Aaltodoc Repository :: Browsing by Author "Olivieri, Hylton"

Browsing by Author "Olivieri, Hylton"

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Applying Level of Detail in BIM-based project: An overall process for lean design management
(MDPI AG, 2019-05-01) Uusitalo, Petteri; Seppänen, Olli; Lappalainen, Eelon; Peltokorpi, Antti; Olivieri, Hylton; Department of Civil Engineering; Structures – Structural Engineering, Mechanics and Computation
Few construction companies apply the available lean tools and processes in an integrated manner when managing design. Additionally, lean design management tools and processes each have their own strengths and optimal phases in which they should be applied. Earlier approaches in lean design management have not explicitly included the level of detail of building information model (BIM) models in connection with planning methods. For example, the Last Planner System (LPS) uses collaborative social methods to obtain task dependencies and commitments from project stakeholders, but it does not provide any guidance regarding what those tasks should be in a BIM-based process. With regard to production, this guidance is provided by combining location-based methods, such as a location-based management system or takt planning, to LPS. In a similar manner, by combining information from various sources, this paper defines a location-based design management process using the concept of level of detail that can be integrated with LPS. The level of detail definition must be based on the requirements of the end-user in each stage of the construction project. The process was cocreated and validated in focus group meetings with design and construction companies and further evaluated and assessed by applying it in a case project.
Categorizing modularization strategies to achieve various objectives of building investments
(2018-01-02) Peltokorpi, Antti; Olivieri, Hylton; Granja, Ariovaldo Denis; Seppänen, Olli; Department of Civil Engineering; University of Campinas
Modularization has recently attracted considerable interest among academics and practitioners. In the construction industry, several modular solutions have been introduced and examined; however, hardly any study comprehensively classifies the different modularization strategies according to their possibility to achieve various objectives of building investments. This research aims to develop a framework for identifying and classifying modularization strategies in construction according to their suitability to achieve the specific outcomes intended for a building or its subsystem. Using the literature on product modularity, product platforms and production strategies as a basis, this study has developed a theoretical framework that proposes connections between the main objectives of a building investment and the dimensions of modularization strategies. The framework is elaborated by testing the propositions, based on an empirical analysis of nine real-life case studies. The findings reveal that modularization can be a suitable approach to develop an innovative design solution; improve a project’s quality, cost and schedule performance; and enable flexibility in building use and maintenance. However, suggestions for achieving these objectives vary from project organization-driven to collaborative, integrated or supplier-driven modularization strategies. Developers, owners, contractors and module suppliers can use the framework when positioning and developing their roles in the construction supply chain.
Comparative Analysis of Planning with the Critical Path Method, Last Planner System, and Location-Based Techniques in Brazil, Finland, and the United States
(American Society for Engineering Management, 2023) Scala, Natalie M.; Schiavone, Vincent; Olivieri, Hylton; Seppänen, Olli; Alves, Thais da C.L.; Liu, Min; Granja, Ariovaldo Denis; Department of Civil Engineering; Structures – Structural Engineering, Mechanics and Computation; Towson University; San Diego State University; Syracuse University; Universidade Estadual de Campinas; Institute for Technological Research
The Critical Path Method (CPM), the Last Planner System (LPS) and location-based methods, such as the Line of Balance (LB), are discussed extensively in the technical literature about schedules. However, no discussion exists focusing on the differences and similarities of these methods in terms of their use in different countries. Using chi-squared and Fisher’s exact tests, this research compared three countries (Brazil, Finland, and United States) and the methods to evaluate both intra- and inter-country implementation to gain additional insights about their use. Results suggest statistically significant intra- and inter-country differences regarding how these methods are used, with a specific focus on mechanics in the countries, offering important information to address their various scheduling needs. The results reflect the current state of practice; engineering and construction managers should understand different ways of understanding scheduling. Such understanding can lead to more efficient communication with collaborators and when incorporating foreign teams in projects. The study identifies the need for further scientific explanation as to why these methods are used in the manner they are intra-country as well as adaptions made in inter-country relationships.
