Economics of on‐site vs. off‐site fabrication of rebar

Polat, Gül; Arditi, David; Ballard, Glenn; Müngen, Uğur

doi:10.1080/01446190500529432

Cited by 29 publications

(18 citation statements)

References 8 publications

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“…These production challenges are related to high levels of product mix [6], traditional supply chain configurations [7], engineering faults and rework [8], management decisions [9], and cyclic market demand [10]. Adverse effects of these production challenges are eventually translated to the manufacturing floor and together with process dependencies generate bottlenecks.…”

Section: Introductionmentioning

confidence: 99%

Autonomous production tracking for augmenting output in off-site construction

Arashpour

Wakefield

Blismas

et al. 2015

Automation in Construction

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Problems in existing methods of production tracking in off-site construction result in schedule delays and increased costs. To eliminate these deficiencies, an autonomous production tracking that analyzes real-time production data is proposed. A specific implementation of the proposed production tracking mechanisms has been developed for a large off-site construction plant in Australia, and is in the process of installation. The paper shows that: (i) The production model in off-site construction is always nonlinear in the outcome due to the presence of variability (ii) in systems with a periodic production target, deviation from the schedule converges to zero at the end of production period and the same downward trend should be followed in designing plan buffers and (iii) long-term production performance in off-site construction can autonomously be monitored and controlled by observing critical variables of production. The paper provides those who manage off-site construction with recommendations on effective production tracking and management. The models and propositions in this research are of practical value and can be used to detect impending production shortfalls against periodic targets in the short-term, and adjust capacity parameters and production targets in long-term planning.

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Section: Introductionmentioning

confidence: 99%

Autonomous production tracking for augmenting output in off-site construction

Arashpour

Wakefield

Blismas

et al. 2015

Automation in Construction

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“…However, to quote Crowley (1998), 'solutions from the manufacturing industry cannot be simply applied to problems of the construction industry, without those solutions being re-engineered themselves'. Further, Polat et al (2006) demonstrated that simply moving efforts offsite does not necessarily guarantee efficient construction.…”

Section: Discussion On the Challenge To Using Osm In House Buildingmentioning

confidence: 99%

Factors and Drivers Effecting the Decision of Using Off-Site Manufacturing (OSM) Systems in House Building Industry

Elnaas¹,

Gidado²,

Ashton³

2014

EPPM-Journal

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Much has been written on Off-site Manufacturing (OSM) in construction, particularly regarding the perceived benefits and barriers to implementation. However, there seems to be a wide misunderstanding of the state of OSM associated with the concept of decision by many of those involved in decision making process within the house building industry. This has led to a demand for guidance's on decision making process for construction project leaders particularly at early project stages. Choosing a construction method for a project will require an optimum decision strategy which involves careful understanding, measurement and evaluation of a number of decision factors that can have the most influence on successful decision action. This paper, therefore, aims to identify the key decision factors to be considered at evaluation stage when choosing to use Off-Site Manufacturing (OSM) as a construction strategy in house building projects. This will reveal the key drivers for change in the industry towards the use of OSM in house building.

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“…Over the past decades however, the interest for lowering costs by focusing on logistics has increased (cf. Polat, et al, 2006;Said and El-Rayes, 2011). Grawe (2009) highlight that cost efficiency is a "necessity" in logistics and that many practitioners rate cost control and cost reduction as their main priority.…”

Section: Logistics Costsmentioning

confidence: 99%

Construction Logistics Solutions in Urban Areas

Janné

2018

Linköping Studies in Science and Technology. Licentiate Thesis

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More and more people are living in, or moving to, urban areas than ever before. This attraction to urban areas means that new houses and workplaces are needed. Building new houses or renovating older housing stock is a natural way for a city to evolve. However, the end products of construction projects are produced at their place of consumption. This means that a multitude of materials and resources need to be delivered to, and removed from, each construction site. This leads to new transport flows being created in urban areas. In urban areas, these transports are subjected to space limitations, environmental demands, accessibility demands and noise restrictions. This has led to a situation where material deliveries to construction sites needs to be coordinated and managed in ways that reduce their impact on the urban transport system and at the same time ensuring efficient construction projects. vi Slutligen visar forskningen på att en bygglogistiklösning måste introduceras med en uppsättning bestämmelser och en styrstrategi från den som initierar lösningen. Dessa bestämmelser och styrmedel måste vara tydliga och kommuniceras till berörda aktörer. För att minska motsättningar mot lösningen måste flexibilitet och intressentengagemang vara ledord. Om de direkt berörda aktörerna konsulteras om hur lösningen ska fungera ökar chansen att de kommer att acceptera lösningen. vii Foreword This journey that I am on, chasing that illusive PhD, is something that I have wanted to embark on for such a long time. Being here now, halfway through the PhD process, is something that would not have been possible without the support of the people around me. These few humble lines are dedicated to those persons. First and foremost, I want to thank my amazing superhero supervisor team, Martin Rudberg and Anna Fredriksson. Working with the two of you is a pleasure, I could not have asked for better people to guide me through this journey. I honestly do not think that this thesis would have turned out as well as it did without your scrutineering and support. Secondly, I want to give my special thanks to my colleagues in the construction logistics group, past and present, Andreas Ekeskär, Henric Jonsson, and Micael Thunberg. You are more than just colleagues to me, you are my dear friends. I cannot thank you enough for all the laughter, and occasional serious discussions we have had through the years. Thank you also for taking the time to read and comment on this thesis. Thirdly, I want to thank all my colleagues at the division of Communications and Transport Systems, this place would not be the same without you. A special thank you to Viveka Nilsson, your help with, well, everything is invaluable. I promise to (try to) become better at handing in my travel orders on time. J Finally, my thanks (and love) go out to my friends and family. I know that you may not always understand why I spend most of my time working or taking photos of cranes and construction sites, but you know that it is important to me and you always back me up in my sh...

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Economics of on‐site vs. off‐site fabrication of rebar

Cited by 29 publications

References 8 publications

Autonomous production tracking for augmenting output in off-site construction

Autonomous production tracking for augmenting output in off-site construction

Factors and Drivers Effecting the Decision of Using Off-Site Manufacturing (OSM) Systems in House Building Industry

Construction Logistics Solutions in Urban Areas

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