Gregory Howell

Communication +4

Address: Ketchum, Idaho, United States

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Papers

Relationship between On-Site Planning Efforts and Work Plan Reliability

Construction Research Congress 2016, 2016

“Oops” Simulation: Cost–Benefits Trade-Off Analysis of Reliable Planning for Construction Activities

Journal of Construction Engineering and Management, 2016

A guide for new users of the Last Planner System nine steps for success

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The Theory of Project Management: Explanation to Novel Methods

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Discussion of “Reducing Variability to Improve Performance as a Lean Construction Principle” by H. Randolph Thomas, Michael J. Horman, Ubiraci Espinelli Lemes de Souza, and Ivica Zavřski

J Constr Eng Manage Asce, 2004

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Work Structuring to Achieve Integrated Product¿Process Design

Journal of Construction Engineering and Management, 2004

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Capacity Utilization and Wait Time: A Primer for Construction

The relationship between capacity utilization, wait time and variation is well understood in traf... more The relationship between capacity utilization, wait time and variation is well understood in traffic and industrial engineering where the relationships are stated as fundamental laws. This paper will explain this concept and its implications for construction, and will challenge the current view that time and cost must always be in tension. The paper will show that reducing variation in work

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New Operating System for Project Management: Consequences and Opportunities

Journal of Construction Engineering and Management, Oct 1, 2011

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Bringing light to the dark side of lean construction: a response to Stuart Green

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Capacity Utilization and Wait Time: A Primer for Construction. Paper presented to ninth Annual

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Implementing Lean Construction: Stabilizing Work Flow

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Discussion of “Just-in-Time Management of Precast Concrete Components” by Low Sui Pheng and Choong Joo Chuan

Journal of Construction Engineering and Management, May 15, 2003

Construction Engineering—Reinvigorating the Discipline

Journal of Construction Engineering and Management, Oct 1, 2011

Construction engineering is all about production, and producing something useful is the very reas... more Construction engineering is all about production, and producing something useful is the very reason for projects to exist. How then to explain why construction engineering has progressively fallen out of focus in construction project management education and research? For an answer, the development of the discipline of construction management since the 1950s must be understood, a development that yielded a non-production-oriented approach to project management, one that provides the currently accepted operating ...

Performance Improvement Programs and Lean Construction

The paper examines the relationship between Lean Construction and Performance Improvement program... more The paper examines the relationship between Lean Construction and Performance Improvement programs in construction organizations. The authors argue that the structure and focus of existing performance improvement programs are a barrier to Lean Construction's entry into the organization. The paper first analyzes the characteristics of successful performance improvement programs, and develops a model that identifies three critical elements: 1) Time

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Lean production theory: Moving beyond "Can-Do

Lauri Koskela (1992) identified the first task for academics &amp;amp;amp;amp;amp;amp;amp;#x2... more Lauri Koskela (1992) identified the first task for academics &amp;amp;amp;amp;amp;amp;amp;#x27;is to explain the new philosophy in the context of construction&amp;amp;amp;amp;amp;amp;amp;#x27;and this is first objective here. The second is to provide a foundation to understand the contributions of Glenn Ballard which follow. The chapter first discusses changes in the construction industry to suggest why a new (or for that matter any) production theory is required. The extent of the uncertainty experienced on projects leads to yet another comparison between manufacturing and construction. A new understanding of ...

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Factors affecting project success in the piping function

Later, on the next job, a lead pipe fitter explained to a visitor why he was installing the parti... more Later, on the next job, a lead pipe fitter explained to a visitor why he was installing the particular spool just rigged. He replied that it was the longest they could find. Pressed to explain the decision he said,&amp;amp;amp;amp;amp;amp;#x27;Look�I&amp;amp;amp;amp;amp;amp;#x27;m getting beat up for productivity and long pieces make me look good&amp;amp;amp;amp;amp;amp;#x27;.

What Kind of Production is Construction?

Applicability of lean principles to construction might seem to require that construction's di... more Applicability of lean principles to construction might seem to require that construction's differentiating characteristics be softened or explained away. This is the strategy employed by those who advocate making construction more like the manufacturing from which lean thinking originated. Following that line of thought, successive waves of implementation would leave ever smaller remainders that are not yet reduced to manufacturing,

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Implementing Lean Construction: Understanding and Action

Lean thinking is a new way to manage construction. Born in manufacturing , the goals demand a new... more Lean thinking is a new way to manage construction. Born in manufacturing , the goals demand a new way to coordinate action, one that is applicable to industries far removed from manufacturing. Implementation requires action be shaped by a deeper understanding of the goals and techniques. This paper explains the implications of the goals and key production principles, and how

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Working near the edge: a new approach to construction safety

Construction safety has substantially improved, but has reached a plateau. Further improvement wi... more Construction safety has substantially improved, but has reached a plateau. Further improvement will come from spreading Best Practice throughout the industry, or from Breakthrough that transcends Best Practice. We are working on Breakthrough and propose that what is needed is a new theory of accidents. Current Best Practice is described along with its underlying theoretical assumptions. An alternative theory is proposed, based on the work of Jens Rasmussen, a leading thinker on risk management in dynamic environments. A research program is proposed to test that theory and to develop a new approach to safety management.

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Signal Detection Theory: Enabling Work Near the Edge

Occupational accidents are unquestionably wasteful and non-value adding events in any system of p... more Occupational accidents are unquestionably wasteful and non-value adding events in any system of production. Safeguarding construction workers from occupational hazards, whether arising from traumatic, ergonomic, and/or exposure accidents, is part and parcel of the lean construction ideal of waste elimination. Howell et al. (2002) proposed a new approach to understand construction accidents based on Rasmussen's theory of cognitive systems engineering. One aspect of the model focused on worker training to recognize hazards (unsafe conditions). The underlying assumption here is that workers will always recall what constitutes a safe or unsafe situation as well as respond to perceived or actual risks in the same manner. Therefore, a methodology to assess worker sensitivity to unsafe conditions and risk orientation is needed. This paper proposes a methodology based on Signal detection theory that was originally developed as an assessment technique for tasks requiring the detection of...

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