Lean cycle time definition

Joel – Thanks for the question! You’ll have to forgive me, as it’s been a few years since I read the book. And please don’t take any offense to what I am about to say . . I greatly respect the work that authors pour into these books and what people find useful and inspirig. That being said, if my memory serves me correctly, I thought the book was good, but not exceptional. I thought it spent a great deal of page space trying to “sell” or “market” lean to the reader, at the expense of depth into most of the topics. Second, the book collated a lot of information in one place, but I don’t think it added anything new to the study. Most of the books on my list were the either the first (or the best) at documenting very important components of Lean Thinking / The Toyota Production System. “Lean Transformation” is a good book for the novice looking to start their journey (although, I believe Pascal Dennis’book “Lean Production Simplified” is a better resource for the beginner), but doesn’t crack my personal top 10. Thanks again!

According to the US Bureau of Labor Statistics, there are million people working in the US construction industry in 2016. The average construction worker is statistically more likely to work in a small or medium business than a large multi-billion company. Despite this statistic, many of the research and implementation case studies in Lean Construction have been on large multi-million or multi-billion projects. The goal of this blog post to present a case study of an application of the Last Planner System within a small 20-person company.

Cycle time is the time it take to complete your task or piece of the process (washing, loading or drying).
Takt time is the pace at which you need to produce to meet customer demand. It is available working time divided by customer demand in that period of time. Say if you have 5 working hours available to do laundry and you have 10 customers a day that need your services, your takt time is 5/10=. So you need to deliver a clean load every .5 hrs, or every 30 minutes. It is solely a calculated time based on your available working time and customer demand. It has nothing to do with your cycle time which is how long it takes you to perform a task.
The time to wash might be 60 minutes or might be, 90 minutes. In which case you can use your cycle time to calculate how many machines you should have or people washing (if hand washing).
In this case you would CALCULATE the number of resources you need:
(cycle time) / (Takt time) = # of resources needed. In this case 60 / 30 = 2. So you would need 2 machines to meet your takt time.

Identifying what creates value and eliminate all other activities, as they are by definition ‘waste’, will become your normal approach to evaluating procedures and processes across every aspect of your enterprise. When you recognise that within your organisation only a fraction of the time consumed, and a small portion of all efforts undertaken, genuinely add value for your end customer, you will have a basis to clearly define true value from your end customer’s perspective. Only then can all your non value activities (or waste) be targeted for systematic reduction and eventual removal.

Lean cycle time definition

lean cycle time definition

Identifying what creates value and eliminate all other activities, as they are by definition ‘waste’, will become your normal approach to evaluating procedures and processes across every aspect of your enterprise. When you recognise that within your organisation only a fraction of the time consumed, and a small portion of all efforts undertaken, genuinely add value for your end customer, you will have a basis to clearly define true value from your end customer’s perspective. Only then can all your non value activities (or waste) be targeted for systematic reduction and eventual removal.

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