👉Column Construction – Key Points

- Cage – Reinforcement cage prepared with longitudinal bars and stirrups. 
- Stirrups – Tied to longitudinal bars with 135° hooks for anchorage. 
- Stirrup Spacing – Minimum spacing of 8 inches. 
- Longitudinal Bars – Diameter should be at least ½ inch (later note mentions 1 inch as per code). 
- Concrete Pouring – Use concrete with minimum strength of 2,500 psi. 
- Concrete Vibration – Employ vibrator for proper consolidation and reduced permeability. 
- Formwork – Constructed using wooden planks to shape the column. 
- Plumb Bob – Used to check vertical alignment of the column. 
- Code Compliance – Bars and stirrups must follow structural code requirements.

🔑 Column construction is a critical part of any reinforced concrete structure. 🏗️ This channel  explains the complete process in a clear and practical way — from reinforcement cage preparation (blue steel bars) to proper stirrup spacing, formwork installation, concrete pouring, vibration, and vertical alignment using a plumb bob.

🔑 points covered:
🔹 Minimum concrete strength requirements
🔹 Proper stirrup hook detailing (135° hook)
🔹 Correct stirrup spacing
🔹 Minimum longitudinal bar diameter
🔹 Importance of vibration for compaction
🔹 Checking verticality before final setting With blue reinforcement, orange soil base, and clean white background, this 9:16 format design makes learning column construction simple and professional.

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