Formwork & Concrete Pour

Formwork fabrication, installation, concrete pour, strip, and clean cycle

Construction
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Lead Time

325.0h

Cycle Time

57.0h

Wait Time

268.0h

PCE

16.9%

Stages

9

Bottleneck

Curing Period

Value-Add vs Non-Value-Add

Value-Add (VA)

An activity is value-add if it meets all three criteria:

  • The customer is willing to pay for it
  • It transforms the product or service
  • It is done right the first time

Examples: Assembly, diagnosis, treatment, coding, machining, testing

Non-Value-Add (NVA)

Activities that consume time or resources but don't add value from the customer's perspective:

  • Waiting — queues, approvals, batching delays
  • Transport — moving materials or information
  • Motion — unnecessary movement of people
  • Rework — correcting defects or errors
  • Over-processing — doing more than required

Note: Some NVA is necessary (compliance, safety). Target unnecessary NVA first.

Process Timeline

Value-Add vs Non-Value-Add

Bottleneck Analysis

Stage Efficiency

# Stage Cycle (h) Wait (h) VA Resource Defect % Efficiency
1 Formwork Design & Shop Drawings 8.0 48.0 VA Engineer 8.0% 14.3%
2 Material Fabrication 16.0 24.0 VA Formwork Carpenter 5.0% 40.0%
3 Steel Reinforcement Placement 8.0 4.0 VA Steel Fixer 6.0% 66.7%
4 Formwork Installation 12.0 2.0 VA Formwork Crew 7.0% 85.7%
5 Pre-Pour Inspection 1.0 8.0 VA Inspector 12.0% 11.1%
6 Concrete Pour 4.0 2.0 VA Concrete Crew 4.0% 66.7%
7 Curing Period 0.0 168.0 NVA None 2.0% 0.0%
8 Formwork Strip 6.0 4.0 VA Formwork Crew 5.0% 60.0%
9 Clean & Stack for Reuse 2.0 8.0 NVA Labourer 3.0% 20.0%