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A framework for evaluation of improvement opportunities for environmental impacts on construction works using life cycle assessment and value stream mapping concepts: offsite and onsite building construction

Adekunle Mofolasayo

World Journal of Civil Engineering and Architecture 2(1); 10.31586/wjcea.2023.562 - February 03, 2023

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Abstract

There have been various concerns about the environmental impact of construction works. This generates a need to take a more proactive approach in evaluating the environmental impacts of construction o... Read more

Figure 1. Project methodology.

Figure 2. Steps in a life cycle assessment (LCA). Adapted from [27, 54 - 56].

Figure 3. Offsite construction process for a building (*Adapted from Zhang Y., 2017 [57]).

Figure 4. Data requirement for life cycle analysis of offsite building construction process (inputs and outputs).

Figure 5. Present state map for building construction- for evaluation of environmental impacts of construction. (Adapted from Rother and Shook, 1999 [33]).

Figure 6. Sample future state map for evaluation of environmental impacts of building construction. (Adapted from Rother and Shook, 1999).

Figure 7. LCA steps: modified with the inclusion of present state, future state map, development and implementation of mitigation strategies, and periodic status review for continuous improvement. Adapted from ISO 14040 [27]; Hollberg, Genova, and Habert, (2020) [33]; Wolodko, (2019) [34].

Figure 8. A framework for evaluation of improvement opportunities for environmental impacts on construction works using life cycle assessment and value stream mapping concepts [Adapted from 27, 52, 54, 71].

Figure 9. A framework (model) for continuous improvement of the environmental impacts of construction operations.

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