Data Analysis on Applying Real Time Tracking in Production Control of Construction
(2018-02-12) Zhao, Jianyu; Olivieri, Hylton; Seppänen, Olli; Peltokorpi, Antti; Badihi, Behnam; Lundström, Pontus; Department of Civil Engineering; Department of Communications and Networking; Department of Civil Engineering
The interest in production control has increased over recent years, especially among lean construction practitioners. Despite of advanced planning and control methods, the data of on-site processes are still typically collected manually. At the same time, technology has been developed to the point where it is possible to remotely locate people, equipment and products in supply chains. Therefore, how to obtain and manage data in construction based on real time tracking is critical to change production control to a more real-time and less laborious process. The availability of real-time, location-based data, opens possibilities to revolutionize production control. This paper proposes a prototype of an intelligent system for real time production control on construction site, defining the types of the tracking data, and investigating the utility of them. The prototype combines Bluetooth and WIFI network as connection methods, and locates resources and their movements in real-time, which can be used as a reference to explore proper solution on construction projects and potentially improve production efficiency, sustainability and management of workers.
Improving workflow and resource usage in construction schedules through location-based management system (LBMS)
(2018-01-01) Olivieri, Hylton; Seppänen, Olli; Granja, Ariovaldo Denis; Department of Civil Engineering; University of Campinas
Critical Path Method (CPM), a planning and controlling technique, is widely used in the construction industry. However, CPM is criticized for its lack of workflow and inability to schedule continuous resource usage. Location-Based Management System (LBMS) fill these gaps and has been implemented in many construction projects. We propose that LBMS will improve schedules and project performance, addressing CPM’s main shortcomings. This study is composed of three case studies. CPM schedules were analyzed and were improved using LBMS tools. The resulting schedules show improved workflows, crew balancing, resource usage and had fewer interruptions, without affecting project duration. Furthermore, LBMS schedules were optimized with only a few scheduling operations and fewer planning elements. The computational benefit of LBMS increases with the number of locations and tasks in a schedule. Project managers will benefit from a simpler scheduling process and better resource flow.
Integrating LBMS, LPS and CPM: a practical process
(International Group for Lean Construction, 2016) Olivieri, Hylton; Seppänen, Olli; Granja, Ariovaldo Denis; Department of Civil Engineering; University of Campinas
Despite the lean construction community criticism of Critical Path Method (CPM), it is impossible to ignore its widespread use. Furthermore, CPM is commonly considered a contractual requirement demanded by owners. On the other hand, Location-Based Management System (LBMS) and Last Planner System (LPS) have been successfully implemented in many construction projects. This article puts forward the proposition that there are synergies between these tools and their combined use could provide great benefits and fill some gaps. The aim of this paper is to propose a practical process for integrating LBMS, LPS and CMP, in an attempt to improve planning and controlling processes in general, besides filling gaps related to delay analysis. A constructive research was developed through a case study, collecting data of a planning and controlling system used by a large construction company, which applies CPM and LPS tools. The processes and the main decisions of the project team were systematized in an integrated model, taking into consideration the project phases. Two additional propositions were formed to be validated in future case studies. Firstly, the integrated sources of data will help professionals to support decisions. Secondly, the schedules created with this integrated approach are better able to model workflow.
Real-time resource tracking for analyzing value-adding time in construction
(Elsevier, 2019-08-01) Zhao, Jianyu; Seppänen, Olli; Peltokorpi, Antti; Badihi, Behnam; Olivieri, Hylton; Department of Civil Engineering; Department of Communications and Networking; Structures – Structural Engineering, Mechanics and Computation
Improving the effectiveness of production control has attracted the interest of researchers and lean construction practitioners over recent years, through techniques such as Last Planner System (LPS) and Location-based Management System (LBMS). However, in these techniques, data collection and analysis still remain manual. Remotely locating workers on site has been suggested as a potential technology to collect crucial data required for production control. The purpose of this study is to test the applicability of a real-time tracking system for collecting data for production control in different types of construction projects. We applied Bluetooth Low Energy (BLE) technology in real-time tracking of workers in three case projects, including residential, office building, and plumbing renovation. We compared various tracking device placement strategies and analyzed the share of uninterrupted presence of workers in work locations based on the collected data. The findings show that both location-based and time-based information of workers can be obtained in real time from the proposed system, but issues of accuracy and coverage need to be considered when defining the data collection plan for each project. Accuracy and coverage issues can be resolved to a significant degree by applying heuristics in data analysis rather than investing in a more sophisticated tracking technology. The conclusion is that real-time tracking technologies are ready for implementation when certain heuristics and guidelines for installation are followed. It is possible to calculate a real-time presence index on a construction site. These data could be used to evaluate the impact of construction management interventions on waste on-site.
