Site Deliveries & Materials Management

Material ordering, delivery, receival, storage, and distribution to point of use

Construction
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Lead Time

107.5h

Cycle Time

6.0h

Wait Time

101.5h

PCE

3.7%

Stages

8

Bottleneck

Delivery Scheduling

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 Purchase Order Raised 0.5 4.0 VA Procurement 8.0% 11.1%
2 Supplier Confirmation 0.25 24.0 NVA Supplier 5.0% 1.0%
3 Delivery Scheduling 0.5 48.0 VA Logistics Coordinator 10.0% 1.0%
4 Site Access & Induction 0.5 1.0 NVA Gate Guard 3.0% 33.3%
5 Unloading & Receival Check 1.0 0.5 VA Storeman 12.0% 66.7%
6 Storage / Laydown 0.5 0.0 NVA Forklift Operator 4.0% 100.0%
7 Distribution to Point of Use 0.75 24.0 NVA Labourer 6.0% 3.0%
8 Installation / Consumption 2.0 0.0 VA Trade Crew 5.0% 100.0%