Many construction processes include installation of unique materials in specific locations the facility being built; and must match before can take place. Mismatches due to delay uncertainty supplying or completing prerequisite work at those hamper field productivity. This is illustrated here using a model materials-management process with matching problem that typifies fast-track process-plant projects. The uniqueness combined unpredictability duration variation execution quality various...

The Parade Game illustrates the impact work flow variability has on performance of construction trades and their successors. game consists simulating a process in which resources produced by one trade are prerequisite to performed next trade. Production-level detail, describing being passed from next, that throughput will be reduced, project completion delayed, waste increased variations flow. shows it is possible reduce shorten duration reducing between trades. Basic production management...

Purpose – The purpose of this paper is to show that project success dependent on the management approach selected, relative challenges posed by project, and develop an analytical model for analyzing performance organization. Design/methodology/approach research based literature review, development, interviews, case studies. Findings findings define two different approaches in management: prescriptive focusses formal qualities organization, including governing documentation procedures....

Efficiently using site space to accommodate resources throughout the duration of a construction project is critical problem. It termed "dynamic layout planning" Solving it involves creating sequence layouts that span entire duration, given resources, timing their presence on site, changing demand for over time, constraints location, and costs relocation. A dynamic procedure presented here. Construction represented as rectangles, are subjected two-dimensional geometric relative locations. The...

The layout of temporary facilities on a construction site necessarily changes over time, so the term dynamic is used to describe sequence layouts spanning entire duration project. Many are dictated by schedule. In MovePlan model, which presented here, activity schedule therefore augmented with data needed construct layouts, i.e., resources required perform activities, and their dimensions. This can drive process, including positioning movement materials equipment. Conservative modeling...

A case study is presented that documents the most common configuration of supply chain for pipe supports used in power plants USA. This chain, like many others construction, has numerous inefficiencies, which occur at interfaces between processes, disciplines or organizations. Recognizing and understanding such their causes potential remedies provides a basis process re-engineering. The describes how today's industry practices are changing to yield shorter lead times. To model mechanisms...

Multicriteria decision-making (MCDM) methods can help designers address the choosing problem in building detailed design. Many, however, appear to assume that all are equivalent. This paper argues differences between MCDM matter. The first contribution of this is differentiating analytical hierarchy process (AHP) and by advantages (CBA) comparing them through an example. second explaining why CBA superior AHP for context. In summary, (1) provides a more context-based analysis than AHP, (2)...

This paper presents a personal historic view on lean construction, referring to the application of thinking delivery capital projects in architecture-engineering-construction (AEC) industry. Lean construction has caused paradigm shift: it offers new way those involved designing and managing AEC projects. The systems that promotes began develop industry 20-some years ago was spurred by recognition then-current about incongruent many ways. writer first conceptual underpinnings frame this...

A database program called WorkPlan has been created to systematically develop weekly work plans. Such plans are used by crew foremen in scheduling packages and allocating available labor equipment resources. adopts the Last Planner methodology, which implements several lean construction techniques. week prior conducting work, guides user step through process of spelling out packages, identifying constraints, checking constraint satisfaction, releasing resources; then at end week, collecting...

This paper reviews the principles, history, applications and current research issues associated with lean construction, in order to provide a foundation for future this area.Lean is management approach that emerged automobile industry spread initially other forms of repetitive manufacturing ultimately service industries.Despite its success practice, philosophy methods have not been fully evaluated incorporated into academic literature.The question remains what extent are unique beneficial...

Design teams must make numerous decisions in building design, including choosing materials. Lately, they have become more concerned about the social and environmental effects of their choices, addition to economic constraints. These concerns, increasing offerings construction materials products engagement stakeholders, complex. As decision complexity increases, so does need systematically use sound decision-making methods. However, practice many are made without a formal method or...

A model that uses artificial intelligence programming techniques is presented as a new tool for layout designers. This model, named SightPlan, represents the process well product. description of knowledge and problem‐solving method given SightPlan system mimics actions human designer. lays out temporary facilities, represented rectangles, on construction site, two‐dimensional space. An early‐commitment strategy spatial constraint satisfaction are used to find unique positions facilities...

SightPlan is a knowledge‐based system that lays out temporary facilities on construction sites. Its implementation architecture calls for explicit representation of the problem‐solving strategy used to construct solution layout. Because this can easily be modified we explore several alternate formulations. This paper describes development and testing strategies two agents might adopt match their cognitive capabilities. One models steps taken by manager laying site; it reflects human...

This paper presents "work structuring," a term used to describe the effort of integrating product and process design throughout project development process. To illustrate current work structuring practice, we case study involving installation door frames into walls in prison. We analyze why various problems existed. improve effort, apply "five whys" develop local global fixes for system precast frames. The five whys is technique elicit alternative ways without being constrained by...

It is widely known that industrialized building systems can positively impact construction projects in terms of efficiency, duration, safety, and quality. Although the use potentially simplify production process on-site, complexity overall delivery system tends to be high, especially engineered-to-order (ETO) environments, due factors such as uncertainty related goals methods, conflicts between different trades interdependence supply chain members. This paper explores concept modularity,...

Takt time is a design parameter used in production settings, whether it manufacturing or construction, tuning the rate of work output to customer's demand. Recent industry experiments have shown that takt-time planning and execution construction can yield significant benefits regard savings, money improved quality, other benefits. In this paper we describe our action-research implementation by means case study on an approximately $2.5 million retrofit floor operating healthcare facility. We...

For many years, lean production has been successfully applied in large companies producing high volumes of standardized products. However, which operate dissimilar environments have yet to expose a suitable model for pursuing the ideal, adapted and fine-tuned diverse characteristics demonstrated by producers of, example, highly customized, engineer-to-order The aim this paper is examine evolution principles with primary goal converging towards new set that are more clearly aligned deployment...

As in manufacturing with its Industry 4.0 transformation, the enormous potential of artificial intelligence (AI) is also being recognized construction industry. Specifically, equipment-intensive industry can benefit from using AI. AI applications leverage data recorded by numerous sensors on machines and mirror them a digital twin. Analyzing twin help optimize processes site increase productivity. We present case special foundation engineering: machine production bored piles. introduce...