Real-time tracking of production control : Requirements and solutions
(International Group for Lean Construction, 2017) Olivieri, Hylton; Seppänen, Olli; Peltokorpi, Antti; Department of Civil Engineering
Production control in construction has been mainly discussed within the scope of Lean Construction, through tools and methods such as Last Planner System (LPS), Location-Based Management System (LBMS), and Takt Time Planning (TTP). However, despite the increasing use of these systems, information about the use of equipment, labour, and materials is still gathered through manual data collection, if at all. Real-time process information about these production factors is missing. This paper proposes an intelligent system for real-time production control (iCONS), which has been developed based on the requirements set by construction professionals from four countries, the existing technical solutions that have been used in real-time tracking, and on the proposed new solutions that can fulfill the requirements. Four types of requirements were identified based on interviews: 1) safety management, 2) monitoring process information, productivity and waste, 3) material logistics, and 4) location-based information on pull basis. The proposed system fills the key requirements by sharing and integrating real-time information between materials tracked with RFID tags, labour and equipment tracked by Bluetooth beacons, communicating with location-based gateways and iCONS app through a cloud-based solution. Project teams can use this system to improve production efficiency, management of suppliers, and safety conditions.
Reducing construction cycle time with prefabrication and modularization strategies
(2017-12-11) Kärpänen, Jussi; Olivieri, Hylton; Insinööritieteiden korkeakoulu; Seppänen, Olli
Finnish construction industry is at its peak at moment of this thesis, but still the productivity has not coup up with other industries. For example, productivity in manufacturing and shipbuilding industry has picked up in recent decades. In shipbuilding industry, which has similarities with construction industry, has been able to increase its productivity through modularization and prefabrication methods. Although productivity does not directly mean decrease in process cycle time, many studies show that increasing productivity leads to shorter cycle times in industrial processes. This thesis examines different prefabrication and modular options, which could reduce the construction cycle time. The possible options include solutions that can be implemented immediately as well as solutions that are not yet possible to implement them. Studies show that, if the degree of modularity and prefabrication is being raised, the production philosophy should resemble more manufacturing rather construction. Because of this, this thesis has a literature view in principles that are more widely used in shipbuilding and manufacturing industries, such as Lean and Six Sigma. Interviews in this study have been conducted with people who work in shipbuilding, construction or manufacturing industries. The interviews that were conducted to people who work in shipbuilding industry, aimed to explore ways and methods to increase the ratio of modularity and prefabrication in construction industry, as well as mapping the potential problems related to this. The interviews that were conducted with people who work in the field of construction and manufacturing, aimed to gather information on how to implement these solutions to the construction industry. Modularity and prefabrication cannot be considered as foregone conclusion. It requires coordination from builders, manufacturers and designers, without forgetting the customers’ needs. Obtaining a precise calculated result for the shortened construction cycle time by modularization and prefabrication would require more practical studies. However, this study reveals that various modularization and prefabrication strategies can potentially increase the productivity of construction industry and thus shorten the construction cycle time.
Review of Lean Design Management: Processes, methods and technologies
(International Group for Lean Construction, 2017) Uusitalo, Petteri; Olivieri, Hylton; Seppänen, Olli; Pikas, Ergo; Peltokorpi, Antti; Department of Civil Engineering
Lean Design Management (LDM) has been used by lean practitioners to manage the design process in construction. Several methods, processes and tools have been successfully implemented, such as the Last Planner System (LPS), Target Value Design (TVD), Set-Based Design and Design Structure Matrix. However, despite the increased use of LDM, many attributes are still applied in an isolated manner. Thus, there is a lack of an integrated framework which takes into account possible combinations of LDM methods, processes, and technologies used by designers and construction companies. The aim of this paper is to analyse design management attributes based on a literature review, case studies and interviews with practitioners, in three countries (Finland, Norway and United States), which have previously reported advanced lean design management implementations. Three new attributes were identified based on the case studies and interviews: Location-Based Design Management, Level of Detail and Real-time cost estimation. The completed list of attributes was presented to three Finnish contractors, and each selected a different combination of tools for their project which will be used as case studies in future research. Future research will test new combinations of LDM tools and evaluate their interactions and benefits to the project teams.
