• Survey and mark column centers
• Clear construction area
• Verify foundation readiness

• Erect properly braced formwork
• Ensure vertical alignment with plumb
• Apply release agent

• Cut & bend rebar as per design drawings
• Clean bars from rust/oil before placement
• Maintain 25-50mm concrete cover using spacers
• Secure vertical bars with binding wire
• Inspect layout before concrete pouring

• Verify M25 concrete mix design
• Pour in 150-200mm layers
• Use mechanical vibrators for compaction
• Monitor formwork for bulging
• Level top surface with spirit level

• Begin curing after 24-48 hours
• Use water curing or compounds
• Maintain for minimum 7 days
• Protect from rapid drying

• Remove after concrete gains strength
• Carefully dismantle without damage
• Check for honeycombing/cracks
• Perform remedial repairs if needed

• Visual alignment check
• Verify surface integrity
• Conduct cube tests (7/28 days)
• Document test results

• Remove construction debris
• Backfill excavations in layers
• Compact each 200mm layer
• Ensure proper slope grading

Problem: Voids in concrete surface exposing aggregate.

Solution: Clean affected area, apply polymer-modified repair mortar, ensure proper vibration in future pours.

Problem: Column not plumb or properly aligned.

Solution: Verify formwork before pouring, use proper bracing, check alignment continuously during pouring.

Problem: Visible joints between concrete pours.

Solution: Ensure continuous pouring, roughen and clean surface if pour must be interrupted, use bonding agent if necessary.

Before project closeout, obtain final approval from:

• Project Manager
• Structural Engineer
• Quality Control Engineer
• Client Representative