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# Lean Community at Herrero: Set Based Desgin

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Implementation and results of Set Based Concurrent Engineering in the design phase and in construction documents detailing.

Implementation and results of Set Based Concurrent Engineering in the design phase and in construction documents detailing.

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• Change ref for slide show, not labs 21 but ____
• ### Transcript

• 1. Set-based Concurrent Engineering Eric Peabody, NCARB, LEED AP
• Set Based Design
• Set Based Detailing
• Relationship to Lean
The Design Partnership LLP  Architects + Planners
• 2. VA Palo Alto, Aquatic Center The Design Partnership LLP  Architects + Planners
• 3. The Design Partnership LLP  Architects + Planners
• 4. Set Based Design
• Multiple simultaneous designs for each chunk
• Evaluate Combinations
• Select a combination set
The Design Partnership LLP  Architects + Planners
• 5. Design Sets: Massing The Design Partnership LLP  Architects + Planners
• 6. Design Sets: Roof Structure The Design Partnership LLP  Architects + Planners
• 7. Design Sets: Skin Design The Design Partnership LLP  Architects + Planners
• 8. Design Sets
• Evaluate Combinations : n 1 *n 2 *n 3 …n n = many sets
• Massing: 7 options Roof Structure: 4 options Skin Design: 6 options
• 7*4*6=168 design sets
The Design Partnership LLP  Architects + Planners Which is the best option?
• The Fundamental Rule of Sound Decision-making:
• Decisions must be based on the importance of advantages.
• Pros & Cons = double counting
• Identify Attributes:
• Cake vs Cereal for Breakfast
• Calories
• Taste
• Identify Difference in Attribute Value:
• Cake for breakfast = 500 calories
• Cereal for breakfast = 200 calories
• Difference = 300 calories
The Design Partnership LLP  Architects + Planners
• Calories:
• Cake has 300 more calories
• Cereal has 300 fewer calories
• Cereal’s advantage is 300 few calories
• Cake has no calorie advantage
• Taste:
• Cake tastes very good.
• Cereal tastes okay.
• Cake’s advantage is it tastes much better
• Cereal has no taste advantage
The Design Partnership LLP  Architects + Planners
• 11. Choosing by Advantages The Design Partnership LLP  Architects + Planners 9 5 5 0 0 1 2 1 0 8 8 0 0 10 6 10 0 8 3 3 7 5 0 0 16 37 24 14
• 12. Swap Chunks
• Round 1: client selection
• Massing: Courtyard
• Roof Structure: Bow String
• Skin Design: Green Screen w/ Translucent Top
• Road block 1: Roof maintenance personnel safety
• Round 2: 30% scope increase
• Keep Massing & Roof Structure
• Develop new skin designs
• Client selected a variation of the Folded Skin option.
• Keep Translucent Top & Lobby Design
• Trade fenestration and material selection
The Design Partnership LLP  Architects + Planners
• Veterans Affairs Aquatic Center & Gymnasium
• Typical Project Schedule: 30 to 45 minutes per SF for design.
• Radically Accelerated Schedule: 30,000 SF in 4 months – Programming through CD 3 minutes per SF for design (10 to 15 times faster)
The Design Partnership LLP  Architects + Planners
• 14. Set-Based Detailing The Design Partnership LLP  Architects + Planners SET 1 SET 2 SET 3
• 15. Set-Based Detailing The Design Partnership LLP  Architects + Planners
• 16. Relationship to Lean
• Broadly evaluate options (study drawing phase)
• Customer Value
• Chain of Value (enough depth to engage C of V)
• Limit waste of overprocessing & subsequent rework
• Make decisions slowly, thoroughly considering options
• Consider all likely conditions not just the typical
• Fix problems before moving forward
• Build consensus within Chain of Value
• Implement Rapidly
• Consider design & construction concurrently
• Increased efficiency (flow & perfection)
• Through simultaneous evaluation instead of iterative loops
• Only move forward with the best approach
• Redundancy if problem discovered
The Design Partnership LLP  Architects + Planners
• 17. Questions? Thank you for your time. Eric Peabody 415 345-3813 [email_address] The Design Partnership LLP  Architects + Planners