Identification of Factors and Decision Analysis of the Level of Modularization in Building Construction

Sharafi, Pezhman; Rashidi, Maria; Samali, Bijan; Ronagh, Hamid Reza; Mortazavi, Mina

doi:10.1061/(asce)ae.1943-5568.0000313

Cited by 75 publications

(34 citation statements)

References 50 publications

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“…Then, Sharafi et al, suggested a list of critical decision making criteria that can be used for feasibility studies to select construction methods, such as the modular construction and stick-built construction methods, and developed a decision support system to facilitate the decision making process. By using the process, an appropriate construction system and the level of modularity can be determined [38]. These studies proved the importance of decision making in the early design phase and provided considerations that should be included for efficient modular building design.…”

Section: Rework In Modular Construction Projectsmentioning

confidence: 98%

“…In other words, if the design phase is not coordinated properly, modular construction can cost much more than stick-built construction [2,6,12,22,26,27]. In addition to the absence of an integrated process, there is currently limited expertise in modular construction in the marketplace; hence, the approach to design is still largely based on traditional methods [18,37,38]. This may lead to difficulty in identifying errors and omissions in the design, especially with complex information flows [15,17].…”

Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

“…Activities that generate information have different precedence relationships, and feedback occurs between participants. This multilateral information exchange increases the complexity of the To support the design phase of modular constructions, several studies have been conducted previously [36][37][38][39][40]. Nahangi et al, proposed an automated approach for monitoring the defection and damage of modular units using laser scanned data [36].…”

Section: Information Flow In the Design Processmentioning

confidence: 99%

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Integrated Design Process for Modular Construction Projects to Reduce Rework

et al. 2020

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In modular construction projects, unit production and onsite work are conducted concurrently, enabling shorter duration, lower cost, and improved quality. Because of the nature of the work, building design details should be determined early in the design phase, which requires information from participants. However, the design process for stick-built construction does not include such information, which leads to errors in design, such as omissions and conflicts of information from participants, causing reworking in the design phase. To reduce errors, an information flow should be identified representing when/what/how the information should be shared, and with whom. This paper proposes an integrated design process based on the information flow. To identify the flow, a precedence relationship between activities is represented using a dependency structure matrix (DSM). Then, the order of activities is rearranged using a partitioning algorithm. In this manner, unnecessary feedback and reverse information flow, which are related to errors, are reduced. Finally, the rearranged activities are proposed as an integrated design process. To validate the impact of the proposed process and methodology, interviews with experts were conducted. The validation results suggest that the project delivery method should also be considered in the early project phase in practical application.

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Section: Rework In Modular Construction Projectsmentioning

confidence: 98%

Section: Rework In Modular Construction Projectsmentioning

confidence: 99%

Section: Information Flow In the Design Processmentioning

confidence: 99%

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Integrated Design Process for Modular Construction Projects to Reduce Rework

et al. 2020

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“…Fully prefabricated cold-formed steel assemblies such as pods, roof trusses, panelised walls or floors, are composed of structural members and/or panels manufactured offsite. Prefabricated wall systems are one of the most popular modular systems in offsite construction industry [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Prefabricated Hybrid Wall Panel System for Lightweight Steel Construction in Seismic Prone Regions   

Sharafi¹,

Mortazavi²,

Samali³

et al. 2018

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A new lateral force-resisting wall panel is presented for applications in mid-rise prefabricated lightweight steel construction in seismic prone regions. This panelised system is composed of a hot-rolled frame and cold-formed studs and tracks, which works as a lateral force resisting system in lightweight steel framing. The proposed hybrid panel system exhibits proper ductility and energy dissipation behaviour. The hysteretic responses of full-scale panel experiments demonstrate that the system can safely resist high cyclic loads. The hot-rolled steel part, on the other hand, can significantly improve the initial lateral stiffness of the total system that will control the maximum allowable drift of multi-story buildings. Finally, in a case study, by applying the proposed system to the design of a mid-rise building in a high seismic area, the performance of the hybrid panels, are compared with those of fully hotrolled systems (moment resisting frames) and fully cold formed systems. The findings indicate that applying hybrid panels will result in lower weights and better performance in seismic prone regions.

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“…Rapidly assembled panels are a form of modular construction, commonly used in residential buildings, as well as industrial structures [9][10][11]. A wide range of these panels are made from new lightweight components such as foams.…”

Section: Introductionmentioning

confidence: 99%

Development of an Innovative Modular Foam-Filled Panelised System for Rapidly Assembled Post Disaster Housing<strong> </strong>

Sharafi¹,

Nemati²,

Samali³

et al. 2018

Preprint

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In this paper the development process of a deployable modular sandwich panelized system for rapid assembly building construction is presented, and its structural performance under some different action effects is investigated. This system, which includes an innovative sandwich panel and its integrated connections, can be used as structural walls and floors in quickly assembled post-disaster housing, as well as load bearing panels for pre-fabricated modular construction and semi-permanent buildings. Panels and connections are composed of a pneumatic fabric formwork, and two 3-D high-density polyethylene (HDPE) sheets as the skins, filled with high-density rigid Polyurethane (PU) foam as the core. HDPE sheets manufactured with a studded surface considerably enhance the stress distribution, buckling performance and delamination strength of the sandwich panel under various loading conditions. The load-carrying behaviour of the system in accordance with some ASTM standards is presented here. The results show the system satisfies the codes criteria regarding semi-permanent housing.

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Identification of Factors and Decision Analysis of the Level of Modularization in Building Construction

Cited by 75 publications

References 50 publications

Integrated Design Process for Modular Construction Projects to Reduce Rework

Integrated Design Process for Modular Construction Projects to Reduce Rework

Prefabricated Hybrid Wall Panel System for Lightweight Steel Construction in Seismic Prone Regions

Development of an Innovative Modular Foam-Filled Panelised System for Rapidly Assembled Post Disaster Housing<strong> </strong>

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Identification of Factors and Decision Analysis of the Level of Modularization in Building Construction

Cited by 75 publications

References 50 publications

Integrated Design Process for Modular Construction Projects to Reduce Rework

Integrated Design Process for Modular Construction Projects to Reduce Rework

Prefabricated Hybrid Wall Panel System for Lightweight Steel Construction in Seismic Prone Regions&nbsp; &nbsp;

Development of an Innovative Modular Foam-Filled Panelised System for Rapidly Assembled Post Disaster Housing<strong> </strong>

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Prefabricated Hybrid Wall Panel System for Lightweight Steel Construction in Seismic Prone Regions