed break-away force) irrespective of the angle of incidence and helps it to withstand cyclic loads from winds without fatigue or failure.
