Column ties are essential RCC reinforcement components that hold main bars in position, prevent buckling, and provide concrete confinement.

🔹 Key Components:

1️⃣ Longitudinal Bars – Resist column loads and bending.
2️⃣ Closed Ties – Support and confine main bars.
3️⃣ Tie Spacing – Distance between consecutive ties.
4️⃣ 135° Hooks – Provide reliable anchorage, especially in seismic detailing.
5️⃣ Hook Extension – Must meet structural code requirements.

📌 135° vs. 90° Hooks
135° Hook: Commonly used for seismic confinement.
90° Hook: Used only where permitted by the applicable code and approved design.

⚠️ Engineering Note: Tie spacing, hook dimensions, concrete cover, and reinforcement details must follow approved structural drawings and applicable codes.

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