[Notes from LCI's 7th Annual Lean Construction Congress]
Assessing the Impacts of Implementing Lean Construction, Luis Alarcon
The Catholic University of Chile is at the center of spreading lean construction throughout Chile. Luis Alarcon shared how they are doing that and what results they are getting.
Companies have come together under Alarcon's tutelage to learn lean construction. The companies are responsible for implementing the new methodologies and for sharing the practices within the companies. In the last 2 - 3 years 77 projects have been done on a lean basis. PPC on companies' first projects has been rising over these three years. The largest cause of PPC failure on projects where PPC was greater than 65% was "subcontractor delays". As project teams get better at managing their own resources they reduce the impact of outside influences.
The effort was started when the construction council made a request for the university to benchmark lean performance among seven companies. It took persuasion to get the companies to share.
Report on LCI Design Forum, David Mar, Tipping Mar
David Mar has been involved with LCI's Design Forum for about 1 year. In that time he has stepped up to provide leadership to the initiative and great examples of what his firm Tipping Mar is learning as the incorporate lean principles and practices in the design work. David briefed us on what the Design Forum actions and findings along with what Tipping Mar has been learning. The following are the audience comments and questions to his presentation.
"In the iterative process you continue down a single path until you get screwed."
Key Points
- Client vs. Customer: the client will take possession of the capital asset. The customer is the person on the project who is counting on you for your timely completion of your work.
- Early and accurate cost estimates can guide the work of the designers to produce high value for the client.
- Detailers need to be at the kick-off meetings along with estimators to understand the value of the project to the client and help shape the direction of the designers' work.
- Batch estimating doesn't work well. Designers continue adding to work that may be determined unaffordable.
- Carefully picking who you share your fate with is self-interest
- Hard to get a good estimate when you pay for it; to think you can get it for free is ridiculous.
Audience Questions
- Why can't design be scheduled the way commitments are made?
- What are the more important lean issues in design?
- Elaborate on the job launch meeting.
- Wondering how can we make sure we get the right people to the table with the right expertise early on?
- If you had know about the budget issues earlier could you have brought it in at the target cost?
- What metrics are you using in the design process to know you are on track?
- How do you determine when it's time for someone to get uninvolved?
David's Closing Comments
We should use cost modeling as a design tool rather than just as an outcome. The premise that design is uncontrollable is wrong. Designers will benefit from project targets. Designers need more of the information that the developer has will help the designers deliver the program.
Perpetual innovation presupposes that teams can get together and learn. We can take the idea of working together will help. Measuring help us learn.
When doing design charrettes I'd like to have specialists available to those in the big room.
Design Assist at Sutter Camino Medical Center
Sutter Health is building a medical office building in Camino, CA. Holly Peterson Snyder is the architect. DPR is the general contractor. Sutter asked DPR to manage a design collaboration (design assist to the architects and engineers) with the MEP subcontractors. The results exceeded expectations. Glenn Ballard, Research Director, LCI, interviewed key members of the team in a panel conversation.
John Holm, Sutter Health: This is the strongest team I've ever worked with. It's a better team. The cost is within 2% of the original guesstimate.
Glenn: Big Question
Bryan , Capitol Engineering: On the mechanical side we shared our construction spec with the contractors before we designed. We adjusted our spec to conform to the construction expertise available.
Tracy , DPR: We got the MEP trades on very early. We did a team evaluation to select the subcontractors. One of the keys was is everyone is modeling in 3D. We probably saved $3-4 million in coordination that hasn't hit a coordination log. We still have contingency available.
George , DPR: The test is ongoing as are the results. We could get contractor commitments to schedule and pricing with a 50% set of documents. When a stakeholder gives you costs they stay focussed on controlling the costs.
John H: We've had only 6 RFIs on this project. We expect to have a small number on the balance of the project.
Glenn: How did you participate as subcontractors on this project?
Jeremy: We were able to save the project a bunch of money by working early with PG&E.
Mark: Our early environment allowed us to help the designer adjust the design before he was finished.
Glenn: How were you able to provide fast costing during design?
John: We produced phased design. The DPR estimating team would update the cost based on what happened at that day's meeting. This allowed us to move money from one bucket to another.
George: One key was the relationships that developed between the designers. Having the engineer present for the programming helped the team control the costs.
Bryan: It comes down to trust. I don't have to work through the formal contractual relationships to get a costing estimate. I can go to the right person and say I'm thinking about something and I get rapid feedback and questions for me to consider. When it came to consider alternatives we were able to present real cost data and get quick answers from the owner.
Glenn: What do you want to improve on going forward?
John: The relationships between the design assist subcontractors and the design sub consultants has been tremendous. We can do an even better job going forward. People are learning why each other does what they do.
Kevin , HPS: We bring on design assist folk early on and trust the designers can do some of their job before turning it over to the DAs.
George: We may have brought DA people on too early. This has been a real pull process. We're moving really fast.
Jeremy: Sometime being there early meant
Tracy: We might have overwhelmed the structural engineer. We kept changing things that made their work challenging. Overall they reacted very well.
Bryan: It's a good project. It's going well. However, maybe one thing that makes this work is we celebrate our own tension. Sometimes it can bring tension anywhere. The design team has goals that we are trying to preserve. Contractors have their goals. Taken together it creates tension.
Kevin: Architecture is subjective. Communicating that to the customer can be challenging.
LPSThe Last Planner System® is a lean approach to planning and delivering projects. It is based on a hierarchy of planning: should, can, will, and did. LPS is not a computer system. It is a set of protocols corresponding with the four above items: pull planning, look-ahead planning, task planning, and daily coordination.
The Last Planner System is a registered trademark of the Lean Construction Institute.
Last Planner SystemThe Last Planner System® is a lean approach to planning and delivering projects. It is based on a hierarchy of planning: should, can, will, and did. LPS is not a computer system. It is a set of protocols corresponding with the four above items: pull planning, look-ahead planning, task planning, and daily coordination.
The Last Planner System is a registered trademark of the Lean Construction Institute.