Solving design management problems using lean design management : the role of trust
(Emerald Group Publishing Ltd., 2019-08-19) Uusitalo, Petteri; Seppänen, Olli; Peltokorpi, Antti; Olivieri, Hylton; Department of Civil Engineering; Structures – Structural Engineering, Mechanics and Computation
Purpose: Although prior studies have noted the importance of trust for project performance, research remains scant on describing the role of trust when using lean design management (LDM) in projects. This study explores the connection between LDM and interpersonal trust in solving construction projects’ design management problems. Design: A qualitative study was conducted that included 29 trust- and LDM-themed semi-structured interviews in the United States (California), Brazil and Finland; 11 focus group discussions were also organized to validate the interview findings. Findings: The study reveals how LDM contributes to solving design management problems through two distinct but interconnected mechanisms: 1) improved information flow and 2) improved trust among project team members. A conceptual framework was crafted to illustrate the mechanisms in building trust by means of the social domain of LDM concepts. Research limitations: The conceptual framework requires testing through an international survey or through multiple case studies. Practical implications: The results indicate that design management would benefit from trustful environments and that trust may be the catalyst for actors’ engagement with LDM. Managers in charge of design within projects can use the conceptual framework when selecting the appropriate LDM tools, which should include both the social and technical domains. Originality: The study emphasizes the importance of the social domain of LDM concepts. Previous studies have focussed on information flow aspects of LDM but have overlooked the value of interpersonal trust in solving design management problems.
Survey comparing Critical Path Method, Last Planner System, and Location-Based techniques
(American Society of Civil Engineers (ASCE), 2019-12-01) Olivieri, Hylton; Seppänen, Olli; Alves, Thais da C. L.; Scala, Natalie; Schiavone, Vincent; Liu, Min; Granja, Ariovaldo Denis; Department of Civil Engineering; Structures – Structural Engineering, Mechanics and Computation; San Diego State University; Towson University; North Carolina State University; University of Campinas
In construction, the most relevant systems used for project management (PM) and project production management (PPM) in the planning and control phases are critical path method (CPM), last planner system (LPS), and location-based techniques (LB). Studies have addressed these systems, mostly in isolated fashions. This study aims to compare and contrast their use in terms of PM and PPM and clarify industry benefits in order to eliminate potential misunderstandings about their use. A survey was administered to construction professionals in Brazil, China, Finland, and the United States. No single system addresses all needs of PM and PPM. CPM is the dominant system when considering the following characteristics: primary industry types, type of organization, size of organization, professional position within the organization, and area of work. Contributions to knowledge include that CPM is a contract requirement with perceived benefits associated with critical path analysis; LB and LPS have perceived benefits regarding continuous flow and use of resources, treatment of interferences, and improving production control. All systems were found to have a similar level of benefits for management of contracts, delay and change, and evaluation of the root causes of delays. The industry can benefit from aligning project scheduling methods with project needs.
A utilização de novos sistemas construtivos para a redução no uso de insumos nos canteiros de obras: Light Steel Framing
(2017-10-01) Olivieri, Hylton; Carlos Alves Barbosa, Ivan; Carlos da Rocha, Antonio; Denis Granja, Ariovaldo; Stella Pucharelli Fontanini, Patricia; Rakennustekniikan laitos; Rossi Residencial SA; ACR Assessoria e Planejamentos Ltda; University of Campinas
Adopting new technologies in construction systems may lead to considerable reductions in the use of resources and operations in construction sites, such as less production labour, a decrease in material waste, improvements in logistics, a reduction in water consumption and less time spent on construction. In this context, Light Steel Framing (LSF) is considered a process with great potential when used as a façade system, mainly in multi-storey buildings, replacing the traditional method, which uses brick block masonry and external plaster. The aim of this research is to compare LSF with the traditional façade system quantitatively, considering labour, material waste, water consumption and construction time, using four cases studies in two countries (Brazil and Germany), which consider housing projects. The main contributions of this study are related to labour consumption rates when using LSF, obtained from case studies, as well as their potential advantages when compared with the traditional system.

Browsing by Author "Olivieri, Hylton"

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