Lean Construction Flashcards
Underpinning aim of lean construction
Efficiency
Lean considers value in terms of process efficiency
Lean construction value relationship with efficiency
Value is defined in LC as avoidance of waste
Value = 1 / waste
How does lean construction differ from VE
LC increases value in the production process
VE increases value in the product design
What is lean
A philosophy of continuous improvement, supported by a toolkit comprising many different tools and techniques of process improvement to add value
What are the problems with value in lean construction
Value is considered avoidance of waste which is not a definition
What value is to the customer is not directly considered by LC
Organisations think they are adding value when they are actually just increasing efficiency
What is the dual customer model
LC considers the client as one coherent customer
The other customer is the person performing the next activity in the production process
7 types of waste in lean production
Transportation
Inventory
Motion
Waiting
Over-processing
Over-production
Decects
How does just in time work in construction
Technically, the whole project is just in time from the client perspective (positive)
Lean tools
Kaizen (continuous improvement)
Kanban (enables JIT ensuring materials never run out)
Poka-yoke (mistake proofing)
Last planner system (collaborative look ahead task scheduling process)
How are lean processes optimised
Removing gaps (concerns internal customer)
Avoiding overlaps (minimisation of waste)
Aligning interfaces (minimisation of reworking)
What is the value chain in lean construction
LC considers the project supply chain as a value chain through which customer value flows from one activity to the next
What is collaborative planning (last planner critical conversation 1)
Key suppliers and SC’s help the planner to agree the schedule with the people doing the work
What is MakeReady (last planner critical conversation 2)
Ensures only tasks able to be completed are started
A systematic tick sheet
What is production planning (last planner critical conversation 3)
Frequent short meetings to evaluate performance in the last period and plan next
What is production management (last planner critical conversation 4)
Relies on shared responsibility for performance
Daily huddles
Team leader reviews at regular intervals
