Critical management practices influencing on-site waste minimization in construction projects

Ajayi, Saheed O.; Oyedele, Lukumon O.; Bilal, Muhammad; Akinadé, Olúgbénga O.; Alaka, Hafiz; Owolabi, Hakeem A.

doi:10.1016/j.wasman.2016.10.040

Cited by 148 publications

(116 citation statements)

References 53 publications

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“…However, most construction waste management studies have largely focussed on the actual construction stage, resulting into the strategies for achieving the 3Rsreduce, reuse and recycle (Osmani, 2012;Ajayi et al, 2017a). This is notwithstanding that waste management efforts at the construction stage is belated if the design and the whole design process is not waste-efficient, especially as up to 33% of building construction waste could be prevented through design activities (Innes, 2004).…”

Section: Introductionmentioning

confidence: 99%

Critical design factors for minimising waste in construction projects: A structural equation modelling approach

Ajayi

Oyedele

2018

Resources, Conservation and Recycling

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Notwithstanding that efforts made at the design stage of building construction projects have significant impacts on project outcome, most waste management efforts are usually focussed on construction stage. This is albeit the understanding that construction waste could be significantly reduced through design activities. This study investigates the underlying design measures that are capable of minimising waste generated by construction and demolition activities. Using exploratory sequential mixed method research, the study employs focus group discussions and thematic analysis at the exploratory phase, while questionnaire and structural equation modelling were used at the explanatory stage of the study. The study suggests that construction waste could be significantly reduced by designing for standard materials size and by designing for modern method of construction, thereby minimising waste due to breakage, materials leftover and other major causes of waste. The study further suggests that the design process and design documentation are key underlying measures for mitigating waste in construction projects. This could be enhanced through such critical success factors as a collaborative delivery process, which is characterised by early involvement of contractors and adequate coordination of design between various disciplines involved. Findings of this study would assist designers and other construction stakeholders in understanding the significant measures for designing out waste in construction projects.

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Section: Introductionmentioning

confidence: 99%

Critical design factors for minimising waste in construction projects: A structural equation modelling approach

Ajayi

Oyedele

2018

Resources, Conservation and Recycling

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“…In addition, Kong et al (2001) suggests that materials procurement could contribute up to 50% of project cost. Although, several studies have suggested ineffective coordination of materials procurement process as a key cause of construction waste (Formoso et al, 2002;Ajayi et al, 2017), procurement measures for waste mitigation have either remained unexplored or subjects of scattered and unfocussed findings.…”

Section: Introductionmentioning

confidence: 99%

Optimising material procurement for construction waste minimization: An exploration of success factors

Ajayi

Oyedele

Akinadé

et al. 2017

Sustainable Materials and Technologies

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Although construction waste occurs during the actual construction activities, there is an understanding that it is caused by activities and actions at design, materials procurement and construction stages of project delivery processes. This study investigates the material procurement and logistics measures for mitigating waste generated by construction activities. In a bid to explore the phenomenon from the perspectives of experts from the construction industry, this study used a combination of descriptive interpretive research and survey approach as its methodological framework.The study suggests that four features characterised waste efficient logistic and procurement process. These include suppliers' commitment to low waste measures, low waste purchase management, effective materials delivery management and waste efficient Bill of Quantity. In addition, the key requisite strategies for mitigating construction waste through materials procurement include commitment to take back scheme , procurement of waste efficient materials/technology and use of minimal packaging. The use of Just-in-Time (JIT) delivery system and prevention of over ordering are also important for mitigating waste through materials procurement processes. These implies that while the key measures are critical success factors for reducing waste through procurement process, the four established features are required of all procurement process. Measures through which the procurement process could enhance waste efficiency are further highlighted and discussed in the paper. Findings of this study could assist in understanding a set of measures that should be taken during materials procurement process, thereby corroborating waste management practices at design and construction stages of project delivery process.

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“…Other measures cover agreements between contractors and subcontractors. These include a written commitment on waste management [15], contractual clauses to make subcontractors responsible for their waste [26], and the inclusion of waste targets for subcontractors [26,27].…”

Section: Fulfilling the Requirements Established By The Current Regulmentioning

confidence: 99%

Enhanced On-Site Waste Management of Plasterboard in Construction Works: A Case Study in Spain

2017

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On-site management of construction waste commonly determines its destination. In the case of plasterboard (PB), on-site segregation becomes crucial for closed-loop recycling. However, PB is commonly mixed with other wastes in Spain. In this context, the involvement of stakeholders that can contribute to reversing this current situation is needed. This paper analyzes on-site waste management of PB in Spain through a pilot study of a construction site, with the main objective of identifying best practices to increase waste prevention, waste minimization, and the recyclability of the waste. On-site visits and structured interviews were conducted. The results show five management stages: PB distribution (I); PB installation (II); Construction waste storage at the installation area (III); PB waste segregation at the installation area (IV) and PB waste transfer to the PB container and storage (V). The proposed practices refer to each stage and include the merging of Stages III and IV. This measure would avoid the mixing of waste fractions in Stage III, maximizing the recyclability of PB. In addition, two requisites for achieving enhanced management are analyzed: 'Training and commitment' and 'fulfilling the requirements established by the current regulation'. The results show that foremen adopted a more pessimistic attitude than installers towards a joint commitment for waste management. Moreover, not all supervisors valued the importance of a site waste management plan, regulated by the Royal Decree 105/2008 in Spain.

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Critical management practices influencing on-site waste minimization in construction projects

Cited by 148 publications

References 53 publications

Critical design factors for minimising waste in construction projects: A structural equation modelling approach

Critical design factors for minimising waste in construction projects: A structural equation modelling approach

Optimising material procurement for construction waste minimization: An exploration of success factors

Enhanced On-Site Waste Management of Plasterboard in Construction Works: A Case Study in Spain

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