Analysis of cost comparison and effects of change orders during construction: Study of a mass timber and a concrete building project

Ahmed, Shafayet; Arocho, Ingrid

doi:10.1016/j.jobe.2020.101856

Cited by 39 publications

(16 citation statements)

References 23 publications

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“…In addition, the envelope is an essential element of a building because it not only serves as an esthetic element but also resists the main load-bearing structure [ 174 ]. Despite their considerable benefits, mass timber and hybrid buildings are still facing several challenges, especially those related to costs [ 156 , 175 ]. The material is more expensive compared to traditional construction materials (concrete and steel), as has been argued in previous sections [ 156 ].…”

Section: Wood and Building Energy Efficiencymentioning

confidence: 99%

A State of the Art of the Overall Energy Efficiency of Wood Buildings—An Overview and Future Possibilities

Cabral

Blanchet

2021

Materials

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The main goal of this study was to review current studies on the state of the art of wood constructions with a particular focus on energy efficiency, which could serve as a valuable source of information for both industry and scholars. This review begins with an overview of the role of materials in wood buildings to improve energy performance, covering structural and insulation materials that have already been successfully used in the market for general applications over the years. Subsequently, studies of different wood building systems (i.e., wood-frame, post-and-beam, mass timber and hybrid constructions) and energy efficiency are discussed. This is followed by a brief introduction to strategies to increase the energy efficiency of constructions. Finally, remarks and future research opportunities for wood buildings are highlighted. Some general recommendations for developing more energy-efficient wood buildings are identified in the literature and discussed. There is a lack of emerging construction concepts for wood-frame and post-and-beam buildings and a lack of design codes and specifications for mass timber and hybrid buildings. From the perspective of the potential environmental benefits of these systems as a whole, and their effects on energy efficiency and embodied energy in constructions, there are barriers that need to be considered in the future.

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Section: Wood and Building Energy Efficiencymentioning

confidence: 99%

A State of the Art of the Overall Energy Efficiency of Wood Buildings—An Overview and Future Possibilities

Cabral

Blanchet

2021

Materials

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“…A case study method presents the form of qualitative analysis of the particular issue. The quantitative information is not collected [60]. The proving design of the adaptive design of formwork elements possibilities is proposed in four steps: A flowchart of the adaptive design of formwork elements in the BIM environment (Figure 6) describes the processing of this issue as a case study.…”

Section: Methodsmentioning

confidence: 99%

“…During the design phase of the construction, the construction project may change. Project changes can have various causes: change of layout, change of technical requirements of the construction, change of legislative requirements, change of demands on time, quality or construction costs [60]. Changes can be initiated from all project participants (investor, architect, designer, structural engineer, MEP engineer, contractor, authorities, etc.)…”

Section: Methodsmentioning

confidence: 99%

Adaptive Design of Formworks for Building Renovation Considering the Sustainability of Construction in BIM Environment—Case Study

et al. 2021

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Progressive technologies and practices are shifting the possibilities of building design and improving work efficiency. Constantly changing site conditions require different procedures and designs that take into account these changing conditions, whether it is a design solution, a change in environmental conditions, or just sustainability factors. Adaptive building design offers opportunities to cope with changing factors to achieve the ähighest possible level of building quality. This case study deals with the topic of adaptive formwork design for building renovation, taking into account sustainability. The aim of the article is an investigation and demonstration of the building information modeling (BIM) environment used for the adaptive design of formwork elements for the building renovation in the context of sustainability. The object of the case study is a building in the center of Kosice, Slovakia. The BIM environment allows prompt and correct adaptation of the formwork design to changing lighting conditions, ventilation, heating and temperature during the design of the building.

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“…According to Ahmed and Arocho [22], the construction of mass timber buildings primarily with CLT is more expensive than concrete. According to Iwase et al [23], when CLT is used for floor slabs, the overall cost of construction, maintenance, and disposal for the consumer are higher than that of reinforced concrete (RC).…”

Section: Introductionmentioning

confidence: 99%

Life Cycle Regional Economic Impacts of Bridge Repair Using Cross-Laminated Timber Floor Slabs: A Case Study in Akita Prefecture, Japan

Huzita

Sasaki

Araki³

et al. 2022

Buildings

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Recently, cross-laminated timber (CLT) has attracted attention as a civil engineering material in Japan. In particular, the use of CLT floor slabs for bridge repair is expected to have regional economic impacts throughout their life cycle, but their economic impacts have not been evaluated. In this study, the life cycle regional economic impacts of using non-waterproofed CLT, waterproofed CLT, and reinforced concrete (RC) floor slabs for bridge repair in Akita Prefecture, Japan, were compared. Using past-to-present input–output tables, we quantitatively evaluated the economic impacts over the life cycle of floor slabs by estimating the future input–output tables for construction, maintenance, and disposal. The results showed that the construction and maintenance costs (final demand increase) of CLT floor slabs are higher than those of RC slabs, but the regional economic impact is larger. In addition, the non-waterproofed CLT must be renewed every time it is maintained. Therefore, the demand for CLT production in the prefecture will increase, and the economic impact will be larger than that of the other two floor slabs. This demand for CLT production will not only redound to the benefit of the forestry and wood industry but also the revitalization of regional economies.

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Analysis of cost comparison and effects of change orders during construction: Study of a mass timber and a concrete building project

Cited by 39 publications

References 23 publications

A State of the Art of the Overall Energy Efficiency of Wood Buildings—An Overview and Future Possibilities

A State of the Art of the Overall Energy Efficiency of Wood Buildings—An Overview and Future Possibilities

Adaptive Design of Formworks for Building Renovation Considering the Sustainability of Construction in BIM Environment—Case Study

Life Cycle Regional Economic Impacts of Bridge Repair Using Cross-Laminated Timber Floor Slabs: A Case Study in Akita Prefecture, Japan

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